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-rw-r--r--arch/arm64/Kconfig1
-rw-r--r--arch/arm64/include/asm/numa.h48
-rw-r--r--arch/arm64/kernel/acpi_numa.c12
-rw-r--r--arch/arm64/mm/Makefile1
-rw-r--r--arch/arm64/mm/init.c4
-rw-r--r--arch/arm64/mm/numa.c464
-rw-r--r--arch/riscv/Kconfig48
-rw-r--r--arch/riscv/Kconfig.socs33
-rw-r--r--arch/riscv/Makefile14
-rw-r--r--arch/riscv/boot/dts/Makefile2
-rw-r--r--arch/riscv/boot/dts/canaan/Makefile5
-rw-r--r--arch/riscv/boot/dts/canaan/canaan_kd233.dts152
-rw-r--r--arch/riscv/boot/dts/canaan/k210.dtsi459
-rw-r--r--arch/riscv/boot/dts/canaan/k210_generic.dts46
-rw-r--r--arch/riscv/boot/dts/canaan/sipeed_maix_bit.dts209
-rw-r--r--arch/riscv/boot/dts/canaan/sipeed_maix_dock.dts211
-rw-r--r--arch/riscv/boot/dts/canaan/sipeed_maix_go.dts219
-rw-r--r--arch/riscv/boot/dts/canaan/sipeed_maixduino.dts184
-rw-r--r--arch/riscv/boot/dts/kendryte/Makefile4
-rw-r--r--arch/riscv/boot/dts/kendryte/k210.dts23
-rw-r--r--arch/riscv/boot/dts/kendryte/k210.dtsi125
-rw-r--r--arch/riscv/boot/dts/sifive/Makefile3
-rw-r--r--arch/riscv/boot/dts/sifive/fu740-c000.dtsi293
-rw-r--r--arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts253
-rw-r--r--arch/riscv/configs/nommu_k210_defconfig46
-rw-r--r--arch/riscv/configs/nommu_k210_sdcard_defconfig92
-rw-r--r--arch/riscv/include/asm/bug.h1
-rw-r--r--arch/riscv/include/asm/csr.h6
-rw-r--r--arch/riscv/include/asm/kasan.h22
-rw-r--r--arch/riscv/include/asm/kprobes.h40
-rw-r--r--arch/riscv/include/asm/mmu.h2
-rw-r--r--arch/riscv/include/asm/mmu_context.h10
-rw-r--r--arch/riscv/include/asm/mmzone.h13
-rw-r--r--arch/riscv/include/asm/numa.h8
-rw-r--r--arch/riscv/include/asm/page.h3
-rw-r--r--arch/riscv/include/asm/pci.h14
-rw-r--r--arch/riscv/include/asm/pgtable.h21
-rw-r--r--arch/riscv/include/asm/probes.h24
-rw-r--r--arch/riscv/include/asm/processor.h1
-rw-r--r--arch/riscv/include/asm/ptrace.h35
-rw-r--r--arch/riscv/include/asm/sbi.h18
-rw-r--r--arch/riscv/include/asm/set_memory.h2
-rw-r--r--arch/riscv/include/asm/soc.h38
-rw-r--r--arch/riscv/include/asm/stackprotector.h3
-rw-r--r--arch/riscv/include/asm/stacktrace.h2
-rw-r--r--arch/riscv/include/asm/thread_info.h4
-rw-r--r--arch/riscv/include/asm/uprobes.h40
-rw-r--r--arch/riscv/kernel/Makefile6
-rw-r--r--arch/riscv/kernel/asm-offsets.c3
-rw-r--r--arch/riscv/kernel/ftrace.c95
-rw-r--r--arch/riscv/kernel/head.S4
-rw-r--r--arch/riscv/kernel/image-vars.h2
-rw-r--r--arch/riscv/kernel/mcount-dyn.S342
-rw-r--r--arch/riscv/kernel/patch.c8
-rw-r--r--arch/riscv/kernel/probes/Makefile6
-rw-r--r--arch/riscv/kernel/probes/decode-insn.c48
-rw-r--r--arch/riscv/kernel/probes/decode-insn.h18
-rw-r--r--arch/riscv/kernel/probes/ftrace.c53
-rw-r--r--arch/riscv/kernel/probes/kprobes.c398
-rw-r--r--arch/riscv/kernel/probes/kprobes_trampoline.S93
-rw-r--r--arch/riscv/kernel/probes/simulate-insn.c85
-rw-r--r--arch/riscv/kernel/probes/simulate-insn.h47
-rw-r--r--arch/riscv/kernel/probes/uprobes.c186
-rw-r--r--arch/riscv/kernel/process.c18
-rw-r--r--arch/riscv/kernel/ptrace.c99
-rw-r--r--arch/riscv/kernel/sbi.c36
-rw-r--r--arch/riscv/kernel/setup.c23
-rw-r--r--arch/riscv/kernel/signal.c3
-rw-r--r--arch/riscv/kernel/smpboot.c12
-rw-r--r--arch/riscv/kernel/soc.c27
-rw-r--r--arch/riscv/kernel/stacktrace.c22
-rw-r--r--arch/riscv/kernel/traps.c22
-rw-r--r--arch/riscv/kernel/vdso/Makefile3
-rw-r--r--arch/riscv/lib/Makefile2
-rw-r--r--arch/riscv/lib/error-inject.c10
-rw-r--r--arch/riscv/mm/Makefile3
-rw-r--r--arch/riscv/mm/context.c265
-rw-r--r--arch/riscv/mm/fault.c38
-rw-r--r--arch/riscv/mm/init.c108
-rw-r--r--arch/riscv/mm/kasan_init.c176
80 files changed, 4333 insertions, 1186 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a254f4871683..1f212b47a48a 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -999,6 +999,7 @@ config HOTPLUG_CPU
# Common NUMA Features
config NUMA
bool "NUMA Memory Allocation and Scheduler Support"
+ select GENERIC_ARCH_NUMA
select ACPI_NUMA if ACPI
select OF_NUMA
help
diff --git a/arch/arm64/include/asm/numa.h b/arch/arm64/include/asm/numa.h
index dd870390d639..8c8cf4297cc3 100644
--- a/arch/arm64/include/asm/numa.h
+++ b/arch/arm64/include/asm/numa.h
@@ -3,52 +3,6 @@
#define __ASM_NUMA_H
#include <asm/topology.h>
-
-#ifdef CONFIG_NUMA
-
-#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2)
-
-int __node_distance(int from, int to);
-#define node_distance(a, b) __node_distance(a, b)
-
-extern nodemask_t numa_nodes_parsed __initdata;
-
-extern bool numa_off;
-
-/* Mappings between node number and cpus on that node. */
-extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
-void numa_clear_node(unsigned int cpu);
-
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-const struct cpumask *cpumask_of_node(int node);
-#else
-/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
-static inline const struct cpumask *cpumask_of_node(int node)
-{
- if (node == NUMA_NO_NODE)
- return cpu_all_mask;
-
- return node_to_cpumask_map[node];
-}
-#endif
-
-void __init arm64_numa_init(void);
-int __init numa_add_memblk(int nodeid, u64 start, u64 end);
-void __init numa_set_distance(int from, int to, int distance);
-void __init numa_free_distance(void);
-void __init early_map_cpu_to_node(unsigned int cpu, int nid);
-void numa_store_cpu_info(unsigned int cpu);
-void numa_add_cpu(unsigned int cpu);
-void numa_remove_cpu(unsigned int cpu);
-
-#else /* CONFIG_NUMA */
-
-static inline void numa_store_cpu_info(unsigned int cpu) { }
-static inline void numa_add_cpu(unsigned int cpu) { }
-static inline void numa_remove_cpu(unsigned int cpu) { }
-static inline void arm64_numa_init(void) { }
-static inline void early_map_cpu_to_node(unsigned int cpu, int nid) { }
-
-#endif /* CONFIG_NUMA */
+#include <asm-generic/numa.h>
#endif /* __ASM_NUMA_H */
diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
index 7ff800045434..fdfecf0991ce 100644
--- a/arch/arm64/kernel/acpi_numa.c
+++ b/arch/arm64/kernel/acpi_numa.c
@@ -118,15 +118,3 @@ void __init acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa)
node_set(node, numa_nodes_parsed);
}
-int __init arm64_acpi_numa_init(void)
-{
- int ret;
-
- ret = acpi_numa_init();
- if (ret) {
- pr_info("Failed to initialise from firmware\n");
- return ret;
- }
-
- return srat_disabled() ? -EINVAL : 0;
-}
diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile
index 77222d92667a..f188c9092696 100644
--- a/arch/arm64/mm/Makefile
+++ b/arch/arm64/mm/Makefile
@@ -7,7 +7,6 @@ obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
obj-$(CONFIG_PTDUMP_DEBUGFS) += ptdump_debugfs.o
obj-$(CONFIG_TRANS_TABLE) += trans_pgd.o
-obj-$(CONFIG_NUMA) += numa.o
obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o
obj-$(CONFIG_ARM64_MTE) += mteswap.o
KASAN_SANITIZE_physaddr.o += n
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 709d98fea90c..0ace5e68efba 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -416,10 +416,10 @@ void __init bootmem_init(void)
max_pfn = max_low_pfn = max;
min_low_pfn = min;
- arm64_numa_init();
+ arch_numa_init();
/*
- * must be done after arm64_numa_init() which calls numa_init() to
+ * must be done after arch_numa_init() which calls numa_init() to
* initialize node_online_map that gets used in hugetlb_cma_reserve()
* while allocating required CMA size across online nodes.
*/
diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c
deleted file mode 100644
index a8303bc6b62a..000000000000
--- a/arch/arm64/mm/numa.c
+++ /dev/null
@@ -1,464 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * NUMA support, based on the x86 implementation.
- *
- * Copyright (C) 2015 Cavium Inc.
- * Author: Ganapatrao Kulkarni <gkulkarni@cavium.com>
- */
-
-#define pr_fmt(fmt) "NUMA: " fmt
-
-#include <linux/acpi.h>
-#include <linux/memblock.h>
-#include <linux/module.h>
-#include <linux/of.h>
-
-#include <asm/acpi.h>
-#include <asm/sections.h>
-
-struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
-EXPORT_SYMBOL(node_data);
-nodemask_t numa_nodes_parsed __initdata;
-static int cpu_to_node_map[NR_CPUS] = { [0 ... NR_CPUS-1] = NUMA_NO_NODE };
-
-static int numa_distance_cnt;
-static u8 *numa_distance;
-bool numa_off;
-
-static __init int numa_parse_early_param(char *opt)
-{
- if (!opt)
- return -EINVAL;
- if (str_has_prefix(opt, "off"))
- numa_off = true;
-
- return 0;
-}
-early_param("numa", numa_parse_early_param);
-
-cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
-EXPORT_SYMBOL(node_to_cpumask_map);
-
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-
-/*
- * Returns a pointer to the bitmask of CPUs on Node 'node'.
- */
-const struct cpumask *cpumask_of_node(int node)
-{
-
- if (node == NUMA_NO_NODE)
- return cpu_all_mask;
-
- if (WARN_ON(node < 0 || node >= nr_node_ids))
- return cpu_none_mask;
-
- if (WARN_ON(node_to_cpumask_map[node] == NULL))
- return cpu_online_mask;
-
- return node_to_cpumask_map[node];
-}
-EXPORT_SYMBOL(cpumask_of_node);
-
-#endif
-
-static void numa_update_cpu(unsigned int cpu, bool remove)
-{
- int nid = cpu_to_node(cpu);
-
- if (nid == NUMA_NO_NODE)
- return;
-
- if (remove)
- cpumask_clear_cpu(cpu, node_to_cpumask_map[nid]);
- else
- cpumask_set_cpu(cpu, node_to_cpumask_map[nid]);
-}
-
-void numa_add_cpu(unsigned int cpu)
-{
- numa_update_cpu(cpu, false);
-}
-
-void numa_remove_cpu(unsigned int cpu)
-{
- numa_update_cpu(cpu, true);
-}
-
-void numa_clear_node(unsigned int cpu)
-{
- numa_remove_cpu(cpu);
- set_cpu_numa_node(cpu, NUMA_NO_NODE);
-}
-
-/*
- * Allocate node_to_cpumask_map based on number of available nodes
- * Requires node_possible_map to be valid.
- *
- * Note: cpumask_of_node() is not valid until after this is done.
- * (Use CONFIG_DEBUG_PER_CPU_MAPS to check this.)
- */
-static void __init setup_node_to_cpumask_map(void)
-{
- int node;
-
- /* setup nr_node_ids if not done yet */
- if (nr_node_ids == MAX_NUMNODES)
- setup_nr_node_ids();
-
- /* allocate and clear the mapping */
- for (node = 0; node < nr_node_ids; node++) {
- alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
- cpumask_clear(node_to_cpumask_map[node]);
- }
-
- /* cpumask_of_node() will now work */
- pr_debug("Node to cpumask map for %u nodes\n", nr_node_ids);
-}
-
-/*
- * Set the cpu to node and mem mapping
- */
-void numa_store_cpu_info(unsigned int cpu)
-{
- set_cpu_numa_node(cpu, cpu_to_node_map[cpu]);
-}
-
-void __init early_map_cpu_to_node(unsigned int cpu, int nid)
-{
- /* fallback to node 0 */
- if (nid < 0 || nid >= MAX_NUMNODES || numa_off)
- nid = 0;
-
- cpu_to_node_map[cpu] = nid;
-
- /*
- * We should set the numa node of cpu0 as soon as possible, because it
- * has already been set up online before. cpu_to_node(0) will soon be
- * called.
- */
- if (!cpu)
- set_cpu_numa_node(cpu, nid);
-}
-
-#ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
-EXPORT_SYMBOL(__per_cpu_offset);
-
-static int __init early_cpu_to_node(int cpu)
-{
- return cpu_to_node_map[cpu];
-}
-
-static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
-{
- return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
-}
-
-static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
- size_t align)
-{
- int nid = early_cpu_to_node(cpu);
-
- return memblock_alloc_try_nid(size, align,
- __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, nid);
-}
-
-static void __init pcpu_fc_free(void *ptr, size_t size)
-{
- memblock_free_early(__pa(ptr), size);
-}
-
-void __init setup_per_cpu_areas(void)
-{
- unsigned long delta;
- unsigned int cpu;
- int rc;
-
- /*
- * Always reserve area for module percpu variables. That's
- * what the legacy allocator did.
- */
- rc = pcpu_embed_first_chunk(PERCPU_MODULE_RESERVE,
- PERCPU_DYNAMIC_RESERVE, PAGE_SIZE,
- pcpu_cpu_distance,
- pcpu_fc_alloc, pcpu_fc_free);
- if (rc < 0)
- panic("Failed to initialize percpu areas.");
-
- delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
- for_each_possible_cpu(cpu)
- __per_cpu_offset[cpu] = delta + pcpu_unit_offsets[cpu];
-}
-#endif
-
-/**
- * numa_add_memblk() - Set node id to memblk
- * @nid: NUMA node ID of the new memblk
- * @start: Start address of the new memblk
- * @end: End address of the new memblk
- *
- * RETURNS:
- * 0 on success, -errno on failure.
- */
-int __init numa_add_memblk(int nid, u64 start, u64 end)
-{
- int ret;
-
- ret = memblock_set_node(start, (end - start), &memblock.memory, nid);
- if (ret < 0) {
- pr_err("memblock [0x%llx - 0x%llx] failed to add on node %d\n",
- start, (end - 1), nid);
- return ret;
- }
-
- node_set(nid, numa_nodes_parsed);
- return ret;
-}
-
-/*
- * Initialize NODE_DATA for a node on the local memory
- */
-static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn)
-{
- const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
- u64 nd_pa;
- void *nd;
- int tnid;
-
- if (start_pfn >= end_pfn)
- pr_info("Initmem setup node %d [<memory-less node>]\n", nid);
-
- nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
- if (!nd_pa)
- panic("Cannot allocate %zu bytes for node %d data\n",
- nd_size, nid);
-
- nd = __va(nd_pa);
-
- /* report and initialize */
- pr_info("NODE_DATA [mem %#010Lx-%#010Lx]\n",
- nd_pa, nd_pa + nd_size - 1);
- tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
- if (tnid != nid)
- pr_info("NODE_DATA(%d) on node %d\n", nid, tnid);
-
- node_data[nid] = nd;
- memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
- NODE_DATA(nid)->node_id = nid;
- NODE_DATA(nid)->node_start_pfn = start_pfn;
- NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
-}
-
-/*
- * numa_free_distance
- *
- * The current table is freed.
- */
-void __init numa_free_distance(void)
-{
- size_t size;
-
- if (!numa_distance)
- return;
-
- size = numa_distance_cnt * numa_distance_cnt *
- sizeof(numa_distance[0]);
-
- memblock_free(__pa(numa_distance), size);
- numa_distance_cnt = 0;
- numa_distance = NULL;
-}
-
-/*
- * Create a new NUMA distance table.
- */
-static int __init numa_alloc_distance(void)
-{
- size_t size;
- u64 phys;
- int i, j;
-
- size = nr_node_ids * nr_node_ids * sizeof(numa_distance[0]);
- phys = memblock_find_in_range(0, PFN_PHYS(max_pfn),
- size, PAGE_SIZE);
- if (WARN_ON(!phys))
- return -ENOMEM;
-
- memblock_reserve(phys, size);
-
- numa_distance = __va(phys);
- numa_distance_cnt = nr_node_ids;
-
- /* fill with the default distances */
- for (i = 0; i < numa_distance_cnt; i++)
- for (j = 0; j < numa_distance_cnt; j++)
- numa_distance[i * numa_distance_cnt + j] = i == j ?
- LOCAL_DISTANCE : REMOTE_DISTANCE;
-
- pr_debug("Initialized distance table, cnt=%d\n", numa_distance_cnt);
-
- return 0;
-}
-
-/**
- * numa_set_distance() - Set inter node NUMA distance from node to node.
- * @from: the 'from' node to set distance
- * @to: the 'to' node to set distance
- * @distance: NUMA distance
- *
- * Set the distance from node @from to @to to @distance.
- * If distance table doesn't exist, a warning is printed.
- *
- * If @from or @to is higher than the highest known node or lower than zero
- * or @distance doesn't make sense, the call is ignored.
- */
-void __init numa_set_distance(int from, int to, int distance)
-{
- if (!numa_distance) {
- pr_warn_once("Warning: distance table not allocated yet\n");
- return;
- }
-
- if (from >= numa_distance_cnt || to >= numa_distance_cnt ||
- from < 0 || to < 0) {
- pr_warn_once("Warning: node ids are out of bound, from=%d to=%d distance=%d\n",
- from, to, distance);
- return;
- }
-
- if ((u8)distance != distance ||
- (from == to && distance != LOCAL_DISTANCE)) {
- pr_warn_once("Warning: invalid distance parameter, from=%d to=%d distance=%d\n",
- from, to, distance);
- return;
- }
-
- numa_distance[from * numa_distance_cnt + to] = distance;
-}
-
-/*
- * Return NUMA distance @from to @to
- */
-int __node_distance(int from, int to)
-{
- if (from >= numa_distance_cnt || to >= numa_distance_cnt)
- return from == to ? LOCAL_DISTANCE : REMOTE_DISTANCE;
- return numa_distance[from * numa_distance_cnt + to];
-}
-EXPORT_SYMBOL(__node_distance);
-
-static int __init numa_register_nodes(void)
-{
- int nid;
- struct memblock_region *mblk;
-
- /* Check that valid nid is set to memblks */
- for_each_mem_region(mblk) {
- int mblk_nid = memblock_get_region_node(mblk);
-
- if (mblk_nid == NUMA_NO_NODE || mblk_nid >= MAX_NUMNODES) {
- pr_warn("Warning: invalid memblk node %d [mem %#010Lx-%#010Lx]\n",
- mblk_nid, mblk->base,
- mblk->base + mblk->size - 1);
- return -EINVAL;
- }
- }
-
- /* Finally register nodes. */
- for_each_node_mask(nid, numa_nodes_parsed) {
- unsigned long start_pfn, end_pfn;
-
- get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
- setup_node_data(nid, start_pfn, end_pfn);
- node_set_online(nid);
- }
-
- /* Setup online nodes to actual nodes*/
- node_possible_map = numa_nodes_parsed;
-
- return 0;
-}
-
-static int __init numa_init(int (*init_func)(void))
-{
- int ret;
-
- nodes_clear(numa_nodes_parsed);
- nodes_clear(node_possible_map);
- nodes_clear(node_online_map);
-
- ret = numa_alloc_distance();
- if (ret < 0)
- return ret;
-
- ret = init_func();
- if (ret < 0)
- goto out_free_distance;
-
- if (nodes_empty(numa_nodes_parsed)) {
- pr_info("No NUMA configuration found\n");
- ret = -EINVAL;
- goto out_free_distance;
- }
-
- ret = numa_register_nodes();
- if (ret < 0)
- goto out_free_distance;
-
- setup_node_to_cpumask_map();
-
- return 0;
-out_free_distance:
- numa_free_distance();
- return ret;
-}
-
-/**
- * dummy_numa_init() - Fallback dummy NUMA init
- *
- * Used if there's no underlying NUMA architecture, NUMA initialization
- * fails, or NUMA is disabled on the command line.
- *
- * Must online at least one node (node 0) and add memory blocks that cover all
- * allowed memory. It is unlikely that this function fails.
- *
- * Return: 0 on success, -errno on failure.
- */
-static int __init dummy_numa_init(void)
-{
- phys_addr_t start = memblock_start_of_DRAM();
- phys_addr_t end = memblock_end_of_DRAM();
- int ret;
-
- if (numa_off)
- pr_info("NUMA disabled\n"); /* Forced off on command line. */
- pr_info("Faking a node at [mem %#018Lx-%#018Lx]\n", start, end - 1);
-
- ret = numa_add_memblk(0, start, end);
- if (ret) {
- pr_err("NUMA init failed\n");
- return ret;
- }
-
- numa_off = true;
- return 0;
-}
-
-/**
- * arm64_numa_init() - Initialize NUMA
- *
- * Try each configured NUMA initialization method until one succeeds. The
- * last fallback is dummy single node config encompassing whole memory.
- */
-void __init arm64_numa_init(void)
-{
- if (!numa_off) {
- if (!acpi_disabled && !numa_init(arm64_acpi_numa_init))
- return;
- if (acpi_disabled && !numa_init(of_numa_init))
- return;
- }
-
- numa_init(dummy_numa_init);
-}
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index e0a34eb5ed3b..a998babc1237 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -57,6 +57,7 @@ config RISCV
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN if MMU && 64BIT
+ select HAVE_ARCH_KASAN_VMALLOC if MMU && 64BIT
select HAVE_ARCH_KGDB
select HAVE_ARCH_KGDB_QXFER_PKT
select HAVE_ARCH_MMAP_RND_BITS if MMU
@@ -67,14 +68,19 @@ config RISCV
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_EBPF_JIT if MMU
+ select HAVE_FUNCTION_ERROR_INJECTION
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_GCC_PLUGINS
select HAVE_GENERIC_VDSO if MMU && 64BIT
select HAVE_IRQ_TIME_ACCOUNTING
+ select HAVE_KPROBES
+ select HAVE_KPROBES_ON_FTRACE
+ select HAVE_KRETPROBES
select HAVE_PCI
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
+ select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_STACKPROTECTOR
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
@@ -143,7 +149,7 @@ config PAGE_OFFSET
default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
config ARCH_FLATMEM_ENABLE
- def_bool y
+ def_bool !NUMA
config ARCH_SPARSEMEM_ENABLE
def_bool y
@@ -156,6 +162,9 @@ config ARCH_SELECT_MEMORY_MODEL
config ARCH_WANT_GENERAL_HUGETLB
def_bool y
+config ARCH_SUPPORTS_UPROBES
+ def_bool y
+
config SYS_SUPPORTS_HUGETLBFS
depends on MMU
def_bool y
@@ -302,6 +311,35 @@ config TUNE_GENERIC
endchoice
+# Common NUMA Features
+config NUMA
+ bool "NUMA Memory Allocation and Scheduler Support"
+ select GENERIC_ARCH_NUMA
+ select OF_NUMA
+ select ARCH_SUPPORTS_NUMA_BALANCING
+ help
+ Enable NUMA (Non-Uniform Memory Access) support.
+
+ The kernel will try to allocate memory used by a CPU on the
+ local memory of the CPU and add some more NUMA awareness to the kernel.
+
+config NODES_SHIFT
+ int "Maximum NUMA Nodes (as a power of 2)"
+ range 1 10
+ default "2"
+ depends on NEED_MULTIPLE_NODES
+ help
+ Specify the maximum number of NUMA Nodes available on the target
+ system. Increases memory reserved to accommodate various tables.
+
+config USE_PERCPU_NUMA_NODE_ID
+ def_bool y
+ depends on NUMA
+
+config NEED_PER_CPU_EMBED_FIRST_CHUNK
+ def_bool y
+ depends on NUMA
+
config RISCV_ISA_C
bool "Emit compressed instructions when building Linux"
default y
@@ -416,11 +454,17 @@ config EFI
allow the kernel to be booted as an EFI application. This
is only useful on systems that have UEFI firmware.
+config CC_HAVE_STACKPROTECTOR_TLS
+ def_bool $(cc-option,-mstack-protector-guard=tls -mstack-protector-guard-reg=tp -mstack-protector-guard-offset=0)
+
+config STACKPROTECTOR_PER_TASK
+ def_bool y
+ depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS
+
endmenu
config BUILTIN_DTB
def_bool n
- depends on RISCV_M_MODE
depends on OF
menu "Power management options"
diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs
index 3284d5c291be..7efcece8896c 100644
--- a/arch/riscv/Kconfig.socs
+++ b/arch/riscv/Kconfig.socs
@@ -22,30 +22,41 @@ config SOC_VIRT
help
This enables support for QEMU Virt Machine.
-config SOC_KENDRYTE
- bool "Kendryte K210 SoC"
+config SOC_CANAAN
+ bool "Canaan Kendryte K210 SoC"
depends on !MMU
select CLINT_TIMER if RISCV_M_MODE
select SERIAL_SIFIVE if TTY
select SERIAL_SIFIVE_CONSOLE if TTY
select SIFIVE_PLIC
+ select ARCH_HAS_RESET_CONTROLLER
+ select PINCTRL
help
- This enables support for Kendryte K210 SoC platform hardware.
+ This enables support for Canaan Kendryte K210 SoC platform hardware.
-config SOC_KENDRYTE_K210_DTB
- def_bool y
- depends on SOC_KENDRYTE_K210_DTB_BUILTIN
+if SOC_CANAAN
-config SOC_KENDRYTE_K210_DTB_BUILTIN
- bool "Builtin device tree for the Kendryte K210"
- depends on SOC_KENDRYTE
+config SOC_CANAAN_K210_DTB_BUILTIN
+ bool "Builtin device tree for the Canaan Kendryte K210"
+ depends on SOC_CANAAN
default y
select OF
select BUILTIN_DTB
- select SOC_KENDRYTE_K210_DTB
help
- Builds a device tree for the Kendryte K210 into the Linux image.
+ Build a device tree for the Kendryte K210 into the Linux image.
