diff options
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/Kconfig | 7 | ||||
| -rw-r--r-- | arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts | 4 | ||||
| -rw-r--r-- | arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi | 2 | ||||
| -rw-r--r-- | arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 2 | ||||
| -rw-r--r-- | arch/riscv/include/asm/page.h | 7 | ||||
| -rw-r--r-- | arch/riscv/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/riscv/kernel/ptrace.c | 4 | ||||
| -rw-r--r-- | arch/riscv/kernel/setup.c | 4 | ||||
| -rw-r--r-- | arch/riscv/kernel/stacktrace.c | 2 | ||||
| -rw-r--r-- | arch/riscv/mm/init.c | 19 |
10 files changed, 38 insertions, 15 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 8fcceb8eda07..4f7b70ae7c31 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -492,10 +492,16 @@ config CC_HAVE_STACKPROTECTOR_TLS config STACKPROTECTOR_PER_TASK def_bool y + depends on !GCC_PLUGIN_RANDSTRUCT depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS +config PHYS_RAM_BASE_FIXED + bool "Explicitly specified physical RAM address" + default n + config PHYS_RAM_BASE hex "Platform Physical RAM address" + depends on PHYS_RAM_BASE_FIXED default "0x80000000" help This is the physical address of RAM in the system. It has to be @@ -508,6 +514,7 @@ config XIP_KERNEL # This prevents XIP from being enabled by all{yes,mod}config, which # fail to build since XIP doesn't support large kernels. depends on !COMPILE_TEST + select PHYS_RAM_BASE_FIXED help Execute-In-Place allows the kernel to run from non-volatile storage directly addressable by the CPU, such as NOR flash. This saves RAM diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts index ec79944065c9..baea7d204639 100644 --- a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts @@ -14,6 +14,10 @@ model = "Microchip PolarFire-SoC Icicle Kit"; compatible = "microchip,mpfs-icicle-kit"; + aliases { + ethernet0 = &emac1; + }; + chosen { stdout-path = &serial0; }; diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi index b9819570a7d1..9d2fbbc1f777 100644 --- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi +++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi @@ -317,7 +317,7 @@ reg = <0x0 0x20112000 0x0 0x2000>; interrupt-parent = <&plic>; interrupts = <70 71 72 73>; - mac-address = [00 00 00 00 00 00]; + local-mac-address = [00 00 00 00 00 00]; clocks = <&clkcfg 5>, <&clkcfg 2>; status = "disabled"; clock-names = "pclk", "hclk"; diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts index b1c3c596578f..2e4ea84f27e7 100644 --- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts +++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts @@ -24,7 +24,7 @@ memory@80000000 { device_type = "memory"; - reg = <0x0 0x80000000 0x2 0x00000000>; + reg = <0x0 0x80000000 0x4 0x00000000>; }; soc { diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h index cca8764aed83..b0ca5058e7ae 100644 --- a/arch/riscv/include/asm/page.h +++ b/arch/riscv/include/asm/page.h @@ -103,6 +103,7 @@ struct kernel_mapping { }; extern struct kernel_mapping kernel_map; +extern phys_addr_t phys_ram_base; #ifdef CONFIG_64BIT #define is_kernel_mapping(x) \ @@ -113,9 +114,9 @@ extern struct kernel_mapping kernel_map; #define linear_mapping_pa_to_va(x) ((void *)((unsigned long)(x) + kernel_map.va_pa_offset)) #define kernel_mapping_pa_to_va(y) ({ \ unsigned long _y = y; \ - (_y >= CONFIG_PHYS_RAM_BASE) ? \ - (void *)((unsigned long)(_y) + kernel_map.va_kernel_pa_offset + XIP_OFFSET) : \ - (void *)((unsigned long)(_y) + kernel_map.va_kernel_xip_pa_offset); \ + (IS_ENABLED(CONFIG_XIP_KERNEL) && _y < phys_ram_base) ? \ + (void *)((unsigned long)(_y) + kernel_map.va_kernel_xip_pa_offset) : \ + (void *)((unsigned long)(_y) + kernel_map.va_kernel_pa_offset + XIP_OFFSET); \ }) #define __pa_to_va_nodebug(x) linear_mapping_pa_to_va(x) diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile index d3081e4d9600..3397ddac1a30 100644 --- a/arch/riscv/kernel/Makefile +++ b/arch/riscv/kernel/Makefile @@ -11,7 +11,7 @@ endif CFLAGS_syscall_table.o += $(call cc-option,-Wno-override-init,) ifdef CONFIG_KEXEC -AFLAGS_kexec_relocate.o := -mcmodel=medany -mno-relax +AFLAGS_kexec_relocate.o := -mcmodel=medany $(call cc-option,-mno-relax) endif extra-y += head.o diff --git a/arch/riscv/kernel/ptrace.c b/arch/riscv/kernel/ptrace.c index 1a85305720e8..9c0511119bad 100644 --- a/arch/riscv/kernel/ptrace.c +++ b/arch/riscv/kernel/ptrace.c @@ -10,6 +10,7 @@ #include <asm/ptrace.h> #include <asm/syscall.h> #include <asm/thread_info.h> +#include <asm/switch_to.h> #include <linux/audit.h> #include <linux/ptrace.h> #include <linux/elf.h> @@ -56,6 +57,9 @@ static int riscv_fpr_get(struct task_struct *target, { struct __riscv_d_ext_state *fstate = &target->thread.fstate; + if (target == current) + fstate_save(current, task_pt_regs(current)); + membuf_write(&to, fstate, offsetof(struct __riscv_d_ext_state, fcsr)); membuf_store(&to, fstate->fcsr); return membuf_zero(&to, 4); // explicitly pad diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 18bd0e4bc36c..120b2f6f71bc 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -229,8 +229,8 @@ static void __init init_resources(void) } /* Clean-up any unused pre-allocated resources */ - mem_res_sz = (num_resources - res_idx + 1) * sizeof(*mem_res); - memblock_free(__pa(mem_res), mem_res_sz); + if (res_idx >= 0) + memblock_free(__pa(mem_res), (res_idx + 1) * sizeof(*mem_res)); return; error: diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index ac7593607fa6..315db3d0229b 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -27,7 +27,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, fp = frame_pointer(regs); sp = user_stack_pointer(regs); pc = instruction_pointer(regs); - } else if (task == current) { + } else if (task == NULL || task == current) { fp = (unsigned long)__builtin_frame_address(1); sp = (unsigned long)__builtin_frame_address(0); pc = (unsigned long)__builtin_return_address(0); diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index a14bf3910eec..7cb4f391d106 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -36,6 +36,9 @@ EXPORT_SYMBOL(kernel_map); #define kernel_map (*(struct kernel_mapping *)XIP_FIXUP(&kernel_map)) #endif +phys_addr_t phys_ram_base __ro_after_init; +EXPORT_SYMBOL(phys_ram_base); + #ifdef CONFIG_XIP_KERNEL extern char _xiprom[], _exiprom[]; #endif @@ -160,7 +163,7 @@ static void __init setup_bootmem(void) phys_addr_t vmlinux_end = __pa_symbol(&_end); phys_addr_t vmlinux_start = __pa_symbol(&_start); phys_addr_t __maybe_unused max_mapped_addr; - phys_addr_t dram_end; + phys_addr_t phys_ram_end; #ifdef CONFIG_XIP_KERNEL vmlinux_start = __pa_symbol(&_sdata); @@ -181,9 +184,12 @@ static void __init setup_bootmem(void) #endif memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start); - dram_end = memblock_end_of_DRAM(); + phys_ram_end = memblock_end_of_DRAM(); #ifndef CONFIG_64BIT +#ifndef CONFIG_XIP_KERNEL + phys_ram_base = memblock_start_of_DRAM(); +#endif /* * memblock allocator is not aware of the fact that last 4K bytes of * the addressable memory can not be mapped because of IS_ERR_VALUE @@ -191,15 +197,15 @@ static void __init setup_bootmem(void) * if end of dram is equal to maximum addressable memory. For 64-bit * kernel, this problem can't happen here as the end of the virtual * address space is occupied by the kernel mapping then this check must - * be done in create_kernel_page_table. + * be done as soon as the kernel mapping base address is determined. */ max_mapped_addr = __pa(~(ulong)0); - if (max_mapped_addr == (dram_end - 1)) + if (max_mapped_addr == (phys_ram_end - 1)) memblock_set_current_limit(max_mapped_addr - 4096); #endif - min_low_pfn = PFN_UP(memblock_start_of_DRAM()); - max_low_pfn = max_pfn = PFN_DOWN(dram_end); + min_low_pfn = PFN_UP(phys_ram_base); + max_low_pfn = max_pfn = PFN_DOWN(phys_ram_end); dma32_phys_limit = min(4UL * SZ_1G, (unsigned long)PFN_PHYS(max_low_pfn)); set_max_mapnr(max_low_pfn - ARCH_PFN_OFFSET); @@ -558,6 +564,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa) kernel_map.xiprom = (uintptr_t)CONFIG_XIP_PHYS_ADDR; kernel_map.xiprom_sz = (uintptr_t)(&_exiprom) - (uintptr_t)(&_xiprom); + phys_ram_base = CONFIG_PHYS_RAM_BASE; kernel_map.phys_addr = (uintptr_t)CONFIG_PHYS_RAM_BASE; kernel_map.size = (uintptr_t)(&_end) - (uintptr_t)(&_sdata); |