so we can inspect easly what is supported by the EFI implementation we running
on
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagn...@jcrosoft.com>
---
common/efi-guid.c | 5 ++
drivers/efi/efi-device.c | 169 +++++++++++++++++++++++++++++++++++++++++++++++
include/efi.h | 8 +++
3 files changed, 182 insertions(+)
diff --git a/common/efi-guid.c b/common/efi-guid.c
index 04a00ee87..71aa21ddd 100644
--- a/common/efi-guid.c
+++ b/common/efi-guid.c
@@ -77,6 +77,11 @@ const char *efi_guid_string(efi_guid_t *g)
EFI_GUID_STRING(EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_GUID,
"Network Interface Identifier Protocol", "EFI Network Interface Identifier
Protocol");
EFI_GUID_STRING(EFI_TIMESTAMP_PROTOCOL_GUID, "Timestamp", "Timestamp");
+ /* TPM 1.2 */
+ EFI_GUID_STRING( EFI_TCG_PROTOCOL_GUID, "TcgService", "TCGServices
Protocol");
+ /* TPM 2.0 */
+ EFI_GUID_STRING( EFI_TCG2_PROTOCOL_GUID, "Tcg2Service", "TCG2Services
Protocol");
+
/* File */
EFI_GUID_STRING(EFI_IDEBUSDXE_INF_GUID, "IdeBusDxe.inf", "EFI
IdeBusDxe.inf File GUID");
EFI_GUID_STRING(EFI_TERMINALDXE_INF_GUID, "TerminalDxe.inf", "EFI
TerminalDxe.inf File GUID");
diff --git a/drivers/efi/efi-device.c b/drivers/efi/efi-device.c
index 1877794c6..db8b25147 100644
--- a/drivers/efi/efi-device.c
+++ b/drivers/efi/efi-device.c
@@ -382,3 +382,172 @@ static int efi_init_devices(void)
return 0;
}
core_initcall(efi_init_devices);
+
+static void efi_devpath(efi_handle_t handle)
+{
+ efi_status_t efiret;
+ void *devpath;
+ char *dev_path_str;
+
+ efiret = BS->open_protocol(handle, &efi_device_path_protocol_guid,
+ &devpath, NULL, NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (EFI_ERROR(efiret))
+ return;
+
+ dev_path_str = device_path_to_str(devpath);
+ if (dev_path_str) {
+ printf(" Devpath: \n %s\n", dev_path_str);
+ free(dev_path_str);
+ }
+}
+
+static void efi_dump(efi_handle_t *handles, unsigned long handle_count)
+{
+ int i, j;
+ unsigned long num_guids;
+ efi_guid_t **guids;
+
+ if (!handles || !handle_count)
+ return;
+
+ for (i = 0; i < handle_count; i++) {
+ printf("handle-%p\n", handles[i]);
+
+ BS->protocols_per_handle(handles[i], &guids, &num_guids);
+ printf(" Protocols:\n");
+ for (j = 0; j < num_guids; j++)
+ printf(" %d: %pUl: %s\n", j, guids[j],
+ efi_guid_string(guids[j]));
+ efi_devpath(handles[i]);
+ }
+ printf("\n");
+}
+
+static unsigned char to_digit(unsigned char c)
+{
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'A' && c <= 'F')
+ c -= 'A' - 10;
+ else
+ c -= 'a' - 10;
+
+ return c;
+}
+
+#define read_xbit(src, dest, bit) \
+ do { \
+ int __i; \
+ for (__i = (bit - 4); __i >= 0; __i -= 4, src++) \
+ dest |= to_digit(*src) << __i; \
+ } while (0)
+
+static int do_efi_protocol_dump(int argc, char **argv)
+{
+ unsigned long handle_count = 0;
+ efi_handle_t *handles = NULL;
+ int ret;
+ efi_guid_t guid;
+ u32 a = 0;
+ u16 b = 0;
+ u16 c = 0;
+ u8 d0 = 0;
+ u8 d1 = 0;
+ u8 d2 = 0;
+ u8 d3 = 0;
+ u8 d4 = 0;
+ u8 d5 = 0;
+ u8 d6 = 0;
+ u8 d7 = 0;
+
+ /* Format 220e73b6-6bdb-4413-8405-b974b108619a */
