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cmd: add "efidebug capsule" command
"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>
This commit is contained in:
AKASHI Takahiro
Heinrich Schuchardt
parent
bb7e71d33c
commit
7f35cedfd9
1 changed files with 235 additions and 0 deletions
235
cmd/efidebug.c
235
cmd/efidebug.c
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@ -19,6 +19,228 @@
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#include <linux/ctype.h>
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#define BS systab.boottime
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#define RT systab.runtime
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#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT
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/**
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* do_efi_capsule_update() - process a capsule update
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*
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* @cmdtp: Command table
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* @flag: Command flag
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* @argc: Number of arguments
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* @argv: Argument array
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* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
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*
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* Implement efidebug "capsule update" sub-command.
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* process a capsule update.
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*
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* efidebug capsule update [-v] <capsule address>
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*/
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static int do_efi_capsule_update(struct cmd_tbl *cmdtp, int flag,
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int argc, char * const argv[])
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{
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struct efi_capsule_header *capsule;
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int verbose = 0;
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char *endp;
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efi_status_t ret;
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if (argc != 2 && argc != 3)
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return CMD_RET_USAGE;
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if (argc == 3) {
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if (strcmp(argv[1], "-v"))
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return CMD_RET_USAGE;
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verbose = 1;
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argc--;
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argv++;
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}
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capsule = (typeof(capsule))simple_strtoul(argv[1], &endp, 16);
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if (endp == argv[1]) {
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printf("Invalid address: %s", argv[1]);
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return CMD_RET_FAILURE;
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}
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if (verbose) {
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printf("Capsule guid: %pUl\n", &capsule->capsule_guid);
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printf("Capsule flags: 0x%x\n", capsule->flags);
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printf("Capsule header size: 0x%x\n", capsule->header_size);
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printf("Capsule image size: 0x%x\n",
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capsule->capsule_image_size);
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}
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ret = EFI_CALL(RT->update_capsule(&capsule, 1, (u64)NULL));
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if (ret) {
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printf("Cannot handle a capsule at %p", capsule);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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/**
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* do_efi_capsule_show() - show capsule information
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*
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* @cmdtp: Command table
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* @flag: Command flag
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* @argc: Number of arguments
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* @argv: Argument array
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* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
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*
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* Implement efidebug "capsule show" sub-command.
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* show capsule information.
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*
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* efidebug capsule show <capsule address>
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*/
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static int do_efi_capsule_show(struct cmd_tbl *cmdtp, int flag,
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int argc, char * const argv[])
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{
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struct efi_capsule_header *capsule;
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char *endp;
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if (argc != 2)
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return CMD_RET_USAGE;
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capsule = (typeof(capsule))simple_strtoul(argv[1], &endp, 16);
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if (endp == argv[1]) {
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printf("Invalid address: %s", argv[1]);
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return CMD_RET_FAILURE;
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}
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printf("Capsule guid: %pUl\n", &capsule->capsule_guid);
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printf("Capsule flags: 0x%x\n", capsule->flags);
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printf("Capsule header size: 0x%x\n", capsule->header_size);
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printf("Capsule image size: 0x%x\n",
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capsule->capsule_image_size);
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return CMD_RET_SUCCESS;
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}
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/**
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* do_efi_capsule_res() - show a capsule update result
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*
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* @cmdtp: Command table
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* @flag: Command flag
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* @argc: Number of arguments
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* @argv: Argument array
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* Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure
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*
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* Implement efidebug "capsule result" sub-command.
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* show a capsule update result.
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* If result number is not specified, CapsuleLast will be shown.
