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nb/intel/sandybridge: Only run DMI recipe on Ivy Bridge 

Reference code does not run any DMI recipe for Sandy Bridge. Create a
helper function and exit early for Sandy Bridge. The CPUID value will
be used in a follow-up, since DMI setup has stepping-specific steps.

Change-Id: I5d7afb1ef516f447b4988dd5c2f0295771d5888e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48413
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Angel Pons 2020-12-07 15:25:36 +01:00 committed by Patrick Georgi
parent 77516ca792
commit 64b88623cb
1 changed files with 14 additions and 1 deletions
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15
src/northbridge/intel/sandybridge/early_dmi.c
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@ -1,13 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0-only */ /* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/cpu.h>
#include <console/console.h> #include <console/console.h>
#include <cpu/intel/model_206ax/model_206ax.h>
#include <northbridge/intel/sandybridge/sandybridge.h> #include <northbridge/intel/sandybridge/sandybridge.h>
#include <southbridge/intel/bd82x6x/pch.h> #include <southbridge/intel/bd82x6x/pch.h>
void early_init_dmi(void) static void dmi_recipe(void)
{ {
const u32 cpuid = cpu_get_cpuid();
int i; int i;
/* The DMI recipe is only needed on Ivy Bridge */
if (!IS_IVY_CPU(cpuid))
return;
for (i = 0; i < 2; i++) { for (i = 0; i < 2; i++) {
DMIBAR32(0x0914 + (i << 5)) |= (1 << 31); DMIBAR32(0x0914 + (i << 5)) |= (1 << 31);
} }
@ -158,6 +166,11 @@ void early_init_dmi(void)
DMIBAR32(DMIL0SLAT); // !!! = 0x00c26460 DMIBAR32(DMIL0SLAT); // !!! = 0x00c26460
DMIBAR32(DMIL0SLAT) = 0x00c2403c; DMIBAR32(DMIL0SLAT) = 0x00c2403c;
}
void early_init_dmi(void)
{
dmi_recipe();
early_pch_init_native_dmi_pre(); early_pch_init_native_dmi_pre();