efi_loader: support for Ctrl() device path node
* Add the definitions for Ctrl() device path nodes.
* Implement Ctrl() nodes in the device path to text protocol.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/include/efi_api.h b/include/efi_api.h
index 2d18d25..c57868a 100644
--- a/include/efi_api.h
+++ b/include/efi_api.h
@@ -570,6 +570,7 @@
#define DEVICE_PATH_TYPE_HARDWARE_DEVICE 0x01
# define DEVICE_PATH_SUB_TYPE_MEMORY 0x03
# define DEVICE_PATH_SUB_TYPE_VENDOR 0x04
+# define DEVICE_PATH_SUB_TYPE_CONTROLLER 0x05
struct efi_device_path_memory {
struct efi_device_path dp;
@@ -584,6 +585,11 @@
u8 vendor_data[];
} __packed;
+struct efi_device_path_controller {
+ struct efi_device_path dp;
+ u32 controller_number;
+} __packed;
+
#define DEVICE_PATH_TYPE_ACPI_DEVICE 0x02
# define DEVICE_PATH_SUB_TYPE_ACPI_DEVICE 0x01
diff --git a/lib/efi_loader/efi_device_path_to_text.c b/lib/efi_loader/efi_device_path_to_text.c
index 9062058..4b2ade3 100644
--- a/lib/efi_loader/efi_device_path_to_text.c
+++ b/lib/efi_loader/efi_device_path_to_text.c
@@ -77,6 +77,13 @@
s += sprintf(s, ")");
break;
}
+ case DEVICE_PATH_SUB_TYPE_CONTROLLER: {
+ struct efi_device_path_controller *cdp =
+ (struct efi_device_path_controller *)dp;
+
+ s += sprintf(s, "Ctrl(0x%0x)", cdp->controller_number);
+ break;
+ }
default:
s = dp_unknown(s, dp);
break;