From: AKASHI Takahiro <takahiro.aka...@linaro.org>
"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>
Reviewed-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
cmd/efidebug.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 126 insertions(+), 1 deletion(-)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index e3a2d09..5072a7b 100644
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -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(
--
1.9.1
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