cmd: simplify command efidebug

Currently we have subcommands 'efidebug dh' which shows protocols per
handle and 'efidebug devices' which shows the device path. None shows which
U-Boot device matches the handle.

Change 'efidebug dh' to show the device path and the U-Boot device if any
is associated with the handle.

Remove 'efidebug devices'.

Old output of 'efidebug dh':

    Handle           Protocols
    ================ ====================
    000000001b22e690 Device Path, Block IO
    000000001b22e800 Device Path, Block IO, system, Simple File System

New output of 'efidebug dh':

    000000001b22e690 (host0)
      /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/VenHw(bbe4e671-5773-4ea1-9aab-3a7dbf40c482,00)
      Block IO

    000000001b22e800 (host0:1)
      /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/VenHw(bbe4e671-5773-4ea1-9aab-3a7dbf40c482,00)/HD(1,GPT,7e5c17c5-3f5f-49d0-ae96-511b21d7f273,0x800,0x3f7df)
      Block IO
      system
      Simple File System

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

diff --git a/cmd/efidebug.c b/cmd/efidebug.c
index 25b5c47..4b49f30 100644 (file)
--- a/cmd/efidebug.c
+++ b/cmd/efidebug.c
@@ -8,6 +8,7 @@
 #include <charset.h>
 #include <common.h>
 #include <command.h>
+#include <dm/device.h>
 #include <efi_dt_fixup.h>
 #include <efi_load_initrd.h>
 #include <efi_loader.h>
@@ -344,80 +345,12 @@ static int do_efi_capsule(struct cmd_tbl *cmdtp, int flag,
 }
 #endif /* CONFIG_EFI_HAVE_CAPSULE_SUPPORT */
 
-/**
- * efi_get_device_path_text() - get device path text
- *
- * Return the text representation of the device path of a handle.
- *
- * @handle:    handle of UEFI device
- * Return:
- * Pointer to the device path text or NULL.
- * The caller is responsible for calling FreePool().
- */
-static u16 *efi_get_device_path_text(efi_handle_t handle)
-{
-       struct efi_handler *handler;
-       efi_status_t ret;
-
-       ret = efi_search_protocol(handle, &efi_guid_device_path, &handler);
-       if (ret == EFI_SUCCESS && handler->protocol_interface) {
-               struct efi_device_path *dp = handler->protocol_interface;
-
-               return efi_dp_str(dp);
-       } else {
-               return NULL;
-       }
-}
-
 #define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2)
 
 static const char spc[] = "                ";
 static const char sep[] = "================";
 
 /**
- * do_efi_show_devices() - show UEFI devices
- *
- * @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 "devices" sub-command.
- * Show all UEFI devices and their information.
- */
-static int do_efi_show_devices(struct cmd_tbl *cmdtp, int flag,
-                              int argc, char *const argv[])
-{
-       efi_handle_t *handles;
-       efi_uintn_t num, i;
-       u16 *dev_path_text;
-       efi_status_t ret;
-
-       ret = EFI_CALL(efi_locate_handle_buffer(ALL_HANDLES, NULL, NULL,
-                                               &num, &handles));
-       if (ret != EFI_SUCCESS)
-               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++) {
-               dev_path_text = efi_get_device_path_text(handles[i]);
-               if (dev_path_text) {
-                       printf("%p %ls\n", handles[i], dev_path_text);
-                       efi_free_pool(dev_path_text);
-               }
-       }
-
-       efi_free_pool(handles);
-
-       return CMD_RET_SUCCESS;
-}
-
-/**
  * efi_get_driver_handle_info() - get information of UEFI driver
  *
  * @handle:            Handle of UEFI device
@@ -535,26 +468,25 @@ static int do_efi_show_handles(struct cmd_tbl *cmdtp, int flag,
        if (!num)
                return CMD_RET_SUCCESS;
 
-       printf("Handle%.*s Protocols\n", EFI_HANDLE_WIDTH - 6, spc);
-       printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep);
        for (i = 0; i < num; i++) {
-               printf("%p", handles[i]);
+               struct efi_handler *handler;
+
+               printf("\n%p", handles[i]);
+               if (handles[i]->dev)
+                       printf(" (%s)", handles[i]->dev->name);
+               printf("\n");
+               /* Print device path */
+               ret = efi_search_protocol(handles[i], &efi_guid_device_path,
+                                         &handler);
+               if (ret == EFI_SUCCESS)
+                       printf("  %pD\n", handler->protocol_interface);
                ret = EFI_CALL(BS->protocols_per_handle(handles[i], &guid,
                                                        &count));
-               if (ret || !count) {
-                       putc('\n');
-                       continue;
-               }
-
+               /* Print other protocols */
                for (j = 0; j < count; j++) {
-                       if (j)
-                               printf(", ");
-                       else
-                               putc(' ');
-
-                       printf("%pUs", guid[j]);
+                       if (guidcmp(guid[j], &efi_guid_device_path))
+                               printf("  %pUs\n", guid[j]);
                }
-               putc('\n');
        }
 
        efi_free_pool(handles);
@@ -1535,8 +1467,6 @@ static struct cmd_tbl cmd_efidebug_sub[] = {
        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,
                         "", ""),
        U_BOOT_CMD_MKENT(dh, CONFIG_SYS_MAXARGS, 1, do_efi_show_handles,
@@ -1626,8 +1556,6 @@ static char efidebug_help_text[] =
 #endif
        "\n"
 #endif
-       "efidebug devices\n"
-       "  - show UEFI devices\n"
        "efidebug drivers\n"
        "  - show UEFI drivers\n"
        "efidebug dh\n"