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*
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* efidebug capsule result [<capsule result number>]
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*/
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static int do_efi_capsule_res(struct cmd_tbl *cmdtp, int flag,
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int argc, char * const argv[])
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{
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int capsule_id;
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char *endp;
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char var_name[12];
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u16 var_name16[12], *p;
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efi_guid_t guid;
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struct efi_capsule_result_variable_header *result = NULL;
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efi_uintn_t size;
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efi_status_t ret;
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if (argc != 1 && argc != 2)
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return CMD_RET_USAGE;
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guid = efi_guid_capsule_report;
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if (argc == 1) {
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size = sizeof(var_name16);
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ret = EFI_CALL(RT->get_variable(L"CapsuleLast", &guid, NULL,
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&size, var_name16));
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if (ret != EFI_SUCCESS) {
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if (ret == EFI_NOT_FOUND)
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printf("CapsuleLast doesn't exist\n");
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else
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printf("Failed to get CapsuleLast\n");
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return CMD_RET_FAILURE;
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}
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printf("CapsuleLast is %ls\n", var_name16);
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} else {
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argc--;
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argv++;
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capsule_id = simple_strtoul(argv[0], &endp, 16);
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if (capsule_id < 0 || capsule_id > 0xffff)
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return CMD_RET_USAGE;
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sprintf(var_name, "Capsule%04X", capsule_id);
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p = var_name16;
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utf8_utf16_strncpy(&p, var_name, 9);
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}
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size = 0;
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ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, NULL));
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if (ret == EFI_BUFFER_TOO_SMALL) {
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result = malloc(size);
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ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size,
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result));
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if (ret != EFI_SUCCESS) {
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free(result);
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printf("Failed to get %ls\n", var_name16);
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return CMD_RET_FAILURE;
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}
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}
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printf("Result total size: 0x%x\n", result->variable_total_size);
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printf("Capsule guid: %pUl\n", &result->capsule_guid);
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printf("Time processed: %04d-%02d-%02d %02d:%02d:%02d\n",
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result->capsule_processed.year, result->capsule_processed.month,
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result->capsule_processed.day, result->capsule_processed.hour,
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result->capsule_processed.minute,
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result->capsule_processed.second);
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printf("Capsule status: 0x%lx\n", result->capsule_status);
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free(result);
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return CMD_RET_SUCCESS;
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}
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static struct cmd_tbl cmd_efidebug_capsule_sub[] = {
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U_BOOT_CMD_MKENT(update, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_update,
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"", ""),
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U_BOOT_CMD_MKENT(show, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_show,
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"", ""),
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U_BOOT_CMD_MKENT(result, CONFIG_SYS_MAXARGS, 1, do_efi_capsule_res,
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"", ""),
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};
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/**
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* do_efi_capsule() - manage UEFI capsules
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*
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* @cmdtp: Command table
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* @flag: Command flag
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* @argc: Number of arguments
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* @argv: Argument array
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* Return: CMD_RET_SUCCESS on success,
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* CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure
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*
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* Implement efidebug "capsule" sub-command.
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*/
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static int do_efi_capsule(struct cmd_tbl *cmdtp, int flag,
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int argc, char * const argv[])
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{
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struct cmd_tbl *cp;
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if (argc < 2)
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return CMD_RET_USAGE;
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argc--; argv++;
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cp = find_cmd_tbl(argv[0], cmd_efidebug_capsule_sub,
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ARRAY_SIZE(cmd_efidebug_capsule_sub));
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if (!cp)
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return CMD_RET_USAGE;
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return cp->cmd(cmdtp, flag, argc, argv);
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}
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#endif /* CONFIG_EFI_HAVE_CAPSULE_SUPPORT */
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/**
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* efi_get_device_handle_info() - get information of UEFI device
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@ -1241,6 +1463,10 @@ static int do_efi_query_info(struct cmd_tbl *cmdtp, int flag,
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static struct cmd_tbl cmd_efidebug_sub[] = {
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U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""),
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#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT
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U_BOOT_CMD_MKENT(capsule, CONFIG_SYS_MAXARGS, 1, do_efi_capsule,
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"", ""),
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#endif
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U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices,
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"", ""),
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U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers,
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@ -1315,6 +1541,15 @@ static char efidebug_help_text[] =
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"efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
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" - set/show UEFI boot order\n"
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"\n"
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#ifdef CONFIG_EFI_HAVE_CAPSULE_SUPPORT
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"efidebug capsule update [-v] <capsule address>\n"
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" - process a capsule\n"
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"efidebug capsule show <capsule address>\n"
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" - show capsule information\n"
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"efidebug capsule result [<capsule result var>]\n"
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" - show a capsule update result\n"
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"\n"
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#endif
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"efidebug devices\n"
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" - show UEFI devices\n"
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"efidebug drivers\n"
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