"devices" command prints all the uefi variables on the system.
=> efi devices
Scanning disk ahci_scsi.id0lun0...
Scanning disk ahci_scsi.id1lun0...
Found 4 disks
Device Device Path
================ ====================
000000007ef07ea0 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)
000000007ef00c10 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(0,0)
000000007ef00dd0 /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)
000000007ef07be0
/VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)/HD(1,MBR,0x086246ba,0x800,0x40000)
000000007ef07510
/VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/Scsi(1,0)/HD(2,MBR,0x086246ba,0x40800,0x3f800)
Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
---
cmd/efidebug.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 101 insertions(+), 1 deletion(-)
diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index d836576cf6e0..8a7f775b117a 100644
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -15,6 +15,102 @@
#include <search.h>
#include <linux/ctype.h>
+#define BS systab.boottime
+
+static int efi_get_handles_by_proto(efi_guid_t *guid, efi_handle_t **handlesp,
+ int *num)
+{
+ efi_handle_t *handles = NULL;
+ efi_uintn_t size = 0;
+ efi_status_t ret;
+
+ if (guid) {
+ ret = BS->locate_handle(BY_PROTOCOL, guid, NULL, &size,
+ handles);
+ if (ret == EFI_BUFFER_TOO_SMALL) {
+ handles = calloc(1, size);
+ if (!handles)
+ return -1;
+
+ ret = BS->locate_handle(BY_PROTOCOL, guid, NULL, &size,
+ handles);
+ }
+ if (ret != EFI_SUCCESS) {
+ free(handles);
+ return -1;
+ }
+ } else {
+ ret = BS->locate_handle(ALL_HANDLES, NULL, NULL, &size, NULL);
+ if (ret == EFI_BUFFER_TOO_SMALL) {
+ handles = calloc(1, size);
+ if (!handles)
+ return -1;
+
+ ret = BS->locate_handle(ALL_HANDLES, NULL, NULL, &size,
+ handles);
+ }
+ if (ret != EFI_SUCCESS) {
+ free(handles);
+ return -1;
+ }
+ }
+
+ *handlesp = handles;
+ *num = size / sizeof(efi_handle_t);
+
+ return 0;
+}
+
+static int efi_get_device_handle_info(efi_handle_t handle, u16 **dev_path_text)
+{
+ struct efi_device_path *dp;
+ efi_status_t ret;
+
+ ret = BS->open_protocol(handle, &efi_guid_device_path,
+ (void **)&dp, NULL /* FIXME */, NULL,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL);
+ if (ret == EFI_SUCCESS) {
+ *dev_path_text = efi_dp_str(dp);
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+#define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2)
+
+static const char spc[] = " ";
+static const char sep[] = "================";
+
+static int do_efi_show_devices(cmd_tbl_t *cmdtp, int flag,
+ int argc, char * const argv[])
+{
+ efi_handle_t *handles;
+ u16 *dev_path_text;
+ int num, i;
+
+ handles = NULL;
+ num = 0;
+ if (efi_get_handles_by_proto(NULL, &handles, &num))
+ return CMD_RET_FAILURE;
+
+ if (!num)
+ return CMD_RET_SUCCESS;
+
+ printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH - 6, spc);
+ printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
+ for (i = 0; i < num; i++) {
+ if (!efi_get_device_handle_info(handles[i], &dev_path_text)) {
+ printf("%p %ls\n", handles[i], dev_path_text);
+ efi_free_pool(dev_path_text);
+ }
+ }
+
+ free(handles);
+
+ return CMD_RET_SUCCESS;
+}
+
static int do_efi_boot_add(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
@@ -406,6 +502,8 @@ static int do_efi_boot_opt(cmd_tbl_t *cmdtp, int flag,
static cmd_tbl_t cmd_efidebug_sub[] = {
U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""),
+ U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices,
+ "", ""),
};
/* Interpreter command to configure UEFI environment */
@@ -451,7 +549,9 @@ static char efidebug_help_text[] =
" - set UEFI BootNext variable\n"
"efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n"
" - set/show UEFI boot order\n"
- "\n";
+ "\n"
+ "efidebug devices\n"
+ " - show uefi devices\n";
#endif
U_BOOT_CMD(
--
2.19.1
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
