"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/efishell.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 77 insertions(+), 1 deletion(-)
diff --git a/cmd/efishell.c b/cmd/efishell.c index 010870df63c8..5a81a627d616 100644 --- a/cmd/efishell.c +++ b/cmd/efishell.c @@ -439,6 +439,78 @@ static int do_efi_show_images(int argc, char * const argv[]) 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", +}; + +#define EFI_MEM_ATTR(attribute, bit, string) \ + if ((attribute) & (bit)) { \ + if (sep) \ + putc('|'); \ + sep = 1; \ + printf(string); \ + } + +static int do_efi_show_memmap(int argc, char * const argv[]) +{ + struct efi_mem_desc *map = NULL; + efi_uintn_t map_size = 0; + int i, sep; + efi_status_t ret; + + ret = efi_get_memory_map(&map_size, map, NULL, NULL, NULL); + if (ret == EFI_BUFFER_TOO_SMALL) { + map = malloc(map_size); + if (!map) + return CMD_RET_FAILURE; + ret = efi_get_memory_map(&map_size, map, NULL, NULL, NULL); + } + if (ret != EFI_SUCCESS) { + free(map); + return CMD_RET_FAILURE; + } + + printf("Type Start End Attributes\n"); + printf("================ ================ ================ ==========\n"); + for (i = 0; i < map_size / sizeof(*map); map++, i++) { + sep = 0; + printf("%-16s %016llx-%016llx ", + efi_mem_type_string[map->type], + map->physical_start, + map->physical_start + map->num_pages * EFI_PAGE_SIZE); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_UC, "UC"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_WC, "WC"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_WT, "WT"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_WB, "WB"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_UCE, "UCE"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_WP, "WP"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_RP, "RP"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_XP, "WP"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_NV, "NV"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_MORE_RELIABLE, "REL"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_RO, "RO"); + EFI_MEM_ATTR(map->attribute, EFI_MEMORY_RUNTIME, "RT"); + putc('\n'); + } + + free(map); + + return CMD_RET_SUCCESS; +} + static int do_efi_boot_add(int argc, char * const argv[]) { int id; @@ -826,6 +898,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag, return do_efi_show_drivers(argc, argv); else if (!strcmp(command, "images")) return do_efi_show_images(argc, argv); + else if (!strcmp(command, "memmap")) + return do_efi_show_memmap(argc, argv); else return CMD_RET_USAGE; } @@ -853,7 +927,9 @@ static char efishell_help_text[] = "efishell drivers\n" " - show uefi drivers\n" "efishell images\n" - " - show loaded images\n"; + " - show loaded images\n" + "efishell memmap\n" + " - show uefi memory map\n"; #endif
U_BOOT_CMD(