On Mon, Jan 21, 2019 at 02:39:07PM +0100, Alexander Graf wrote:
> On 01/21/2019 08:49 AM, AKASHI Takahiro wrote:
> >"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.aka...@linaro.org>
> >---
> > cmd/efidebug.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++++-
> > 1 file changed, 94 insertions(+), 1 deletion(-)
> >
> >diff --git a/cmd/efidebug.c b/cmd/efidebug.c
> >index 906e6b2d0295..bd6b095562e7 100644
> >--- a/cmd/efidebug.c
> >+++ b/cmd/efidebug.c
> >@@ -592,6 +592,95 @@ 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;
> >+ 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 End
> >Attributes\n");
> >+ printf("================ ================ ================
> >==========\n");
> >+ for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) {
> >+ printf("%-16s %016llx-%016llx",
> >+ efi_mem_type_string[map->type],
>
> Please check that map->type is within bounds (<= PAL; better yet <
> ARRAY_SIZE(efi_mem_type_string)).
OK.
-Takahiro Akashi
>
> Alex
>
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