diff options
Diffstat (limited to 'arch/arm/mm/idmap.c')
| -rw-r--r-- | arch/arm/mm/idmap.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index 1d1edd064199..4a833e89782a 100644 --- a/arch/arm/mm/idmap.c +++ b/arch/arm/mm/idmap.c @@ -3,11 +3,12 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/mm_types.h> +#include <linux/pgtable.h> #include <asm/cputype.h> #include <asm/idmap.h> +#include <asm/hwcap.h> #include <asm/pgalloc.h> -#include <asm/pgtable.h> #include <asm/sections.h> #include <asm/system_info.h> @@ -67,7 +68,8 @@ static void idmap_add_pmd(pud_t *pud, unsigned long addr, unsigned long end, static void idmap_add_pud(pgd_t *pgd, unsigned long addr, unsigned long end, unsigned long prot) { - pud_t *pud = pud_offset(pgd, addr); + p4d_t *p4d = p4d_offset(pgd, addr); + pud_t *pud = pud_offset(p4d, addr); unsigned long next; do { @@ -82,8 +84,15 @@ static void identity_mapping_add(pgd_t *pgd, const char *text_start, unsigned long addr, end; unsigned long next; +#ifdef CONFIG_XIP_KERNEL + addr = (phys_addr_t)(text_start) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR; + end = (phys_addr_t)(text_end) - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR; +#else addr = virt_to_idmap(text_start); end = virt_to_idmap(text_end); +#endif pr_info("Setting up static identity map for 0x%lx - 0x%lx\n", addr, end); prot |= PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AF; @@ -110,7 +119,8 @@ static int __init init_static_idmap(void) __idmap_text_end, 0); /* Flush L1 for the hardware to see this page table content */ - flush_cache_louis(); + if (!(elf_hwcap & HWCAP_LPAE)) + flush_cache_louis(); return 0; } |