This option should be selected if no bootloader is being used.
If unsure, say Y.
+config SOC_CANAAN_K210_DTB_SOURCE
+ string "Source file for the Canaan Kendryte K210 builtin DTB"
+ depends on SOC_CANAAN
+ depends on SOC_CANAAN_K210_DTB_BUILTIN
+ default "k210_generic"
+ help
+ Base name (without suffix, relative to arch/riscv/boot/dts/canaan)
+ for the DTS file that will be used to produce the DTB linked into the
+ kernel.
+
+endif
+
endmenu
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index 8c29e553ef7f..1368d943f1f3 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -12,6 +12,8 @@ OBJCOPYFLAGS := -O binary
LDFLAGS_vmlinux :=
ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
LDFLAGS_vmlinux := --no-relax
+ KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY
+ CC_FLAGS_FTRACE := -fpatchable-function-entry=8
endif
ifeq ($(CONFIG_64BIT)$(CONFIG_CMODEL_MEDLOW),yy)
@@ -65,6 +67,16 @@ KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
# architectures. It's faster to have GCC emit only aligned accesses.
KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
+ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
+prepare: stack_protector_prepare
+stack_protector_prepare: prepare0
+ $(eval KBUILD_CFLAGS += -mstack-protector-guard=tls \
+ -mstack-protector-guard-reg=tp \
+ -mstack-protector-guard-offset=$(shell \
+ awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}' \
+ include/generated/asm-offsets.h))
+endif
+
# arch specific predefines for sparse
CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
@@ -83,7 +95,7 @@ PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
-ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_KENDRYTE),yy)
+ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_CANAAN),yy)
KBUILD_IMAGE := $(boot)/loader.bin
else
KBUILD_IMAGE := $(boot)/Image.gz
diff --git a/arch/riscv/boot/dts/Makefile b/arch/riscv/boot/dts/Makefile
index ca1f8cbd78c0..7ffd502e3e7b 100644
--- a/arch/riscv/boot/dts/Makefile
+++ b/arch/riscv/boot/dts/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
subdir-y += sifive
-subdir-y += kendryte
+subdir-$(CONFIG_SOC_CANAAN_K210_DTB_BUILTIN) += canaan
obj-$(CONFIG_BUILTIN_DTB) := $(addsuffix /, $(subdir-y))
diff --git a/arch/riscv/boot/dts/canaan/Makefile b/arch/riscv/boot/dts/canaan/Makefile
new file mode 100644
index 000000000000..9ee7156c0c31
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+ifneq ($(CONFIG_SOC_CANAAN_K210_DTB_SOURCE),"")
+dtb-y += $(strip $(shell echo $(CONFIG_SOC_CANAAN_K210_DTB_SOURCE))).dtb
+obj-$(CONFIG_SOC_CANAAN_K210_DTB_BUILTIN) += $(addsuffix .o, $(dtb-y))
+endif
diff --git a/arch/riscv/boot/dts/canaan/canaan_kd233.dts b/arch/riscv/boot/dts/canaan/canaan_kd233.dts
new file mode 100644
index 000000000000..039b92abf046
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/canaan_kd233.dts
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+ model = "Kendryte KD233";
+ compatible = "canaan,kendryte-kd233", "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led0 {
+ gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+ };
+
+ led1 {
+ gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ key0 {
+ label = "KEY0";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+ };
+ };
+};
+
+&fpioa {
+ pinctrl-0 = <&jtag_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ jtag_pinctrl: jtag-pinmux {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
+
+ uarths_pinctrl: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+
+ spi0_pinctrl: spi0-pinmux {
+ pinmux = <K210_FPIOA(6, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(7, K210_PCF_SPI0_SCLK)>, /* wr */
+ <K210_FPIOA(8, K210_PCF_GPIOHS21)>; /* dc */
+ };
+
+ dvp_pinctrl: dvp-pinmux {
+ pinmux = <K210_FPIOA(9, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(10, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(11, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(12, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(13, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(14, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(15, K210_PCF_DVP_PCLK)>,
+ <K210_FPIOA(17, K210_PCF_DVP_HSYNC)>;
+ };
+
+ gpiohs_pinctrl: gpiohs-pinmux {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>,
+ <K210_FPIOA(20, K210_PCF_GPIOHS4)>, /* Rot. dip sw line 8 */
+ <K210_FPIOA(21, K210_PCF_GPIOHS5)>, /* Rot. dip sw line 4 */
+ <K210_FPIOA(22, K210_PCF_GPIOHS6)>, /* Rot. dip sw line 2 */
+ <K210_FPIOA(23, K210_PCF_GPIOHS7)>, /* Rot. dip sw line 1 */
+ <K210_FPIOA(24, K210_PCF_GPIOHS8)>,
+ <K210_FPIOA(25, K210_PCF_GPIOHS9)>,
+ <K210_FPIOA(26, K210_PCF_GPIOHS10)>;
+ };
+
+ spi1_pinctrl: spi1-pinmux {
+ pinmux = <K210_FPIOA(29, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(30, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(31, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(32, K210_PCF_GPIOHS16)>; /* cs */
+ };
+
+ i2s0_pinctrl: i2s0-pinmux {
+ pinmux = <K210_FPIOA(33, K210_PCF_I2S0_IN_D0)>,
+ <K210_FPIOA(34, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(35, K210_PCF_I2S0_SCLK)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&gpiohs_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+ pinctrl-0 = <&i2s0_pinctrl>;
+ pinctrl-names = "default";
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+
+ panel@0 {
+ compatible = "ilitek,ili9341";
+ reg = <0>;
+ dc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
+ spi-max-frequency = <15000000>;
+ status = "disabled";
+ };
+};
+
+&spi1 {
+ pinctrl-0 = <&spi1_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 16 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ slot@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ voltage-ranges = <3300 3300>;
+ spi-max-frequency = <25000000>;
+ broken-cd;
+ };
+};
diff --git a/arch/riscv/boot/dts/canaan/k210.dtsi b/arch/riscv/boot/dts/canaan/k210.dtsi
new file mode 100644
index 000000000000..5e8ca8142482
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/k210.dtsi
@@ -0,0 +1,459 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+#include <dt-bindings/clock/k210-clk.h>
+#include <dt-bindings/pinctrl/k210-fpioa.h>
+#include <dt-bindings/reset/k210-rst.h>
+
+/ {
+ /*
+ * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
+ * wide, and the upper half of all addresses is ignored.
+ */
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "canaan,kendryte-k210";
+
+ aliases {
+ serial0 = &uarths0;
+ serial1 = &uart1;
+ serial2 = &uart2;
+ serial3 = &uart3;
+ };
+
+ /*
+ * The K210 has an sv39 MMU following the privileged specification v1.9.
+ * Since this is a non-ratified draft specification, the kernel does not
+ * support it and the K210 support enabled only for the !MMU case.
+ * Be consistent with this by setting the CPUs MMU type to "none".
+ */
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ timebase-frequency = <7800000>;
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "canaan,k210", "riscv";
+ reg = <0>;
+ riscv,isa = "rv64imafdc";
+ mmu-type = "riscv,none";
+ i-cache-block-size = <64>;
+ i-cache-size = <0x8000>;
+ d-cache-block-size = <64>;
+ d-cache-size = <0x8000>;
+ cpu0_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "riscv,cpu-intc";
+ };
+ };
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "canaan,k210", "riscv";
+ reg = <1>;
+ riscv,isa = "rv64imafdc";
+ mmu-type = "riscv,none";
+ i-cache-block-size = <64>;
+ i-cache-size = <0x8000>;
+ d-cache-block-size = <64>;
+ d-cache-size = <0x8000>;
+ cpu1_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ compatible = "riscv,cpu-intc";
+ };
+ };
+ };
+
+ sram: memory@80000000 {
+ device_type = "memory";
+ compatible = "canaan,k210-sram";
+ reg = <0x80000000 0x400000>,
+ <0x80400000 0x200000>,
+ <0x80600000 0x200000>;
+ reg-names = "sram0", "sram1", "aisram";
+ clocks = <&sysclk K210_CLK_SRAM0>,
+ <&sysclk K210_CLK_SRAM1>,
+ <&sysclk K210_CLK_AI>;
+ clock-names = "sram0", "sram1", "aisram";
+ };
+
+ clocks {
+ in0: oscillator {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <26000000>;
+ };
+ };
+
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+ ranges;
+ interrupt-parent = <&plic0>;
+
+ rom0: nvmem@1000 {
+ reg = <0x1000 0x1000>;
+ read-only;
+ };
+
+ clint0: timer@2000000 {
+ compatible = "canaan,k210-clint", "sifive,clint0";
+ reg = <0x2000000 0xC000>;
+ interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7
+ &cpu1_intc 3 &cpu1_intc 7>;
+ };
+
+ plic0: interrupt-controller@c000000 {
+ #interrupt-cells = <1>;
+ #address-cells = <0>;
+ compatible = "canaan,k210-plic", "sifive,plic-1.0.0";
+ reg = <0xC000000 0x4000000>;
+ interrupt-controller;
+ interrupts-extended = <&cpu0_intc 11 &cpu1_intc 11>;
+ riscv,ndev = <65>;
+ };
+
+ uarths0: serial@38000000 {
+ compatible = "canaan,k210-uarths", "sifive,uart0";
+ reg = <0x38000000 0x1000>;
+ interrupts = <33>;
+ clocks = <&sysclk K210_CLK_CPU>;
+ };
+
+ gpio0: gpio-controller@38001000 {
+ #interrupt-cells = <2>;
+ #gpio-cells = <2>;
+ compatible = "canaan,k210-gpiohs", "sifive,gpio0";
+ reg = <0x38001000 0x1000>;
+ interrupt-controller;
+ interrupts = <34 35 36 37 38 39 40 41
+ 42 43 44 45 46 47 48 49
+ 50 51 52 53 54 55 56 57
+ 58 59 60 61 62 63 64 65>;
+ gpio-controller;
+ ngpios = <32>;
+ };
+
+ dmac0: dma-controller@50000000 {
+ compatible = "snps,axi-dma-1.01a";
+ reg = <0x50000000 0x1000>;
+ interrupts = <27 28 29 30 31 32>;
+ #dma-cells = <1>;
+ clocks = <&sysclk K210_CLK_DMA>, <&sysclk K210_CLK_DMA>;
+ clock-names = "core-clk", "cfgr-clk";
+ resets = <&sysrst K210_RST_DMA>;
+ dma-channels = <6>;
+ snps,dma-masters = <2>;
+ snps,priority = <0 1 2 3 4 5>;
+ snps,data-width = <5>;
+ snps,block-size = <0x200000 0x200000 0x200000
+ 0x200000 0x200000 0x200000>;
+ snps,axi-max-burst-len = <256>;
+ };
+
+ apb0: bus@50200000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB0>;
+
+ gpio1: gpio@50200000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,dw-apb-gpio";
+ reg = <0x50200000 0x80>;
+ clocks = <&sysclk K210_CLK_APB0>,
+ <&sysclk K210_CLK_GPIO>;
+ clock-names = "bus", "db";
+ resets = <&sysrst K210_RST_GPIO>;
+
+ gpio1_0: gpio-port@0 {
+ #gpio-cells = <2>;
+ #interrupt-cells = <2>;
+ compatible = "snps,dw-apb-gpio-port";
+ reg = <0>;
+ interrupt-controller;
+ interrupts = <23>;
+ gpio-controller;
+ ngpios = <8>;
+ };
+ };
+
+ uart1: serial@50210000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x50210000 0x100>;
+ interrupts = <11>;
+ clocks = <&sysclk K210_CLK_UART1>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "baudclk", "apb_pclk";
+ resets = <&sysrst K210_RST_UART1>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ };
+
+ uart2: serial@50220000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x50220000 0x100>;
+ interrupts = <12>;
+ clocks = <&sysclk K210_CLK_UART2>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "baudclk", "apb_pclk";
+ resets = <&sysrst K210_RST_UART2>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ };
+
+ uart3: serial@50230000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x50230000 0x100>;
+ interrupts = <13>;
+ clocks = <&sysclk K210_CLK_UART3>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "baudclk", "apb_pclk";
+ resets = <&sysrst K210_RST_UART3>;
+ reg-io-width = <4>;
+ reg-shift = <2>;
+ dcd-override;
+ dsr-override;
+ cts-override;
+ ri-override;
+ };
+
+ spi2: spi@50240000 {
+ compatible = "canaan,k210-spi";
+ spi-slave;
+ reg = <0x50240000 0x100>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ interrupts = <3>;
+ clocks = <&sysclk K210_CLK_SPI2>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "ssi_clk", "pclk";
+ resets = <&sysrst K210_RST_SPI2>;
+ spi-max-frequency = <25000000>;
+ };
+
+ i2s0: i2s@50250000 {
+ compatible = "snps,designware-i2s";
+ reg = <0x50250000 0x200>;
+ interrupts = <5>;
+ clocks = <&sysclk K210_CLK_I2S0>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S0>;
+ };
+
+ i2s1: i2s@50260000 {
+ compatible = "snps,designware-i2s";
+ reg = <0x50260000 0x200>;
+ interrupts = <6>;
+ clocks = <&sysclk K210_CLK_I2S1>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S1>;
+ };
+
+ i2s2: i2s@50270000 {
+ compatible = "snps,designware-i2s";
+ reg = <0x50270000 0x200>;
+ interrupts = <7>;
+ clocks = <&sysclk K210_CLK_I2S2>;
+ clock-names = "i2sclk";
+ resets = <&sysrst K210_RST_I2S2>;
+ };
+
+ i2c0: i2c@50280000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x50280000 0x100>;
+ interrupts = <8>;
+ clocks = <&sysclk K210_CLK_I2C0>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "ref", "pclk";
+ resets = <&sysrst K210_RST_I2C0>;
+ };
+
+ i2c1: i2c@50290000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x50290000 0x100>;
+ interrupts = <9>;
+ clocks = <&sysclk K210_CLK_I2C1>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "ref", "pclk";
+ resets = <&sysrst K210_RST_I2C1>;
+ };
+
+ i2c2: i2c@502a0000 {
+ compatible = "snps,designware-i2c";
+ reg = <0x502A0000 0x100>;
+ interrupts = <10>;
+ clocks = <&sysclk K210_CLK_I2C2>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "ref", "pclk";
+ resets = <&sysrst K210_RST_I2C2>;
+ };
+
+ fpioa: pinmux@502b0000 {
+ compatible = "canaan,k210-fpioa";
+ reg = <0x502B0000 0x100>;
+ clocks = <&sysclk K210_CLK_FPIOA>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "ref", "pclk";
+ resets = <&sysrst K210_RST_FPIOA>;
+ canaan,k210-sysctl-power = <&sysctl 108>;
+ };
+
+ timer0: timer@502d0000 {
+ compatible = "snps,dw-apb-timer";
+ reg = <0x502D0000 0x100>;
+ interrupts = <14 15>;
+ clocks = <&sysclk K210_CLK_TIMER0>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "timer", "pclk";
+ resets = <&sysrst K210_RST_TIMER0>;
+ };
+
+ timer1: timer@502e0000 {
+ compatible = "snps,dw-apb-timer";
+ reg = <0x502E0000 0x100>;
+ interrupts = <16 17>;
+ clocks = <&sysclk K210_CLK_TIMER1>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "timer", "pclk";
+ resets = <&sysrst K210_RST_TIMER1>;
+ };
+
+ timer2: timer@502f0000 {
+ compatible = "snps,dw-apb-timer";
+ reg = <0x502F0000 0x100>;
+ interrupts = <18 19>;
+ clocks = <&sysclk K210_CLK_TIMER2>,
+ <&sysclk K210_CLK_APB0>;
+ clock-names = "timer", "pclk";
+ resets = <&sysrst K210_RST_TIMER2>;
+ };
+ };
+
+ apb1: bus@50400000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB1>;
+
+ wdt0: watchdog@50400000 {
+ compatible = "snps,dw-wdt";
+ reg = <0x50400000 0x100>;
+ interrupts = <21>;
+ clocks = <&sysclk K210_CLK_WDT0>,
+ <&sysclk K210_CLK_APB1>;
+ clock-names = "tclk", "pclk";
+ resets = <&sysrst K210_RST_WDT0>;
+ };
+
+ wdt1: watchdog@50410000 {
+ compatible = "snps,dw-wdt";
+ reg = <0x50410000 0x100>;
+ interrupts = <22>;
+ clocks = <&sysclk K210_CLK_WDT1>,
+ <&sysclk K210_CLK_APB1>;
+ clock-names = "tclk", "pclk";
+ resets = <&sysrst K210_RST_WDT1>;
+ };
+
+ sysctl: syscon@50440000 {
+ compatible = "canaan,k210-sysctl",
+ "syscon", "simple-mfd";
+ reg = <0x50440000 0x100>;
+ clocks = <&sysclk K210_CLK_APB1>;
+ clock-names = "pclk";
+
+ sysclk: clock-controller {
+ #clock-cells = <1>;
+ compatible = "canaan,k210-clk";
+ clocks = <&in0>;
+ };
+
+ sysrst: reset-controller {
+ compatible = "canaan,k210-rst";
+ #reset-cells = <1>;
+ };
+
+ reboot: syscon-reboot {
+ compatible = "syscon-reboot";
+ regmap = <&sysctl>;
+ offset = <48>;
+ mask = <1>;
+ value = <1>;
+ };
+ };
+ };
+
+ apb2: bus@52000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-pm-bus";
+ ranges;
+ clocks = <&sysclk K210_CLK_APB2>;
+
+ spi0: spi@52000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "canaan,k210-spi";
+ reg = <0x52000000 0x100>;
+ interrupts = <1>;
+ clocks = <&sysclk K210_CLK_SPI0>,
+ <&sysclk K210_CLK_APB2>;
+ clock-names = "ssi_clk", "pclk";
+ resets = <&sysrst K210_RST_SPI0>;
+ reset-names = "spi";
+ spi-max-frequency = <25000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ };
+
+ spi1: spi@53000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "canaan,k210-spi";
+ reg = <0x53000000 0x100>;
+ interrupts = <2>;
+ clocks = <&sysclk K210_CLK_SPI1>,
+ <&sysclk K210_CLK_APB2>;
+ clock-names = "ssi_clk", "pclk";
+ resets = <&sysrst K210_RST_SPI1>;
+ reset-names = "spi";
+ spi-max-frequency = <25000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ };
+
+ spi3: spi@54000000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,dwc-ssi-1.01a";
+ reg = <0x54000000 0x200>;
+ interrupts = <4>;
+ clocks = <&sysclk K210_CLK_SPI3>,
+ <&sysclk K210_CLK_APB2>;
+ clock-names = "ssi_clk", "pclk";
+ resets = <&sysrst K210_RST_SPI3>;
+ reset-names = "spi";
+ /* Could possibly go up to 200 MHz */
+ spi-max-frequency = <100000000>;
+ num-cs = <4>;
+ reg-io-width = <4>;
+ };
+ };
+ };
+};
diff --git a/arch/riscv/boot/dts/canaan/k210_generic.dts b/arch/riscv/boot/dts/canaan/k210_generic.dts
new file mode 100644
index 000000000000..396c8ca4d24d
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/k210_generic.dts
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+ model = "Kendryte K210 generic";
+ compatible = "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&fpioa {
+ pinctrl-0 = <&jtag_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ jtag_pins: jtag-pinmux {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
+
+ uarths_pins: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+};
diff --git a/arch/riscv/boot/dts/canaan/sipeed_maix_bit.dts b/arch/riscv/boot/dts/canaan/sipeed_maix_bit.dts
new file mode 100644
index 000000000000..0bcaf35045e7
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/sipeed_maix_bit.dts
@@ -0,0 +1,209 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ model = "SiPeed MAIX BiT";
+ compatible = "sipeed,maix-bit", "sipeed,maix-bitm",
+ "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led0 {
+ color = <LED_COLOR_ID_GREEN>;
+ label = "green";
+ gpios = <&gpio1_0 4 GPIO_ACTIVE_LOW>;
+ };
+
+ led1 {
+ color = <LED_COLOR_ID_RED>;
+ label = "red";
+ gpios = <&gpio1_0 5 GPIO_ACTIVE_LOW>;
+ };
+
+ led2 {
+ color = <LED_COLOR_ID_BLUE>;
+ label = "blue";
+ gpios = <&gpio1_0 6 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ boot {
+ label = "BOOT";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+ };
+ };
+};
+
+&fpioa {
+ pinctrl-names = "default";
+ pinctrl-0 = <&jtag_pinctrl>;
+ status = "okay";
+
+ jtag_pinctrl: jtag-pinmux {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
+
+ uarths_pinctrl: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+
+ gpio_pinctrl: gpio-pinmux {
+ pinmux = <K210_FPIOA(8, K210_PCF_GPIO0)>,
+ <K210_FPIOA(9, K210_PCF_GPIO1)>,
+ <K210_FPIOA(10, K210_PCF_GPIO2)>,
+ <K210_FPIOA(11, K210_PCF_GPIO3)>,
+ <K210_FPIOA(12, K210_PCF_GPIO4)>,
+ <K210_FPIOA(13, K210_PCF_GPIO5)>,
+ <K210_FPIOA(14, K210_PCF_GPIO6)>,
+ <K210_FPIOA(15, K210_PCF_GPIO7)>;
+ };
+
+ gpiohs_pinctrl: gpiohs-pinmux {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>,
+ <K210_FPIOA(17, K210_PCF_GPIOHS1)>,
+ <K210_FPIOA(21, K210_PCF_GPIOHS5)>,
+ <K210_FPIOA(22, K210_PCF_GPIOHS6)>,
+ <K210_FPIOA(23, K210_PCF_GPIOHS7)>,
+ <K210_FPIOA(24, K210_PCF_GPIOHS8)>,
+ <K210_FPIOA(25, K210_PCF_GPIOHS9)>,
+ <K210_FPIOA(32, K210_PCF_GPIOHS16)>,
+ <K210_FPIOA(33, K210_PCF_GPIOHS17)>,
+ <K210_FPIOA(34, K210_PCF_GPIOHS18)>,
+ <K210_FPIOA(35, K210_PCF_GPIOHS19)>;
+ };
+
+ i2s0_pinctrl: i2s0-pinmux {
+ pinmux = <K210_FPIOA(18, K210_PCF_I2S0_SCLK)>,
+ <K210_FPIOA(19, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(20, K210_PCF_I2S0_IN_D0)>;
+ };
+
+ dvp_pinctrl: dvp-pinmux {
+ pinmux = <K210_FPIOA(40, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(41, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(42, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(43, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(44, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(45, K210_PCF_DVP_HSYNC)>,
+ <K210_FPIOA(46, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(47, K210_PCF_DVP_PCLK)>;
+ };
+
+ spi0_pinctrl: spi0-pinmux {
+ pinmux = <K210_FPIOA(36, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(37, K210_PCF_GPIOHS21)>, /* rst */
+ <K210_FPIOA(38, K210_PCF_GPIOHS22)>, /* dc */
+ <K210_FPIOA(39, K210_PCF_SPI0_SCLK)>; /* wr */
+ };
+
+ spi1_pinctrl: spi1-pinmux {
+ pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(29, K210_PCF_GPIOHS13)>; /* cs */
+ };
+
+ i2c1_pinctrl: i2c1-pinmux {
+ pinmux = <K210_FPIOA(30, K210_PCF_I2C1_SCLK)>,
+ <K210_FPIOA(31, K210_PCF_I2C1_SDA)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&gpiohs_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio1 {
+ pinctrl-0 = <&gpio_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+ pinctrl-0 = <&i2s0_pinctrl>;
+ pinctrl-names = "default";
+};
+
+&i2c1 {
+ pinctrl-0 = <&i2c1_pinctrl>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+
+ panel@0 {
+ compatible = "sitronix,st7789v";
+ reg = <0>;
+ reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
+ dc-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
+ spi-max-frequency = <15000000>;
+ spi-cs-high;
+ status = "disabled";
+ };
+};
+
+&spi1 {
+ pinctrl-0 = <&spi1_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ slot@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ voltage-ranges = <3300 3300>;
+ spi-max-frequency = <25000000>;
+ broken-cd;
+ };
+};
+
+&spi3 {
+ spi-flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
+ broken-flash-reset;
+ };
+};
diff --git a/arch/riscv/boot/dts/canaan/sipeed_maix_dock.dts b/arch/riscv/boot/dts/canaan/sipeed_maix_dock.dts
new file mode 100644
index 000000000000..ac8a03f5867a
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/sipeed_maix_dock.dts
@@ -0,0 +1,211 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ model = "SiPeed MAIX Dock";
+ compatible = "sipeed,maix-dock-m1", "sipeed,maix-dock-m1w",
+ "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ /*
+ * Note: the board wiring drawing documents green on
+ * gpio #4, red on gpio #5 and blue on gpio #6. However,
+ * the board is actually wired differently as defined here.
