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x86: fsp: graphics: Add some notes about the graphics info hob 

On some platforms (eg: Braswell), the FSP will not produce the
graphics info HOB unless you plug some cables to the display
interface (eg: HDMI) on the board. Add such notes in the FSP
video driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2017-10-18 18:20:59 -07:00
parent 4c9f4c5ee4
commit dc80d3b230
1 changed files with 4 additions and 0 deletions
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4
arch/x86/lib/fsp/fsp_graphics.c
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@ -37,6 +37,10 @@ static int save_vesa_mode(struct vesa_mode_info *vesa)
/* /*
* If there is no graphics info structure, bail out and keep * If there is no graphics info structure, bail out and keep
* running on the serial console. * running on the serial console.
*
* Note: on some platforms (eg: Braswell), the FSP will not produce
* the graphics info HOB unless you plug some cables to the display
* interface (eg: HDMI) on the board.
*/ */
if (!ginfo) { if (!ginfo) {
debug("FSP graphics hand-off block not found\n"); debug("FSP graphics hand-off block not found\n");