Added efi_status_to_str()

efilib.h

@@ -5,6 +5,85 @@
 
 #define EFI_ERROR(status) (((EFI_INTN)(status)) < 0)
 
+static inline const char *efi_status_to_str(EFI_STATUS s)
+{
+	switch (s) {
+		case EFI_SUCCESS:
+			return "Success";
+		case EFI_LOAD_ERROR:
+			return "Image failed to load";
+		case EFI_INVALID_PARAMETER:
+			return "Invalid parameter specified";
+		case EFI_UNSUPPORTED:
+			return "Operation not supported";
+		case EFI_BAD_BUFFER_SIZE:
+			return "Improper buffer size";
+		case EFI_BUFFER_TOO_SMALL:
+			return "Buffer is too small";
+		case EFI_NOT_READY:
+			return "No data pending";
+		case EFI_DEVICE_ERROR:
+			return "Device reported an error";
+		case EFI_WRITE_PROTECTED:
+			return "Device has write protection";
+		case EFI_OUT_OF_RESOURCES:
+			return "Out of resources";
+		case EFI_VOLUME_CORRUPTED:
+			return "File system is corrupted";
+		case EFI_VOLUME_FULL:
+			return "No more space on filesystem";
+		case EFI_NO_MEDIA:
+			return "No medium found";
+		case EFI_MEDIA_CHANGED:
+			return "Medium has changed";
+		case EFI_NOT_FOUND:
+			return "Item not found";
+		case EFI_ACCESS_DENIED:
+			return "Access denied";
+		case EFI_NO_RESPONSE:
+			return "Server was not found or did not respond";
+		case EFI_NO_MAPPING:
+			return "A mapping to a device doesn't exist";
+		case EFI_TIMEOUT:
+			return "Timeout";
+		case EFI_NOT_STARTED:
+			return "Protocol has not been started yet";
+		case EFI_ALREADY_STARTED:
+			return "Protocol has already been started";
+		case EFI_ABORTED:
+			return "Operation was aborted";
+		case EFI_ICMP_ERROR:
+			return "ICMP error";
+		case EFI_TFTP_ERROR:
+			return "TFTP error";
+		case EFI_PROTOCOL_ERROR:
+			return "Protocol error";
+		case EFI_INCOMPATIBLE_VERSION:
+			return "Incompatible version";
+		case EFI_SECURITY_VIOLATION:
+			return "Security violation";
+		case EFI_CRC_ERROR:
+			return "CRC error";
+		case EFI_END_OF_MEDIA:
+			return "End of media reached";
+		case EFI_END_OF_FILE:
+			return "End of file reached";
+		case EFI_INVALID_LANGUAGE:
+			return "Invalid language specified";
+		case EFI_COMPROMISED_DATA:
+			return "Security status of data is unknown or compromised";
+		case EFI_IP_ADDRESS_CONFLICT:
+			return "IP Address conflict";
+		case EFI_HTTP_ERROR:
+			return "HTTP Error";
+		default:
+			return "Unknown Error";
+	}
+
+	__builtin_unreachable();
+	return "Unknown Error";
+}
+
 /* AxBoot-specific stuff */
 #ifdef AXBOOT_UEFI