+ */
+ led0 {
+ color = <LED_COLOR_ID_BLUE>;
+ label = "blue";
+ gpios = <&gpio1_0 4 GPIO_ACTIVE_LOW>;
+ };
+
+ led1 {
+ color = <LED_COLOR_ID_GREEN>;
+ label = "green";
+ gpios = <&gpio1_0 5 GPIO_ACTIVE_LOW>;
+ };
+
+ led2 {
+ color = <LED_COLOR_ID_RED>;
+ label = "red";
+ gpios = <&gpio1_0 6 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ boot {
+ label = "BOOT";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+ };
+ };
+};
+
+&fpioa {
+ pinctrl-0 = <&jtag_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ jtag_pinctrl: jtag-pinmux {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
+
+ uarths_pinctrl: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+
+ gpio_pinctrl: gpio-pinmux {
+ pinmux = <K210_FPIOA(8, K210_PCF_GPIO0)>,
+ <K210_FPIOA(11, K210_PCF_GPIO3)>,
+ <K210_FPIOA(12, K210_PCF_GPIO4)>,
+ <K210_FPIOA(13, K210_PCF_GPIO5)>,
+ <K210_FPIOA(14, K210_PCF_GPIO6)>,
+ <K210_FPIOA(15, K210_PCF_GPIO7)>;
+ };
+
+ gpiohs_pinctrl: gpiohs-pinmux {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>,
+ <K210_FPIOA(17, K210_PCF_GPIOHS1)>,
+ <K210_FPIOA(21, K210_PCF_GPIOHS5)>,
+ <K210_FPIOA(22, K210_PCF_GPIOHS6)>,
+ <K210_FPIOA(23, K210_PCF_GPIOHS7)>,
+ <K210_FPIOA(24, K210_PCF_GPIOHS8)>,
+ <K210_FPIOA(25, K210_PCF_GPIOHS9)>,
+ <K210_FPIOA(32, K210_PCF_GPIOHS16)>,
+ <K210_FPIOA(33, K210_PCF_GPIOHS17)>,
+ <K210_FPIOA(34, K210_PCF_GPIOHS18)>,
+ <K210_FPIOA(35, K210_PCF_GPIOHS19)>;
+ };
+
+ i2s0_pinctrl: i2s0-pinmux {
+ pinmux = <K210_FPIOA(18, K210_PCF_I2S0_SCLK)>,
+ <K210_FPIOA(19, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(20, K210_PCF_I2S0_IN_D0)>;
+ };
+
+ dvp_pinctrl: dvp-pinmux {
+ pinmux = <K210_FPIOA(40, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(41, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(42, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(43, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(44, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(45, K210_PCF_DVP_HSYNC)>,
+ <K210_FPIOA(46, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(47, K210_PCF_DVP_PCLK)>;
+ };
+
+ spi0_pinctrl: spi0-pinmux {
+ pinmux = <K210_FPIOA(36, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(37, K210_PCF_GPIOHS21)>, /* rst */
+ <K210_FPIOA(38, K210_PCF_GPIOHS22)>, /* dc */
+ <K210_FPIOA(39, K210_PCF_SPI0_SCLK)>; /* wr */
+ };
+
+ spi1_pinctrl: spi1-pinmux {
+ pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(29, K210_PCF_GPIOHS13)>; /* cs */
+ };
+
+ i2c1_pinctrl: i2c1-pinmux {
+ pinmux = <K210_FPIOA(9, K210_PCF_I2C1_SCLK)>,
+ <K210_FPIOA(10, K210_PCF_I2C1_SDA)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&gpiohs_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio1 {
+ pinctrl-0 = <&gpio_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+ pinctrl-0 = <&i2s0_pinctrl>;
+ pinctrl-names = "default";
+};
+
+&i2c1 {
+ pinctrl-0 = <&i2c1_pinctrl>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+
+ panel@0 {
+ compatible = "sitronix,st7789v";
+ reg = <0>;
+ reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
+ dc-gpios = <&gpio0 22 0>;
+ spi-max-frequency = <15000000>;
+ status = "disabled";
+ };
+};
+
+&spi1 {
+ pinctrl-0 = <&spi1_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ slot@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ voltage-ranges = <3300 3300>;
+ spi-max-frequency = <25000000>;
+ broken-cd;
+ };
+};
+
+&spi3 {
+ spi-flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
+ broken-flash-reset;
+ };
+};
diff --git a/arch/riscv/boot/dts/canaan/sipeed_maix_go.dts b/arch/riscv/boot/dts/canaan/sipeed_maix_go.dts
new file mode 100644
index 000000000000..623998194bc1
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/sipeed_maix_go.dts
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ model = "SiPeed MAIX GO";
+ compatible = "sipeed,maix-go", "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ led0 {
+ color = <LED_COLOR_ID_GREEN>;
+ label = "green";
+ gpios = <&gpio1_0 4 GPIO_ACTIVE_LOW>;
+ };
+
+ led1 {
+ color = <LED_COLOR_ID_RED>;
+ label = "red";
+ gpios = <&gpio1_0 5 GPIO_ACTIVE_LOW>;
+ };
+
+ led2 {
+ color = <LED_COLOR_ID_BLUE>;
+ label = "blue";
+ gpios = <&gpio1_0 6 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ up {
+ label = "UP";
+ linux,code = <BTN_1>;
+ gpios = <&gpio1_0 7 GPIO_ACTIVE_LOW>;
+ };
+
+ press {
+ label = "PRESS";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+ };
+
+ down {
+ label = "DOWN";
+ linux,code = <BTN_2>;
+ gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+ };
+ };
+};
+
+&fpioa {
+ pinctrl-0 = <&jtag_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+
+ jtag_pinctrl: jtag-pinmux {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
+
+ uarths_pinctrl: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+
+ gpio_pinctrl: gpio-pinmux {
+ pinmux = <K210_FPIOA(8, K210_PCF_GPIO0)>,
+ <K210_FPIOA(9, K210_PCF_GPIO1)>,
+ <K210_FPIOA(10, K210_PCF_GPIO2)>,
+ <K210_FPIOA(11, K210_PCF_GPIO3)>,
+ <K210_FPIOA(12, K210_PCF_GPIO4)>,
+ <K210_FPIOA(13, K210_PCF_GPIO5)>,
+ <K210_FPIOA(14, K210_PCF_GPIO6)>,
+ <K210_FPIOA(15, K210_PCF_GPIO7)>;
+ };
+
+ gpiohs_pinctrl: gpiohs-pinmux {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>,
+ <K210_FPIOA(17, K210_PCF_GPIOHS1)>,
+ <K210_FPIOA(21, K210_PCF_GPIOHS5)>,
+ <K210_FPIOA(22, K210_PCF_GPIOHS6)>,
+ <K210_FPIOA(23, K210_PCF_GPIOHS7)>,
+ <K210_FPIOA(24, K210_PCF_GPIOHS8)>,
+ <K210_FPIOA(25, K210_PCF_GPIOHS9)>,
+ <K210_FPIOA(32, K210_PCF_GPIOHS16)>,
+ <K210_FPIOA(33, K210_PCF_GPIOHS17)>,
+ <K210_FPIOA(34, K210_PCF_GPIOHS18)>,
+ <K210_FPIOA(35, K210_PCF_GPIOHS19)>;
+ };
+
+ i2s0_pinctrl: i2s0-pinmux {
+ pinmux = <K210_FPIOA(18, K210_PCF_I2S0_SCLK)>,
+ <K210_FPIOA(19, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(20, K210_PCF_I2S0_IN_D0)>;
+ };
+
+ dvp_pinctrl: dvp-pinmux {
+ pinmux = <K210_FPIOA(40, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(41, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(42, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(43, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(44, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(45, K210_PCF_DVP_HSYNC)>,
+ <K210_FPIOA(46, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(47, K210_PCF_DVP_PCLK)>;
+ };
+
+ spi0_pinctrl: spi0-pinmux {
+ pinmux = <K210_FPIOA(36, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(37, K210_PCF_GPIOHS21)>, /* rst */
+ <K210_FPIOA(38, K210_PCF_GPIOHS22)>, /* dc */
+ <K210_FPIOA(39, K210_PCF_SPI0_SCLK)>; /* wr */
+ };
+
+ spi1_pinctrl: spi1-pinmux {
+ pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(29, K210_PCF_GPIOHS13)>; /* cs */
+ };
+
+ i2c1_pinctrl: i2c1-pinmux {
+ pinmux = <K210_FPIOA(30, K210_PCF_I2C1_SCLK)>,
+ <K210_FPIOA(31, K210_PCF_I2C1_SDA)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&gpiohs_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio1 {
+ pinctrl-0 = <&gpio_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+ pinctrl-0 = <&i2s0_pinctrl>;
+ pinctrl-names = "default";
+};
+
+&i2c1 {
+ pinctrl-0 = <&i2c1_pinctrl>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+
+ panel@0 {
+ compatible = "sitronix,st7789v";
+ reg = <0>;
+ reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
+ dc-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
+ spi-max-frequency = <15000000>;
+ status = "disabled";
+ };
+};
+
+&spi1 {
+ pinctrl-0 = <&spi1_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ slot@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ voltage-ranges = <3300 3300>;
+ spi-max-frequency = <25000000>;
+ broken-cd;
+ };
+};
+
+&spi3 {
+ spi-flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
+ broken-flash-reset;
+ };
+};
diff --git a/arch/riscv/boot/dts/canaan/sipeed_maixduino.dts b/arch/riscv/boot/dts/canaan/sipeed_maixduino.dts
new file mode 100644
index 000000000000..cf605ba0d67e
--- /dev/null
+++ b/arch/riscv/boot/dts/canaan/sipeed_maixduino.dts
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com>
+ * Copyright (C) 2020 Western Digital Corporation or its affiliates.
+ */
+
+/dts-v1/;
+
+#include "k210.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+ model = "SiPeed MAIXDUINO";
+ compatible = "sipeed,maixduino", "canaan,kendryte-k210";
+
+ chosen {
+ bootargs = "earlycon console=ttySIF0";
+ stdout-path = "serial0:115200n8";
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ boot {
+ label = "BOOT";
+ linux,code = <BTN_0>;
+ gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ vcc_3v3: regulator-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+};
+
+&fpioa {
+ status = "okay";
+
+ uarths_pinctrl: uarths-pinmux {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>, /* Header "0" */
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>; /* Header "1" */
+ };
+
+ gpio_pinctrl: gpio-pinmux {
+ pinmux = <K210_FPIOA(8, K210_PCF_GPIO0)>,
+ <K210_FPIOA(9, K210_PCF_GPIO1)>;
+ };
+
+ gpiohs_pinctrl: gpiohs-pinmux {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>, /* BOOT */
+ <K210_FPIOA(21, K210_PCF_GPIOHS2)>, /* Header "2" */
+ <K210_FPIOA(22, K210_PCF_GPIOHS3)>, /* Header "3" */
+ <K210_FPIOA(23, K210_PCF_GPIOHS4)>, /* Header "4" */
+ <K210_FPIOA(24, K210_PCF_GPIOHS5)>, /* Header "5" */
+ <K210_FPIOA(32, K210_PCF_GPIOHS6)>, /* Header "6" */
+ <K210_FPIOA(15, K210_PCF_GPIOHS7)>, /* Header "7" */
+ <K210_FPIOA(14, K210_PCF_GPIOHS8)>, /* Header "8" */
+ <K210_FPIOA(13, K210_PCF_GPIOHS9)>, /* Header "9" */
+ <K210_FPIOA(12, K210_PCF_GPIOHS10)>, /* Header "10" */
+ <K210_FPIOA(11, K210_PCF_GPIOHS11)>, /* Header "11" */
+ <K210_FPIOA(10, K210_PCF_GPIOHS12)>, /* Header "12" */
+ <K210_FPIOA(3, K210_PCF_GPIOHS13)>; /* Header "13" */
+ };
+
+ i2s0_pinctrl: i2s0-pinmux {
+ pinmux = <K210_FPIOA(18, K210_PCF_I2S0_SCLK)>,
+ <K210_FPIOA(19, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(20, K210_PCF_I2S0_IN_D0)>;
+ };
+
+ spi1_pinctrl: spi1-pinmux {
+ pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(29, K210_PCF_GPIO2)>; /* cs */
+ };
+
+ i2c1_pinctrl: i2c1-pinmux {
+ pinmux = <K210_FPIOA(30, K210_PCF_I2C1_SCLK)>, /* Header "scl" */
+ <K210_FPIOA(31, K210_PCF_I2C1_SDA)>; /* Header "sda" */
+ };
+
+ i2s1_pinctrl: i2s1-pinmux {
+ pinmux = <K210_FPIOA(33, K210_PCF_I2S1_WS)>,
+ <K210_FPIOA(34, K210_PCF_I2S1_IN_D0)>,
+ <K210_FPIOA(35, K210_PCF_I2S1_SCLK)>;
+ };
+
+ spi0_pinctrl: spi0-pinmux {
+ pinmux = <K210_FPIOA(36, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(37, K210_PCF_GPIOHS21)>, /* rst */
+ <K210_FPIOA(38, K210_PCF_GPIOHS22)>, /* dc */
+ <K210_FPIOA(39, K210_PCF_SPI0_SCLK)>; /* wr */
+ };
+
+ dvp_pinctrl: dvp-pinmux {
+ pinmux = <K210_FPIOA(40, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(41, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(42, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(43, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(44, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(45, K210_PCF_DVP_HSYNC)>,
+ <K210_FPIOA(46, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(47, K210_PCF_DVP_PCLK)>;
+ };
+};
+
+&uarths0 {
+ pinctrl-0 = <&uarths_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&gpiohs_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio1 {
+ pinctrl-0 = <&gpio_pinctrl>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&i2s0 {
+ #sound-dai-cells = <1>;
+ pinctrl-0 = <&i2s0_pinctrl>;
+ pinctrl-names = "default";
+};
+
+&i2c1 {
+ pinctrl-0 = <&i2c1_pinctrl>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-0 = <&spi0_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+
+ panel@0 {
+ compatible = "sitronix,st7789v";
+ reg = <0>;
+ reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
+ dc-gpios = <&gpio0 22 0>;
+ spi-max-frequency = <15000000>;
+ power-supply = <&vcc_3v3>;
+ };
+};
+
+&spi1 {
+ pinctrl-0 = <&spi1_pinctrl>;
+ pinctrl-names = "default";
+ num-cs = <1>;
+ cs-gpios = <&gpio1_0 2 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ slot@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ voltage-ranges = <3300 3300>;
+ spi-max-frequency = <25000000>;
+ broken-cd;
+ };
+};
+
+&spi3 {
+ spi-flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
+ broken-flash-reset;
+ };
+};
diff --git a/arch/riscv/boot/dts/kendryte/Makefile b/arch/riscv/boot/dts/kendryte/Makefile
deleted file mode 100644
index 1a88e616f18e..000000000000
--- a/arch/riscv/boot/dts/kendryte/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_SOC_KENDRYTE_K210_DTB) += k210.dtb
-
-obj-$(CONFIG_SOC_KENDRYTE_K210_DTB_BUILTIN) += $(addsuffix .o, $(dtb-y))
diff --git a/arch/riscv/boot/dts/kendryte/k210.dts b/arch/riscv/boot/dts/kendryte/k210.dts
deleted file mode 100644
index 0d1f28fce6b2..000000000000
--- a/arch/riscv/boot/dts/kendryte/k210.dts
+++ /dev/null
@@ -1,23 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2020 Western Digital Corporation or its affiliates.
- */
-
-/dts-v1/;
-
-#include "k210.dtsi"
-
-/ {
- model = "Kendryte K210 generic";
- compatible = "kendryte,k210";
-
- chosen {
- bootargs = "earlycon console=ttySIF0";
- stdout-path = "serial0";
- };
-};
-
-&uarths0 {
- status = "okay";
-};
-
diff --git a/arch/riscv/boot/dts/kendryte/k210.dtsi b/arch/riscv/boot/dts/kendryte/k210.dtsi
deleted file mode 100644
index d2d0ff645632..000000000000
--- a/arch/riscv/boot/dts/kendryte/k210.dtsi
+++ /dev/null
@@ -1,125 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2019 Sean Anderson <seanga2@gmail.com>
- * Copyright (C) 2020 Western Digital Corporation or its affiliates.
- */
-#include <dt-bindings/clock/k210-clk.h>
-
-/ {
- /*
- * Although the K210 is a 64-bit CPU, the address bus is only 32-bits
- * wide, and the upper half of all addresses is ignored.
- */
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "kendryte,k210";
-
- aliases {
- serial0 = &uarths0;
- };
-
- /*
- * The K210 has an sv39 MMU following the priviledge specification v1.9.
- * Since this is a non-ratified draft specification, the kernel does not
- * support it and the K210 support enabled only for the !MMU case.
- * Be consistent with this by setting the CPUs MMU type to "none".
- */
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
- timebase-frequency = <7800000>;
- cpu0: cpu@0 {
- device_type = "cpu";
- reg = <0>;
- compatible = "kendryte,k210", "sifive,rocket0", "riscv";
- riscv,isa = "rv64imafdc";
- mmu-type = "none";
- i-cache-size = <0x8000>;
- i-cache-block-size = <64>;
- d-cache-size = <0x8000>;
- d-cache-block-size = <64>;
- clocks = <&sysctl K210_CLK_CPU>;
- clock-frequency = <390000000>;
- cpu0_intc: interrupt-controller {
- #interrupt-cells = <1>;
- interrupt-controller;
- compatible = "riscv,cpu-intc";
- };
- };
- cpu1: cpu@1 {
- device_type = "cpu";
- reg = <1>;
- compatible = "kendryte,k210", "sifive,rocket0", "riscv";
- riscv,isa = "rv64imafdc";
- mmu-type = "none";
- i-cache-size = <0x8000>;
- i-cache-block-size = <64>;
- d-cache-size = <0x8000>;
- d-cache-block-size = <64>;
- clocks = <&sysctl K210_CLK_CPU>;
- clock-frequency = <390000000>;
- cpu1_intc: interrupt-controller {
- #interrupt-cells = <1>;
- interrupt-controller;
- compatible = "riscv,cpu-intc";
- };
- };
- };
-
- sram: memory@80000000 {
- device_type = "memory";
- reg = <0x80000000 0x400000>,
- <0x80400000 0x200000>,
- <0x80600000 0x200000>;
- reg-names = "sram0", "sram1", "aisram";
- };
-
- clocks {
- in0: oscillator {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <26000000>;
- };
- };
-
- soc {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "kendryte,k210-soc", "simple-bus";
- ranges;
- interrupt-parent = <&plic0>;
-
- sysctl: sysctl@50440000 {
- compatible = "kendryte,k210-sysctl", "simple-mfd";
- reg = <0x50440000 0x1000>;
- #clock-cells = <1>;
- };
-
- clint0: clint@2000000 {
- #interrupt-cells = <1>;
- compatible = "riscv,clint0";
- reg = <0x2000000 0xC000>;
- interrupts-extended = <&cpu0_intc 3 &cpu0_intc 7
- &cpu1_intc 3 &cpu1_intc 7>;
- clocks = <&sysctl K210_CLK_ACLK>;
- };
-
- plic0: interrupt-controller@c000000 {
- #interrupt-cells = <1>;
- interrupt-controller;
- compatible = "kendryte,k210-plic0", "riscv,plic0";
- reg = <0xC000000 0x4000000>;
- interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 0xffffffff>,
- <&cpu1_intc 11>, <&cpu1_intc 0xffffffff>;
- riscv,ndev = <65>;
- riscv,max-priority = <7>;
- };
-
- uarths0: serial@38000000 {
- compatible = "kendryte,k210-uarths", "sifive,uart0";
- reg = <0x38000000 0x1000>;
- interrupts = <33>;
- clocks = <&sysctl K210_CLK_CPU>;
- };
- };
-};
diff --git a/arch/riscv/boot/dts/sifive/Makefile b/arch/riscv/boot/dts/sifive/Makefile
index 6d6189e6e4af..74c47fe9fc22 100644
--- a/arch/riscv/boot/dts/sifive/Makefile
+++ b/arch/riscv/boot/dts/sifive/Makefile
@@ -1,2 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_SOC_SIFIVE) += hifive-unleashed-a00.dtb
+dtb-$(CONFIG_SOC_SIFIVE) += hifive-unleashed-a00.dtb \
+ hifive-unmatched-a00.dtb
diff --git a/arch/riscv/boot/dts/sifive/fu740-c000.dtsi b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
new file mode 100644
index 000000000000..eeb4f8c3e0e7
--- /dev/null
+++ b/arch/riscv/boot/dts/sifive/fu740-c000.dtsi
@@ -0,0 +1,293 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020 SiFive, Inc */
+
+/dts-v1/;
+
+#include <dt-bindings/clock/sifive-fu740-prci.h>
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ compatible = "sifive,fu740-c000", "sifive,fu740";
+
+ aliases {
+ serial0 = &uart0;
+ serial1 = &uart1;
+ ethernet0 = &eth0;
+ };
+
+ chosen {
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu0: cpu@0 {
+ compatible = "sifive,bullet0", "riscv";
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <16384>;
+ next-level-cache = <&ccache>;
+ reg = <0x0>;
+ riscv,isa = "rv64imac";
+ status = "disabled";
+ cpu0_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ cpu1: cpu@1 {
+ compatible = "sifive,bullet0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <40>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <40>;
+ mmu-type = "riscv,sv39";
+ next-level-cache = <&ccache>;
+ reg = <0x1>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ cpu1_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ cpu2: cpu@2 {
+ compatible = "sifive,bullet0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <40>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <40>;
+ mmu-type = "riscv,sv39";
+ next-level-cache = <&ccache>;
+ reg = <0x2>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ cpu2_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ cpu3: cpu@3 {
+ compatible = "sifive,bullet0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <40>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <40>;
+ mmu-type = "riscv,sv39";
+ next-level-cache = <&ccache>;
+ reg = <0x3>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ cpu3_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ cpu4: cpu@4 {
+ compatible = "sifive,bullet0", "riscv";
+ d-cache-block-size = <64>;
+ d-cache-sets = <64>;
+ d-cache-size = <32768>;
+ d-tlb-sets = <1>;
+ d-tlb-size = <40>;
+ device_type = "cpu";
+ i-cache-block-size = <64>;
+ i-cache-sets = <128>;
+ i-cache-size = <32768>;
+ i-tlb-sets = <1>;
+ i-tlb-size = <40>;
+ mmu-type = "riscv,sv39";
+ next-level-cache = <&ccache>;
+ reg = <0x4>;
+ riscv,isa = "rv64imafdc";
+ tlb-split;
+ cpu4_intc: interrupt-controller {
+ #interrupt-cells = <1>;
+ compatible = "riscv,cpu-intc";
+ interrupt-controller;
+ };
+ };
+ };
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ compatible = "simple-bus";
+ ranges;
+ plic0: interrupt-controller@c000000 {
+ #interrupt-cells = <1>;
+ #address-cells = <0>;
+ compatible = "sifive,fu540-c000-plic", "sifive,plic-1.0.0";
+ reg = <0x0 0xc000000 0x0 0x4000000>;
+ riscv,ndev = <69>;
+ interrupt-controller;
+ interrupts-extended = <
+ &cpu0_intc 0xffffffff
+ &cpu1_intc 0xffffffff &cpu1_intc 9
+ &cpu2_intc 0xffffffff &cpu2_intc 9
+ &cpu3_intc 0xffffffff &cpu3_intc 9
+ &cpu4_intc 0xffffffff &cpu4_intc 9>;
+ };
+ prci: clock-controller@10000000 {
+ compatible = "sifive,fu740-c000-prci";
+ reg = <0x0 0x10000000 0x0 0x1000>;
+ clocks = <&hfclk>, <&rtcclk>;
+ #clock-cells = <1>;
+ };
+ uart0: serial@10010000 {
+ compatible = "sifive,fu740-c000-uart", "sifive,uart0";
+ reg = <0x0 0x10010000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <39>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ status = "disabled";
+ };
+ uart1: serial@10011000 {
+ compatible = "sifive,fu740-c000-uart", "sifive,uart0";
+ reg = <0x0 0x10011000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <40>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ status = "disabled";
+ };
+ i2c0: i2c@10030000 {
+ compatible = "sifive,fu740-c000-i2c", "sifive,i2c0";
+ reg = <0x0 0x10030000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <52>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ reg-shift = <2>;
+ reg-io-width = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ i2c1: i2c@10031000 {
+ compatible = "sifive,fu740-c000-i2c", "sifive,i2c0";
+ reg = <0x0 0x10031000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <53>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ reg-shift = <2>;
+ reg-io-width = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ qspi0: spi@10040000 {
+ compatible = "sifive,fu740-c000-spi", "sifive,spi0";
+ reg = <0x0 0x10040000 0x0 0x1000>,
+ <0x0 0x20000000 0x0 0x10000000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <41>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ qspi1: spi@10041000 {
+ compatible = "sifive,fu740-c000-spi", "sifive,spi0";
+ reg = <0x0 0x10041000 0x0 0x1000>,
+ <0x0 0x30000000 0x0 0x10000000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <42>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ spi0: spi@10050000 {
+ compatible = "sifive,fu740-c000-spi", "sifive,spi0";
+ reg = <0x0 0x10050000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <43>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ eth0: ethernet@10090000 {
+ compatible = "sifive,fu540-c000-gem";
+ interrupt-parent = <&plic0>;
+ interrupts = <55>;
+ reg = <0x0 0x10090000 0x0 0x2000>,
+ <0x0 0x100a0000 0x0 0x1000>;
+ local-mac-address = [00 00 00 00 00 00];
+ clock-names = "pclk", "hclk";
+ clocks = <&prci PRCI_CLK_GEMGXLPLL>,
+ <&prci PRCI_CLK_GEMGXLPLL>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+ pwm0: pwm@10020000 {
+ compatible = "sifive,fu740-c000-pwm", "sifive,pwm0";
+ reg = <0x0 0x10020000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <44>, <45>, <46>, <47>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ #pwm-cells = <3>;
+ status = "disabled";
+ };
+ pwm1: pwm@10021000 {
+ compatible = "sifive,fu740-c000-pwm", "sifive,pwm0";
+ reg = <0x0 0x10021000 0x0 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <48>, <49>, <50>, <51>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ #pwm-cells = <3>;
+ status = "disabled";
+ };
+ ccache: cache-controller@2010000 {
+ compatible = "sifive,fu740-c000-ccache", "cache";
+ cache-block-size = <64>;
+ cache-level = <2>;
+ cache-sets = <2048>;
+ cache-size = <2097152>;
+ cache-unified;
+ interrupt-parent = <&plic0>;
+ interrupts = <19 20 21 22>;
+ reg = <0x0 0x2010000 0x0 0x1000>;
+ };
+ gpio: gpio@10060000 {
+ compatible = "sifive,fu740-c000-gpio", "sifive,gpio0";
+ interrupt-parent = <&plic0>;
+ interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>,
+ <30>, <31>, <32>, <33>, <34>, <35>, <36>,
+ <37>, <38>;
+ reg = <0x0 0x10060000 0x0 0x1000>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ clocks = <&prci PRCI_CLK_PCLK>;
+ status = "disabled";
+ };
+ };
+};
diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
new file mode 100644
index 000000000000..b1c3c596578f
