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soc/{apl,glk}: Allow to select the primary graphics device 

Allow to select the primary graphics device between the IGD and the
external PCIe GPU depending on the ONBOARD_VGA_IS_PRIMARY config.
The option sets the priority only. This means that if a high priority
is set for an external PCI device and it is not connected/not enabled,
then the device with a lower priority will be used, in our case it is
IGD.

TEST = Set PRIMARY_PCI and boot Linux on the Kontron mAL10 [1] with
the miniPCIe video adapter on the Silicon Motion SM750 controller. As
a result, the display connected to an external GPU device shows the
Tianocore logo + setup menu and the desktop.

[1] https://review.coreboot.org/c/coreboot/+/39133

Change-Id: Idcd117217cf412ee0722aff52db4b3c8ec2a226c
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39374
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
This commit is contained in:
Maxim Polyakov 2020-06-20 17:26:21 +03:00 committed by Nico Huber
parent 6aa0708bd9
commit 1a4496e79f
1 changed files with 14 additions and 0 deletions
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14
src/soc/intel/apollolake/romstage.c
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@ -229,6 +229,19 @@ static void check_full_retrain(const FSPM_UPD *mupd)
}
}
static void soc_gpu_init_params(FSPM_UPD *mupd)
{
enum {
GPU_PRIMARY_IGD = 2,
GPU_PRIMARY_PCI = 3,
};
/* Select primary GPU device */
if (CONFIG(ONBOARD_VGA_IS_PRIMARY) && is_devfn_enabled(SA_DEVFN_IGD))
mupd->FspmConfig.PrimaryVideoAdaptor = GPU_PRIMARY_IGD;
else
mupd->FspmConfig.PrimaryVideoAdaptor = GPU_PRIMARY_PCI;
}
static void soc_memory_init_params(FSPM_UPD *mupd)
{
#if CONFIG(SOC_INTEL_GEMINILAKE)
@ -268,6 +281,7 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
check_full_retrain(mupd);
fill_console_params(mupd);
soc_gpu_init_params(mupd);
if (CONFIG(SOC_INTEL_GEMINILAKE))
soc_memory_init_params(mupd);