On 2/5/23 20:46, Simon Glass wrote:
Add support for this to EFI in case it becomes useful. At present it just slows things down. Enable CONFIG_VIDEO_COPY to turn it on.
Signed-off-by: Simon Glass sjg@chromium.org
arch/x86/dts/efi-x86_app.dts | 1 + drivers/video/efi.c | 11 +++++++++++ 2 files changed, 12 insertions(+)
diff --git a/arch/x86/dts/efi-x86_app.dts b/arch/x86/dts/efi-x86_app.dts index a5316e2a1a7..7afa3d72d57 100644 --- a/arch/x86/dts/efi-x86_app.dts +++ b/arch/x86/dts/efi-x86_app.dts @@ -27,6 +27,7 @@ }; efi-fb { compatible = "efi-fb";
u-boot,dm-pre-reloc;};
};
diff --git a/drivers/video/efi.c b/drivers/video/efi.c index 169637c2882..9135a8e8187 100644 --- a/drivers/video/efi.c +++ b/drivers/video/efi.c @@ -207,6 +207,16 @@ err: return ret; }
+static int efi_video_bind(struct udevice *dev) +{
- struct video_uc_plat *plat = dev_get_uclass_plat(dev);
- /* Use a 16MB frame buffer in case VIDEO_COPY is enabled */
- plat->copy_size = 16 << 20;
This does not work with today's display sizes:
3840 * 2160 * 4 = 33177600 7680 * 4320 * 4 = 132710400
You have to determine the buffer size from the mode information.
Best regards
Heinrich
- return 0;
+}
- static const struct udevice_id efi_video_ids[] = { { .compatible = "efi-fb" }, { }
@@ -216,5 +226,6 @@ U_BOOT_DRIVER(efi_video) = { .name = "efi_video", .id = UCLASS_VIDEO, .of_match = efi_video_ids,
- .bind = efi_video_bind, .probe = efi_video_probe, };