[U-Boot] [PATCH v5 6/7] cmd: efidebug: add memmap command

[AKASHI Takahiro <takahiro.akashi@linaro.org>]

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.akashi@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
>