[U-Boot] [PATCH 2/4] efi_loader: DevicePathToText for MAC address

[Heinrich Schuchardt]

Implement DevicePathToText MAC address device path.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 lib/efi_loader/efi_device_path_to_text.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 3a92247f30..c6ac5e52f3 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -9,6 +9,8 @@
 #include <common.h>
 #include <efi_loader.h>
 
+#define MAC_OUTPUT_LEN 22
+
 const efi_guid_t efi_guid_device_path_to_text_protocol =
 		EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID;
 
@@ -35,6 +37,31 @@ uint16_t *efi_convert_device_path_to_text(
 	uint16_t *buffer = NULL;
 
 	switch (device_path->type) {
+	case DEVICE_PATH_TYPE_MESSAGING_DEVICE:
+		switch (device_path->sub_type) {
+		case DEVICE_PATH_SUB_TYPE_MSG_MAC_ADDR: {
+			struct efi_device_path_mac_addr *dp =
+				(struct efi_device_path_mac_addr *)device_path;
+			int i;
+
+			if (dp->if_type != 0 && dp->if_type != 1)
+				break;
+			r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
+					      2 * MAC_OUTPUT_LEN,
+					      (void **)&buffer);
+			if (r != EFI_SUCCESS)
+				break;
+			sprintf((char *)buffer,
+				"MAC(%02x%02x%02x%02x%02x%02x,0x%1x)",
+				dp->mac.addr[0], dp->mac.addr[1],
+				dp->mac.addr[2], dp->mac.addr[3],
+				dp->mac.addr[4], dp->mac.addr[5],
+				dp->if_type);
+			for (i = MAC_OUTPUT_LEN - 1; i >= 0; --i)
+				buffer[i] = ((uint8_t *)buffer)[i];
+			break;
+			}
+		}
 	case DEVICE_PATH_TYPE_MEDIA_DEVICE:
 		switch (device_path->sub_type) {
 		case DEVICE_PATH_SUB_TYPE_FILE_PATH:
-- 
2.11.0