"memmap" command prints uefi-specific memory map information. => efi memmap Type Start End Attributes ================ ================ ================ ========== CONVENTIONAL 0000000040000000-000000007de27000 WB RUNTIME DATA 000000007de27000-000000007de28000 WB|RT RESERVED 000000007de28000-000000007de2a000 WB RUNTIME DATA 000000007de2a000-000000007de2b000 WB|RT RESERVED 000000007de2b000-000000007de2c000 WB RUNTIME DATA 000000007de2c000-000000007de2d000 WB|RT LOADER DATA 000000007de2d000-000000007ff37000 WB RUNTIME CODE 000000007ff37000-000000007ff38000 WB|RT LOADER DATA 000000007ff38000-0000000080000000 WB
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efidebug.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 99 insertions(+), 1 deletion(-)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c index 81ab3654f746..39398669e18f 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -309,6 +309,100 @@ static int do_efi_show_images(cmd_tbl_t *cmdtp, int flag, return CMD_RET_SUCCESS; }
+static const char * const efi_mem_type_string[] = { + [EFI_RESERVED_MEMORY_TYPE] = "RESERVED", + [EFI_LOADER_CODE] = "LOADER CODE", + [EFI_LOADER_DATA] = "LOADER DATA", + [EFI_BOOT_SERVICES_CODE] = "BOOT CODE", + [EFI_BOOT_SERVICES_DATA] = "BOOT DATA", + [EFI_RUNTIME_SERVICES_CODE] = "RUNTIME CODE", + [EFI_RUNTIME_SERVICES_DATA] = "RUNTIME DATA", + [EFI_CONVENTIONAL_MEMORY] = "CONVENTIONAL", + [EFI_UNUSABLE_MEMORY] = "UNUSABLE MEM", + [EFI_ACPI_RECLAIM_MEMORY] = "ACPI RECLAIM MEM", + [EFI_ACPI_MEMORY_NVS] = "ACPI NVS", + [EFI_MMAP_IO] = "IO", + [EFI_MMAP_IO_PORT] = "IO PORT", + [EFI_PAL_CODE] = "PAL", +}; + +static const struct efi_mem_attrs { + const u64 bit; + const char *text; +} efi_mem_attrs[] = { + {EFI_MEMORY_UC, "UC"}, + {EFI_MEMORY_UC, "UC"}, + {EFI_MEMORY_WC, "WC"}, + {EFI_MEMORY_WT, "WT"}, + {EFI_MEMORY_WB, "WB"}, + {EFI_MEMORY_UCE, "UCE"}, + {EFI_MEMORY_WP, "WP"}, + {EFI_MEMORY_RP, "RP"}, + {EFI_MEMORY_XP, "WP"}, + {EFI_MEMORY_NV, "NV"}, + {EFI_MEMORY_MORE_RELIABLE, "REL"}, + {EFI_MEMORY_RO, "RO"}, + {EFI_MEMORY_RUNTIME, "RT"}, +}; + +static void print_memory_attributes(u64 attributes) +{ + int sep, i; + + for (sep = 0, i = 0; i < ARRAY_SIZE(efi_mem_attrs); i++) + if (attributes & efi_mem_attrs[i].bit) { + if (sep) { + putc('|'); + } else { + putc(' '); + sep = 1; + } + puts(efi_mem_attrs[i].text); + } +} + +static int do_efi_show_memmap(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + struct efi_mem_desc *memmap = NULL, *map; + efi_uintn_t map_size = 0; + const char *type; + int i; + efi_status_t ret; + + ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) { + memmap = malloc(map_size); + if (!memmap) + return CMD_RET_FAILURE; + ret = efi_get_memory_map(&map_size, memmap, NULL, NULL, NULL); + } + if (ret != EFI_SUCCESS) { + free(memmap); + return CMD_RET_FAILURE; + } + + printf("Type Start%.*s End%.*s Attributes\n", + EFI_HANDLE_WIDTH - 5, spc, EFI_HANDLE_WIDTH - 3, spc); + printf("================ %.*s %.*s ==========\n", + EFI_HANDLE_WIDTH, sep, EFI_HANDLE_WIDTH, sep); + for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) { + if (map->type < EFI_MAX_MEMORY_TYPE) + type = efi_mem_type_string[map->type]; + else + type = "(unknown)"; + printf("%-16s %016llx-%016llx", type, map->physical_start, + map->physical_start + map->num_pages * EFI_PAGE_SIZE); + + print_memory_attributes(map->attribute); + putc('\n'); + } + + free(memmap); + + return CMD_RET_SUCCESS; +} + static int do_efi_boot_add(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -708,6 +802,8 @@ static cmd_tbl_t cmd_efidebug_sub[] = { "", ""), U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images, "", ""), + U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap, + "", ""), };
/* Interpreter command to configure UEFI environment */ @@ -761,7 +857,9 @@ static char efidebug_help_text[] = "efidebug dh\n" " - show uefi handles\n" "efidebug images\n" - " - show loaded images\n"; + " - show loaded images\n" + "efidebug memmap\n" + " - show uefi memory map\n"; #endif
U_BOOT_CMD(