bootvx: x86: Make VxWorks EFI console driver happy
When booting from EFI BIOS, VxWorks bootloader stores the EFI GOP framebuffer info at a pre-defined offset @ 0x6100. When VxWorks kernel boots up, its EFI console driver tries to find such a block and if the signature matches, the framebuffer information will be used to initialize the driver. However it is not necessary to prepare an EFI environment for VxWorks's EFI console driver to function (eg: EFI loader in U-Boot). If U-Boot has already initialized the graphics card and set it to a VESA mode that is compatible with EFI GOP, we can simply prepare such a block for VxWorks. Signed-off-by: NBin Meng <bmeng.cn@gmail.com> Reviewed-by: NSimon Glass <sjg@chromium.org>
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