[U-Boot] [PATCH v3 6/8] cmd: efishell: add dh command

[AKASHI Takahiro]

"dh" command prints all the uefi handles used in the system.
=> efishell dh
(T.B.D.)
0: (protocol info not available)
1: (protocol info not available)
2: (protocol info not available)
3: (protocol info not available)
4: (protocol info not available)
5: (protocol info not available)
6: (protocol info not available)
7: (protocol info not available)
8: (protocol info not available)
9: (protocol info not available)
10: (protocol info not available)
11: (protocol info not available)
12: (protocol info not available)
13: (protocol info not available)
14: (protocol info not available)
15: (protocol info not available)

Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
---
 cmd/efishell.c | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/cmd/efishell.c b/cmd/efishell.c
index 5a81a627d616..47ad77606062 100644
--- a/cmd/efishell.c
+++ b/cmd/efishell.c
@@ -511,6 +511,33 @@ static int do_efi_show_memmap(int argc, char * const argv[])
 	return CMD_RET_SUCCESS;
 }
 
+static char *efi_get_proto_info(efi_handle_t handle)
+{
+	return strdup("(protocol info not available)");
+}
+
+static int do_efi_show_handles(int argc, char * const argv[])
+{
+	efi_handle_t *handles = NULL, *handle;
+	char *info;
+	int i;
+
+	handles = efi_get_handles_by_proto(NULL);
+	if (!handles)
+		return CMD_RET_SUCCESS;
+
+	for (handle = handles, i = 0; *handle; handle++, i++) {
+		/* TODO: depends on protocols */
+		info = efi_get_proto_info(*handle);
+		printf("%d: %s\n", i, info ?: "");
+		free(info);
+	}
+
+	free(handles);
+
+	return CMD_RET_SUCCESS;
+}
+
 static int do_efi_boot_add(int argc, char * const argv[])
 {
 	int id;
@@ -900,6 +927,8 @@ static int do_efishell(cmd_tbl_t *cmdtp, int flag,
 		return do_efi_show_images(argc, argv);
 	else if (!strcmp(command, "memmap"))
 		return do_efi_show_memmap(argc, argv);
+	else if (!strcmp(command, "dh"))
+		return do_efi_show_handles(argc, argv);
 	else
 		return CMD_RET_USAGE;
 }
@@ -929,7 +958,9 @@ static char efishell_help_text[] =
 	"efishell images\n"
 	"  - show loaded images\n"
 	"efishell memmap\n"
-	"  - show uefi memory map\n";
+	"  - show uefi memory map\n"
+	"efishell dh\n"
+	"  - show uefi handles\n";
 #endif
 
 U_BOOT_CMD(
-- 
2.19.1