diff options
Diffstat (limited to 'arch/riscv/include/asm/fixmap.h')
| -rw-r--r-- | arch/riscv/include/asm/fixmap.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/arch/riscv/include/asm/fixmap.h b/arch/riscv/include/asm/fixmap.h index 42d2c42f3cc9..0a55099bb734 100644 --- a/arch/riscv/include/asm/fixmap.h +++ b/arch/riscv/include/asm/fixmap.h @@ -8,8 +8,8 @@ #include <linux/kernel.h> #include <linux/sizes.h> +#include <linux/pgtable.h> #include <asm/page.h> -#include <asm/pgtable.h> #ifdef CONFIG_MMU /* @@ -22,17 +22,37 @@ */ enum fixed_addresses { FIX_HOLE, -#define FIX_FDT_SIZE SZ_1M + /* + * The fdt fixmap mapping must be PMD aligned and will be mapped + * using PMD entries in fixmap_pmd in 64-bit and a PGD entry in 32-bit. + */ FIX_FDT_END, FIX_FDT = FIX_FDT_END + FIX_FDT_SIZE / PAGE_SIZE - 1, + + /* Below fixmaps will be mapped using fixmap_pte */ FIX_PTE, FIX_PMD, + FIX_PUD, + FIX_P4D, + FIX_TEXT_POKE1, + FIX_TEXT_POKE0, FIX_EARLYCON_MEM_BASE, + + __end_of_permanent_fixed_addresses, + /* + * Temporary boot-time mappings, used by early_ioremap(), + * before ioremap() is functional. + */ +#define NR_FIX_BTMAPS (SZ_256K / PAGE_SIZE) +#define FIX_BTMAPS_SLOTS 7 +#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS) + + FIX_BTMAP_END = __end_of_permanent_fixed_addresses, + FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1, + __end_of_fixed_addresses }; -#define FIXMAP_PAGE_IO PAGE_KERNEL - #define __early_set_fixmap __set_fixmap #define __late_set_fixmap __set_fixmap |