diff options
Diffstat (limited to 'arch/riscv/mm/init.c')
| -rw-r--r-- | arch/riscv/mm/init.c | 66 |
1 files changed, 31 insertions, 35 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index b55be44ff9bd..9996f49959bd 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -17,8 +17,9 @@ #include <asm/fixmap.h> #include <asm/tlbflush.h> #include <asm/sections.h> -#include <asm/pgtable.h> +#include <asm/soc.h> #include <asm/io.h> +#include <asm/ptdump.h> #include "../kernel/head.h" @@ -39,7 +40,7 @@ static void __init zone_sizes_init(void) #endif max_zone_pfns[ZONE_NORMAL] = max_low_pfn; - free_area_init_nodes(max_zone_pfns); + free_area_init(max_zone_pfns); } static void setup_zero_page(void) @@ -47,7 +48,7 @@ static void setup_zero_page(void) memset((void *)empty_zero_page, 0, PAGE_SIZE); } -#ifdef CONFIG_DEBUG_VM +#if defined(CONFIG_MMU) && defined(CONFIG_DEBUG_VM) static inline void print_mlk(char *name, unsigned long b, unsigned long t) { pr_notice("%12s : 0x%08lx - 0x%08lx (%4ld kB)\n", name, b, t, @@ -150,7 +151,8 @@ void __init setup_bootmem(void) memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start); set_max_mapnr(PFN_DOWN(mem_size)); - max_low_pfn = PFN_DOWN(memblock_end_of_DRAM()); + max_pfn = PFN_DOWN(memblock_end_of_DRAM()); + max_low_pfn = max_pfn; #ifdef CONFIG_BLK_DEV_INITRD setup_initrd(); @@ -233,12 +235,12 @@ static void __init create_pte_mapping(pte_t *ptep, uintptr_t va, phys_addr_t pa, phys_addr_t sz, pgprot_t prot) { - uintptr_t pte_index = pte_index(va); + uintptr_t pte_idx = pte_index(va); BUG_ON(sz != PAGE_SIZE); - if (pte_none(ptep[pte_index])) - ptep[pte_index] = pfn_pte(PFN_DOWN(pa), prot); + if (pte_none(ptep[pte_idx])) + ptep[pte_idx] = pfn_pte(PFN_DOWN(pa), prot); } #ifndef __PAGETABLE_PMD_FOLDED @@ -281,21 +283,21 @@ static void __init create_pmd_mapping(pmd_t *pmdp, { pte_t *ptep; phys_addr_t pte_phys; - uintptr_t pmd_index = pmd_index(va); + uintptr_t pmd_idx = pmd_index(va); if (sz == PMD_SIZE) { - if (pmd_none(pmdp[pmd_index])) - pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pa), prot); + if (pmd_none(pmdp[pmd_idx])) + pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pa), prot); return; } - if (pmd_none(pmdp[pmd_index])) { + if (pmd_none(pmdp[pmd_idx])) { pte_phys = alloc_pte(va); - pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE); + pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE); ptep = get_pte_virt(pte_phys); memset(ptep, 0, PAGE_SIZE); } else { - pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_index])); + pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_idx])); ptep = get_pte_virt(pte_phys); } @@ -323,21 +325,21 @@ static void __init create_pgd_mapping(pgd_t *pgdp, { pgd_next_t *nextp; phys_addr_t next_phys; - uintptr_t pgd_index = pgd_index(va); + uintptr_t pgd_idx = pgd_index(va); if (sz == PGDIR_SIZE) { - if (pgd_val(pgdp[pgd_index]) == 0) - pgdp[pgd_index] = pfn_pgd(PFN_DOWN(pa), prot); + if (pgd_val(pgdp[pgd_idx]) == 0) + pgdp[pgd_idx] = pfn_pgd(PFN_DOWN(pa), prot); return; } - if (pgd_val(pgdp[pgd_index]) == 0) { + if (pgd_val(pgdp[pgd_idx]) == 0) { next_phys = alloc_pgd_next(va); - pgdp[pgd_index] = pfn_pgd(PFN_DOWN(next_phys), PAGE_TABLE); + pgdp[pgd_idx] = pfn_pgd(PFN_DOWN(next_phys), PAGE_TABLE); nextp = get_pgd_next_virt(next_phys); memset(nextp, 0, PAGE_SIZE); } else { - next_phys = PFN_PHYS(_pgd_pfn(pgdp[pgd_index])); + next_phys = PFN_PHYS(_pgd_pfn(pgdp[pgd_idx])); nextp = get_pgd_next_virt(next_phys); } @@ -492,7 +494,15 @@ void free_initmem(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 } static inline void setup_vm_final(void) @@ -501,22 +511,6 @@ static inline void setup_vm_final(void) #endif /* CONFIG_MMU */ #ifdef CONFIG_STRICT_KERNEL_RWX -void set_kernel_text_rw(void) -{ - unsigned long text_start = (unsigned long)_text; - unsigned long text_end = (unsigned long)_etext; - - set_memory_rw(text_start, (text_end - text_start) >> PAGE_SHIFT); -} - -void set_kernel_text_ro(void) -{ - unsigned long text_start = (unsigned long)_text; - unsigned long text_end = (unsigned long)_etext; - - set_memory_ro(text_start, (text_end - text_start) >> PAGE_SHIFT); -} - void mark_rodata_ro(void) { unsigned long text_start = (unsigned long)_text; @@ -529,6 +523,8 @@ void mark_rodata_ro(void) set_memory_ro(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT); set_memory_nx(rodata_start, (data_start - rodata_start) >> PAGE_SHIFT); set_memory_nx(data_start, (max_low - data_start) >> PAGE_SHIFT); + + debug_checkwx(); } #endif |