[coreboot-gerrit] Change in coreboot[master]: soc/intel/alderlake: Enable CSE Lite driver for ADL platform in romstage

[Sridhar Siricilla (Code Review)]

Sridhar Siricilla has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/51441 )

Change subject: soc/intel/alderlake: Enable CSE Lite driver for ADL platform in romstage
......................................................................

soc/intel/alderlake: Enable CSE Lite driver for ADL platform in romstage

This patch sets up cse_fw_sync() call in the romstage. The cse_fw_sync()
must be called after DRAM initialization.

Test=Verified on Alderlake platform

Signed-off-by: Sridhar Siricilla 
Change-Id: I6779f4a9e140deebf7f3cecd9fc5dac18813f246
---
M src/soc/intel/alderlake/romstage/romstage.c
1 file changed, 11 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/51441/1

diff --git a/src/soc/intel/alderlake/romstage/romstage.c b/src/soc/intel/alderlake/romstage/romstage.c
index cc3126b..d7435b6 100644
--- a/src/soc/intel/alderlake/romstage/romstage.c
+++ b/src/soc/intel/alderlake/romstage/romstage.c
@@ -129,6 +129,16 @@
    s3wake = pmc_fill_power_state(ps) == ACPI_S3;
    fsp_memory_init(s3wake);
    pmc_set_disb();
-	if (!s3wake)
+	if (!s3wake) {
    	save_dimm_info();
+
+		/*
+		 * cse_fw_sync() must be called after DRAM initialization as
+		 * HMRFPO_ENABLE HECI command (which is used by cse_fw_sync())
+		 * is expected to be executed after DRAM initialization.
+		 */
+		if (CONFIG(SOC_INTEL_CSE_LITE_SKU))
+			cse_fw_sync();
+
+	}
 }