efi: add efi handle dump command
so we can inspect easly what is supported by the EFI implementation we running on Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD
Sascha Hauer
parent
a371ed0f3c
commit
2f13691f1f
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@ -77,6 +77,11 @@ const char *efi_guid_string(efi_guid_t *g)
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EFI_GUID_STRING(EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_GUID, "Network Interface Identifier Protocol", "EFI Network Interface Identifier Protocol");
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EFI_GUID_STRING(EFI_TIMESTAMP_PROTOCOL_GUID, "Timestamp", "Timestamp");
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/* TPM 1.2 */
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EFI_GUID_STRING( EFI_TCG_PROTOCOL_GUID, "TcgService", "TCGServices Protocol");
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/* TPM 2.0 */
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EFI_GUID_STRING( EFI_TCG2_PROTOCOL_GUID, "Tcg2Service", "TCG2Services Protocol");
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/* File */
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EFI_GUID_STRING(EFI_IDEBUSDXE_INF_GUID, "IdeBusDxe.inf", "EFI IdeBusDxe.inf File GUID");
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EFI_GUID_STRING(EFI_TERMINALDXE_INF_GUID, "TerminalDxe.inf", "EFI TerminalDxe.inf File GUID");
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@ -382,3 +382,172 @@ static int efi_init_devices(void)
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return 0;
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}
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core_initcall(efi_init_devices);
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static void efi_devpath(efi_handle_t handle)
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{
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efi_status_t efiret;
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void *devpath;
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char *dev_path_str;
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efiret = BS->open_protocol(handle, &efi_device_path_protocol_guid,
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&devpath, NULL, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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if (EFI_ERROR(efiret))
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return;
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dev_path_str = device_path_to_str(devpath);
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if (dev_path_str) {
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printf(" Devpath: \n %s\n", dev_path_str);
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free(dev_path_str);
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}
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}
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static void efi_dump(efi_handle_t *handles, unsigned long handle_count)
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{
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int i, j;
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unsigned long num_guids;
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efi_guid_t **guids;
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if (!handles || !handle_count)
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return;
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for (i = 0; i < handle_count; i++) {
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printf("handle-%p\n", handles[i]);
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BS->protocols_per_handle(handles[i], &guids, &num_guids);
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printf(" Protocols:\n");
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for (j = 0; j < num_guids; j++)
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printf(" %d: %pUl: %s\n", j, guids[j],
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efi_guid_string(guids[j]));
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efi_devpath(handles[i]);
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}
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printf("\n");
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}
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static unsigned char to_digit(unsigned char c)
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{
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if (c >= '0' && c <= '9')
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c -= '0';
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else if (c >= 'A' && c <= 'F')
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c -= 'A' - 10;
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else
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c -= 'a' - 10;
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return c;
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}
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#define read_xbit(src, dest, bit) \
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do { \
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int __i; \
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for (__i = (bit - 4); __i >= 0; __i -= 4, src++) \
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dest |= to_digit(*src) << __i; \
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} while (0)
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static int do_efi_protocol_dump(int argc, char **argv)
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{
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unsigned long handle_count = 0;
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efi_handle_t *handles = NULL;
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int ret;
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efi_guid_t guid;
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u32 a = 0;
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u16 b = 0;
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u16 c = 0;
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u8 d0 = 0;
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u8 d1 = 0;
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u8 d2 = 0;
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u8 d3 = 0;
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u8 d4 = 0;
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u8 d5 = 0;
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u8 d6 = 0;
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u8 d7 = 0;
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/* Format 220e73b6-6bdb-4413-8405-b974b108619a */
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if (argc == 1) {
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char *s = argv[0];
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int len = strlen(s);
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if (len != 36)
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return -EINVAL;
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read_xbit(s, a, 32);
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if (*s != '-')
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return -EINVAL;
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s++;
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read_xbit(s, b, 16);
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if (*s != '-')
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return -EINVAL;
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s++;
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read_xbit(s, c, 16);
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if (*s != '-')
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return -EINVAL;
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s++;
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read_xbit(s, d0, 8);
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read_xbit(s, d1, 8);
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if (*s != '-')
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return -EINVAL;
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s++;
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read_xbit(s, d2, 8);
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read_xbit(s, d3, 8);
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read_xbit(s, d4, 8);
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read_xbit(s, d5, 8);
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read_xbit(s, d6, 8);
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read_xbit(s, d7, 8);
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} else if (argc == 11) {
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/* Format :
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* 220e73b6 6bdb 4413 84 05 b9 74 b1 08 61 9a
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* or
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* 0x220e73b6 0x6bdb 0x14413 0x84 0x05 0xb9 0x74 0xb1 0x08 0x61 0x9a
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*/
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a = simple_strtoul(argv[0], NULL, 16);
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b = simple_strtoul(argv[1], NULL, 16);
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c = simple_strtoul(argv[2], NULL, 16);
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d0 = simple_strtoul(argv[3], NULL, 16);
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d1 = simple_strtoul(argv[4], NULL, 16);
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d2 = simple_strtoul(argv[5], NULL, 16);
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d3 = simple_strtoul(argv[6], NULL, 16);
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d4 = simple_strtoul(argv[7], NULL, 16);
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d5 = simple_strtoul(argv[8], NULL, 16);
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d6 = simple_strtoul(argv[9], NULL, 16);
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d7 = simple_strtoul(argv[10], NULL, 16);
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} else {
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return -EINVAL;
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}
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guid = EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7);
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printf("Searching for:\n");
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printf(" %pUl: %s\n", &guid, efi_guid_string(&guid));
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ret = efi_locate_handle(by_protocol, &guid, NULL, &handle_count, &handles);
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if (!ret)
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efi_dump(handles, handle_count);
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return 0;
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}
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static int do_efi_handle_dump(int argc, char *argv[])
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{
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unsigned long handle_count = 0;
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efi_handle_t *handles = NULL;
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int ret;
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if (argc > 1)
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return do_efi_protocol_dump(--argc, ++argv);
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ret = efi_locate_handle(all_handles, NULL, NULL, &handle_count, &handles);
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if (!ret)
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efi_dump(handles, handle_count);
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return 0;
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}
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BAREBOX_CMD_HELP_START(efi_handle_dump)
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BAREBOX_CMD_HELP_TEXT("Dump all the efi handle with protocol and devpath\n")
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BAREBOX_CMD_HELP_END
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BAREBOX_CMD_START(efi_handle_dump)
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.cmd = do_efi_handle_dump,
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BAREBOX_CMD_DESC("Usage: efi_handle_dump")
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BAREBOX_CMD_OPTS("[a-b-c-d0d1-d3d4d5d6d7] or [a b c d0 d1 d2 d3 d4 d5 d6 d7]")
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BAREBOX_CMD_GROUP(CMD_GRP_MISC)
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BAREBOX_CMD_HELP(cmd_efi_handle_dump_help)
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BAREBOX_CMD_END
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@ -480,6 +480,14 @@ extern efi_runtime_services_t *RT;
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#define EFI_SYSTEMD_VENDOR_GUID \
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EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
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/* for TPM 1.2 */
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#define EFI_TCG_PROTOCOL_GUID \
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EFI_GUID(0xf541796d, 0xa62e, 0x4954, 0xa7, 0x75, 0x95, 0x84, 0xf6, 0x1b, 0x9c, 0xdd)
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/* for TPM 2.0 */
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#define EFI_TCG2_PROTOCOL_GUID \
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EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f)
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extern efi_guid_t efi_file_info_id;
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extern efi_guid_t efi_simple_file_system_protocol_guid;
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extern efi_guid_t efi_device_path_protocol_guid;
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