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Diffstat (limited to 'arch/sh/mm/init.c')
-rw-r--r--arch/sh/mm/init.c132
1 files changed, 23 insertions, 109 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index a8e5c0e00fca..99e302eeeec1 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/arch/sh/mm/init.c
*
@@ -26,7 +27,9 @@
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/cache.h>
-#include <asm/sizes.h>
+#include <asm/pgalloc.h>
+#include <linux/sizes.h>
+#include "ioremap.h"
pgd_t swapper_pg_dir[PTRS_PER_PGD];
@@ -44,6 +47,7 @@ void __init __weak plat_mem_setup(void)
static pte_t *__get_pte_phys(unsigned long addr)
{
pgd_t *pgd;
+ p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
@@ -53,7 +57,13 @@ static pte_t *__get_pte_phys(unsigned long addr)
return NULL;
}
- pud = pud_alloc(NULL, pgd, addr);
+ p4d = p4d_alloc(NULL, pgd, addr);
+ if (unlikely(!p4d)) {
+ p4d_ERROR(*p4d);
+ return NULL;
+ }
+
+ pud = pud_alloc(NULL, p4d, addr);
if (unlikely(!pud)) {
pud_ERROR(*pud);
return NULL;
@@ -127,7 +137,7 @@ static pmd_t * __init one_md_table_init(pud_t *pud)
if (pud_none(*pud)) {
pmd_t *pmd;
- pmd = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ pmd = memblock_alloc_or_panic(PAGE_SIZE, PAGE_SIZE);
pud_populate(&init_mm, pud, pmd);
BUG_ON(pmd != pmd_offset(pud, 0));
}
@@ -140,7 +150,7 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
if (pmd_none(*pmd)) {
pte_t *pte;
- pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
+ pte = memblock_alloc_or_panic(PAGE_SIZE, PAGE_SIZE);
pmd_populate_kernel(&init_mm, pmd, pte);
BUG_ON(pte != pte_offset_kernel(pmd, 0));
}
@@ -165,9 +175,9 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
unsigned long vaddr;
vaddr = start;
- i = __pgd_offset(vaddr);
- j = __pud_offset(vaddr);
- k = __pmd_offset(vaddr);
+ i = pgd_index(vaddr);
+ j = pud_index(vaddr);
+ k = pmd_index(vaddr);
pgd = pgd_base + i;
for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
@@ -192,24 +202,11 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
void __init allocate_pgdat(unsigned int nid)
{
unsigned long start_pfn, end_pfn;
-#ifdef CONFIG_NEED_MULTIPLE_NODES
- unsigned long phys;
-#endif
get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
-#ifdef CONFIG_NEED_MULTIPLE_NODES
- phys = __memblock_alloc_base(sizeof(struct pglist_data),
- SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
- /* Retry with all of system memory */
- if (!phys)
- phys = __memblock_alloc_base(sizeof(struct pglist_data),
- SMP_CACHE_BYTES, memblock_end_of_DRAM());
- if (!phys)
- panic("Can't allocate pgdat for node %d\n", nid);
-
- NODE_DATA(nid) = __va(phys);
- memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+#ifdef CONFIG_NUMA
+ alloc_node_data(nid);
#endif
NODE_DATA(nid)->node_start_pfn = start_pfn;
@@ -218,15 +215,12 @@ void __init allocate_pgdat(unsigned int nid)
static void __init do_init_bootmem(void)
{
- struct memblock_region *reg;
+ unsigned long start_pfn, end_pfn;
+ int i;
/* Add active regions with valid PFNs. */
- for_each_memblock(memory, reg) {
- unsigned long start_pfn, end_pfn;
- start_pfn = memblock_region_memory_base_pfn(reg);
- end_pfn = memblock_region_memory_end_pfn(reg);
+ for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL)
__add_active_range(0, start_pfn, end_pfn);
- }
/* All of system RAM sits in node 0 for the non-NUMA case */
allocate_pgdat(0);
@@ -234,12 +228,6 @@ static void __init do_init_bootmem(void)
plat_mem_setup();
- for_each_memblock(memory, reg) {
- int nid = memblock_get_region_node(reg);
-
- memory_present(nid, memblock_region_memory_base_pfn(reg),
- memblock_region_memory_end_pfn(reg));
- }
sparse_init();
}
@@ -335,22 +323,13 @@ void __init paging_init(void)
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
- free_area_init_nodes(max_zone_pfns);
+ free_area_init(max_zone_pfns);
}
unsigned int mem_init_done = 0;
void __init mem_init(void)
{
- pg_data_t *pgdat;
-
- high_memory = NULL;
- for_each_online_pgdat(pgdat)
- high_memory = max_t(void *, high_memory,
- __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
-
- memblock_free_all();
-
/* Set this up early, so we can take care of the zero page */
cpu_cache_init();
@@ -360,12 +339,8 @@ void __init mem_init(void)
vsyscall_init();
- mem_init_print_info(NULL);
pr_info("virtual kernel memory layout:\n"
" fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
-#ifdef CONFIG_HIGHMEM
- " pkmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
-#endif
" vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
" lowmem : 0x%08lx - 0x%08lx (%4ld MB) (cached)\n"
#ifdef CONFIG_UNCACHED_MAPPING
@@ -377,11 +352,6 @@ void __init mem_init(void)
FIXADDR_START, FIXADDR_TOP,
(FIXADDR_TOP - FIXADDR_START) >> 10,
-#ifdef CONFIG_HIGHMEM
- PKMAP_BASE, PKMAP_BASE+LAST_PKMAP*PAGE_SIZE,
- (LAST_PKMAP*PAGE_SIZE) >> 10,
-#endif
-
(unsigned long)VMALLOC_START, VMALLOC_END,
(VMALLOC_END - VMALLOC_START) >> 20,
@@ -404,59 +374,3 @@ void __init mem_init(void)
mem_init_done = 1;
}
-
-void free_initmem(void)
-{
- free_initmem_default(-1);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
-
-#ifdef CONFIG_MEMORY_HOTPLUG
-int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
- bool want_memblock)
-{
- unsigned long start_pfn = PFN_DOWN(start);
- unsigned long nr_pages = size >> PAGE_SHIFT;
- int ret;
-
- /* We only have ZONE_NORMAL, so this is easy.. */
- ret = __add_pages(nid, start_pfn, nr_pages, altmap, want_memblock);
- if (unlikely(ret))
- printk("%s: Failed, __add_pages() == %d\n", __func__, ret);
-
- return ret;
-}
-
-#ifdef CONFIG_NUMA
-int memory_add_physaddr_to_nid(u64 addr)
-{
- /* Node 0 for now.. */
- return 0;
-}
-EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
-#endif
-
-#ifdef CONFIG_MEMORY_HOTREMOVE
-int arch_remove_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap)
-{
- unsigned long start_pfn = PFN_DOWN(start);
- unsigned long nr_pages = size >> PAGE_SHIFT;
- struct zone *zone;
- int ret;
-
- zone = page_zone(pfn_to_page(start_pfn));
- ret = __remove_pages(zone, start_pfn, nr_pages, altmap);
- if (unlikely(ret))
- pr_warn("%s: Failed, __remove_pages() == %d\n", __func__,
- ret);
-
- return ret;
-}
-#endif
-#endif /* CONFIG_MEMORY_HOTPLUG */
generated by cgit (git 2.34.1) at 2025-12-22 09:51:07 +0000