--- /dev/null
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -0,0 +1,253 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2020 SiFive, Inc */
+
+#include "fu740-c000.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/* Clock frequency (in Hz) of the PCB crystal for rtcclk */
+#define RTCCLK_FREQ 1000000
+
+/ {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ model = "SiFive HiFive Unmatched A00";
+ compatible = "sifive,hifive-unmatched-a00", "sifive,fu740-c000",
+ "sifive,fu740";
+
+ chosen {
+ stdout-path = "serial0";
+ };
+
+ cpus {
+ timebase-frequency = <RTCCLK_FREQ>;
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x0 0x80000000 0x2 0x00000000>;
+ };
+
+ soc {
+ };
+
+ hfclk: hfclk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <26000000>;
+ clock-output-names = "hfclk";
+ };
+
+ rtcclk: rtcclk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <RTCCLK_FREQ>;
+ clock-output-names = "rtcclk";
+ };
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&uart1 {
+ status = "okay";
+};
+
+&i2c0 {
+ status = "okay";
+
+ temperature-sensor@4c {
+ compatible = "ti,tmp451";
+ reg = <0x4c>;
+ interrupt-parent = <&gpio>;
+ interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
+ };
+
+ pmic@58 {
+ compatible = "dlg,da9063";
+ reg = <0x58>;
+ interrupt-parent = <&gpio>;
+ interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+
+ regulators {
+ vdd_bcore1: bcore1 {
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-min-microamp = <5000000>;
+ regulator-max-microamp = <5000000>;
+ regulator-always-on;
+ };
+
+ vdd_bcore2: bcore2 {
+ regulator-min-microvolt = <900000>;
+ regulator-max-microvolt = <900000>;
+ regulator-min-microamp = <5000000>;
+ regulator-max-microamp = <5000000>;
+ regulator-always-on;
+ };
+
+ vdd_bpro: bpro {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <2500000>;
+ regulator-max-microamp = <2500000>;
+ regulator-always-on;
+ };
+
+ vdd_bperi: bperi {
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1050000>;
+ regulator-min-microamp = <1500000>;
+ regulator-max-microamp = <1500000>;
+ regulator-always-on;
+ };
+
+ vdd_bmem: bmem {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-min-microamp = <3000000>;
+ regulator-max-microamp = <3000000>;
+ regulator-always-on;
+ };
+
+ vdd_bio: bio {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-min-microamp = <3000000>;
+ regulator-max-microamp = <3000000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo1: ldo1 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <100000>;
+ regulator-max-microamp = <100000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo2: ldo2 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo3: ldo3 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo4: ldo4 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo5: ldo5 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <100000>;
+ regulator-max-microamp = <100000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo6: ldo6 {
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo7: ldo7 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ldo8: ldo8 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ regulator-always-on;
+ };
+
+ vdd_ld09: ldo9 {
+ regulator-min-microvolt = <1050000>;
+ regulator-max-microvolt = <1050000>;
+ regulator-min-microamp = <200000>;
+ regulator-max-microamp = <200000>;
+ };
+
+ vdd_ldo10: ldo10 {
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1000000>;
+ regulator-min-microamp = <300000>;
+ regulator-max-microamp = <300000>;
+ };
+
+ vdd_ldo11: ldo11 {
+ regulator-min-microvolt = <2500000>;
+ regulator-max-microvolt = <2500000>;
+ regulator-min-microamp = <300000>;
+ regulator-max-microamp = <300000>;
+ regulator-always-on;
+ };
+ };
+ };
+};
+
+&qspi0 {
+ status = "okay";
+ flash@0 {
+ compatible = "issi,is25wp256", "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ m25p,fast-read;
+ spi-tx-bus-width = <4>;
+ spi-rx-bus-width = <4>;
+ };
+};
+
+&spi0 {
+ status = "okay";
+ mmc@0 {
+ compatible = "mmc-spi-slot";
+ reg = <0>;
+ spi-max-frequency = <20000000>;
+ voltage-ranges = <3300 3300>;
+ disable-wp;
+ };
+};
+
+&eth0 {
+ status = "okay";
+ phy-mode = "gmii";
+ phy-handle = <&phy0>;
+ phy0: ethernet-phy@0 {
+ reg = <0>;
+ };
+};
+
+&pwm0 {
+ status = "okay";
+};
+
+&pwm1 {
+ status = "okay";
+};
+
+&gpio {
+ status = "okay";
+};
diff --git a/arch/riscv/configs/nommu_k210_defconfig b/arch/riscv/configs/nommu_k210_defconfig
index cd1df62b13c7..b16a2a12c82a 100644
--- a/arch/riscv/configs/nommu_k210_defconfig
+++ b/arch/riscv/configs/nommu_k210_defconfig
@@ -1,17 +1,19 @@
# CONFIG_CPU_ISOLATION is not set
-CONFIG_LOG_BUF_SHIFT=15
+CONFIG_LOG_BUF_SHIFT=13
CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12
CONFIG_BLK_DEV_INITRD=y
-CONFIG_INITRAMFS_FORCE=y
+# CONFIG_RD_GZIP is not set
# CONFIG_RD_BZIP2 is not set
# CONFIG_RD_LZMA is not set
# CONFIG_RD_XZ is not set
# CONFIG_RD_LZO is not set
# CONFIG_RD_LZ4 is not set
+# CONFIG_RD_ZSTD is not set
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
# CONFIG_SYSFS_SYSCALL is not set
# CONFIG_FHANDLE is not set
# CONFIG_BASE_FULL is not set
+# CONFIG_FUTEX is not set
# CONFIG_EPOLL is not set
# CONFIG_SIGNALFD is not set
# CONFIG_TIMERFD is not set
@@ -25,15 +27,17 @@ CONFIG_EMBEDDED=y
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SLOB=y
-# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_MMU is not set
-CONFIG_SOC_KENDRYTE=y
+CONFIG_SOC_CANAAN=y
+CONFIG_SOC_CANAAN_K210_DTB_SOURCE="k210_generic"
CONFIG_MAXPHYSMEM_2GB=y
CONFIG_SMP=y
CONFIG_NR_CPUS=2
CONFIG_CMDLINE="earlycon console=ttySIF0"
CONFIG_CMDLINE_FORCE=y
-CONFIG_JUMP_LABEL=y
+# CONFIG_SECCOMP is not set
+# CONFIG_STACKPROTECTOR is not set
+# CONFIG_GCC_PLUGINS is not set
# CONFIG_BLOCK is not set
CONFIG_BINFMT_FLAT=y
# CONFIG_COREDUMP is not set
@@ -41,23 +45,47 @@ CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
# CONFIG_ALLOW_DEV_COREDUMP is not set
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_UNIX98_PTYS is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LDISC_AUTOLOAD is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_DEVMEM is not set
+CONFIG_I2C=y
+# CONFIG_I2C_COMPAT is not set
+CONFIG_I2C_CHARDEV=y
+# CONFIG_I2C_HELPER_AUTO is not set
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_SPI=y
+# CONFIG_SPI_MEM is not set
+CONFIG_SPI_DESIGNWARE=y
+CONFIG_SPI_DW_MMIO=y
+# CONFIG_GPIO_CDEV_V1 is not set
+CONFIG_GPIO_DWAPB=y
+CONFIG_GPIO_SIFIVE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
# CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
-# CONFIG_HID is not set
# CONFIG_USB_SUPPORT is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_USER=y
# CONFIG_VIRTIO_MENU is not set
+# CONFIG_VHOST_MENU is not set
+# CONFIG_SURFACE_PLATFORMS is not set
+# CONFIG_FILE_LOCKING is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_MISC_FILESYSTEMS is not set
CONFIG_LSM="[]"
CONFIG_PRINTK_TIME=y
+# CONFIG_SYMBOLIC_ERRNAME is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+# CONFIG_FRAME_POINTER is not set
# CONFIG_DEBUG_MISC is not set
CONFIG_PANIC_ON_OOPS=y
# CONFIG_SCHED_DEBUG is not set
diff --git a/arch/riscv/configs/nommu_k210_sdcard_defconfig b/arch/riscv/configs/nommu_k210_sdcard_defconfig
new file mode 100644
index 000000000000..61f887f65419
--- /dev/null
+++ b/arch/riscv/configs/nommu_k210_sdcard_defconfig
@@ -0,0 +1,92 @@
+# CONFIG_CPU_ISOLATION is not set
+CONFIG_LOG_BUF_SHIFT=13
+CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT=12
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_SYSFS_SYSCALL is not set
+# CONFIG_FHANDLE is not set
+# CONFIG_BASE_FULL is not set
+# CONFIG_FUTEX is not set
+# CONFIG_EPOLL is not set
+# CONFIG_SIGNALFD is not set
+# CONFIG_TIMERFD is not set
+# CONFIG_EVENTFD is not set
+# CONFIG_AIO is not set
+# CONFIG_IO_URING is not set
+# CONFIG_ADVISE_SYSCALLS is not set
+# CONFIG_MEMBARRIER is not set
+# CONFIG_KALLSYMS is not set
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SLOB=y
+# CONFIG_MMU is not set
+CONFIG_SOC_CANAAN=y
+CONFIG_SOC_CANAAN_K210_DTB_SOURCE="k210_generic"
+CONFIG_MAXPHYSMEM_2GB=y
+CONFIG_SMP=y
+CONFIG_NR_CPUS=2
+CONFIG_CMDLINE="earlycon console=ttySIF0 rootdelay=2 root=/dev/mmcblk0p1 ro"
+CONFIG_CMDLINE_FORCE=y
+# CONFIG_SECCOMP is not set
+# CONFIG_STACKPROTECTOR is not set
+# CONFIG_GCC_PLUGINS is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
+CONFIG_BINFMT_FLAT=y
+# CONFIG_COREDUMP is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FW_LOADER is not set
+# CONFIG_ALLOW_DEV_COREDUMP is not set
+# CONFIG_BLK_DEV is not set
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_LDISC_AUTOLOAD is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_DEVMEM is not set
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+# CONFIG_I2C_HELPER_AUTO is not set
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_SPI=y
+# CONFIG_SPI_MEM is not set
+CONFIG_SPI_DESIGNWARE=y
+CONFIG_SPI_DW_MMIO=y
+# CONFIG_GPIO_CDEV_V1 is not set
+CONFIG_GPIO_DWAPB=y
+CONFIG_GPIO_SIFIVE=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_MMC=y
+# CONFIG_PWRSEQ_EMMC is not set
+# CONFIG_PWRSEQ_SIMPLE is not set
+CONFIG_MMC_SPI=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_USER=y
+# CONFIG_VIRTIO_MENU is not set
+# CONFIG_VHOST_MENU is not set
+# CONFIG_SURFACE_PLATFORMS is not set
+CONFIG_EXT2_FS=y
+# CONFIG_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_LSM="[]"
+CONFIG_PRINTK_TIME=y
+# CONFIG_SYMBOLIC_ERRNAME is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+# CONFIG_FRAME_POINTER is not set
+# CONFIG_DEBUG_MISC is not set
+CONFIG_PANIC_ON_OOPS=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_RCU_TRACE is not set
+# CONFIG_FTRACE is not set
+# CONFIG_RUNTIME_TESTING_MENU is not set
diff --git a/arch/riscv/include/asm/bug.h b/arch/riscv/include/asm/bug.h
index d6f1ec08d97b..d3804a2f9aad 100644
--- a/arch/riscv/include/asm/bug.h
+++ b/arch/riscv/include/asm/bug.h
@@ -85,6 +85,7 @@ do { \
struct pt_regs;
struct task_struct;
+void __show_regs(struct pt_regs *regs);
void die(struct pt_regs *regs, const char *str);
void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr);
diff --git a/arch/riscv/include/asm/csr.h b/arch/riscv/include/asm/csr.h
index cec462e198ce..caadfc1d7487 100644
--- a/arch/riscv/include/asm/csr.h
+++ b/arch/riscv/include/asm/csr.h
@@ -41,10 +41,16 @@
#define SATP_PPN _AC(0x003FFFFF, UL)
#define SATP_MODE_32 _AC(0x80000000, UL)
#define SATP_MODE SATP_MODE_32
+#define SATP_ASID_BITS 9
+#define SATP_ASID_SHIFT 22
+#define SATP_ASID_MASK _AC(0x1FF, UL)
#else
#define SATP_PPN _AC(0x00000FFFFFFFFFFF, UL)
#define SATP_MODE_39 _AC(0x8000000000000000, UL)
#define SATP_MODE SATP_MODE_39
+#define SATP_ASID_BITS 16
+#define SATP_ASID_SHIFT 44
+#define SATP_ASID_MASK _AC(0xFFFF, UL)
#endif
/* Exception cause high bit - is an interrupt if set */
diff --git a/arch/riscv/include/asm/kasan.h b/arch/riscv/include/asm/kasan.h
index b04028c6218c..a2b3d9cdbc86 100644
--- a/arch/riscv/include/asm/kasan.h
+++ b/arch/riscv/include/asm/kasan.h
@@ -8,12 +8,28 @@
#ifdef CONFIG_KASAN
+/*
+ * The following comment was copied from arm64:
+ * KASAN_SHADOW_START: beginning of the kernel virtual addresses.
+ * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/N of kernel virtual addresses,
+ * where N = (1 << KASAN_SHADOW_SCALE_SHIFT).
+ *
+ * KASAN_SHADOW_OFFSET:
+ * This value is used to map an address to the corresponding shadow
+ * address by the following formula:
+ * shadow_addr = (address >> KASAN_SHADOW_SCALE_SHIFT) + KASAN_SHADOW_OFFSET
+ *
+ * (1 << (64 - KASAN_SHADOW_SCALE_SHIFT)) shadow addresses that lie in range
+ * [KASAN_SHADOW_OFFSET, KASAN_SHADOW_END) cover all 64-bits of virtual
+ * addresses. So KASAN_SHADOW_OFFSET should satisfy the following equation:
+ * KASAN_SHADOW_OFFSET = KASAN_SHADOW_END -
+ * (1ULL << (64 - KASAN_SHADOW_SCALE_SHIFT))
+ */
#define KASAN_SHADOW_SCALE_SHIFT 3
-#define KASAN_SHADOW_SIZE (UL(1) << (38 - KASAN_SHADOW_SCALE_SHIFT))
-#define KASAN_SHADOW_START KERN_VIRT_START /* 2^64 - 2^38 */
+#define KASAN_SHADOW_SIZE (UL(1) << ((CONFIG_VA_BITS - 1) - KASAN_SHADOW_SCALE_SHIFT))
+#define KASAN_SHADOW_START KERN_VIRT_START
#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
-
#define KASAN_SHADOW_OFFSET (KASAN_SHADOW_END - (1ULL << \
(64 - KASAN_SHADOW_SCALE_SHIFT)))
diff --git a/arch/riscv/include/asm/kprobes.h b/arch/riscv/include/asm/kprobes.h
index 56a98ea30731..4647d38018f6 100644
--- a/arch/riscv/include/asm/kprobes.h
+++ b/arch/riscv/include/asm/kprobes.h
@@ -11,4 +11,44 @@
#include <asm-generic/kprobes.h>
+#ifdef CONFIG_KPROBES
+#include <linux/types.h>
+#include <linux/ptrace.h>
+#include <linux/percpu.h>
+
+#define __ARCH_WANT_KPROBES_INSN_SLOT
+#define MAX_INSN_SIZE 2
+
+#define flush_insn_slot(p) do { } while (0)
+#define kretprobe_blacklist_size 0
+
+#include <asm/probes.h>
+
+struct prev_kprobe {
+ struct kprobe *kp;
+ unsigned int status;
+};
+
+/* Single step context for kprobe */
+struct kprobe_step_ctx {
+ unsigned long ss_pending;
+ unsigned long match_addr;
+};
+
+/* per-cpu kprobe control block */
+struct kprobe_ctlblk {
+ unsigned int kprobe_status;
+ unsigned long saved_status;
+ struct prev_kprobe prev_kprobe;
+ struct kprobe_step_ctx ss_ctx;
+};
+
+void arch_remove_kprobe(struct kprobe *p);
+int kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr);
+bool kprobe_breakpoint_handler(struct pt_regs *regs);
+bool kprobe_single_step_handler(struct pt_regs *regs);
+void kretprobe_trampoline(void);
+void __kprobes *trampoline_probe_handler(struct pt_regs *regs);
+
+#endif /* CONFIG_KPROBES */
#endif /* _ASM_RISCV_KPROBES_H */
diff --git a/arch/riscv/include/asm/mmu.h b/arch/riscv/include/asm/mmu.h
index dabcf2cfb3dc..0099dc116168 100644
--- a/arch/riscv/include/asm/mmu.h
+++ b/arch/riscv/include/asm/mmu.h
@@ -12,6 +12,8 @@
typedef struct {
#ifndef CONFIG_MMU
unsigned long end_brk;
+#else
+ atomic_long_t id;
#endif
void *vdso;
#ifdef CONFIG_SMP
diff --git a/arch/riscv/include/asm/mmu_context.h b/arch/riscv/include/asm/mmu_context.h
index 250defa06f3a..b0659413a080 100644
--- a/arch/riscv/include/asm/mmu_context.h
+++ b/arch/riscv/include/asm/mmu_context.h
@@ -23,6 +23,16 @@ static inline void activate_mm(struct mm_struct *prev,
switch_mm(prev, next, NULL);
}
+#define init_new_context init_new_context
+static inline int init_new_context(struct task_struct *tsk,
+ struct mm_struct *mm)
+{
+#ifdef CONFIG_MMU
+ atomic_long_set(&mm->context.id, 0);
+#endif
+ return 0;
+}
+
#include <asm-generic/mmu_context.h>
#endif /* _ASM_RISCV_MMU_CONTEXT_H */
diff --git a/arch/riscv/include/asm/mmzone.h b/arch/riscv/include/asm/mmzone.h
new file mode 100644
index 000000000000..fa17e01d9ab2
--- /dev/null
+++ b/arch/riscv/include/asm/mmzone.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_MMZONE_H
+#define __ASM_MMZONE_H
+
+#ifdef CONFIG_NUMA
+
+#include <asm/numa.h>
+
+extern struct pglist_data *node_data[];
+#define NODE_DATA(nid) (node_data[(nid)])
+
+#endif /* CONFIG_NUMA */
+#endif /* __ASM_MMZONE_H */
diff --git a/arch/riscv/include/asm/numa.h b/arch/riscv/include/asm/numa.h
new file mode 100644
index 000000000000..8c8cf4297cc3
--- /dev/null
+++ b/arch/riscv/include/asm/numa.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_NUMA_H
+#define __ASM_NUMA_H
+
+#include <asm/topology.h>
+#include <asm-generic/numa.h>
+
+#endif /* __ASM_NUMA_H */
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 64a675c5c30a..adc9d26f3d75 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -97,9 +97,6 @@ extern unsigned long pfn_base;
#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
#endif /* CONFIG_MMU */
-extern unsigned long max_low_pfn;
-extern unsigned long min_low_pfn;
-
#define __pa_to_va_nodebug(x) ((void *)((unsigned long) (x) + va_pa_offset))
#define __va_to_pa_nodebug(x) ((unsigned long)(x) - va_pa_offset)
diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
index 1c473a1bd986..658e112c3ce7 100644
--- a/arch/riscv/include/asm/pci.h
+++ b/arch/riscv/include/asm/pci.h
@@ -32,6 +32,20 @@ static inline int pci_proc_domain(struct pci_bus *bus)
/* always show the domain in /proc */
return 1;
}
+
+#ifdef CONFIG_NUMA
+
+static inline int pcibus_to_node(struct pci_bus *bus)
+{
+ return dev_to_node(&bus->dev);
+}
+#ifndef cpumask_of_pcibus
+#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
+ cpu_all_mask : \
+ cpumask_of_node(pcibus_to_node(bus)))
+#endif
+#endif /* CONFIG_NUMA */
+
#endif /* CONFIG_PCI */
#endif /* _ASM_RISCV_PCI_H */
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 251e1db088fa..ebf817c1bdf4 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -186,6 +186,11 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
return (unsigned long)pfn_to_virt(pmd_val(pmd) >> _PAGE_PFN_SHIFT);
}
+static inline pte_t pmd_pte(pmd_t pmd)
+{
+ return __pte(pmd_val(pmd));
+}
+
/* Yields the page frame number (PFN) of a page table entry */
static inline unsigned long pte_pfn(pte_t pte)
{
@@ -289,6 +294,21 @@ static inline pte_t pte_mkhuge(pte_t pte)
return pte;
}
+#ifdef CONFIG_NUMA_BALANCING
+/*
+ * See the comment in include/asm-generic/pgtable.h
+ */
+static inline int pte_protnone(pte_t pte)
+{
+ return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_PROT_NONE)) == _PAGE_PROT_NONE;
+}
+
+static inline int pmd_protnone(pmd_t pmd)
+{
+ return pte_protnone(pmd_pte(pmd));
+}
+#endif
+
/* Modify page protection bits */
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
@@ -468,6 +488,7 @@ extern void *dtb_early_va;
extern uintptr_t dtb_early_pa;
void setup_bootmem(void);
void paging_init(void);
+void misc_mem_init(void);
#define FIRST_USER_ADDRESS 0
diff --git a/arch/riscv/include/asm/probes.h b/arch/riscv/include/asm/probes.h
new file mode 100644
index 000000000000..a787e6d537b9
--- /dev/null
+++ b/arch/riscv/include/asm/probes.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_RISCV_PROBES_H
+#define _ASM_RISCV_PROBES_H
+
+typedef u32 probe_opcode_t;
+typedef bool (probes_handler_t) (u32 opcode, unsigned long addr, struct pt_regs *);
+
+/* architecture specific copy of original instruction */
+struct arch_probe_insn {
+ probe_opcode_t *insn;
+ probes_handler_t *handler;
+ /* restore address after simulation */
+ unsigned long restore;
+};
+
+#ifdef CONFIG_KPROBES
+typedef u32 kprobe_opcode_t;
+struct arch_specific_insn {
+ struct arch_probe_insn api;
+};
+#endif
+
+#endif /* _ASM_RISCV_PROBES_H */
diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h
index bdddcd5c1b71..3a240037bde2 100644
--- a/arch/riscv/include/asm/processor.h
+++ b/arch/riscv/include/asm/processor.h
@@ -34,6 +34,7 @@ struct thread_struct {
unsigned long sp; /* Kernel mode stack */
unsigned long s[12]; /* s[0]: frame pointer */
struct __riscv_d_ext_state fstate;
+ unsigned long bad_cause;
};
#define INIT_THREAD { \
diff --git a/arch/riscv/include/asm/ptrace.h b/arch/riscv/include/asm/ptrace.h
index ee49f80c9533..cb4abb639e8d 100644
--- a/arch/riscv/include/asm/ptrace.h
+++ b/arch/riscv/include/asm/ptrace.h
@@ -8,6 +8,7 @@
#include <uapi/asm/ptrace.h>
#include <asm/csr.h>
+#include <linux/compiler.h>
#ifndef __ASSEMBLY__
@@ -60,6 +61,7 @@ struct pt_regs {
#define user_mode(regs) (((regs)->status & SR_PP) == 0)
+#define MAX_REG_OFFSET offsetof(struct pt_regs, orig_a0)
/* Helpers for working with the instruction pointer */
static inline unsigned long instruction_pointer(struct pt_regs *regs)
@@ -85,6 +87,12 @@ static inline void user_stack_pointer_set(struct pt_regs *regs,
regs->sp = val;
}
+/* Valid only for Kernel mode traps. */
+static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
+{
+ return regs->sp;
+}
+
/* Helpers for working with the frame pointer */
static inline unsigned long frame_pointer(struct pt_regs *regs)
{
@@ -101,6 +109,33 @@ static inline unsigned long regs_return_value(struct pt_regs *regs)
return regs->a0;
}
+static inline void regs_set_return_value(struct pt_regs *regs,
+ unsigned long val)
+{
+ regs->a0 = val;
+}
+
+extern int regs_query_register_offset(const char *name);
+extern unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
+ unsigned int n);
+
+/**
+ * regs_get_register() - get register value from its offset
+ * @regs: pt_regs from which register value is gotten
+ * @offset: offset of the register.
+ *
+ * regs_get_register returns the value of a register whose offset from @regs.
+ * The @offset is the offset of the register in struct pt_regs.
+ * If @offset is bigger than MAX_REG_OFFSET, this returns 0.
+ */
+static inline unsigned long regs_get_register(struct pt_regs *regs,
+ unsigned int offset)
+{
+ if (unlikely(offset > MAX_REG_OFFSET))
+ return 0;
+
+ return *(unsigned long *)((unsigned long)regs + offset);
+}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_RISCV_PTRACE_H */
diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index 653edb25d495..99895d9c3bdd 100644
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -89,7 +89,7 @@ struct sbiret {
long value;
};
-int sbi_init(void);
+void sbi_init(void);
struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4,
@@ -100,13 +100,13 @@ int sbi_console_getchar(void);
void sbi_set_timer(uint64_t stime_value);
void sbi_shutdown(void);
void sbi_clear_ipi(void);
-void sbi_send_ipi(const unsigned long *hart_mask);
-void sbi_remote_fence_i(const unsigned long *hart_mask);
-void sbi_remote_sfence_vma(const unsigned long *hart_mask,
+int sbi_send_ipi(const unsigned long *hart_mask);
+int sbi_remote_fence_i(const unsigned long *hart_mask);
+int sbi_remote_sfence_vma(const unsigned long *hart_mask,
unsigned long start,
unsigned long size);
-void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
+int sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
unsigned long start,
unsigned long size,
unsigned long asid);
@@ -147,11 +147,7 @@ static inline unsigned long sbi_minor_version(void)
int sbi_err_map_linux_errno(int err);
#else /* CONFIG_RISCV_SBI */
-/* stubs for code that is only reachable under IS_ENABLED(CONFIG_RISCV_SBI): */
-void sbi_set_timer(uint64_t stime_value);
-void sbi_clear_ipi(void);
-void sbi_send_ipi(const unsigned long *hart_mask);
-void sbi_remote_fence_i(const unsigned long *hart_mask);
-void sbi_init(void);
+static inline int sbi_remote_fence_i(const unsigned long *hart_mask) { return -1; }
+static inline void sbi_init(void) {}
#endif /* CONFIG_RISCV_SBI */
#endif /* _ASM_RISCV_SBI_H */
diff --git a/arch/riscv/include/asm/set_memory.h b/arch/riscv/include/asm/set_memory.h
index 8b80c80c7f1a..6887b3d9f371 100644
--- a/arch/riscv/include/asm/set_memory.h
+++ b/arch/riscv/include/asm/set_memory.h
@@ -22,7 +22,7 @@ static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
-static inline void protect_kernel_text_data(void) {};
+static inline void protect_kernel_text_data(void) {}
static inline int set_memory_rw_nx(unsigned long addr, int numpages) { return 0; }
#endif
diff --git a/arch/riscv/include/asm/soc.h b/arch/riscv/include/asm/soc.h
index 6c8363b1f327..f494066051a2 100644
--- a/arch/riscv/include/asm/soc.h
+++ b/arch/riscv/include/asm/soc.h
@@ -21,42 +21,4 @@ void soc_early_init(void);
extern unsigned long __soc_early_init_table_start;
extern unsigned long __soc_early_init_table_end;
-/*
- * Allows Linux to provide a device tree, which is necessary for SOCs that
- * don't provide a useful one on their own.
- */
-struct soc_builtin_dtb {
- unsigned long vendor_id;
- unsigned long arch_id;
- unsigned long imp_id;
- void *(*dtb_func)(void);
-};
-
-/*
- * The argument name must specify a valid DTS file name without the dts
- * extension.
