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| author | Jeremy Compostella <jeremy.compostella@intel.com> | 2022-12-01 15:55:06 -0700 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2023-01-12 02:54:09 +0000 |
| commit | 47f154c8e593be37ee298e976a37012f44c2a247 (patch) | |
| tree | 46831caa6f1ea5920d63d003ff7ca889a7b02d0a /src/drivers/intel | |
| parent | ca025203a84f11f365792919e320e1f57c0a5c50 (diff) | |
| download | coreboot-47f154c8e593be37ee298e976a37012f44c2a247.tar.gz coreboot-47f154c8e593be37ee298e976a37012f44c2a247.tar.bz2 coreboot-47f154c8e593be37ee298e976a37012f44c2a247.zip | |
soc/intel/common/block: Add Intel VGA early graphics support
This patch introduces an early graphics driver which can be used in
romstage in cache-as-ram mode. The implementation relies on
`libgfxinit' and provide VGA text mode support.
SoCs wanting to take advantage of this driver must implement the
`early_graphics_soc_panel_init' function to set the panel power
sequence timing parameters.
BUG=b:252792591
BRANCH=firmware-brya-14505.B
TEST=Graphics bring up observed on skolas with extra patches
Change-Id: Ie4ad1215e5fadd0adc1271b6bd6ddb0ea258cb5b
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70299
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Maulik Vaghela <maulikvaghela@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/intel')
| -rw-r--r-- | src/drivers/intel/gma/gma-gfx_init.ads | 3 | ||||
| -rw-r--r-- | src/drivers/intel/gma/hires_fb/gma-gfx_init.adb | 13 | ||||
| -rw-r--r-- | src/drivers/intel/gma/libgfxinit.h | 1 | ||||
| -rw-r--r-- | src/drivers/intel/gma/text_fb/gma-gfx_init.adb | 13 |
4 files changed, 30 insertions, 0 deletions
diff --git a/src/drivers/intel/gma/gma-gfx_init.ads b/src/drivers/intel/gma/gma-gfx_init.ads index 4998d3312e66..fc45672ee013 100644 --- a/src/drivers/intel/gma/gma-gfx_init.ads +++ b/src/drivers/intel/gma/gma-gfx_init.ads @@ -11,6 +11,9 @@ is procedure gfxinit (lightup_ok : out Interfaces.C.int); pragma Export (C, gfxinit, "gma_gfxinit"); + procedure gfxstop (stop_ok : out Interfaces.C.int); + pragma Export (C, gfxstop, "gma_gfxstop"); + ---------------------------------------------------------------------------- function c_fb_add_framebuffer_info diff --git a/src/drivers/intel/gma/hires_fb/gma-gfx_init.adb b/src/drivers/intel/gma/hires_fb/gma-gfx_init.adb index b213030b2bb7..83516af171d5 100644 --- a/src/drivers/intel/gma/hires_fb/gma-gfx_init.adb +++ b/src/drivers/intel/gma/hires_fb/gma-gfx_init.adb @@ -97,4 +97,17 @@ is end if; end gfxinit; + procedure gfxstop (stop_ok : out Interfaces.C.int) + is + success : boolean; + begin + HW.GFX.GMA.Initialize (Clean_State => True, + Success => success); + if success then + stop_ok := 1; + else + stop_ok := 0; + end if; + end gfxstop; + end GMA.GFX_Init; diff --git a/src/drivers/intel/gma/libgfxinit.h b/src/drivers/intel/gma/libgfxinit.h index 9a7e1c6f9087..3270b91752b3 100644 --- a/src/drivers/intel/gma/libgfxinit.h +++ b/src/drivers/intel/gma/libgfxinit.h @@ -17,6 +17,7 @@ enum { }; void gma_gfxinit(int *lightup_ok); +void gma_gfxstop(int *stop_ok); int gma_read_edid(unsigned char edid[], int port); #endif diff --git a/src/drivers/intel/gma/text_fb/gma-gfx_init.adb b/src/drivers/intel/gma/text_fb/gma-gfx_init.adb index d27385247e8e..da1e609b79ff 100644 --- a/src/drivers/intel/gma/text_fb/gma-gfx_init.adb +++ b/src/drivers/intel/gma/text_fb/gma-gfx_init.adb @@ -56,4 +56,17 @@ is end if; end gfxinit; + procedure gfxstop (stop_ok : out Interfaces.C.int) + is + success : boolean; + begin + HW.GFX.GMA.Initialize (Clean_State => True, + Success => success); + if success then + stop_ok := 1; + else + stop_ok := 0; + end if; + end gfxstop; + end GMA.GFX_Init; |