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common/intel/cse: Add function to perform CSE FW update in ramstage

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When compressed ME RW blobs are used for CSE FW update, it has to be
loaded into memory to decompress. So perform CSE FW update in ramstage.

Alder Lake-N based nissa boards use compressed ME RW blobs to save on
SPI flash size. Enable CSE FW update in ramstage.

BRANCH=firmware-brya-14505.B
TEST=Perform CSE FW update on nivviks and verify upgrade/downgrade
works.

Change-Id: Ide9471146d186dca11fb020e5006eeaa01442669
Signed-off-by: Krishna P Bhat D <krishna.p.bhat.d@intel.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63761
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Krishna P Bhat D
2022-04-21 16:40:06 +05:30
committed by Felix Held
parent 7195cee17f
commit e3178a16e0
1 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/soc/intel/common/block/cse/cse_lite.c
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@@ -1,6 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi.h>
#include <arch/cpu.h>
#include <bootstate.h>
#include <console/console.h>
#include <cbfs.h>
#include <commonlib/region.h>
@@ -11,6 +13,7 @@
#include <security/vboot/vboot_common.h>
#include <security/vboot/misc.h>
#include <soc/intel/common/reset.h>
#include <timestamp.h>
#define BPDT_HEADER_SZ sizeof(struct bpdt_header)
#define BPDT_ENTRY_SZ sizeof(struct bpdt_entry)
@@ -1119,3 +1122,17 @@ void cse_fw_sync(void)
cse_trigger_vboot_recovery(CSE_LITE_SKU_RW_SWITCH_ERROR);
}
}
static void ramstage_cse_fw_sync(void *unused)
{
bool s3wake;
s3wake = acpi_get_sleep_type() == ACPI_S3;
if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_IN_RAMSTAGE) && !s3wake) {
timestamp_add_now(TS_CSE_FW_SYNC_START);
cse_fw_sync();
timestamp_add_now(TS_CSE_FW_SYNC_END);
}
}
BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_EXIT, ramstage_cse_fw_sync, NULL);