- */
-#define SOC_BUILTIN_DTB_DECLARE(name, vendor, arch, impl) \
- extern void *__dtb_##name##_begin; \
- \
- static __init __used \
- void *__soc_builtin_dtb_f__##name(void) \
- { \
- return (void *)&__dtb_##name##_begin; \
- } \
- \
- static const struct soc_builtin_dtb __soc_builtin_dtb__##name \
- __used __section("__soc_builtin_dtb_table") = \
- { \
- .vendor_id = vendor, \
- .arch_id = arch, \
- .imp_id = impl, \
- .dtb_func = __soc_builtin_dtb_f__##name, \
- }
-
-extern unsigned long __soc_builtin_dtb_table_start;
-extern unsigned long __soc_builtin_dtb_table_end;
-
-void *soc_lookup_builtin_dtb(void);
-
#endif
diff --git a/arch/riscv/include/asm/stackprotector.h b/arch/riscv/include/asm/stackprotector.h
index 5962f8891f06..09093af46565 100644
--- a/arch/riscv/include/asm/stackprotector.h
+++ b/arch/riscv/include/asm/stackprotector.h
@@ -24,6 +24,7 @@ static __always_inline void boot_init_stack_canary(void)
canary &= CANARY_MASK;
current->stack_canary = canary;
- __stack_chk_guard = current->stack_canary;
+ if (!IS_ENABLED(CONFIG_STACKPROTECTOR_PER_TASK))
+ __stack_chk_guard = current->stack_canary;
}
#endif /* _ASM_RISCV_STACKPROTECTOR_H */
diff --git a/arch/riscv/include/asm/stacktrace.h b/arch/riscv/include/asm/stacktrace.h
index 470a65c4ccdc..3450c1912afd 100644
--- a/arch/riscv/include/asm/stacktrace.h
+++ b/arch/riscv/include/asm/stacktrace.h
@@ -13,5 +13,7 @@ struct stackframe {
extern void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
bool (*fn)(void *, unsigned long), void *arg);
+extern void dump_backtrace(struct pt_regs *regs, struct task_struct *task,
+ const char *loglvl);
#endif /* _ASM_RISCV_STACKTRACE_H */
diff --git a/arch/riscv/include/asm/thread_info.h b/arch/riscv/include/asm/thread_info.h
index 97bf5a1575d2..0e549a3089b3 100644
--- a/arch/riscv/include/asm/thread_info.h
+++ b/arch/riscv/include/asm/thread_info.h
@@ -75,6 +75,7 @@ struct thread_info {
#define TIF_SYSCALL_AUDIT 7 /* syscall auditing */
#define TIF_SECCOMP 8 /* syscall secure computing */
#define TIF_NOTIFY_SIGNAL 9 /* signal notifications exist */
+#define TIF_UPROBE 10 /* uprobe breakpoint or singlestep */
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
@@ -84,10 +85,11 @@ struct thread_info {
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
+#define _TIF_UPROBE (1 << TIF_UPROBE)
#define _TIF_WORK_MASK \
(_TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NEED_RESCHED | \
- _TIF_NOTIFY_SIGNAL)
+ _TIF_NOTIFY_SIGNAL | _TIF_UPROBE)
#define _TIF_SYSCALL_WORK \
(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_TRACEPOINT | _TIF_SYSCALL_AUDIT | \
diff --git a/arch/riscv/include/asm/uprobes.h b/arch/riscv/include/asm/uprobes.h
new file mode 100644
index 000000000000..f2183e00fdd2
--- /dev/null
+++ b/arch/riscv/include/asm/uprobes.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _ASM_RISCV_UPROBES_H
+#define _ASM_RISCV_UPROBES_H
+
+#include <asm/probes.h>
+#include <asm/patch.h>
+#include <asm/bug.h>
+
+#define MAX_UINSN_BYTES 8
+
+#ifdef CONFIG_RISCV_ISA_C
+#define UPROBE_SWBP_INSN __BUG_INSN_16
+#define UPROBE_SWBP_INSN_SIZE 2
+#else
+#define UPROBE_SWBP_INSN __BUG_INSN_32
+#define UPROBE_SWBP_INSN_SIZE 4
+#endif
+#define UPROBE_XOL_SLOT_BYTES MAX_UINSN_BYTES
+
+typedef u32 uprobe_opcode_t;
+
+struct arch_uprobe_task {
+ unsigned long saved_cause;
+};
+
+struct arch_uprobe {
+ union {
+ u8 insn[MAX_UINSN_BYTES];
+ u8 ixol[MAX_UINSN_BYTES];
+ };
+ struct arch_probe_insn api;
+ unsigned long insn_size;
+ bool simulate;
+};
+
+bool uprobe_breakpoint_handler(struct pt_regs *regs);
+bool uprobe_single_step_handler(struct pt_regs *regs);
+
+#endif /* _ASM_RISCV_UPROBES_H */
diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
index f6caf4d9ca15..3dc0abde988a 100644
--- a/arch/riscv/kernel/Makefile
+++ b/arch/riscv/kernel/Makefile
@@ -4,8 +4,9 @@
#
ifdef CONFIG_FTRACE
-CFLAGS_REMOVE_ftrace.o = -pg
-CFLAGS_REMOVE_patch.o = -pg
+CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_patch.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_sbi.o = $(CC_FLAGS_FTRACE)
endif
extra-y += head.o
@@ -29,6 +30,7 @@ obj-y += riscv_ksyms.o
obj-y += stacktrace.o
obj-y += cacheinfo.o
obj-y += patch.o
+obj-y += probes/
obj-$(CONFIG_MMU) += vdso.o vdso/
obj-$(CONFIG_RISCV_M_MODE) += traps_misaligned.o
diff --git a/arch/riscv/kernel/asm-offsets.c b/arch/riscv/kernel/asm-offsets.c
index b79ffa3561fd..9ef33346853c 100644
--- a/arch/riscv/kernel/asm-offsets.c
+++ b/arch/riscv/kernel/asm-offsets.c
@@ -68,6 +68,9 @@ void asm_offsets(void)
OFFSET(TASK_THREAD_F30, task_struct, thread.fstate.f[30]);
OFFSET(TASK_THREAD_F31, task_struct, thread.fstate.f[31]);
OFFSET(TASK_THREAD_FCSR, task_struct, thread.fstate.fcsr);
+#ifdef CONFIG_STACKPROTECTOR
+ OFFSET(TSK_STACK_CANARY, task_struct, stack_canary);
+#endif
DEFINE(PT_SIZE, sizeof(struct pt_regs));
OFFSET(PT_EPC, pt_regs, epc);
diff --git a/arch/riscv/kernel/ftrace.c b/arch/riscv/kernel/ftrace.c
index 765b62434f30..7f1e5203de88 100644
--- a/arch/riscv/kernel/ftrace.c
+++ b/arch/riscv/kernel/ftrace.c
@@ -72,29 +72,56 @@ static int __ftrace_modify_call(unsigned long hook_pos, unsigned long target,
return 0;
}
+/*
+ * Put 5 instructions with 16 bytes at the front of function within
+ * patchable function entry nops' area.
+ *
+ * 0: REG_S ra, -SZREG(sp)
+ * 1: auipc ra, 0x?
+ * 2: jalr -?(ra)
+ * 3: REG_L ra, -SZREG(sp)
+ *
+ * So the opcodes is:
+ * 0: 0xfe113c23 (sd)/0xfe112e23 (sw)
+ * 1: 0x???????? -> auipc
+ * 2: 0x???????? -> jalr
+ * 3: 0xff813083 (ld)/0xffc12083 (lw)
+ */
+#if __riscv_xlen == 64
+#define INSN0 0xfe113c23
+#define INSN3 0xff813083
+#elif __riscv_xlen == 32
+#define INSN0 0xfe112e23
+#define INSN3 0xffc12083
+#endif
+
+#define FUNC_ENTRY_SIZE 16
+#define FUNC_ENTRY_JMP 4
+
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
- int ret = ftrace_check_current_call(rec->ip, NULL);
+ unsigned int call[4] = {INSN0, 0, 0, INSN3};
+ unsigned long target = addr;
+ unsigned long caller = rec->ip + FUNC_ENTRY_JMP;
- if (ret)
- return ret;
+ call[1] = to_auipc_insn((unsigned int)(target - caller));
+ call[2] = to_jalr_insn((unsigned int)(target - caller));
- return __ftrace_modify_call(rec->ip, addr, true);
+ if (patch_text_nosync((void *)rec->ip, call, FUNC_ENTRY_SIZE))
+ return -EPERM;
+
+ return 0;
}
int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long addr)
{
- unsigned int call[2];
- int ret;
+ unsigned int nops[4] = {NOP4, NOP4, NOP4, NOP4};
- make_call(rec->ip, addr, call);
- ret = ftrace_check_current_call(rec->ip, call);
-
- if (ret)
- return ret;
+ if (patch_text_nosync((void *)rec->ip, nops, FUNC_ENTRY_SIZE))
+ return -EPERM;
- return __ftrace_modify_call(rec->ip, addr, false);
+ return 0;
}
@@ -139,15 +166,16 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
unsigned long addr)
{
unsigned int call[2];
+ unsigned long caller = rec->ip + FUNC_ENTRY_JMP;
int ret;
- make_call(rec->ip, old_addr, call);
- ret = ftrace_check_current_call(rec->ip, call);
+ make_call(caller, old_addr, call);
+ ret = ftrace_check_current_call(caller, call);
if (ret)
return ret;
- return __ftrace_modify_call(rec->ip, addr, true);
+ return __ftrace_modify_call(caller, addr, true);
}
#endif
@@ -176,53 +204,30 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
#ifdef CONFIG_DYNAMIC_FTRACE
extern void ftrace_graph_call(void);
+extern void ftrace_graph_regs_call(void);
int ftrace_enable_ftrace_graph_caller(void)
{
- unsigned int call[2];
- static int init_graph = 1;
int ret;
- make_call(&ftrace_graph_call, &ftrace_stub, call);
-
- /*
- * When enabling graph tracer for the first time, ftrace_graph_call
- * should contains a call to ftrace_stub. Once it has been disabled,
- * the 8-bytes at the position becomes NOPs.
- */
- if (init_graph) {
- ret = ftrace_check_current_call((unsigned long)&ftrace_graph_call,
- call);
- init_graph = 0;
- } else {
- ret = ftrace_check_current_call((unsigned long)&ftrace_graph_call,
- NULL);
- }
-
+ ret = __ftrace_modify_call((unsigned long)&ftrace_graph_call,
+ (unsigned long)&prepare_ftrace_return, true);
if (ret)
return ret;
- return __ftrace_modify_call((unsigned long)&ftrace_graph_call,
+ return __ftrace_modify_call((unsigned long)&ftrace_graph_regs_call,
(unsigned long)&prepare_ftrace_return, true);
}
int ftrace_disable_ftrace_graph_caller(void)
{
- unsigned int call[2];
int ret;
- make_call(&ftrace_graph_call, &prepare_ftrace_return, call);
-
- /*
- * This is to make sure that ftrace_enable_ftrace_graph_caller
- * did the right thing.
- */
- ret = ftrace_check_current_call((unsigned long)&ftrace_graph_call,
- call);
-
+ ret = __ftrace_modify_call((unsigned long)&ftrace_graph_call,
+ (unsigned long)&prepare_ftrace_return, false);
if (ret)
return ret;
- return __ftrace_modify_call((unsigned long)&ftrace_graph_call,
+ return __ftrace_modify_call((unsigned long)&ftrace_graph_regs_call,
(unsigned long)&prepare_ftrace_return, false);
}
#endif /* CONFIG_DYNAMIC_FTRACE */
diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index 16e9941900c4..f5a9bad86e58 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -260,7 +260,11 @@ clear_bss_done:
/* Initialize page tables and relocate to virtual addresses */
la sp, init_thread_union + THREAD_SIZE
+#ifdef CONFIG_BUILTIN_DTB
+ la a0, __dtb_start
+#else
mv a0, s1
+#endif /* CONFIG_BUILTIN_DTB */
call setup_vm
#ifdef CONFIG_MMU
la a0, early_pg_dir
diff --git a/arch/riscv/kernel/image-vars.h b/arch/riscv/kernel/image-vars.h
index 8c212efb37a6..71a76a623257 100644
--- a/arch/riscv/kernel/image-vars.h
+++ b/arch/riscv/kernel/image-vars.h
@@ -3,7 +3,7 @@
* Copyright (C) 2020 Western Digital Corporation or its affiliates.
* Linker script variables to be set after section resolution, as
* ld.lld does not like variables assigned before SECTIONS is processed.
- * Based on arch/arm64/kerne/image-vars.h
+ * Based on arch/arm64/kernel/image-vars.h
*/
#ifndef __RISCV_KERNEL_IMAGE_VARS_H
#define __RISCV_KERNEL_IMAGE_VARS_H
diff --git a/arch/riscv/kernel/mcount-dyn.S b/arch/riscv/kernel/mcount-dyn.S
index 35a6ed76cb8b..d171eca623b6 100644
--- a/arch/riscv/kernel/mcount-dyn.S
+++ b/arch/riscv/kernel/mcount-dyn.S
@@ -13,224 +13,186 @@
.text
- .macro SAVE_ABI_STATE
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- addi sp, sp, -48
- sd s0, 32(sp)
- sd ra, 40(sp)
- addi s0, sp, 48
- sd t0, 24(sp)
- sd t1, 16(sp)
-#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
- sd t2, 8(sp)
-#endif
-#else
- addi sp, sp, -16
- sd s0, 0(sp)
- sd ra, 8(sp)
- addi s0, sp, 16
-#endif
+#define FENTRY_RA_OFFSET 12
+#define ABI_SIZE_ON_STACK 72
+#define ABI_A0 0
+#define ABI_A1 8
+#define ABI_A2 16
+#define ABI_A3 24
+#define ABI_A4 32
+#define ABI_A5 40
+#define ABI_A6 48
+#define ABI_A7 56
+#define ABI_RA 64
+
+ .macro SAVE_ABI
+ addi sp, sp, -SZREG
+ addi sp, sp, -ABI_SIZE_ON_STACK
+
+ REG_S a0, ABI_A0(sp)
+ REG_S a1, ABI_A1(sp)
+ REG_S a2, ABI_A2(sp)
+ REG_S a3, ABI_A3(sp)
+ REG_S a4, ABI_A4(sp)
+ REG_S a5, ABI_A5(sp)
+ REG_S a6, ABI_A6(sp)
+ REG_S a7, ABI_A7(sp)
+ REG_S ra, ABI_RA(sp)
.endm
- .macro RESTORE_ABI_STATE
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- ld s0, 32(sp)
- ld ra, 40(sp)
- addi sp, sp, 48
-#else
- ld ra, 8(sp)
- ld s0, 0(sp)
- addi sp, sp, 16
-#endif
+ .macro RESTORE_ABI
+ REG_L a0, ABI_A0(sp)
+ REG_L a1, ABI_A1(sp)
+ REG_L a2, ABI_A2(sp)
+ REG_L a3, ABI_A3(sp)
+ REG_L a4, ABI_A4(sp)
+ REG_L a5, ABI_A5(sp)
+ REG_L a6, ABI_A6(sp)
+ REG_L a7, ABI_A7(sp)
+ REG_L ra, ABI_RA(sp)
+
+ addi sp, sp, ABI_SIZE_ON_STACK
+ addi sp, sp, SZREG
.endm
- .macro RESTORE_GRAPH_ARGS
- ld a0, 24(sp)
- ld a1, 16(sp)
-#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
- ld a2, 8(sp)
-#endif
+#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
+ .macro SAVE_ALL
+ addi sp, sp, -SZREG
+ addi sp, sp, -PT_SIZE_ON_STACK
+
+ REG_S x1, PT_EPC(sp)
+ addi sp, sp, PT_SIZE_ON_STACK
+ REG_L x1, (sp)
+ addi sp, sp, -PT_SIZE_ON_STACK
+ REG_S x1, PT_RA(sp)
+ REG_L x1, PT_EPC(sp)
+
+ REG_S x2, PT_SP(sp)
+ REG_S x3, PT_GP(sp)
+ REG_S x4, PT_TP(sp)
+ REG_S x5, PT_T0(sp)
+ REG_S x6, PT_T1(sp)
+ REG_S x7, PT_T2(sp)
+ REG_S x8, PT_S0(sp)
+ REG_S x9, PT_S1(sp)
+ REG_S x10, PT_A0(sp)
+ REG_S x11, PT_A1(sp)
+ REG_S x12, PT_A2(sp)
+ REG_S x13, PT_A3(sp)
+ REG_S x14, PT_A4(sp)
+ REG_S x15, PT_A5(sp)
+ REG_S x16, PT_A6(sp)
+ REG_S x17, PT_A7(sp)
+ REG_S x18, PT_S2(sp)
+ REG_S x19, PT_S3(sp)
+ REG_S x20, PT_S4(sp)
+ REG_S x21, PT_S5(sp)
+ REG_S x22, PT_S6(sp)
+ REG_S x23, PT_S7(sp)
+ REG_S x24, PT_S8(sp)
+ REG_S x25, PT_S9(sp)
+ REG_S x26, PT_S10(sp)
+ REG_S x27, PT_S11(sp)
+ REG_S x28, PT_T3(sp)
+ REG_S x29, PT_T4(sp)
+ REG_S x30, PT_T5(sp)
+ REG_S x31, PT_T6(sp)
.endm
-ENTRY(ftrace_graph_caller)
- addi sp, sp, -16
- sd s0, 0(sp)
- sd ra, 8(sp)
- addi s0, sp, 16
-ftrace_graph_call:
- .global ftrace_graph_call
- /*
- * Calling ftrace_enable/disable_ftrace_graph_caller would overwrite the
- * call below. Check ftrace_modify_all_code for details.
- */
- call ftrace_stub
- ld ra, 8(sp)
- ld s0, 0(sp)
- addi sp, sp, 16
- ret
-ENDPROC(ftrace_graph_caller)
+ .macro RESTORE_ALL
+ REG_L x1, PT_RA(sp)
+ addi sp, sp, PT_SIZE_ON_STACK
+ REG_S x1, (sp)
+ addi sp, sp, -PT_SIZE_ON_STACK
+ REG_L x1, PT_EPC(sp)
+ REG_L x2, PT_SP(sp)
+ REG_L x3, PT_GP(sp)
+ REG_L x4, PT_TP(sp)
+ REG_L x5, PT_T0(sp)
+ REG_L x6, PT_T1(sp)
+ REG_L x7, PT_T2(sp)
+ REG_L x8, PT_S0(sp)
+ REG_L x9, PT_S1(sp)
+ REG_L x10, PT_A0(sp)
+ REG_L x11, PT_A1(sp)
+ REG_L x12, PT_A2(sp)
+ REG_L x13, PT_A3(sp)
+ REG_L x14, PT_A4(sp)
+ REG_L x15, PT_A5(sp)
+ REG_L x16, PT_A6(sp)
+ REG_L x17, PT_A7(sp)
+ REG_L x18, PT_S2(sp)
+ REG_L x19, PT_S3(sp)
+ REG_L x20, PT_S4(sp)
+ REG_L x21, PT_S5(sp)
+ REG_L x22, PT_S6(sp)
+ REG_L x23, PT_S7(sp)
+ REG_L x24, PT_S8(sp)
+ REG_L x25, PT_S9(sp)
+ REG_L x26, PT_S10(sp)
+ REG_L x27, PT_S11(sp)
+ REG_L x28, PT_T3(sp)
+ REG_L x29, PT_T4(sp)
+ REG_L x30, PT_T5(sp)
+ REG_L x31, PT_T6(sp)
+
+ addi sp, sp, PT_SIZE_ON_STACK
+ addi sp, sp, SZREG
+ .endm
+#endif /* CONFIG_DYNAMIC_FTRACE_WITH_REGS */
ENTRY(ftrace_caller)
- /*
- * a0: the address in the caller when calling ftrace_caller
- * a1: the caller's return address
- * a2: the address of global variable function_trace_op
- */
- ld a1, -8(s0)
- addi a0, ra, -MCOUNT_INSN_SIZE
- la t5, function_trace_op
- ld a2, 0(t5)
+ SAVE_ABI
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- /*
- * the graph tracer (specifically, prepare_ftrace_return) needs these
- * arguments but for now the function tracer occupies the regs, so we
- * save them in temporary regs to recover later.
- */
- addi t0, s0, -8
- mv t1, a0
-#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
- ld t2, -16(s0)
-#endif
-#endif
+ addi a0, ra, -FENTRY_RA_OFFSET
+ la a1, function_trace_op
+ REG_L a2, 0(a1)
+ REG_L a1, ABI_SIZE_ON_STACK(sp)
+ mv a3, sp
- SAVE_ABI_STATE
ftrace_call:
.global ftrace_call
- /*
- * For the dynamic ftrace to work, here we should reserve at least
- * 8 bytes for a functional auipc-jalr pair. The following call
- * serves this purpose.
- *
- * Calling ftrace_update_ftrace_func would overwrite the nops below.
- * Check ftrace_modify_all_code for details.
- */
call ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- RESTORE_GRAPH_ARGS
- call ftrace_graph_caller
+ addi a0, sp, ABI_SIZE_ON_STACK
+ REG_L a1, ABI_RA(sp)
+ addi a1, a1, -FENTRY_RA_OFFSET
+#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
+ mv a2, s0
#endif
-
- RESTORE_ABI_STATE
+ftrace_graph_call:
+ .global ftrace_graph_call
+ call ftrace_stub
+#endif
+ RESTORE_ABI
ret
ENDPROC(ftrace_caller)
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
- .macro SAVE_ALL
- addi sp, sp, -(PT_SIZE_ON_STACK+16)
- sd s0, (PT_SIZE_ON_STACK)(sp)
- sd ra, (PT_SIZE_ON_STACK+8)(sp)
- addi s0, sp, (PT_SIZE_ON_STACK+16)
-
- sd x1, PT_RA(sp)
- sd x2, PT_SP(sp)
- sd x3, PT_GP(sp)
- sd x4, PT_TP(sp)
- sd x5, PT_T0(sp)
- sd x6, PT_T1(sp)
- sd x7, PT_T2(sp)
- sd x8, PT_S0(sp)
- sd x9, PT_S1(sp)
- sd x10, PT_A0(sp)
- sd x11, PT_A1(sp)
- sd x12, PT_A2(sp)
- sd x13, PT_A3(sp)
- sd x14, PT_A4(sp)
- sd x15, PT_A5(sp)
- sd x16, PT_A6(sp)
- sd x17, PT_A7(sp)
- sd x18, PT_S2(sp)
- sd x19, PT_S3(sp)
- sd x20, PT_S4(sp)
- sd x21, PT_S5(sp)
- sd x22, PT_S6(sp)
- sd x23, PT_S7(sp)
- sd x24, PT_S8(sp)
- sd x25, PT_S9(sp)
- sd x26, PT_S10(sp)
- sd x27, PT_S11(sp)
- sd x28, PT_T3(sp)
- sd x29, PT_T4(sp)
- sd x30, PT_T5(sp)
- sd x31, PT_T6(sp)
- .endm
-
- .macro RESTORE_ALL
- ld x1, PT_RA(sp)
- ld x2, PT_SP(sp)
- ld x3, PT_GP(sp)
- ld x4, PT_TP(sp)
- ld x5, PT_T0(sp)
- ld x6, PT_T1(sp)
- ld x7, PT_T2(sp)
- ld x8, PT_S0(sp)
- ld x9, PT_S1(sp)
- ld x10, PT_A0(sp)
- ld x11, PT_A1(sp)
- ld x12, PT_A2(sp)
- ld x13, PT_A3(sp)
- ld x14, PT_A4(sp)
- ld x15, PT_A5(sp)
- ld x16, PT_A6(sp)
- ld x17, PT_A7(sp)
- ld x18, PT_S2(sp)
- ld x19, PT_S3(sp)
- ld x20, PT_S4(sp)
- ld x21, PT_S5(sp)
- ld x22, PT_S6(sp)
- ld x23, PT_S7(sp)
- ld x24, PT_S8(sp)
- ld x25, PT_S9(sp)
- ld x26, PT_S10(sp)
- ld x27, PT_S11(sp)
- ld x28, PT_T3(sp)
- ld x29, PT_T4(sp)
- ld x30, PT_T5(sp)
- ld x31, PT_T6(sp)
-
- ld s0, (PT_SIZE_ON_STACK)(sp)
- ld ra, (PT_SIZE_ON_STACK+8)(sp)
- addi sp, sp, (PT_SIZE_ON_STACK+16)
- .endm
-
- .macro RESTORE_GRAPH_REG_ARGS
- ld a0, PT_T0(sp)
- ld a1, PT_T1(sp)
-#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
- ld a2, PT_T2(sp)
-#endif
- .endm
-
-/*
- * Most of the contents are the same as ftrace_caller.
- */
ENTRY(ftrace_regs_caller)
- /*
- * a3: the address of all registers in the stack
- */
- ld a1, -8(s0)
- addi a0, ra, -MCOUNT_INSN_SIZE
- la t5, function_trace_op
- ld a2, 0(t5)
- addi a3, sp, -(PT_SIZE_ON_STACK+16)
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- addi t0, s0, -8
- mv t1, a0
-#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
- ld t2, -16(s0)
-#endif
-#endif
SAVE_ALL
+ addi a0, ra, -FENTRY_RA_OFFSET
+ la a1, function_trace_op
+ REG_L a2, 0(a1)
+ REG_L a1, PT_SIZE_ON_STACK(sp)
+ mv a3, sp
+
ftrace_regs_call:
.global ftrace_regs_call
call ftrace_stub
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- RESTORE_GRAPH_REG_ARGS
- call ftrace_graph_caller
+ addi a0, sp, PT_RA
+ REG_L a1, PT_EPC(sp)
+ addi a1, a1, -FENTRY_RA_OFFSET
+#ifdef HAVE_FUNCTION_GRAPH_FP_TEST
+ mv a2, s0
+#endif
+ftrace_graph_regs_call:
+ .global ftrace_graph_regs_call
+ call ftrace_stub
#endif
RESTORE_ALL
diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c
index 3fe7a5296aa5..0b552873a577 100644
--- a/arch/riscv/kernel/patch.c
+++ b/arch/riscv/kernel/patch.c
@@ -20,7 +20,12 @@ struct patch_insn {
};
#ifdef CONFIG_MMU
-static void *patch_map(void *addr, int fixmap)
+/*
+ * The fix_to_virt(, idx) needs a const value (not a dynamic variable of
+ * reg-a0) or BUILD_BUG_ON failed with "idx >= __end_of_fixed_addresses".
+ * So use '__always_inline' and 'const unsigned int fixmap' here.
+ */
+static __always_inline void *patch_map(void *addr, const unsigned int fixmap)
{
uintptr_t uintaddr = (uintptr_t) addr;
struct page *page;
@@ -37,7 +42,6 @@ static void *patch_map(void *addr, int fixmap)
return (void *)set_fixmap_offset(fixmap, page_to_phys(page) +
(uintaddr & ~PAGE_MASK));
}
-NOKPROBE_SYMBOL(patch_map);
static void patch_unmap(int fixmap)
{
diff --git a/arch/riscv/kernel/probes/Makefile b/arch/riscv/kernel/probes/Makefile
new file mode 100644
index 000000000000..7f0840dcc31b
--- /dev/null
+++ b/arch/riscv/kernel/probes/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_KPROBES) += kprobes.o decode-insn.o simulate-insn.o
+obj-$(CONFIG_KPROBES) += kprobes_trampoline.o
+obj-$(CONFIG_KPROBES_ON_FTRACE) += ftrace.o
+obj-$(CONFIG_UPROBES) += uprobes.o decode-insn.o simulate-insn.o
+CFLAGS_REMOVE_simulate-insn.o = $(CC_FLAGS_FTRACE)
diff --git a/arch/riscv/kernel/probes/decode-insn.c b/arch/riscv/kernel/probes/decode-insn.c
new file mode 100644
index 000000000000..0ed043acc882
--- /dev/null
+++ b/arch/riscv/kernel/probes/decode-insn.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/kernel.h>
+#include <linux/kprobes.h>
+#include <linux/module.h>
+#include <linux/kallsyms.h>
+#include <asm/sections.h>
+
+#include "decode-insn.h"
+#include "simulate-insn.h"
+
+/* Return:
+ * INSN_REJECTED If instruction is one not allowed to kprobe,
+ * INSN_GOOD_NO_SLOT If instruction is supported but doesn't use its slot.
