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soc/intel/pantherlake: Update IGD stolen memory size

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This commit increases the default pre-allocated IGD stolen memory size
from 64MB to 128MB in FSP-M parameters. This ensures sufficient memory
is allocated for higher resolution displays and graphics-intensive
early-boot tasks on Panther Lake platforms.

BUG=b:481209815
TEST=Able to build and boot google/ruby.

Change-Id: Idd3f1bcb9cbb27adc18a31c0dd5952e901ecf5eb
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/91126
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Subrata Banik 2026-02-09 13:32:53 +05:30
commit 3dc9427bec
1 changed files with 2 additions and 2 deletions
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4
src/soc/intel/pantherlake/romstage/fsp_params.c
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@ -41,8 +41,8 @@ static void fill_fspm_igd_params(FSP_M_CONFIG *m_cfg,
};
m_cfg->InternalGraphics = !CONFIG(SOC_INTEL_DISABLE_IGD) && is_devfn_enabled(PCI_DEVFN_IGD);
if (m_cfg->InternalGraphics) {
/* IGD is enabled, set IGD stolen size to 64MB. */
m_cfg->IgdDvmt50PreAlloc = IGD_SM_64MB;
/* IGD is enabled, set IGD stolen size to 128MB. */
m_cfg->IgdDvmt50PreAlloc = IGD_SM_128MB;
/* DP port config */
m_cfg->DdiPortAConfig = config->ddi_port_A_config;
m_cfg->DdiPortBConfig = config->ddi_port_B_config;