+ if (argc == 1) {
+ char *s = argv[0];
+ int len = strlen(s);
+
+ if (len != 36)
+ return -EINVAL;
+
+ read_xbit(s, a, 32);
+ if (*s != '-')
+ return -EINVAL;
+ s++;
+ read_xbit(s, b, 16);
+ if (*s != '-')
+ return -EINVAL;
+ s++;
+ read_xbit(s, c, 16);
+ if (*s != '-')
+ return -EINVAL;
+ s++;
+ read_xbit(s, d0, 8);
+ read_xbit(s, d1, 8);
+ if (*s != '-')
+ return -EINVAL;
+ s++;
+ read_xbit(s, d2, 8);
+ read_xbit(s, d3, 8);
+ read_xbit(s, d4, 8);
+ read_xbit(s, d5, 8);
+ read_xbit(s, d6, 8);
+ read_xbit(s, d7, 8);
+ } else if (argc == 11) {
+ /* Format :
+ * 220e73b6 6bdb 4413 84 05 b9 74 b1 08 61 9a
+ * or
+ * 0x220e73b6 0x6bdb 0x14413 0x84 0x05 0xb9 0x74 0xb1 0x08
0x61 0x9a
+ */
+ a = simple_strtoul(argv[0], NULL, 16);
+ b = simple_strtoul(argv[1], NULL, 16);
+ c = simple_strtoul(argv[2], NULL, 16);
+ d0 = simple_strtoul(argv[3], NULL, 16);
+ d1 = simple_strtoul(argv[4], NULL, 16);
+ d2 = simple_strtoul(argv[5], NULL, 16);
+ d3 = simple_strtoul(argv[6], NULL, 16);
+ d4 = simple_strtoul(argv[7], NULL, 16);
+ d5 = simple_strtoul(argv[8], NULL, 16);
+ d6 = simple_strtoul(argv[9], NULL, 16);
+ d7 = simple_strtoul(argv[10], NULL, 16);
+ } else {
+ return -EINVAL;
+ }
+
+ guid = EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7);
+
+ printf("Searching for:\n");
+ printf(" %pUl: %s\n", &guid, efi_guid_string(&guid));
+
+ ret = efi_locate_handle(by_protocol, &guid, NULL, &handle_count,
&handles);
+ if (!ret)
+ efi_dump(handles, handle_count);
+
+ return 0;
+}
+
+static int do_efi_handle_dump(int argc, char *argv[])
+{
+ unsigned long handle_count = 0;
+ efi_handle_t *handles = NULL;
+ int ret;
+
+ if (argc > 1)
+ return do_efi_protocol_dump(--argc, ++argv);
+
+ ret = efi_locate_handle(all_handles, NULL, NULL, &handle_count,
&handles);
+ if (!ret)
+ efi_dump(handles, handle_count);
+
+ return 0;
+}
+
+BAREBOX_CMD_HELP_START(efi_handle_dump)
+BAREBOX_CMD_HELP_TEXT("Dump all the efi handle with protocol and devpath\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(efi_handle_dump)
+ .cmd = do_efi_handle_dump,
+ BAREBOX_CMD_DESC("Usage: efi_handle_dump")
+ BAREBOX_CMD_OPTS("[a-b-c-d0d1-d3d4d5d6d7] or [a b c d0 d1 d2 d3 d4 d5
d6 d7]")
+ BAREBOX_CMD_GROUP(CMD_GRP_MISC)
+ BAREBOX_CMD_HELP(cmd_efi_handle_dump_help)
+BAREBOX_CMD_END
diff --git a/include/efi.h b/include/efi.h
index d1b331ce5..5691f4e8f 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -480,6 +480,14 @@ extern efi_runtime_services_t *RT;
#define EFI_SYSTEMD_VENDOR_GUID \
EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29,
0xbb, 0x8c, 0x4f)
+/* for TPM 1.2 */
+#define EFI_TCG_PROTOCOL_GUID \
+ EFI_GUID(0xf541796d, 0xa62e, 0x4954, 0xa7, 0x75, 0x95, 0x84, 0xf6,
0x1b, 0x9c, 0xdd)
+
+/* for TPM 2.0 */
+#define EFI_TCG2_PROTOCOL_GUID \
+ EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d,
0xb2, 0x72, 0x0f)
+
extern efi_guid_t efi_file_info_id;
extern efi_guid_t efi_simple_file_system_protocol_guid;
extern efi_guid_t efi_device_path_protocol_guid;
--
2.11.0
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