+ */
+enum probe_insn __kprobes
+riscv_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *api)
+{
+ probe_opcode_t insn = *addr;
+
+ /*
+ * Reject instructions list:
+ */
+ RISCV_INSN_REJECTED(system, insn);
+ RISCV_INSN_REJECTED(fence, insn);
+
+ /*
+ * Simulate instructions list:
+ * TODO: the REJECTED ones below need to be implemented
+ */
+#ifdef CONFIG_RISCV_ISA_C
+ RISCV_INSN_REJECTED(c_j, insn);
+ RISCV_INSN_REJECTED(c_jr, insn);
+ RISCV_INSN_REJECTED(c_jal, insn);
+ RISCV_INSN_REJECTED(c_jalr, insn);
+ RISCV_INSN_REJECTED(c_beqz, insn);
+ RISCV_INSN_REJECTED(c_bnez, insn);
+ RISCV_INSN_REJECTED(c_ebreak, insn);
+#endif
+
+ RISCV_INSN_REJECTED(auipc, insn);
+ RISCV_INSN_REJECTED(branch, insn);
+
+ RISCV_INSN_SET_SIMULATE(jal, insn);
+ RISCV_INSN_SET_SIMULATE(jalr, insn);
+
+ return INSN_GOOD;
+}
diff --git a/arch/riscv/kernel/probes/decode-insn.h b/arch/riscv/kernel/probes/decode-insn.h
new file mode 100644
index 000000000000..42269a7d676d
--- /dev/null
+++ b/arch/riscv/kernel/probes/decode-insn.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _RISCV_KERNEL_KPROBES_DECODE_INSN_H
+#define _RISCV_KERNEL_KPROBES_DECODE_INSN_H
+
+#include <asm/sections.h>
+#include <asm/kprobes.h>
+
+enum probe_insn {
+ INSN_REJECTED,
+ INSN_GOOD_NO_SLOT,
+ INSN_GOOD,
+};
+
+enum probe_insn __kprobes
+riscv_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *asi);
+
+#endif /* _RISCV_KERNEL_KPROBES_DECODE_INSN_H */
diff --git a/arch/riscv/kernel/probes/ftrace.c b/arch/riscv/kernel/probes/ftrace.c
new file mode 100644
index 000000000000..e6372490aa0b
--- /dev/null
+++ b/arch/riscv/kernel/probes/ftrace.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/kprobes.h>
+
+/* Ftrace callback handler for kprobes -- called under preepmt disabed */
+void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
+ struct ftrace_ops *ops, struct ftrace_regs *regs)
+{
+ struct kprobe *p;
+ struct kprobe_ctlblk *kcb;
+
+ p = get_kprobe((kprobe_opcode_t *)ip);
+ if (unlikely(!p) || kprobe_disabled(p))
+ return;
+
+ kcb = get_kprobe_ctlblk();
+ if (kprobe_running()) {
+ kprobes_inc_nmissed_count(p);
+ } else {
+ unsigned long orig_ip = instruction_pointer(&(regs->regs));
+
+ instruction_pointer_set(&(regs->regs), ip);
+
+ __this_cpu_write(current_kprobe, p);
+ kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+ if (!p->pre_handler || !p->pre_handler(p, &(regs->regs))) {
+ /*
+ * Emulate singlestep (and also recover regs->pc)
+ * as if there is a nop
+ */
+ instruction_pointer_set(&(regs->regs),
+ (unsigned long)p->addr + MCOUNT_INSN_SIZE);
+ if (unlikely(p->post_handler)) {
+ kcb->kprobe_status = KPROBE_HIT_SSDONE;
+ p->post_handler(p, &(regs->regs), 0);
+ }
+ instruction_pointer_set(&(regs->regs), orig_ip);
+ }
+
+ /*
+ * If pre_handler returns !0, it changes regs->pc. We have to
+ * skip emulating post_handler.
+ */
+ __this_cpu_write(current_kprobe, NULL);
+ }
+}
+NOKPROBE_SYMBOL(kprobe_ftrace_handler);
+
+int arch_prepare_kprobe_ftrace(struct kprobe *p)
+{
+ p->ainsn.api.insn = NULL;
+ return 0;
+}
diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/kprobes.c
new file mode 100644
index 000000000000..a2ec18662fee
--- /dev/null
+++ b/arch/riscv/kernel/probes/kprobes.c
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/kprobes.h>
+#include <linux/extable.h>
+#include <linux/slab.h>
+#include <linux/stop_machine.h>
+#include <asm/ptrace.h>
+#include <linux/uaccess.h>
+#include <asm/sections.h>
+#include <asm/cacheflush.h>
+#include <asm/bug.h>
+#include <asm/patch.h>
+
+#include "decode-insn.h"
+
+DEFINE_PER_CPU(struct kprobe *, current_kprobe) = NULL;
+DEFINE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+static void __kprobes
+post_kprobe_handler(struct kprobe_ctlblk *, struct pt_regs *);
+
+static void __kprobes arch_prepare_ss_slot(struct kprobe *p)
+{
+ unsigned long offset = GET_INSN_LENGTH(p->opcode);
+
+ p->ainsn.api.restore = (unsigned long)p->addr + offset;
+
+ patch_text(p->ainsn.api.insn, p->opcode);
+ patch_text((void *)((unsigned long)(p->ainsn.api.insn) + offset),
+ __BUG_INSN_32);
+}
+
+static void __kprobes arch_prepare_simulate(struct kprobe *p)
+{
+ p->ainsn.api.restore = 0;
+}
+
+static void __kprobes arch_simulate_insn(struct kprobe *p, struct pt_regs *regs)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ if (p->ainsn.api.handler)
+ p->ainsn.api.handler((u32)p->opcode,
+ (unsigned long)p->addr, regs);
+
+ post_kprobe_handler(kcb, regs);
+}
+
+int __kprobes arch_prepare_kprobe(struct kprobe *p)
+{
+ unsigned long probe_addr = (unsigned long)p->addr;
+
+ if (probe_addr & 0x1) {
+ pr_warn("Address not aligned.\n");
+
+ return -EINVAL;
+ }
+
+ /* copy instruction */
+ p->opcode = *p->addr;
+
+ /* decode instruction */
+ switch (riscv_probe_decode_insn(p->addr, &p->ainsn.api)) {
+ case INSN_REJECTED: /* insn not supported */
+ return -EINVAL;
+
+ case INSN_GOOD_NO_SLOT: /* insn need simulation */
+ p->ainsn.api.insn = NULL;
+ break;
+
+ case INSN_GOOD: /* instruction uses slot */
+ p->ainsn.api.insn = get_insn_slot();
+ if (!p->ainsn.api.insn)
+ return -ENOMEM;
+ break;
+ }
+
+ /* prepare the instruction */
+ if (p->ainsn.api.insn)
+ arch_prepare_ss_slot(p);
+ else
+ arch_prepare_simulate(p);
+
+ return 0;
+}
+
+/* install breakpoint in text */
+void __kprobes arch_arm_kprobe(struct kprobe *p)
+{
+ if ((p->opcode & __INSN_LENGTH_MASK) == __INSN_LENGTH_32)
+ patch_text(p->addr, __BUG_INSN_32);
+ else
+ patch_text(p->addr, __BUG_INSN_16);
+}
+
+/* remove breakpoint from text */
+void __kprobes arch_disarm_kprobe(struct kprobe *p)
+{
+ patch_text(p->addr, p->opcode);
+}
+
+void __kprobes arch_remove_kprobe(struct kprobe *p)
+{
+}
+
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+ kcb->prev_kprobe.kp = kprobe_running();
+ kcb->prev_kprobe.status = kcb->kprobe_status;
+}
+
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+{
+ __this_cpu_write(current_kprobe, kcb->prev_kprobe.kp);
+ kcb->kprobe_status = kcb->prev_kprobe.status;
+}
+
+static void __kprobes set_current_kprobe(struct kprobe *p)
+{
+ __this_cpu_write(current_kprobe, p);
+}
+
+/*
+ * Interrupts need to be disabled before single-step mode is set, and not
+ * reenabled until after single-step mode ends.
+ * Without disabling interrupt on local CPU, there is a chance of
+ * interrupt occurrence in the period of exception return and start of
+ * out-of-line single-step, that result in wrongly single stepping
+ * into the interrupt handler.
+ */
+static void __kprobes kprobes_save_local_irqflag(struct kprobe_ctlblk *kcb,
+ struct pt_regs *regs)
+{
+ kcb->saved_status = regs->status;
+ regs->status &= ~SR_SPIE;
+}
+
+static void __kprobes kprobes_restore_local_irqflag(struct kprobe_ctlblk *kcb,
+ struct pt_regs *regs)
+{
+ regs->status = kcb->saved_status;
+}
+
+static void __kprobes
+set_ss_context(struct kprobe_ctlblk *kcb, unsigned long addr, struct kprobe *p)
+{
+ unsigned long offset = GET_INSN_LENGTH(p->opcode);
+
+ kcb->ss_ctx.ss_pending = true;
+ kcb->ss_ctx.match_addr = addr + offset;
+}
+
+static void __kprobes clear_ss_context(struct kprobe_ctlblk *kcb)
+{
+ kcb->ss_ctx.ss_pending = false;
+ kcb->ss_ctx.match_addr = 0;
+}
+
+static void __kprobes setup_singlestep(struct kprobe *p,
+ struct pt_regs *regs,
+ struct kprobe_ctlblk *kcb, int reenter)
+{
+ unsigned long slot;
+
+ if (reenter) {
+ save_previous_kprobe(kcb);
+ set_current_kprobe(p);
+ kcb->kprobe_status = KPROBE_REENTER;
+ } else {
+ kcb->kprobe_status = KPROBE_HIT_SS;
+ }
+
+ if (p->ainsn.api.insn) {
+ /* prepare for single stepping */
+ slot = (unsigned long)p->ainsn.api.insn;
+
+ set_ss_context(kcb, slot, p); /* mark pending ss */
+
+ /* IRQs and single stepping do not mix well. */
+ kprobes_save_local_irqflag(kcb, regs);
+
+ instruction_pointer_set(regs, slot);
+ } else {
+ /* insn simulation */
+ arch_simulate_insn(p, regs);
+ }
+}
+
+static int __kprobes reenter_kprobe(struct kprobe *p,
+ struct pt_regs *regs,
+ struct kprobe_ctlblk *kcb)
+{
+ switch (kcb->kprobe_status) {
+ case KPROBE_HIT_SSDONE:
+ case KPROBE_HIT_ACTIVE:
+ kprobes_inc_nmissed_count(p);
+ setup_singlestep(p, regs, kcb, 1);
+ break;
+ case KPROBE_HIT_SS:
+ case KPROBE_REENTER:
+ pr_warn("Unrecoverable kprobe detected.\n");
+ dump_kprobe(p);
+ BUG();
+ break;
+ default:
+ WARN_ON(1);
+ return 0;
+ }
+
+ return 1;
+}
+
+static void __kprobes
+post_kprobe_handler(struct kprobe_ctlblk *kcb, struct pt_regs *regs)
+{
+ struct kprobe *cur = kprobe_running();
+
+ if (!cur)
+ return;
+
+ /* return addr restore if non-branching insn */
+ if (cur->ainsn.api.restore != 0)
+ regs->epc = cur->ainsn.api.restore;
+
+ /* restore back original saved kprobe variables and continue */
+ if (kcb->kprobe_status == KPROBE_REENTER) {
+ restore_previous_kprobe(kcb);
+ return;
+ }
+
+ /* call post handler */
+ kcb->kprobe_status = KPROBE_HIT_SSDONE;
+ if (cur->post_handler) {
+ /* post_handler can hit breakpoint and single step
+ * again, so we enable D-flag for recursive exception.
+ */
+ cur->post_handler(cur, regs, 0);
+ }
+
+ reset_current_kprobe();
+}
+
+int __kprobes kprobe_fault_handler(struct pt_regs *regs, unsigned int trapnr)
+{
+ struct kprobe *cur = kprobe_running();
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ switch (kcb->kprobe_status) {
+ case KPROBE_HIT_SS:
+ case KPROBE_REENTER:
+ /*
+ * We are here because the instruction being single
+ * stepped caused a page fault. We reset the current
+ * kprobe and the ip points back to the probe address
+ * and allow the page fault handler to continue as a
+ * normal page fault.
+ */
+ regs->epc = (unsigned long) cur->addr;
+ if (!instruction_pointer(regs))
+ BUG();
+
+ if (kcb->kprobe_status == KPROBE_REENTER)
+ restore_previous_kprobe(kcb);
+ else
+ reset_current_kprobe();
+
+ break;
+ case KPROBE_HIT_ACTIVE:
+ case KPROBE_HIT_SSDONE:
+ /*
+ * We increment the nmissed count for accounting,
+ * we can also use npre/npostfault count for accounting
+ * these specific fault cases.
+ */
+ kprobes_inc_nmissed_count(cur);
+
+ /*
+ * We come here because instructions in the pre/post
+ * handler caused the page_fault, this could happen
+ * if handler tries to access user space by
+ * copy_from_user(), get_user() etc. Let the
+ * user-specified handler try to fix it first.
+ */
+ if (cur->fault_handler && cur->fault_handler(cur, regs, trapnr))
+ return 1;
+
+ /*
+ * In case the user-specified fault handler returned
+ * zero, try to fix up.
+ */
+ if (fixup_exception(regs))
+ return 1;
+ }
+ return 0;
+}
+
+bool __kprobes
+kprobe_breakpoint_handler(struct pt_regs *regs)
+{
+ struct kprobe *p, *cur_kprobe;
+ struct kprobe_ctlblk *kcb;
+ unsigned long addr = instruction_pointer(regs);
+
+ kcb = get_kprobe_ctlblk();
+ cur_kprobe = kprobe_running();
+
+ p = get_kprobe((kprobe_opcode_t *) addr);
+
+ if (p) {
+ if (cur_kprobe) {
+ if (reenter_kprobe(p, regs, kcb))
+ return true;
+ } else {
+ /* Probe hit */
+ set_current_kprobe(p);
+ kcb->kprobe_status = KPROBE_HIT_ACTIVE;
+
+ /*
+ * If we have no pre-handler or it returned 0, we
+ * continue with normal processing. If we have a
+ * pre-handler and it returned non-zero, it will
+ * modify the execution path and no need to single
+ * stepping. Let's just reset current kprobe and exit.
+ *
+ * pre_handler can hit a breakpoint and can step thru
+ * before return.
+ */
+ if (!p->pre_handler || !p->pre_handler(p, regs))
+ setup_singlestep(p, regs, kcb, 0);
+ else
+ reset_current_kprobe();
+ }
+ return true;
+ }
+
+ /*
+ * The breakpoint instruction was removed right
+ * after we hit it. Another cpu has removed
+ * either a probepoint or a debugger breakpoint
+ * at this address. In either case, no further
+ * handling of this interrupt is appropriate.
+ * Return back to original instruction, and continue.
+ */
+ return false;
+}
+
+bool __kprobes
+kprobe_single_step_handler(struct pt_regs *regs)
+{
+ struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
+
+ if ((kcb->ss_ctx.ss_pending)
+ && (kcb->ss_ctx.match_addr == instruction_pointer(regs))) {
+ clear_ss_context(kcb); /* clear pending ss */
+
+ kprobes_restore_local_irqflag(kcb, regs);
+
+ post_kprobe_handler(kcb, regs);
+ return true;
+ }
+ return false;
+}
+
+/*
+ * Provide a blacklist of symbols identifying ranges which cannot be kprobed.
+ * This blacklist is exposed to userspace via debugfs (kprobes/blacklist).
+ */
+int __init arch_populate_kprobe_blacklist(void)
+{
+ int ret;
+
+ ret = kprobe_add_area_blacklist((unsigned long)__irqentry_text_start,
+ (unsigned long)__irqentry_text_end);
+ return ret;
+}
+
+void __kprobes __used *trampoline_probe_handler(struct pt_regs *regs)
+{
+ return (void *)kretprobe_trampoline_handler(regs, &kretprobe_trampoline, NULL);
+}
+
+void __kprobes arch_prepare_kretprobe(struct kretprobe_instance *ri,
+ struct pt_regs *regs)
+{
+ ri->ret_addr = (kprobe_opcode_t *)regs->ra;
+ ri->fp = NULL;
+ regs->ra = (unsigned long) &kretprobe_trampoline;
+}
+
+int __kprobes arch_trampoline_kprobe(struct kprobe *p)
+{
+ return 0;
+}
+
+int __init arch_init_kprobes(void)
+{
+ return 0;
+}
diff --git a/arch/riscv/kernel/probes/kprobes_trampoline.S b/arch/riscv/kernel/probes/kprobes_trampoline.S
new file mode 100644
index 000000000000..6e85d021e2a2
--- /dev/null
+++ b/arch/riscv/kernel/probes/kprobes_trampoline.S
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Author: Patrick Stählin <me@packi.ch>
+ */
+#include <linux/linkage.h>
+
+#include <asm/asm.h>
+#include <asm/asm-offsets.h>
+
+ .text
+ .altmacro
+
+ .macro save_all_base_regs
+ REG_S x1, PT_RA(sp)
+ REG_S x3, PT_GP(sp)
+ REG_S x4, PT_TP(sp)
+ REG_S x5, PT_T0(sp)
+ REG_S x6, PT_T1(sp)
+ REG_S x7, PT_T2(sp)
+ REG_S x8, PT_S0(sp)
+ REG_S x9, PT_S1(sp)
+ REG_S x10, PT_A0(sp)
+ REG_S x11, PT_A1(sp)
+ REG_S x12, PT_A2(sp)
+ REG_S x13, PT_A3(sp)
+ REG_S x14, PT_A4(sp)
+ REG_S x15, PT_A5(sp)
+ REG_S x16, PT_A6(sp)
+ REG_S x17, PT_A7(sp)
+ REG_S x18, PT_S2(sp)
+ REG_S x19, PT_S3(sp)
+ REG_S x20, PT_S4(sp)
+ REG_S x21, PT_S5(sp)
+ REG_S x22, PT_S6(sp)
+ REG_S x23, PT_S7(sp)
+ REG_S x24, PT_S8(sp)
+ REG_S x25, PT_S9(sp)
+ REG_S x26, PT_S10(sp)
+ REG_S x27, PT_S11(sp)
+ REG_S x28, PT_T3(sp)
+ REG_S x29, PT_T4(sp)
+ REG_S x30, PT_T5(sp)
+ REG_S x31, PT_T6(sp)
+ .endm
+
+ .macro restore_all_base_regs
+ REG_L x3, PT_GP(sp)
+ REG_L x4, PT_TP(sp)
+ REG_L x5, PT_T0(sp)
+ REG_L x6, PT_T1(sp)
+ REG_L x7, PT_T2(sp)
+ REG_L x8, PT_S0(sp)
+ REG_L x9, PT_S1(sp)
+ REG_L x10, PT_A0(sp)
+ REG_L x11, PT_A1(sp)
+ REG_L x12, PT_A2(sp)
+ REG_L x13, PT_A3(sp)
+ REG_L x14, PT_A4(sp)
+ REG_L x15, PT_A5(sp)
+ REG_L x16, PT_A6(sp)
+ REG_L x17, PT_A7(sp)
+ REG_L x18, PT_S2(sp)
+ REG_L x19, PT_S3(sp)
+ REG_L x20, PT_S4(sp)
+ REG_L x21, PT_S5(sp)
+ REG_L x22, PT_S6(sp)
+ REG_L x23, PT_S7(sp)
+ REG_L x24, PT_S8(sp)
+ REG_L x25, PT_S9(sp)
+ REG_L x26, PT_S10(sp)
+ REG_L x27, PT_S11(sp)
+ REG_L x28, PT_T3(sp)
+ REG_L x29, PT_T4(sp)
+ REG_L x30, PT_T5(sp)
+ REG_L x31, PT_T6(sp)
+ .endm
+
+ENTRY(kretprobe_trampoline)
+ addi sp, sp, -(PT_SIZE_ON_STACK)
+ save_all_base_regs
+
+ move a0, sp /* pt_regs */
+
+ call trampoline_probe_handler
+
+ /* use the result as the return-address */
+ move ra, a0
+
+ restore_all_base_regs
+ addi sp, sp, PT_SIZE_ON_STACK
+
+ ret
+ENDPROC(kretprobe_trampoline)
diff --git a/arch/riscv/kernel/probes/simulate-insn.c b/arch/riscv/kernel/probes/simulate-insn.c
new file mode 100644
index 000000000000..2519ce26377d
--- /dev/null
+++ b/arch/riscv/kernel/probes/simulate-insn.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/kprobes.h>
+
+#include "decode-insn.h"
+#include "simulate-insn.h"
+
+static inline bool rv_insn_reg_get_val(struct pt_regs *regs, u32 index,
+ unsigned long *ptr)
+{
+ if (index == 0)
+ *ptr = 0;
+ else if (index <= 31)
+ *ptr = *((unsigned long *)regs + index);
+ else
+ return false;
+
+ return true;
+}
+
+static inline bool rv_insn_reg_set_val(struct pt_regs *regs, u32 index,
+ unsigned long val)
+{
+ if (index == 0)
+ return false;
+ else if (index <= 31)
+ *((unsigned long *)regs + index) = val;
+ else
+ return false;
+
+ return true;
+}
+
+bool __kprobes simulate_jal(u32 opcode, unsigned long addr, struct pt_regs *regs)
+{
+ /*
+ * 31 30 21 20 19 12 11 7 6 0
+ * imm [20] | imm[10:1] | imm[11] | imm[19:12] | rd | opcode
+ * 1 10 1 8 5 JAL/J
+ */
+ bool ret;
+ u32 imm;
+ u32 index = (opcode >> 7) & 0x1f;
+
+ ret = rv_insn_reg_set_val(regs, index, addr + 4);
+ if (!ret)
+ return ret;
+
+ imm = ((opcode >> 21) & 0x3ff) << 1;
+ imm |= ((opcode >> 20) & 0x1) << 11;
+ imm |= ((opcode >> 12) & 0xff) << 12;
+ imm |= ((opcode >> 31) & 0x1) << 20;
+
+ instruction_pointer_set(regs, addr + sign_extend32((imm), 20));
+
+ return ret;
+}
+
+bool __kprobes simulate_jalr(u32 opcode, unsigned long addr, struct pt_regs *regs)
+{
+ /*
+ * 31 20 19 15 14 12 11 7 6 0
+ * offset[11:0] | rs1 | 010 | rd | opcode
+ * 12 5 3 5 JALR/JR
+ */
+ bool ret;
+ unsigned long base_addr;
+ u32 imm = (opcode >> 20) & 0xfff;
+ u32 rd_index = (opcode >> 7) & 0x1f;
+ u32 rs1_index = (opcode >> 15) & 0x1f;
+
+ ret = rv_insn_reg_set_val(regs, rd_index, addr + 4);
+ if (!ret)
+ return ret;
+
+ ret = rv_insn_reg_get_val(regs, rs1_index, &base_addr);
+ if (!ret)
+ return ret;
+
+ instruction_pointer_set(regs, (base_addr + sign_extend32((imm), 11))&~1);
+
+ return ret;
+}
diff --git a/arch/riscv/kernel/probes/simulate-insn.h b/arch/riscv/kernel/probes/simulate-insn.h
new file mode 100644
index 000000000000..cb6ff7dccb92
--- /dev/null
+++ b/arch/riscv/kernel/probes/simulate-insn.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _RISCV_KERNEL_PROBES_SIMULATE_INSN_H
+#define _RISCV_KERNEL_PROBES_SIMULATE_INSN_H
+
+#define __RISCV_INSN_FUNCS(name, mask, val) \
+static __always_inline bool riscv_insn_is_##name(probe_opcode_t code) \
+{ \
+ BUILD_BUG_ON(~(mask) & (val)); \
+ return (code & (mask)) == (val); \
+} \
+bool simulate_##name(u32 opcode, unsigned long addr, \
+ struct pt_regs *regs)
+
+#define RISCV_INSN_REJECTED(name, code) \
+ do { \
+ if (riscv_insn_is_##name(code)) { \
+ return INSN_REJECTED; \
+ } \
+ } while (0)
+
+__RISCV_INSN_FUNCS(system, 0x7f, 0x73);
+__RISCV_INSN_FUNCS(fence, 0x7f, 0x0f);
+
+#define RISCV_INSN_SET_SIMULATE(name, code) \
+ do { \
+ if (riscv_insn_is_##name(code)) { \
+ api->handler = simulate_##name; \
+ return INSN_GOOD_NO_SLOT; \
+ } \
+ } while (0)
+
+__RISCV_INSN_FUNCS(c_j, 0xe003, 0xa001);
+__RISCV_INSN_FUNCS(c_jr, 0xf007, 0x8002);
+__RISCV_INSN_FUNCS(c_jal, 0xe003, 0x2001);
+__RISCV_INSN_FUNCS(c_jalr, 0xf007, 0x9002);
+__RISCV_INSN_FUNCS(c_beqz, 0xe003, 0xc001);
+__RISCV_INSN_FUNCS(c_bnez, 0xe003, 0xe001);
+__RISCV_INSN_FUNCS(c_ebreak, 0xffff, 0x9002);
+
+__RISCV_INSN_FUNCS(auipc, 0x7f, 0x17);
+__RISCV_INSN_FUNCS(branch, 0x7f, 0x63);
+
+__RISCV_INSN_FUNCS(jal, 0x7f, 0x6f);
+__RISCV_INSN_FUNCS(jalr, 0x707f, 0x67);
+
+#endif /* _RISCV_KERNEL_PROBES_SIMULATE_INSN_H */
diff --git a/arch/riscv/kernel/probes/uprobes.c b/arch/riscv/kernel/probes/uprobes.c
new file mode 100644
index 000000000000..7a057b5f0adc
--- /dev/null
+++ b/arch/riscv/kernel/probes/uprobes.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/highmem.h>
+#include <linux/ptrace.h>
+#include <linux/uprobes.h>
+
+#include "decode-insn.h"
+
+#define UPROBE_TRAP_NR UINT_MAX
+
+bool is_swbp_insn(uprobe_opcode_t *insn)
+{
+#ifdef CONFIG_RISCV_ISA_C
+ return (*insn & 0xffff) == UPROBE_SWBP_INSN;
+#else
+ return *insn == UPROBE_SWBP_INSN;
+#endif
+}
+
+unsigned long uprobe_get_swbp_addr(struct pt_regs *regs)
+{
+ return instruction_pointer(regs);
+}
+
+int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm,
+ unsigned long addr)
+{
+ probe_opcode_t opcode;
+
+ opcode = *(probe_opcode_t *)(&auprobe->insn[0]);
+
+ auprobe->insn_size = GET_INSN_LENGTH(opcode);
+
+ switch (riscv_probe_decode_insn(&opcode, &auprobe->api)) {
+ case INSN_REJECTED:
+ return -EINVAL;
+
+ case INSN_GOOD_NO_SLOT:
+ auprobe->simulate = true;
+ break;
+
+ case INSN_GOOD:
+ auprobe->simulate = false;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int arch_uprobe_pre_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ struct uprobe_task *utask = current->utask;
+
+ utask->autask.saved_cause = current->thread.bad_cause;
+ current->thread.bad_cause = UPROBE_TRAP_NR;
+
+ instruction_pointer_set(regs, utask->xol_vaddr);
+
+ regs->status &= ~SR_SPIE;
+
+ return 0;
+}
+
+int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ struct uprobe_task *utask = current->utask;
+
+ WARN_ON_ONCE(current->thread.bad_cause != UPROBE_TRAP_NR);
+
+ instruction_pointer_set(regs, utask->vaddr + auprobe->insn_size);
+
+ regs->status |= SR_SPIE;
+
+ return 0;
+}
+
+bool arch_uprobe_xol_was_trapped(struct task_struct *t)
+{
+ if (t->thread.bad_cause != UPROBE_TRAP_NR)
+ return true;
+
+ return false;
+}
+
+bool arch_uprobe_skip_sstep(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ probe_opcode_t insn;
+ unsigned long addr;
+
+ if (!auprobe->simulate)
+ return false;
+
+ insn = *(probe_opcode_t *)(&auprobe->insn[0]);
+ addr = instruction_pointer(regs);
+
+ if (auprobe->api.handler)
+ auprobe->api.handler(insn, addr, regs);
+
+ return true;
+}
+
+void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ struct uprobe_task *utask = current->utask;
+
+ /*
+ * Task has received a fatal signal, so reset back to probbed
+ * address.
