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cmd: efidebug: add memmap command

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"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>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
AKASHI Takahiro 2019-02-25 15:54:43 +09:00 committed by Heinrich Schuchardt
parent fa5367342a
commit 00358bb804
1 changed files with 126 additions and 1 deletions
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127
cmd/efidebug.c
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@ -335,6 +335,127 @@ 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"},
};
/**
* print_memory_attributes() - print memory map attributes
* @attributes: Attribute value
*
* Print memory map attributes
*/
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);
}
}
#define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2)
/**
* do_efi_show_memmap() - show UEFI memory map
*
* @cmdtp: Command table
* @flag: Command flag
* @argc: Number of arguments
* @argv: Argument array
* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
*
* Implement efidebug "memmap" sub-command.
* Show UEFI memory map.
*/
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_CALL(BS->get_memory_map(&map_size, memmap, NULL, NULL, NULL));
if (ret == EFI_BUFFER_TOO_SMALL) {
map_size += sizeof(struct efi_mem_desc); /* for my own */
ret = EFI_CALL(BS->allocate_pool(EFI_LOADER_DATA,
map_size, (void *)&memmap));
if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
ret = EFI_CALL(BS->get_memory_map(&map_size, memmap,
NULL, NULL, NULL));
}
if (ret != EFI_SUCCESS) {
EFI_CALL(BS->free_pool(memmap));
return CMD_RET_FAILURE;
}
printf("Type Start%.*s End%.*s Attributes\n",
EFI_PHYS_ADDR_WIDTH - 5, spc, EFI_PHYS_ADDR_WIDTH - 3, spc);
printf("================ %.*s %.*s ==========\n",
EFI_PHYS_ADDR_WIDTH, sep, EFI_PHYS_ADDR_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 %.*llx-%.*llx", type,
EFI_PHYS_ADDR_WIDTH,
map->physical_start,
EFI_PHYS_ADDR_WIDTH,
map->physical_start + map->num_pages * EFI_PAGE_SIZE);
print_memory_attributes(map->attribute);
putc('\n');
}
EFI_CALL(BS->free_pool(memmap));
return CMD_RET_SUCCESS;
}
/**
* do_efi_boot_add() - set UEFI load option
*
@ -845,6 +966,8 @@ 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,
"", ""),
};
/**
@ -911,7 +1034,9 @@ 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(