[coreboot-gerrit] [M] Change in libgfxinit[main]: gma registers: Allow to specify an offset for display registers

[Angel Pons (Code Review)]

Attention is currently required from: Angel Pons.

Hello Nico Huber,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/libgfxinit/+/44786?usp=email

to look at the new patch set (#8).

Change subject: gma registers: Allow to specify an offset for display registers
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gma registers: Allow to specify an offset for display registers

Certain platforms, namely Bay Trail and Braswell, have the display
engine registers at an offset relative to GTTMMADR base. Apart from
that, the registers are rather similar to the ones on GMCH platforms.

Allow platforms to specify at which offset within GTTMM the display
registers are located. Use zero for all currently-supported platforms.
Add several registers that will need to be remapped as an example.

Change-Id: Id5497a23776e9aa9e2fd5ca0479030cb8e55712f
Signed-off-by: Angel Pons 
---
M common/hw-gfx-gma-config.ads.template
M common/hw-gfx-gma-registers.adb
2 files changed, 55 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/libgfxinit refs/changes/86/44786/8