+ */
+ instruction_pointer_set(regs, utask->vaddr);
+
+ regs->status &= ~SR_SPIE;
+}
+
+bool arch_uretprobe_is_alive(struct return_instance *ret, enum rp_check ctx,
+ struct pt_regs *regs)
+{
+ if (ctx == RP_CHECK_CHAIN_CALL)
+ return regs->sp <= ret->stack;
+ else
+ return regs->sp < ret->stack;
+}
+
+unsigned long
+arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr,
+ struct pt_regs *regs)
+{
+ unsigned long ra;
+
+ ra = regs->ra;
+
+ regs->ra = trampoline_vaddr;
+
+ return ra;
+}
+
+int arch_uprobe_exception_notify(struct notifier_block *self,
+ unsigned long val, void *data)
+{
+ return NOTIFY_DONE;
+}
+
+bool uprobe_breakpoint_handler(struct pt_regs *regs)
+{
+ if (uprobe_pre_sstep_notifier(regs))
+ return true;
+
+ return false;
+}
+
+bool uprobe_single_step_handler(struct pt_regs *regs)
+{
+ if (uprobe_post_sstep_notifier(regs))
+ return true;
+
+ return false;
+}
+
+void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
+ void *src, unsigned long len)
+{
+ /* Initialize the slot */
+ void *kaddr = kmap_atomic(page);
+ void *dst = kaddr + (vaddr & ~PAGE_MASK);
+
+ memcpy(dst, src, len);
+
+ /* Add ebreak behind opcode to simulate singlestep */
+ if (vaddr) {
+ dst += GET_INSN_LENGTH(*(probe_opcode_t *)src);
+ *(uprobe_opcode_t *)dst = __BUG_INSN_32;
+ }
+
+ kunmap_atomic(kaddr);
+
+ /*
+ * We probably need flush_icache_user_page() but it needs vma.
+ * This should work on most of architectures by default. If
+ * architecture needs to do something different it can define
+ * its own version of the function.
+ */
+ flush_dcache_page(page);
+}
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c
index dd5f985b1f40..19f4688f2f36 100644
--- a/arch/riscv/kernel/process.c
+++ b/arch/riscv/kernel/process.c
@@ -18,13 +18,14 @@
#include <asm/unistd.h>
#include <asm/processor.h>
#include <asm/csr.h>
+#include <asm/stacktrace.h>
#include <asm/string.h>
#include <asm/switch_to.h>
#include <asm/thread_info.h>
register unsigned long gp_in_global __asm__("gp");
-#ifdef CONFIG_STACKPROTECTOR
+#if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_STACKPROTECTOR_PER_TASK)
#include <linux/stackprotector.h>
unsigned long __stack_chk_guard __read_mostly;
EXPORT_SYMBOL(__stack_chk_guard);
@@ -39,11 +40,16 @@ void arch_cpu_idle(void)
raw_local_irq_enable();
}
-void show_regs(struct pt_regs *regs)
+void __show_regs(struct pt_regs *regs)
{
show_regs_print_info(KERN_DEFAULT);
- pr_cont("epc: " REG_FMT " ra : " REG_FMT " sp : " REG_FMT "\n",
+ if (!user_mode(regs)) {
+ pr_cont("epc : %pS\n", (void *)regs->epc);
+ pr_cont(" ra : %pS\n", (void *)regs->ra);
+ }
+
+ pr_cont("epc : " REG_FMT " ra : " REG_FMT " sp : " REG_FMT "\n",
regs->epc, regs->ra, regs->sp);
pr_cont(" gp : " REG_FMT " tp : " REG_FMT " t0 : " REG_FMT "\n",
regs->gp, regs->tp, regs->t0);
@@ -69,6 +75,12 @@ void show_regs(struct pt_regs *regs)
pr_cont("status: " REG_FMT " badaddr: " REG_FMT " cause: " REG_FMT "\n",
regs->status, regs->badaddr, regs->cause);
}
+void show_regs(struct pt_regs *regs)
+{
+ __show_regs(regs);
+ if (!user_mode(regs))
+ dump_backtrace(regs, NULL, KERN_DEFAULT);
+}
void start_thread(struct pt_regs *regs, unsigned long pc,
unsigned long sp)
diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c
index 2d6395f5ad54..1a85305720e8 100644
--- a/arch/riscv/kernel/ptrace.c
+++ b/arch/riscv/kernel/ptrace.c
@@ -114,6 +114,105 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
return &riscv_user_native_view;
}
+struct pt_regs_offset {
+ const char *name;
+ int offset;
+};
+
+#define REG_OFFSET_NAME(r) {.name = #r, .offset = offsetof(struct pt_regs, r)}
+#define REG_OFFSET_END {.name = NULL, .offset = 0}
+
+static const struct pt_regs_offset regoffset_table[] = {
+ REG_OFFSET_NAME(epc),
+ REG_OFFSET_NAME(ra),
+ REG_OFFSET_NAME(sp),
+ REG_OFFSET_NAME(gp),
+ REG_OFFSET_NAME(tp),
+ REG_OFFSET_NAME(t0),
+ REG_OFFSET_NAME(t1),
+ REG_OFFSET_NAME(t2),
+ REG_OFFSET_NAME(s0),
+ REG_OFFSET_NAME(s1),
+ REG_OFFSET_NAME(a0),
+ REG_OFFSET_NAME(a1),
+ REG_OFFSET_NAME(a2),
+ REG_OFFSET_NAME(a3),
+ REG_OFFSET_NAME(a4),
+ REG_OFFSET_NAME(a5),
+ REG_OFFSET_NAME(a6),
+ REG_OFFSET_NAME(a7),
+ REG_OFFSET_NAME(s2),
+ REG_OFFSET_NAME(s3),
+ REG_OFFSET_NAME(s4),
+ REG_OFFSET_NAME(s5),
+ REG_OFFSET_NAME(s6),
+ REG_OFFSET_NAME(s7),
+ REG_OFFSET_NAME(s8),
+ REG_OFFSET_NAME(s9),
+ REG_OFFSET_NAME(s10),
+ REG_OFFSET_NAME(s11),
+ REG_OFFSET_NAME(t3),
+ REG_OFFSET_NAME(t4),
+ REG_OFFSET_NAME(t5),
+ REG_OFFSET_NAME(t6),
+ REG_OFFSET_NAME(status),
+ REG_OFFSET_NAME(badaddr),
+ REG_OFFSET_NAME(cause),
+ REG_OFFSET_NAME(orig_a0),
+ REG_OFFSET_END,
+};
+
+/**
+ * regs_query_register_offset() - query register offset from its name
+ * @name: the name of a register
+ *
+ * regs_query_register_offset() returns the offset of a register in struct
+ * pt_regs from its name. If the name is invalid, this returns -EINVAL;
+ */
+int regs_query_register_offset(const char *name)
+{
+ const struct pt_regs_offset *roff;
+
+ for (roff = regoffset_table; roff->name != NULL; roff++)
+ if (!strcmp(roff->name, name))
+ return roff->offset;
+ return -EINVAL;
+}
+
+/**
+ * regs_within_kernel_stack() - check the address in the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @addr: address which is checked.
+ *
+ * regs_within_kernel_stack() checks @addr is within the kernel stack page(s).
+ * If @addr is within the kernel stack, it returns true. If not, returns false.
+ */
+static bool regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr)
+{
+ return (addr & ~(THREAD_SIZE - 1)) ==
+ (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1));
+}
+
+/**
+ * regs_get_kernel_stack_nth() - get Nth entry of the stack
+ * @regs: pt_regs which contains kernel stack pointer.
+ * @n: stack entry number.
+ *
+ * regs_get_kernel_stack_nth() returns @n th entry of the kernel stack which
+ * is specified by @regs. If the @n th entry is NOT in the kernel stack,
+ * this returns 0.
+ */
+unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n)
+{
+ unsigned long *addr = (unsigned long *)kernel_stack_pointer(regs);
+
+ addr += n;
+ if (regs_within_kernel_stack(regs, (unsigned long)addr))
+ return *addr;
+ else
+ return 0;
+}
+
void ptrace_disable(struct task_struct *child)
{
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
diff --git a/arch/riscv/kernel/sbi.c b/arch/riscv/kernel/sbi.c
index 226ccce0f9e0..f4a7db3d309e 100644
--- a/arch/riscv/kernel/sbi.c
+++ b/arch/riscv/kernel/sbi.c
@@ -351,7 +351,7 @@ static int __sbi_rfence_v02(int fid, const unsigned long *hart_mask,
* sbi_set_timer() - Program the timer for next timer event.
* @stime_value: The value after which next timer event should fire.
*
- * Return: None
+ * Return: None.
*/
void sbi_set_timer(uint64_t stime_value)
{
@@ -362,11 +362,11 @@ void sbi_set_timer(uint64_t stime_value)
* sbi_send_ipi() - Send an IPI to any hart.
* @hart_mask: A cpu mask containing all the target harts.
*
- * Return: None
+ * Return: 0 on success, appropriate linux error code otherwise.
*/
-void sbi_send_ipi(const unsigned long *hart_mask)
+int sbi_send_ipi(const unsigned long *hart_mask)
{
- __sbi_send_ipi(hart_mask);
+ return __sbi_send_ipi(hart_mask);
}
EXPORT_SYMBOL(sbi_send_ipi);
@@ -374,12 +374,12 @@ EXPORT_SYMBOL(sbi_send_ipi);
* sbi_remote_fence_i() - Execute FENCE.I instruction on given remote harts.
* @hart_mask: A cpu mask containing all the target harts.
*
- * Return: None
+ * Return: 0 on success, appropriate linux error code otherwise.
*/
-void sbi_remote_fence_i(const unsigned long *hart_mask)
+int sbi_remote_fence_i(const unsigned long *hart_mask)
{
- __sbi_rfence(SBI_EXT_RFENCE_REMOTE_FENCE_I,
- hart_mask, 0, 0, 0, 0);
+ return __sbi_rfence(SBI_EXT_RFENCE_REMOTE_FENCE_I,
+ hart_mask, 0, 0, 0, 0);
}
EXPORT_SYMBOL(sbi_remote_fence_i);
@@ -390,14 +390,14 @@ EXPORT_SYMBOL(sbi_remote_fence_i);
* @start: Start of the virtual address
* @size: Total size of the virtual address range.
*
- * Return: None
+ * Return: 0 on success, appropriate linux error code otherwise.
*/
-void sbi_remote_sfence_vma(const unsigned long *hart_mask,
+int sbi_remote_sfence_vma(const unsigned long *hart_mask,
unsigned long start,
unsigned long size)
{
- __sbi_rfence(SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
- hart_mask, start, size, 0, 0);
+ return __sbi_rfence(SBI_EXT_RFENCE_REMOTE_SFENCE_VMA,
+ hart_mask, start, size, 0, 0);
}
EXPORT_SYMBOL(sbi_remote_sfence_vma);
@@ -410,15 +410,15 @@ EXPORT_SYMBOL(sbi_remote_sfence_vma);
* @size: Total size of the virtual address range.
* @asid: The value of address space identifier (ASID).
*
- * Return: None
+ * Return: 0 on success, appropriate linux error code otherwise.
*/
-void sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
+int sbi_remote_sfence_vma_asid(const unsigned long *hart_mask,
unsigned long start,
unsigned long size,
unsigned long asid)
{
- __sbi_rfence(SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
- hart_mask, start, size, asid, 0);
+ return __sbi_rfence(SBI_EXT_RFENCE_REMOTE_SFENCE_VMA_ASID,
+ hart_mask, start, size, asid, 0);
}
EXPORT_SYMBOL(sbi_remote_sfence_vma_asid);
@@ -560,7 +560,7 @@ static struct riscv_ipi_ops sbi_ipi_ops = {
.ipi_inject = sbi_send_cpumask_ipi
};
-int __init sbi_init(void)
+void __init sbi_init(void)
{
int ret;
@@ -600,6 +600,4 @@ int __init sbi_init(void)
}
riscv_set_ipi_ops(&sbi_ipi_ops);
-
- return 0;
}
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index c7c0655dd45b..e85bacff1b50 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -216,8 +216,15 @@ static void __init init_resources(void)
static void __init parse_dtb(void)
{
/* Early scan of device tree from init memory */
- if (early_init_dt_scan(dtb_early_va))
+ if (early_init_dt_scan(dtb_early_va)) {
+ const char *name = of_flat_dt_get_machine_name();
+
+ if (name) {
+ pr_info("Machine model: %s\n", name);
+ dump_stack_set_arch_desc("%s (DT)", name);
+ }
return;
+ }
pr_err("No DTB passed to the kernel\n");
#ifdef CONFIG_CMDLINE_FORCE
@@ -252,9 +259,9 @@ void __init setup_arch(char **cmdline_p)
else
pr_err("No DTB found in kernel mappings\n");
#endif
+ misc_mem_init();
- if (IS_ENABLED(CONFIG_RISCV_SBI))
- sbi_init();
+ sbi_init();
if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX))
protect_kernel_text_data();
@@ -275,13 +282,19 @@ void __init setup_arch(char **cmdline_p)
static int __init topology_init(void)
{
- int i;
+ int i, ret;
+
+ for_each_online_node(i)
+ register_one_node(i);
for_each_possible_cpu(i) {
struct cpu *cpu = &per_cpu(cpu_devices, i);
cpu->hotpluggable = cpu_has_hotplug(i);
- register_cpu(cpu, i);
+ ret = register_cpu(cpu, i);
+ if (unlikely(ret))
+ pr_warn("Warning: %s: register_cpu %d failed (%d)\n",
+ __func__, i, ret);
}
return 0;
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index 469aef8ed922..65942b3748b4 100644
--- a/arch/riscv/kernel/signal.c
+++ b/arch/riscv/kernel/signal.c
@@ -309,6 +309,9 @@ static void do_signal(struct pt_regs *regs)
asmlinkage __visible void do_notify_resume(struct pt_regs *regs,
unsigned long thread_info_flags)
{
+ if (thread_info_flags & _TIF_UPROBE)
+ uprobe_notify_resume(regs);
+
/* Handle pending signal delivery */
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs);
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 96167d55ed98..5e276c25646f 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -27,6 +27,7 @@
#include <asm/cpu_ops.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
+#include <asm/numa.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
#include <asm/sbi.h>
@@ -45,13 +46,18 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
{
int cpuid;
int ret;
+ unsigned int curr_cpuid;
+
+ curr_cpuid = smp_processor_id();
+ numa_store_cpu_info(curr_cpuid);
+ numa_add_cpu(curr_cpuid);
/* This covers non-smp usecase mandated by "nosmp" option */
if (max_cpus == 0)
return;
for_each_possible_cpu(cpuid) {
- if (cpuid == smp_processor_id())
+ if (cpuid == curr_cpuid)
continue;
if (cpu_ops[cpuid]->cpu_prepare) {
ret = cpu_ops[cpuid]->cpu_prepare(cpuid);
@@ -59,6 +65,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
continue;
}
set_cpu_present(cpuid, true);
+ numa_store_cpu_info(cpuid);
}
}
@@ -79,6 +86,7 @@ void __init setup_smp(void)
if (hart == cpuid_to_hartid_map(0)) {
BUG_ON(found_boot_cpu);
found_boot_cpu = 1;
+ early_map_cpu_to_node(0, of_node_to_nid(dn));
continue;
}
if (cpuid >= NR_CPUS) {
@@ -88,6 +96,7 @@ void __init setup_smp(void)
}
cpuid_to_hartid_map(cpuid) = hart;
+ early_map_cpu_to_node(cpuid, of_node_to_nid(dn));
cpuid++;
}
@@ -153,6 +162,7 @@ asmlinkage __visible void smp_callin(void)
current->active_mm = mm;
notify_cpu_starting(curr_cpuid);
+ numa_add_cpu(curr_cpuid);
update_siblings_masks(curr_cpuid);
set_cpu_online(curr_cpuid, 1);
diff --git a/arch/riscv/kernel/soc.c b/arch/riscv/kernel/soc.c
index c7b0a73e382e..a0516172a33c 100644
--- a/arch/riscv/kernel/soc.c
+++ b/arch/riscv/kernel/soc.c
@@ -26,30 +26,3 @@ void __init soc_early_init(void)
}
}
}
-
-static bool soc_builtin_dtb_match(unsigned long vendor_id,
- unsigned long arch_id, unsigned long imp_id,
- const struct soc_builtin_dtb *entry)
-{
- return entry->vendor_id == vendor_id &&
- entry->arch_id == arch_id &&
- entry->imp_id == imp_id;
-}
-
-void * __init soc_lookup_builtin_dtb(void)
-{
- unsigned long vendor_id, arch_id, imp_id;
- const struct soc_builtin_dtb *s;
-
- __asm__ ("csrr %0, mvendorid" : "=r"(vendor_id));
- __asm__ ("csrr %0, marchid" : "=r"(arch_id));
- __asm__ ("csrr %0, mimpid" : "=r"(imp_id));
-
- for (s = (void *)&__soc_builtin_dtb_table_start;
- (void *)s < (void *)&__soc_builtin_dtb_table_end; s++) {
- if (soc_builtin_dtb_match(vendor_id, arch_id, imp_id, s))
- return s->dtb_func();
- }
-
- return NULL;
-}
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c
index df5d2da7c40b..3f893c9d9d85 100644
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
@@ -53,9 +53,15 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
/* Unwind stack frame */
frame = (struct stackframe *)fp - 1;
sp = fp;
- fp = frame->fp;
- pc = ftrace_graph_ret_addr(current, NULL, frame->ra,
- (unsigned long *)(fp - 8));
+ if (regs && (regs->epc == pc) && (frame->fp & 0x7)) {
+ fp = frame->ra;
+ pc = regs->ra;
+ } else {
+ fp = frame->fp;
+ pc = ftrace_graph_ret_addr(current, NULL, frame->ra,
+ (unsigned long *)(fp - 8));
+ }
+
}
}
@@ -100,10 +106,16 @@ static bool print_trace_address(void *arg, unsigned long pc)
return true;
}
+void dump_backtrace(struct pt_regs *regs, struct task_struct *task,
+ const char *loglvl)
+{
+ pr_cont("%sCall Trace:\n", loglvl);
+ walk_stackframe(task, regs, print_trace_address, (void *)loglvl);
+}
+
void show_stack(struct task_struct *task, unsigned long *sp, const char *loglvl)
{
- pr_cont("Call Trace:\n");
- walk_stackframe(task, NULL, print_trace_address, (void *)loglvl);
+ dump_backtrace(NULL, task, loglvl);
}
static bool save_wchan(void *arg, unsigned long pc)
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index ad14f4466d92..3ed2c23601a0 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -12,10 +12,12 @@
#include <linux/signal.h>
#include <linux/kdebug.h>
#include <linux/uaccess.h>
+#include <linux/kprobes.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/irq.h>
+#include <asm/bug.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/csr.h>
@@ -66,7 +68,7 @@ void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
tsk->comm, task_pid_nr(tsk), signo, code, addr);
print_vma_addr(KERN_CONT " in ", instruction_pointer(regs));
pr_cont("\n");
- show_regs(regs);
+ __show_regs(regs);
}
force_sig_fault(signo, code, (void __user *)addr);
@@ -75,6 +77,8 @@ void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
static void do_trap_error(struct pt_regs *regs, int signo, int code,
unsigned long addr, const char *str)
{
+ current->thread.bad_cause = regs->cause;
+
if (user_mode(regs)) {
do_trap(regs, signo, code, addr);
} else {
@@ -145,6 +149,22 @@ static inline unsigned long get_break_insn_length(unsigned long pc)
asmlinkage __visible void do_trap_break(struct pt_regs *regs)
{
+#ifdef CONFIG_KPROBES
+ if (kprobe_single_step_handler(regs))
+ return;
+
+ if (kprobe_breakpoint_handler(regs))
+ return;
+#endif
+#ifdef CONFIG_UPROBES
+ if (uprobe_single_step_handler(regs))
+ return;
+
+ if (uprobe_breakpoint_handler(regs))
+ return;
+#endif
+ current->thread.bad_cause = regs->cause;
+
if (user_mode(regs))
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->epc);
#ifdef CONFIG_KGDB
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 0cfd6da784f8..71a315e73cbe 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -32,9 +32,10 @@ CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
# Disable -pg to prevent insert call site
CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os
-# Disable gcov profiling for VDSO code
+# Disable profiling and instrumentation for VDSO code
GCOV_PROFILE := n
KCOV_INSTRUMENT := n
+KASAN_SANITIZE := n
# Force dependency
$(obj)/vdso.o: $(obj)/vdso.so
diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile
index ac6171e9c19e..25d5c9664e57 100644
--- a/arch/riscv/lib/Makefile
+++ b/arch/riscv/lib/Makefile
@@ -5,3 +5,5 @@ lib-y += memset.o
lib-y += memmove.o
lib-$(CONFIG_MMU) += uaccess.o
lib-$(CONFIG_64BIT) += tishift.o
+
+obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
diff --git a/arch/riscv/lib/error-inject.c b/arch/riscv/lib/error-inject.c
new file mode 100644
index 000000000000..d667ade2bc41
--- /dev/null
+++ b/arch/riscv/lib/error-inject.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/error-injection.h>
+#include <linux/kprobes.h>
+
+void override_function_with_return(struct pt_regs *regs)
+{
+ instruction_pointer_set(regs, regs->ra);
+}
+NOKPROBE_SYMBOL(override_function_with_return);
diff --git a/arch/riscv/mm/Makefile b/arch/riscv/mm/Makefile
index c0185e556ca5..7ebaef10ea1b 100644
--- a/arch/riscv/mm/Makefile
+++ b/arch/riscv/mm/Makefile
@@ -2,7 +2,8 @@
CFLAGS_init.o := -mcmodel=medany
ifdef CONFIG_FTRACE
-CFLAGS_REMOVE_init.o = -pg
+CFLAGS_REMOVE_init.o = $(CC_FLAGS_FTRACE)
+CFLAGS_REMOVE_cacheflush.o = $(CC_FLAGS_FTRACE)
endif
KCOV_INSTRUMENT_init.o := n
diff --git a/arch/riscv/mm/context.c b/arch/riscv/mm/context.c
index 613ec81a8979..68aa312fc352 100644
--- a/arch/riscv/mm/context.c
+++ b/arch/riscv/mm/context.c
@@ -2,13 +2,273 @@
/*
* Copyright (C) 2012 Regents of the University of California
* Copyright (C) 2017 SiFive
+ * Copyright (C) 2021 Western Digital Corporation or its affiliates.
*/
+#include <linux/bitops.h>
+#include <linux/cpumask.h>
#include <linux/mm.h>
+#include <linux/percpu.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/static_key.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include <asm/mmu_context.h>
+#ifdef CONFIG_MMU
+
+static DEFINE_STATIC_KEY_FALSE(use_asid_allocator);
+
+static unsigned long asid_bits;
+static unsigned long num_asids;
+static unsigned long asid_mask;
+
+static atomic_long_t current_version;
+
+static DEFINE_RAW_SPINLOCK(context_lock);
+static cpumask_t context_tlb_flush_pending;
+static unsigned long *context_asid_map;
+
+static DEFINE_PER_CPU(atomic_long_t, active_context);
+static DEFINE_PER_CPU(unsigned long, reserved_context);
+
+static bool check_update_reserved_context(unsigned long cntx,
+ unsigned long newcntx)
+{
+ int cpu;
+ bool hit = false;
+
+ /*
+ * Iterate over the set of reserved CONTEXT looking for a match.
+ * If we find one, then we can update our mm to use new CONTEXT
+ * (i.e. the same CONTEXT in the current_version) but we can't
+ * exit the loop early, since we need to ensure that all copies
+ * of the old CONTEXT are updated to reflect the mm. Failure to do
+ * so could result in us missing the reserved CONTEXT in a future
+ * version.
+ */
+ for_each_possible_cpu(cpu) {
+ if (per_cpu(reserved_context, cpu) == cntx) {
+ hit = true;
+ per_cpu(reserved_context, cpu) = newcntx;
+ }
+ }
+
+ return hit;
+}
+
+static void __flush_context(void)
+{
+ int i;
+ unsigned long cntx;
+
+ /* Must be called with context_lock held */
+ lockdep_assert_held(&context_lock);
+
+ /* Update the list of reserved ASIDs and the ASID bitmap. */
+ bitmap_clear(context_asid_map, 0, num_asids);
+
+ /* Mark already active ASIDs as used */
+ for_each_possible_cpu(i) {
+ cntx = atomic_long_xchg_relaxed(&per_cpu(active_context, i), 0);
+ /*
+ * If this CPU has already been through a rollover, but
+ * hasn't run another task in the meantime, we must preserve
+ * its reserved CONTEXT, as this is the only trace we have of
+ * the process it is still running.
+ */
+ if (cntx == 0)
+ cntx = per_cpu(reserved_context, i);
+
+ __set_bit(cntx & asid_mask, context_asid_map);
+ per_cpu(reserved_context, i) = cntx;
+ }
+
+ /* Mark ASID #0 as used because it is used at boot-time */
+ __set_bit(0, context_asid_map);
+
+ /* Queue a TLB invalidation for each CPU on next context-switch */
+ cpumask_setall(&context_tlb_flush_pending);
+}
+
+static unsigned long __new_context(struct mm_struct *mm)
+{
+ static u32 cur_idx = 1;
+ unsigned long cntx = atomic_long_read(&mm->context.id);
+ unsigned long asid, ver = atomic_long_read(&current_version);
+
+ /* Must be called with context_lock held */
+ lockdep_assert_held(&context_lock);
+
+ if (cntx != 0) {
+ unsigned long newcntx = ver | (cntx & asid_mask);
+
+ /*
+ * If our current CONTEXT was active during a rollover, we
+ * can continue to use it and this was just a false alarm.
+ */
+ if (check_update_reserved_context(cntx, newcntx))
+ return newcntx;
+
+ /*
+ * We had a valid CONTEXT in a previous life, so try to
+ * re-use it if possible.
+ */
+ if (!__test_and_set_bit(cntx & asid_mask, context_asid_map))
+ return newcntx;
+ }
+
+ /*
+ * Allocate a free ASID. If we can't find one then increment
+ * current_version and flush all ASIDs.
