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soc/intel/tigerlake: Use PMC IPC to disable HECI1 

This patch allows common CSE block to disable HECI1 device using PMC
IPC command `0xA9`.

Select SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC config for
Tiger Lake to disable HECI1 device using PMC IPC.

Additionally, remove dead code that deals with HECI1 disabling using
in SMM as HECI1 disabling using PMC IPC is simpler solution.

BUG=none
TEST=None

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Id5f1e3f622f65cd0f892c0dc541625bfd50d038e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61457
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Subrata Banik 2022-01-28 23:40:00 +05:30
parent ce70f0b699
commit 7ef471c67a
3 changed files with 4 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/soc/intel/tigerlake/Kconfig
View File

@ -60,6 +60,7 @@ config CPU_SPECIFIC_OPTIONS
select SOC_INTEL_COMMON_BLOCK_GPIO_IOSTANDBY
select SOC_INTEL_COMMON_BLOCK_GSPI_VERSION_2
select SOC_INTEL_COMMON_BLOCK_HDA
select SOC_INTEL_COMMON_BLOCK_HECI1_DISABLE_USING_PMC_IPC if DISABLE_HECI1_AT_PRE_BOOT
select SOC_INTEL_COMMON_BLOCK_IRQ
select SOC_INTEL_COMMON_BLOCK_MEMINIT
select SOC_INTEL_COMMON_BLOCK_PCIE_RTD3
@ -84,7 +85,6 @@ config CPU_SPECIFIC_OPTIONS
select UDELAY_TSC
select UDK_2017_BINDING
select DISPLAY_FSP_VERSION_INFO
select HECI_DISABLE_USING_SMM
config MAX_CPUS
int

3
src/soc/intel/tigerlake/finalize.c
View File

@ -12,6 +12,7 @@
#include <cpu/x86/smm.h>
#include <device/mmio.h>
#include <device/pci.h>
#include <intelblocks/cse.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/pcr.h>
#include <intelblocks/pmclib.h>
@ -64,6 +65,8 @@ static void soc_finalize(void *unused)
apm_control(APM_CNT_FINALIZE);
tbt_finalize();
sa_finalize();
if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT))
heci1_disable();
/* Indicate finalize step with post code */
post_code(POST_OS_BOOT);

14
src/soc/intel/tigerlake/smihandler.c
View File

@ -1,25 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/pci_def.h>
#include <intelblocks/cse.h>
#include <intelblocks/smihandler.h>
#include <soc/soc_chip.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
/*
* Specific SOC SMI handler during ramstage finalize phase
*
* BIOS can't make CSME function disable as is due to POSTBOOT_SAI
* restriction in place from TGP chipset. Hence create SMI Handler to
* perform CSME function disabling logic during SMM mode.
*/
void smihandler_soc_at_finalize(void)
{
if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT) && CONFIG(HECI_DISABLE_USING_SMM))
heci1_disable();
}
int smihandler_soc_disable_busmaster(pci_devfn_t dev)
{
/* Skip disabling PMC bus master to keep IO decode enabled */