"efidebug capsule" is more or less a debugging utility. efidebug capsule update: invoke UpdateCapsule against data on memory efidebug capsule show: show a capsule header efidebug capsule result: dump a capsule result variable
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- cmd/efidebug.c | 235 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 235 insertions(+)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c index 5288b9920b4d..7d327c82681f 100644 --- a/cmd/efidebug.c +++ b/cmd/efidebug.c @@ -19,6 +19,228 @@ #include <linux/ctype.h>
#define BS systab.boottime +#define RT systab.runtime + +#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT +/** + * do_efi_capsule_update() - process a capsule update + * + * @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 "capsule update" sub-command. + * process a capsule update. + * + * efidebug capsule update [-v] <capsule address> + */ +static int do_efi_capsule_update(struct cmd_tbl *cmdtp, int flag, + int argc, char * const argv[]) +{ + struct efi_capsule_header *capsule; + int verbose = 0; + char *endp; + efi_status_t ret; + + if (argc != 2 && argc != 3) + return CMD_RET_USAGE; + + if (argc == 3) { + if (strcmp(argv[1], "-v")) + return CMD_RET_USAGE; + + verbose = 1; + argc--; + argv++; + } + + capsule = (typeof(capsule))simple_strtoul(argv[1], &endp, 16); + if (endp == argv[1]) { + printf("Invalid address: %s", argv[1]); + return CMD_RET_FAILURE; + } + + if (verbose) { + printf("Capsule guid: %pUl\n", &capsule->capsule_guid); + printf("Capsule flags: 0x%x\n", capsule->flags); + printf("Capsule header size: 0x%x\n", capsule->header_size); + printf("Capsule image size: 0x%x\n", + capsule->capsule_image_size); + } + + ret = EFI_CALL(RT->update_capsule(&capsule, 1, (u64)NULL)); + if (ret) { + printf("Cannot handle a capsule at %p", capsule); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; +} + +/** + * do_efi_capsule_show() - show capsule information + * + * @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 "capsule show" sub-command. + * show capsule information. + * + * efidebug capsule show <capsule address> + */ +static int do_efi_capsule_show(struct cmd_tbl *cmdtp, int flag, + int argc, char * const argv[]) +{ + struct efi_capsule_header *capsule; + char *endp; + + if (argc != 2) + return CMD_RET_USAGE; + + capsule = (typeof(capsule))simple_strtoul(argv[1], &endp, 16); + if (endp == argv[1]) { + printf("Invalid address: %s", argv[1]); + return CMD_RET_FAILURE; + } + + printf("Capsule guid: %pUl\n", &capsule->capsule_guid); + printf("Capsule flags: 0x%x\n", capsule->flags); + printf("Capsule header size: 0x%x\n", capsule->header_size); + printf("Capsule image size: 0x%x\n", + capsule->capsule_image_size); + + return CMD_RET_SUCCESS; +} + +/** + * do_efi_capsule_res() - show a capsule update result + * + * @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 "capsule result" sub-command. + * show a capsule update result. + * If result number is not specified, CapsuleLast will be shown. + * + * efidebug capsule result [<capsule result number>] + */ +static int do_efi_capsule_res(struct cmd_tbl *cmdtp, int flag, + int argc, char * const argv[]) +{ + int capsule_id; + char *endp; + char var_name[12]; + u16 var_name16[12], *p; + efi_guid_t guid; + struct efi_capsule_result_variable_header *result = NULL; + efi_uintn_t size; + efi_status_t ret; + + if (argc != 1 && argc != 2) + return CMD_RET_USAGE; + + guid = efi_guid_capsule_report; + if (argc == 1) { + size = sizeof(var_name16); + ret = EFI_CALL(RT->get_variable(L"CapsuleLast", &guid, NULL, + &size, var_name16)); + if (ret != EFI_SUCCESS) { + if (ret == EFI_NOT_FOUND) + printf("CapsuleLast doesn't exist\n"); + else + printf("Failed to get CapsuleLast\n"); + + return CMD_RET_FAILURE; + } + printf("CapsuleLast is %ls\n", var_name16); + } else { + argc--; + argv++; + + capsule_id = simple_strtoul(argv[0], &endp, 16); + if (capsule_id < 0 || capsule_id > 0xffff) + return CMD_RET_USAGE; + + sprintf(var_name, "Capsule%04X", capsule_id); + p = var_name16; + utf8_utf16_strncpy(&p, var_name, 9); + } + + size = 0; + ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, NULL)); + if (ret == EFI_BUFFER_TOO_SMALL) { + result = malloc(size); + ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, + result)); + if (ret != EFI_SUCCESS) { + free(result); + printf("Failed to get %ls\n", var_name16); + + return CMD_RET_FAILURE; + } + } + + printf("Result total size: 0x%x\n", result->variable_total_size); + printf("Capsule guid: %pUl\n", &result->capsule_guid); + printf("Time processed: %04d-%02d-%02d %02d:%02d:%02d\n", + result->capsule_processed.year, result->capsule_processed.month, + result->capsule_processed.day, result->capsule_processed.hour, + result->capsule_processed.minute, + result->capsule_processed.second); + printf("Capsule status: 0x%lx\n", result->capsule_status); + + free(result); + + return CMD_RET_SUCCESS; +} + +static struct cmd_tbl cmd_efidebug_capsule_sub[] = { + U_BOOT_CMD_MKENT(update, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_update, + "", ""), + U_BOOT_CMD_MKENT(show, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_show, + "", ""), + U_BOOT_CMD_MKENT(result, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_res, + "", ""), +}; + +/** + * do_efi_capsule() - manage UEFI capsules + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * Return: CMD_RET_SUCCESS on success, + * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure + * + * Implement efidebug "capsule" sub-command. + */ +static int do_efi_capsule(struct cmd_tbl *cmdtp, int flag, + int argc, char * const argv[]) +{ + struct cmd_tbl *cp; + + if (argc < 2) + return CMD_RET_USAGE; + + argc--; argv++; + + cp = find_cmd_tbl(argv[0], cmd_efidebug_capsule_sub, + ARRAY_SIZE(cmd_efidebug_capsule_sub)); + if (!cp) + return CMD_RET_USAGE; + + return cp->cmd(cmdtp, flag, argc, argv); +} +#endif /* CONFIG_EFI_HAVE_CAPSULE_SUPPORT */
/** * efi_get_device_handle_info() - get information of UEFI device @@ -1237,6 +1459,10 @@ static int do_efi_query_info(struct cmd_tbl *cmdtp, int flag,
static struct cmd_tbl cmd_efidebug_sub[] = { U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""), +#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT + U_BOOT_CMD_MKENT(capsule, CONFIG_SYS_MAXARGS, 1, do_efi_capsule, + "", ""), +#endif U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices, "", ""), U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers, @@ -1311,6 +1537,15 @@ static char efidebug_help_text[] = "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n" " - set/show UEFI boot order\n" "\n" +#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT + "efidebug capsule update [-v] <capsule address>\n" + " - process a capsule\n" + "efidebug capsule show <capsule address>\n" + " - show capsule information\n" + "efidebug capsule result [<capsule result var>]\n" + " - show a capsule update result\n" + "\n" +#endif "efidebug devices\n" " - show UEFI devices\n" "efidebug drivers\n"