+ */
+ asid = find_next_zero_bit(context_asid_map, num_asids, cur_idx);
+ if (asid != num_asids)
+ goto set_asid;
+
+ /* We're out of ASIDs, so increment current_version */
+ ver = atomic_long_add_return_relaxed(num_asids, &current_version);
+
+ /* Flush everything */
+ __flush_context();
+
+ /* We have more ASIDs than CPUs, so this will always succeed */
+ asid = find_next_zero_bit(context_asid_map, num_asids, 1);
+
+set_asid:
+ __set_bit(asid, context_asid_map);
+ cur_idx = asid;
+ return asid | ver;
+}
+
+static void set_mm_asid(struct mm_struct *mm, unsigned int cpu)
+{
+ unsigned long flags;
+ bool need_flush_tlb = false;
+ unsigned long cntx, old_active_cntx;
+
+ cntx = atomic_long_read(&mm->context.id);
+
+ /*
+ * If our active_context is non-zero and the context matches the
+ * current_version, then we update the active_context entry with a
+ * relaxed cmpxchg.
+ *
+ * Following is how we handle racing with a concurrent rollover:
+ *
+ * - We get a zero back from the cmpxchg and end up waiting on the
+ * lock. Taking the lock synchronises with the rollover and so
+ * we are forced to see the updated verion.
+ *
+ * - We get a valid context back from the cmpxchg then we continue
+ * using old ASID because __flush_context() would have marked ASID
+ * of active_context as used and next context switch we will
+ * allocate new context.
+ */
+ old_active_cntx = atomic_long_read(&per_cpu(active_context, cpu));
+ if (old_active_cntx &&
+ ((cntx & ~asid_mask) == atomic_long_read(&current_version)) &&
+ atomic_long_cmpxchg_relaxed(&per_cpu(active_context, cpu),
+ old_active_cntx, cntx))
+ goto switch_mm_fast;
+
+ raw_spin_lock_irqsave(&context_lock, flags);
+
+ /* Check that our ASID belongs to the current_version. */
+ cntx = atomic_long_read(&mm->context.id);
+ if ((cntx & ~asid_mask) != atomic_long_read(&current_version)) {
+ cntx = __new_context(mm);
+ atomic_long_set(&mm->context.id, cntx);
+ }
+
+ if (cpumask_test_and_clear_cpu(cpu, &context_tlb_flush_pending))
+ need_flush_tlb = true;
+
+ atomic_long_set(&per_cpu(active_context, cpu), cntx);
+
+ raw_spin_unlock_irqrestore(&context_lock, flags);
+
+switch_mm_fast:
+ csr_write(CSR_SATP, virt_to_pfn(mm->pgd) |
+ ((cntx & asid_mask) << SATP_ASID_SHIFT) |
+ SATP_MODE);
+
+ if (need_flush_tlb)
+ local_flush_tlb_all();
+}
+
+static void set_mm_noasid(struct mm_struct *mm)
+{
+ /* Switch the page table and blindly nuke entire local TLB */
+ csr_write(CSR_SATP, virt_to_pfn(mm->pgd) | SATP_MODE);
+ local_flush_tlb_all();
+}
+
+static inline void set_mm(struct mm_struct *mm, unsigned int cpu)
+{
+ if (static_branch_unlikely(&use_asid_allocator))
+ set_mm_asid(mm, cpu);
+ else
+ set_mm_noasid(mm);
+}
+
+static int asids_init(void)
+{
+ unsigned long old;
+
+ /* Figure-out number of ASID bits in HW */
+ old = csr_read(CSR_SATP);
+ asid_bits = old | (SATP_ASID_MASK << SATP_ASID_SHIFT);
+ csr_write(CSR_SATP, asid_bits);
+ asid_bits = (csr_read(CSR_SATP) >> SATP_ASID_SHIFT) & SATP_ASID_MASK;
+ asid_bits = fls_long(asid_bits);
+ csr_write(CSR_SATP, old);
+
+ /*
+ * In the process of determining number of ASID bits (above)
+ * we polluted the TLB of current HART so let's do TLB flushed
+ * to remove unwanted TLB enteries.
+ */
+ local_flush_tlb_all();
+
+ /* Pre-compute ASID details */
+ num_asids = 1 << asid_bits;
+ asid_mask = num_asids - 1;
+
+ /*
+ * Use ASID allocator only if number of HW ASIDs are
+ * at-least twice more than CPUs
+ */
+ if (num_asids > (2 * num_possible_cpus())) {
+ atomic_long_set(&current_version, num_asids);
+
+ context_asid_map = kcalloc(BITS_TO_LONGS(num_asids),
+ sizeof(*context_asid_map), GFP_KERNEL);
+ if (!context_asid_map)
+ panic("Failed to allocate bitmap for %lu ASIDs\n",
+ num_asids);
+
+ __set_bit(0, context_asid_map);
+
+ static_branch_enable(&use_asid_allocator);
+
+ pr_info("ASID allocator using %lu bits (%lu entries)\n",
+ asid_bits, num_asids);
+ } else {
+ pr_info("ASID allocator disabled\n");
+ }
+
+ return 0;
+}
+early_initcall(asids_init);
+#else
+static inline void set_mm(struct mm_struct *mm, unsigned int cpu)
+{
+ /* Nothing to do here when there is no MMU */
+}
+#endif
+
/*
* When necessary, performs a deferred icache flush for the given MM context,
* on the local CPU. RISC-V has no direct mechanism for instruction cache
@@ -58,10 +318,7 @@ void switch_mm(struct mm_struct *prev, struct mm_struct *next,
cpumask_clear_cpu(cpu, mm_cpumask(prev));
cpumask_set_cpu(cpu, mm_cpumask(next));
-#ifdef CONFIG_MMU
- csr_write(CSR_SATP, virt_to_pfn(next->pgd) | SATP_MODE);
- local_flush_tlb_all();
-#endif
+ set_mm(next, cpu);
flush_icache_deferred(next);
}
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c
index 3c8b9e433c67..8f17519208c7 100644
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c
@@ -13,14 +13,30 @@
#include <linux/perf_event.h>
#include <linux/signal.h>
#include <linux/uaccess.h>
+#include <linux/kprobes.h>
#include <asm/ptrace.h>
#include <asm/tlbflush.h>
#include "../kernel/head.h"
+static void die_kernel_fault(const char *msg, unsigned long addr,
+ struct pt_regs *regs)
+{
+ bust_spinlocks(1);
+
+ pr_alert("Unable to handle kernel %s at virtual address " REG_FMT "\n", msg,
+ addr);
+
+ bust_spinlocks(0);
+ die(regs, "Oops");
+ do_exit(SIGKILL);
+}
+
static inline void no_context(struct pt_regs *regs, unsigned long addr)
{
+ const char *msg;
+
/* Are we prepared to handle this kernel fault? */
if (fixup_exception(regs))
return;
@@ -29,12 +45,8 @@ static inline void no_context(struct pt_regs *regs, unsigned long addr)
* Oops. The kernel tried to access some bad page. We'll have to
* terminate things with extreme prejudice.
*/
- bust_spinlocks(1);
- pr_alert("Unable to handle kernel %s at virtual address " REG_FMT "\n",
- (addr < PAGE_SIZE) ? "NULL pointer dereference" :
- "paging request", addr);
- die(regs, "Oops");
- do_exit(SIGKILL);
+ msg = (addr < PAGE_SIZE) ? "NULL pointer dereference" : "paging request";
+ die_kernel_fault(msg, addr, regs);
}
static inline void mm_fault_error(struct pt_regs *regs, unsigned long addr, vm_fault_t fault)
@@ -202,6 +214,9 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
tsk = current;
mm = tsk->mm;
+ if (kprobe_page_fault(regs, cause))
+ return;
+
/*
* Fault-in kernel-space virtual memory on-demand.
* The 'reference' page table is init_mm.pgd.
@@ -225,6 +240,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
* in an atomic region, then we must not take the fault.
*/
if (unlikely(faulthandler_disabled() || !mm)) {
+ tsk->thread.bad_cause = cause;
no_context(regs, addr);
return;
}
@@ -232,6 +248,11 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
if (user_mode(regs))
flags |= FAULT_FLAG_USER;
+ if (!user_mode(regs) && addr < TASK_SIZE &&
+ unlikely(!(regs->status & SR_SUM)))
+ die_kernel_fault("access to user memory without uaccess routines",
+ addr, regs);
+
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
if (cause == EXC_STORE_PAGE_FAULT)
@@ -242,16 +263,19 @@ retry:
mmap_read_lock(mm);
vma = find_vma(mm, addr);
if (unlikely(!vma)) {
+ tsk->thread.bad_cause = cause;
bad_area(regs, mm, code, addr);
return;
}
if (likely(vma->vm_start <= addr))
goto good_area;
if (unlikely(!(vma->vm_flags & VM_GROWSDOWN))) {
+ tsk->thread.bad_cause = cause;
bad_area(regs, mm, code, addr);
return;
}
if (unlikely(expand_stack(vma, addr))) {
+ tsk->thread.bad_cause = cause;
bad_area(regs, mm, code, addr);
return;
}
@@ -264,6 +288,7 @@ good_area:
code = SEGV_ACCERR;
if (unlikely(access_error(cause, vma))) {
+ tsk->thread.bad_cause = cause;
bad_area(regs, mm, code, addr);
return;
}
@@ -297,6 +322,7 @@ good_area:
mmap_read_unlock(mm);
if (unlikely(fault & VM_FAULT_ERROR)) {
+ tsk->thread.bad_cause = cause;
mm_fault_error(regs, addr, fault);
return;
}
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index f9f9568d689e..9dfb8b2dffd6 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -21,6 +21,7 @@
#include <asm/soc.h>
#include <asm/io.h>
#include <asm/ptdump.h>
+#include <asm/numa.h>
#include "../kernel/head.h"
@@ -105,55 +106,6 @@ void __init mem_init(void)
print_vm_layout();
}
-#ifdef CONFIG_BLK_DEV_INITRD
-static void __init setup_initrd(void)
-{
- phys_addr_t start;
- unsigned long size;
-
- /* Ignore the virtul address computed during device tree parsing */
- initrd_start = initrd_end = 0;
-
- if (!phys_initrd_size)
- return;
- /*
- * Round the memory region to page boundaries as per free_initrd_mem()
- * This allows us to detect whether the pages overlapping the initrd
- * are in use, but more importantly, reserves the entire set of pages
- * as we don't want these pages allocated for other purposes.
- */
- start = round_down(phys_initrd_start, PAGE_SIZE);
- size = phys_initrd_size + (phys_initrd_start - start);
- size = round_up(size, PAGE_SIZE);
-
- if (!memblock_is_region_memory(start, size)) {
- pr_err("INITRD: 0x%08llx+0x%08lx is not a memory region",
- (u64)start, size);
- goto disable;
- }
-
- if (memblock_is_region_reserved(start, size)) {
- pr_err("INITRD: 0x%08llx+0x%08lx overlaps in-use memory region\n",
- (u64)start, size);
- goto disable;
- }
-
- memblock_reserve(start, size);
- /* Now convert initrd to virtual addresses */
- initrd_start = (unsigned long)__va(phys_initrd_start);
- initrd_end = initrd_start + phys_initrd_size;
- initrd_below_start_ok = 1;
-
- pr_info("Initial ramdisk at: 0x%p (%lu bytes)\n",
- (void *)(initrd_start), size);
- return;
-disable:
- pr_cont(" - disabling initrd\n");
- initrd_start = 0;
- initrd_end = 0;
-}
-#endif /* CONFIG_BLK_DEV_INITRD */
-
void __init setup_bootmem(void)
{
phys_addr_t mem_start = 0;
@@ -198,20 +150,19 @@ void __init setup_bootmem(void)
dma32_phys_limit = min(4UL * SZ_1G, (unsigned long)PFN_PHYS(max_low_pfn));
set_max_mapnr(max_low_pfn - ARCH_PFN_OFFSET);
-#ifdef CONFIG_BLK_DEV_INITRD
- setup_initrd();
-#endif /* CONFIG_BLK_DEV_INITRD */
-
+ reserve_initrd_mem();
/*
- * Avoid using early_init_fdt_reserve_self() since __pa() does
+ * If DTB is built in, no need to reserve its memblock.
+ * Otherwise, do reserve it but avoid using
+ * early_init_fdt_reserve_self() since __pa() does
* not work for DTB pointers that are fixmap addresses
*/
- memblock_reserve(dtb_early_pa, fdt_totalsize(dtb_early_va));
+ if (!IS_ENABLED(CONFIG_BUILTIN_DTB))
+ memblock_reserve(dtb_early_pa, fdt_totalsize(dtb_early_va));
early_init_fdt_scan_reserved_mem();
dma_contiguous_reserve(dma32_phys_limit);
memblock_allow_resize();
- memblock_dump_all();
}
#ifdef CONFIG_MMU
@@ -226,8 +177,6 @@ pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
pte_t fixmap_pte[PTRS_PER_PTE] __page_aligned_bss;
-#define MAX_EARLY_MAPPING_SIZE SZ_128M
-
pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
@@ -302,13 +251,7 @@ static void __init create_pte_mapping(pte_t *ptep,
pmd_t trampoline_pmd[PTRS_PER_PMD] __page_aligned_bss;
pmd_t fixmap_pmd[PTRS_PER_PMD] __page_aligned_bss;
-
-#if MAX_EARLY_MAPPING_SIZE < PGDIR_SIZE
-#define NUM_EARLY_PMDS 1UL
-#else
-#define NUM_EARLY_PMDS (1UL + MAX_EARLY_MAPPING_SIZE / PGDIR_SIZE)
-#endif
-pmd_t early_pmd[PTRS_PER_PMD * NUM_EARLY_PMDS] __initdata __aligned(PAGE_SIZE);
+pmd_t early_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
pmd_t early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAGE_SIZE);
static pmd_t *__init get_pmd_virt_early(phys_addr_t pa)
@@ -330,11 +273,9 @@ static pmd_t *get_pmd_virt_late(phys_addr_t pa)
static phys_addr_t __init alloc_pmd_early(uintptr_t va)
{
- uintptr_t pmd_num;
+ BUG_ON((va - PAGE_OFFSET) >> PGDIR_SHIFT);
- pmd_num = (va - PAGE_OFFSET) >> PGDIR_SHIFT;
- BUG_ON(pmd_num >= NUM_EARLY_PMDS);
- return (uintptr_t)&early_pmd[pmd_num * PTRS_PER_PMD];
+ return (uintptr_t)early_pmd;
}
static phys_addr_t __init alloc_pmd_fixmap(uintptr_t va)
@@ -452,7 +393,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
uintptr_t va, pa, end_va;
uintptr_t load_pa = (uintptr_t)(&_start);
uintptr_t load_sz = (uintptr_t)(&_end) - load_pa;
- uintptr_t map_size = best_map_size(load_pa, MAX_EARLY_MAPPING_SIZE);
+ uintptr_t map_size;
#ifndef __PAGETABLE_PMD_FOLDED
pmd_t fix_bmap_spmd, fix_bmap_epmd;
#endif
@@ -464,12 +405,11 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
* Enforce boot alignment requirements of RV32 and
* RV64 by only allowing PMD or PGD mappings.
*/
- BUG_ON(map_size == PAGE_SIZE);
+ map_size = PMD_SIZE;
/* Sanity check alignment and size */
BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0);
BUG_ON((load_pa % map_size) != 0);
- BUG_ON(load_sz > MAX_EARLY_MAPPING_SIZE);
pt_ops.alloc_pte = alloc_pte_early;
pt_ops.get_pte_virt = get_pte_virt_early;
@@ -511,6 +451,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
/* Setup early PMD for DTB */
create_pgd_mapping(early_pg_dir, DTB_EARLY_BASE_VA,
(uintptr_t)early_dtb_pmd, PGDIR_SIZE, PAGE_TABLE);
+#ifndef CONFIG_BUILTIN_DTB
/* Create two consecutive PMD mappings for FDT early scan */
pa = dtb_pa & ~(PMD_SIZE - 1);
create_pmd_mapping(early_dtb_pmd, DTB_EARLY_BASE_VA,
@@ -518,7 +459,11 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
create_pmd_mapping(early_dtb_pmd, DTB_EARLY_BASE_VA + PMD_SIZE,
pa + PMD_SIZE, PMD_SIZE, PAGE_KERNEL);
dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PMD_SIZE - 1));
+#else /* CONFIG_BUILTIN_DTB */
+ dtb_early_va = __va(dtb_pa);
+#endif /* CONFIG_BUILTIN_DTB */
#else
+#ifndef CONFIG_BUILTIN_DTB
/* Create two consecutive PGD mappings for FDT early scan */
pa = dtb_pa & ~(PGDIR_SIZE - 1);
create_pgd_mapping(early_pg_dir, DTB_EARLY_BASE_VA,
@@ -526,6 +471,9 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa)
create_pgd_mapping(early_pg_dir, DTB_EARLY_BASE_VA + PGDIR_SIZE,
pa + PGDIR_SIZE, PGDIR_SIZE, PAGE_KERNEL);
dtb_early_va = (void *)DTB_EARLY_BASE_VA + (dtb_pa & (PGDIR_SIZE - 1));
+#else /* CONFIG_BUILTIN_DTB */
+ dtb_early_va = __va(dtb_pa);
+#endif /* CONFIG_BUILTIN_DTB */
#endif
dtb_early_pa = dtb_pa;
@@ -616,15 +564,7 @@ static void __init setup_vm_final(void)
#else
asmlinkage void __init setup_vm(uintptr_t dtb_pa)
{
-#ifdef CONFIG_BUILTIN_DTB
- dtb_early_va = soc_lookup_builtin_dtb();
- if (!dtb_early_va) {
- /* Fallback to first available DTS */
- dtb_early_va = (void *) __dtb_start;
- }
-#else
dtb_early_va = (void *)dtb_pa;
-#endif
dtb_early_pa = dtb_pa;
}
@@ -665,9 +605,15 @@ void mark_rodata_ro(void)
void __init paging_init(void)
{
setup_vm_final();
- sparse_init();
setup_zero_page();
+}
+
+void __init misc_mem_init(void)
+{
+ arch_numa_init();
+ sparse_init();
zone_sizes_init();
+ memblock_dump_all();
}
#ifdef CONFIG_SPARSEMEM_VMEMMAP
diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c
index a8a2ffd9114a..3fc18f469efb 100644
--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
@@ -9,6 +9,19 @@
#include <linux/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/fixmap.h>
+#include <asm/pgalloc.h>
+
+static __init void *early_alloc(size_t size, int node)
+{
+ void *ptr = memblock_alloc_try_nid(size, size,
+ __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, node);
+
+ if (!ptr)
+ panic("%pS: Failed to allocate %zu bytes align=%zx nid=%d from=%llx\n",
+ __func__, size, size, node, (u64)__pa(MAX_DMA_ADDRESS));
+
+ return ptr;
+}
extern pgd_t early_pg_dir[PTRS_PER_PGD];
asmlinkage void __init kasan_early_init(void)
@@ -47,40 +60,133 @@ asmlinkage void __init kasan_early_init(void)
local_flush_tlb_all();
}
-static void __init populate(void *start, void *end)
+static void kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end)
+{
+ phys_addr_t phys_addr;
+ pte_t *ptep, *base_pte;
+
+ if (pmd_none(*pmd))
+ base_pte = memblock_alloc(PTRS_PER_PTE * sizeof(pte_t), PAGE_SIZE);
+ else
+ base_pte = (pte_t *)pmd_page_vaddr(*pmd);
+
+ ptep = base_pte + pte_index(vaddr);
+
+ do {
+ if (pte_none(*ptep)) {
+ phys_addr = memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE);
+ set_pte(ptep, pfn_pte(PFN_DOWN(phys_addr), PAGE_KERNEL));
+ }
+ } while (ptep++, vaddr += PAGE_SIZE, vaddr != end);
+
+ set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa(base_pte)), PAGE_TABLE));
+}
+
+static void kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long end)
+{
+ phys_addr_t phys_addr;
+ pmd_t *pmdp, *base_pmd;
+ unsigned long next;
+
+ base_pmd = (pmd_t *)pgd_page_vaddr(*pgd);
+ if (base_pmd == lm_alias(kasan_early_shadow_pmd))
+ base_pmd = memblock_alloc(PTRS_PER_PMD * sizeof(pmd_t), PAGE_SIZE);
+
+ pmdp = base_pmd + pmd_index(vaddr);
+
+ do {
+ next = pmd_addr_end(vaddr, end);
+
+ if (pmd_none(*pmdp) && IS_ALIGNED(vaddr, PMD_SIZE) && (next - vaddr) >= PMD_SIZE) {
+ phys_addr = memblock_phys_alloc(PMD_SIZE, PMD_SIZE);
+ if (phys_addr) {
+ set_pmd(pmdp, pfn_pmd(PFN_DOWN(phys_addr), PAGE_KERNEL));
+ continue;
+ }
+ }
+
+ kasan_populate_pte(pmdp, vaddr, next);
+ } while (pmdp++, vaddr = next, vaddr != end);
+
+ /*
+ * Wait for the whole PGD to be populated before setting the PGD in
+ * the page table, otherwise, if we did set the PGD before populating
+ * it entirely, memblock could allocate a page at a physical address
+ * where KASAN is not populated yet and then we'd get a page fault.
+ */
+ set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(base_pmd)), PAGE_TABLE));
+}
+
+static void kasan_populate_pgd(unsigned long vaddr, unsigned long end)
+{
+ phys_addr_t phys_addr;
+ pgd_t *pgdp = pgd_offset_k(vaddr);
+ unsigned long next;
+
+ do {
+ next = pgd_addr_end(vaddr, end);
+
+ /*
+ * pgdp can't be none since kasan_early_init initialized all KASAN
+ * shadow region with kasan_early_shadow_pmd: if this is stillthe case,
+ * that means we can try to allocate a hugepage as a replacement.
+ */
+ if (pgd_page_vaddr(*pgdp) == (unsigned long)lm_alias(kasan_early_shadow_pmd) &&
+ IS_ALIGNED(vaddr, PGDIR_SIZE) && (next - vaddr) >= PGDIR_SIZE) {
+ phys_addr = memblock_phys_alloc(PGDIR_SIZE, PGDIR_SIZE);
+ if (phys_addr) {
+ set_pgd(pgdp, pfn_pgd(PFN_DOWN(phys_addr), PAGE_KERNEL));
+ continue;
+ }
+ }
+
+ kasan_populate_pmd(pgdp, vaddr, next);
+ } while (pgdp++, vaddr = next, vaddr != end);
+}
+
+static void __init kasan_populate(void *start, void *end)
{
- unsigned long i, offset;
unsigned long vaddr = (unsigned long)start & PAGE_MASK;
unsigned long vend = PAGE_ALIGN((unsigned long)end);
- unsigned long n_pages = (vend - vaddr) / PAGE_SIZE;
- unsigned long n_ptes =
- ((n_pages + PTRS_PER_PTE) & -PTRS_PER_PTE) / PTRS_PER_PTE;
- unsigned long n_pmds =
- ((n_ptes + PTRS_PER_PMD) & -PTRS_PER_PMD) / PTRS_PER_PMD;
-
- pte_t *pte =
- memblock_alloc(n_ptes * PTRS_PER_PTE * sizeof(pte_t), PAGE_SIZE);
- pmd_t *pmd =
- memblock_alloc(n_pmds * PTRS_PER_PMD * sizeof(pmd_t), PAGE_SIZE);
- pgd_t *pgd = pgd_offset_k(vaddr);
-
- for (i = 0; i < n_pages; i++) {
- phys_addr_t phys = memblock_phys_alloc(PAGE_SIZE, PAGE_SIZE);
- set_pte(&pte[i], pfn_pte(PHYS_PFN(phys), PAGE_KERNEL));
- }
-
- for (i = 0, offset = 0; i < n_ptes; i++, offset += PTRS_PER_PTE)
- set_pmd(&pmd[i],
- pfn_pmd(PFN_DOWN(__pa(&pte[offset])),
- __pgprot(_PAGE_TABLE)));
- for (i = 0, offset = 0; i < n_pmds; i++, offset += PTRS_PER_PMD)
- set_pgd(&pgd[i],
- pfn_pgd(PFN_DOWN(__pa(&pmd[offset])),
- __pgprot(_PAGE_TABLE)));
+ kasan_populate_pgd(vaddr, vend);
local_flush_tlb_all();
- memset(start, 0, end - start);
+ memset(start, KASAN_SHADOW_INIT, end - start);
+}
+
+void __init kasan_shallow_populate(void *start, void *end)
+{
+ unsigned long vaddr = (unsigned long)start & PAGE_MASK;
+ unsigned long vend = PAGE_ALIGN((unsigned long)end);
+ unsigned long pfn;
+ int index;
+ void *p;
+ pud_t *pud_dir, *pud_k;
+ pgd_t *pgd_dir, *pgd_k;
+ p4d_t *p4d_dir, *p4d_k;
+
+ while (vaddr < vend) {
+ index = pgd_index(vaddr);
+ pfn = csr_read(CSR_SATP) & SATP_PPN;
+ pgd_dir = (pgd_t *)pfn_to_virt(pfn) + index;
+ pgd_k = init_mm.pgd + index;
+ pgd_dir = pgd_offset_k(vaddr);
+ set_pgd(pgd_dir, *pgd_k);
+
+ p4d_dir = p4d_offset(pgd_dir, vaddr);
+ p4d_k = p4d_offset(pgd_k, vaddr);
+
+ vaddr = (vaddr + PUD_SIZE) & PUD_MASK;
+ pud_dir = pud_offset(p4d_dir, vaddr);
+ pud_k = pud_offset(p4d_k, vaddr);
+
+ if (pud_present(*pud_dir)) {
+ p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
+ pud_populate(&init_mm, pud_dir, p);
+ }
+ vaddr += PAGE_SIZE;
+ }
}
void __init kasan_init(void)
@@ -90,7 +196,15 @@ void __init kasan_init(void)
kasan_populate_early_shadow((void *)KASAN_SHADOW_START,
(void *)kasan_mem_to_shadow((void *)
- VMALLOC_END));
+ VMEMMAP_END));
+ if (IS_ENABLED(CONFIG_KASAN_VMALLOC))
+ kasan_shallow_populate(
+ (void *)kasan_mem_to_shadow((void *)VMALLOC_START),
+ (void *)kasan_mem_to_shadow((void *)VMALLOC_END));
+ else
+ kasan_populate_early_shadow(
+ (void *)kasan_mem_to_shadow((void *)VMALLOC_START),
+ (void *)kasan_mem_to_shadow((void *)VMALLOC_END));
for_each_mem_range(i, &_start, &_end) {
void *start = (void *)__va(_start);
@@ -99,7 +213,7 @@ void __init kasan_init(void)
if (start >= end)
break;
- populate(kasan_mem_to_shadow(start), kasan_mem_to_shadow(end));
+ kasan_populate(kasan_mem_to_shadow(start), kasan_mem_to_shadow(end));
};
for (i = 0; i < PTRS_PER_PTE; i++)
@@ -108,6 +222,6 @@ void __init kasan_init(void)
__pgprot(_PAGE_PRESENT | _PAGE_READ |
_PAGE_ACCESSED)));
- memset(kasan_early_shadow_page, 0, PAGE_SIZE);
+ memset(kasan_early_shadow_page, KASAN_SHADOW_INIT, PAGE_SIZE);
init_task.kasan_depth = 0;
}