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video: Fix video on coreboot with the copy buffer 

The copy buffer, if enabled, prevents booting from coreboot correctly,
since no memory is allocated for it. Allow it to fall back to disabled
in this situation. This ensures that a console is displayed, even if
it is slow.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-03-15 18:00:26 +13:00
parent 907bcd3a33
commit bcac36185b
1 changed files with 2 additions and 5 deletions
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7
drivers/pci/pci_rom.c
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@ -349,13 +349,10 @@ int vbe_setup_video_priv(struct vesa_mode_info *vesa,
} }
/* Use double buffering if enabled */ /* Use double buffering if enabled */
if (IS_ENABLED(CONFIG_VIDEO_COPY)) { if (IS_ENABLED(CONFIG_VIDEO_COPY) && plat->base)
if (!plat->base)
return log_msg_ret("copy", -ENFILE);
plat->copy_base = vesa->phys_base_ptr; plat->copy_base = vesa->phys_base_ptr;
} else { else
plat->base = vesa->phys_base_ptr; plat->base = vesa->phys_base_ptr;
}
log_debug("base = %lx, copy_base = %lx\n", plat->base, plat->copy_base); log_debug("base = %lx, copy_base = %lx\n", plat->base, plat->copy_base);
plat->size = vesa->bytes_per_scanline * vesa->y_resolution; plat->size = vesa->bytes_per_scanline * vesa->y_resolution;