efi_loader: GOP: Add 30bpp support

Provide correct framebuffer information for 30bpp modes.
Signed-off-by: NMark Kettenis <kettenis@openbsd.org>

lib/efi_loader/efi_gop.c

@@ -432,7 +432,7 @@ efi_status_t EFIAPI gop_blt(struct efi_gop *this, struct efi_gop_pixel *buffer,
 efi_status_t efi_gop_register(void)
 {
 	struct efi_gop_obj *gopobj;
-	u32 bpix, col, row;
+	u32 bpix, format, col, row;
 	u64 fb_base, fb_size;
 	void *fb;
 	efi_status_t ret;
@@ -449,6 +449,7 @@ efi_status_t efi_gop_register(void)
 
 	priv = dev_get_uclass_priv(vdev);
 	bpix = priv->bpix;
+	format = priv->format;
 	col = video_get_xsize(vdev);
 	row = video_get_ysize(vdev);
 	fb_base = (uintptr_t)priv->fb;
@@ -458,6 +459,7 @@ efi_status_t efi_gop_register(void)
 	int line_len;
 
 	bpix = panel_info.vl_bpix;
+	format = VIDEO_UNKNOWN;
 	col = panel_info.vl_col;
 	row = panel_info.vl_row;
 	fb_base = gd->fb_base;
@@ -517,7 +519,15 @@ efi_status_t efi_gop_register(void)
 	if (bpix == LCD_COLOR32)
 #endif
 	{
-		gopobj->info.pixel_format = EFI_GOT_BGRA8;
+		if (format == VIDEO_X2R10G10B10) {
+			gopobj->info.pixel_format = EFI_GOT_BITMASK;
+			gopobj->info.pixel_bitmask[0] = 0x3ff00000; /* red */
+			gopobj->info.pixel_bitmask[1] = 0x000ffc00; /* green */
+			gopobj->info.pixel_bitmask[2] = 0x000003ff; /* blue */
+			gopobj->info.pixel_bitmask[3] = 0xc0000000; /* reserved */
+		} else {
+			gopobj->info.pixel_format = EFI_GOT_BGRA8;
+		}
 	} else {
 		gopobj->info.pixel_format = EFI_GOT_BITMASK;
 		gopobj->info.pixel_bitmask[0] = 0xf800; /* red */