efi_loader: SetMode() must blank screen
EFI_GRAPHICS_OUTPUT_PROTOCOL.SetMode() must blank the screen.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/lib/efi_loader/efi_gop.c b/lib/efi_loader/efi_gop.c
index 2385c0f..c1a814c 100644
--- a/lib/efi_loader/efi_gop.c
+++ b/lib/efi_loader/efi_gop.c
@@ -62,18 +62,6 @@
return EFI_EXIT(ret);
}
-static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
-{
- efi_status_t ret = EFI_SUCCESS;
-
- EFI_ENTRY("%p, %x", this, mode_number);
-
- if (mode_number)
- ret = EFI_UNSUPPORTED;
-
- return EFI_EXIT(ret);
-}
-
static __always_inline struct efi_gop_pixel efi_vid16_to_blt_col(u16 vid)
{
struct efi_gop_pixel blt = {
@@ -322,6 +310,44 @@
dx, dy, width, height, delta, vid_bpp);
}
+/**
+ * gop_set_mode() - set graphical output mode
+ *
+ * This function implements the SetMode() service.
+ *
+ * See the Unified Extensible Firmware Interface (UEFI) specification for
+ * details.
+ *
+ * @this: the graphical output protocol
+ * @model_number: the mode to be set
+ * Return: status code
+ */
+static efi_status_t EFIAPI gop_set_mode(struct efi_gop *this, u32 mode_number)
+{
+ struct efi_gop_obj *gopobj;
+ struct efi_gop_pixel buffer = {0, 0, 0, 0};
+ efi_uintn_t vid_bpp;
+ efi_status_t ret = EFI_SUCCESS;
+
+ EFI_ENTRY("%p, %x", this, mode_number);
+
+ if (!this) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ if (mode_number) {
+ ret = EFI_UNSUPPORTED;
+ goto out;
+ }
+ gopobj = container_of(this, struct efi_gop_obj, ops);
+ vid_bpp = gop_get_bpp(this);
+ ret = gop_blt_video_fill(this, &buffer, EFI_BLT_VIDEO_FILL, 0, 0, 0, 0,
+ gopobj->info.width, gopobj->info.height, 0,
+ vid_bpp);
+out:
+ return EFI_EXIT(ret);
+}
+
/*
* Copy rectangle.
*