On Thu, 4 Jan 2024 at 16:25, Bin Meng bmeng@tinylab.org wrote:
From: Bin Meng bmeng.cn@gmail.com
With latest coreboot (e.g.: v4.22.01), the instructions to enable graphics support has changed. Refresh the doc.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
doc/board/coreboot/coreboot.rst | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org
diff --git a/doc/board/coreboot/coreboot.rst b/doc/board/coreboot/coreboot.rst index f2c6452b5b..8408461617 100644 --- a/doc/board/coreboot/coreboot.rst +++ b/doc/board/coreboot/coreboot.rst @@ -32,10 +32,9 @@ of _x86boot_start (in arch/x86/cpu/start.S). If you want to use ELF as the coreboot payload, change U-Boot configuration to use CONFIG_OF_EMBED instead of CONFIG_OF_SEPARATE.
-To enable video you must enable these options in coreboot: +To enable video you must enable CONFIG_GENERIC_LINEAR_FRAMEBUFFER in coreboot:
- Set framebuffer graphics resolution (1280x1024 32k-color (1:5:5))
- Keep VESA framebuffer
- Devices->Display->Framebuffer mode->Linear "high resolution" framebuffer
At present it seems that for Minnowboard Max, coreboot does not pass through the video information correctly (it always says the resolution is 0x0). This @@ -184,9 +183,9 @@ boot as a coreboot payload, based on a known-good build of coreboot.
To update the `coreboot.rom` file which is used:
-#. Build coreboot with `CONFIG_LINEAR_FRAMEBUFFER=y`. If using `make menuconfig`
- this is under
- `Devices ->Display->Framebuffer mode->Linear "high resolution" framebuffer`.
+#. Build coreboot with `CONFIG_GENERIC_LINEAR_FRAMEBUFFER=y`. If using
- `make menuconfig`, this is under
- `Devices->Display->Framebuffer mode->Linear "high resolution" framebuffer`.
#. Compress the resulting `coreboot.rom`::
-- 2.34.1