efi_loader: use log function in boot manager

When booting via the boot manager use log function for user messages
instead of printf() and debug().
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>

lib/efi_loader/efi_bootmgr.c

@@ -5,6 +5,8 @@
  *  Copyright (c) 2017 Rob Clark
  */
 
+#define LOG_CATEGORY LOGC_EFI
+
 #include <common.h>
 #include <charset.h>
 #include <log.h>
@@ -203,14 +205,14 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle)
 	if (lo.attributes & LOAD_OPTION_ACTIVE) {
 		u32 attributes;
 
-		debug("%s: trying to load \"%ls\" from %pD\n",
-		      __func__, lo.label, lo.file_path);
+		log_debug("%s: trying to load \"%ls\" from %pD\n",
+			  __func__, lo.label, lo.file_path);
 
 		ret = EFI_CALL(efi_load_image(true, efi_root, lo.file_path,
 					      NULL, 0, handle));
 		if (ret != EFI_SUCCESS) {
-			printf("Loading from Boot%04X '%ls' failed\n", n,
-			       lo.label);
+			log_warning("Loading %ls '%ls' failed\n",
+				    varname, lo.label);
 			goto error;
 		}
 
@@ -224,11 +226,11 @@ static efi_status_t try_load_entry(u16 n, efi_handle_t *handle)
 		if (ret != EFI_SUCCESS) {
 			if (EFI_CALL(efi_unload_image(*handle))
 			    != EFI_SUCCESS)
-				printf("Unloading image failed\n");
+				log_err("Unloading image failed\n");
 			goto error;
 		}
 
-		printf("Booting: %ls\n", lo.label);
+		log_info("Booting: %ls\n", lo.label);
 	} else {
 		ret = EFI_LOAD_ERROR;
 	}
@@ -268,7 +270,7 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle)
 	if (ret == EFI_SUCCESS || ret == EFI_BUFFER_TOO_SMALL) {
 		/* BootNext does exist here */
 		if (ret == EFI_BUFFER_TOO_SMALL || size != sizeof(u16))
-			printf("BootNext must be 16-bit integer\n");
+			log_err("BootNext must be 16-bit integer\n");
 
 		/* delete BootNext */
 		ret = EFI_CALL(efi_set_variable(
@@ -283,24 +285,26 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle)
 				ret = try_load_entry(bootnext, handle);
 				if (ret == EFI_SUCCESS)
 					return ret;
-				printf("Loading from BootNext failed, falling back to BootOrder\n");
+				log_warning(
+					"Loading from BootNext failed, falling back to BootOrder\n");
 			}
 		} else {
-			printf("Deleting BootNext failed\n");
+			log_err("Deleting BootNext failed\n");
 		}
 	}
 
 	/* BootOrder */
 	bootorder = get_var(L"BootOrder", &efi_global_variable_guid, &size);
 	if (!bootorder) {
-		printf("BootOrder not defined\n");
+		log_info("BootOrder not defined\n");
 		ret = EFI_NOT_FOUND;
 		goto error;
 	}
 
 	num = size / sizeof(uint16_t);
 	for (i = 0; i < num; i++) {
-		debug("%s: trying to load Boot%04X\n", __func__, bootorder[i]);
+		log_debug("%s trying to load Boot%04X\n", __func__,
+			  bootorder[i]);
 		ret = try_load_entry(bootorder[i], handle);
 		if (ret == EFI_SUCCESS)
 			break;