soc/amd/cezanne: Move APOB update into ramstage

There is no technical reason this needs to be done in romstage. Moving
it into ramstage allow us (in future CLs) to use threads to pre-load
the apob from SPI.

BUG=b:179699789
TEST=Boot and Ezkinil and Guybrush and verify APOB update still work

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I960437ff4400645de5a3e7447fcdbc52de85943e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56227
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

5 files changed, 4 insertions, 6 deletions

diff --git a/src/soc/amd/cezanne/romstage.c b/src/soc/amd/cezanne/romstage.c
index b64fb4bbe5..9e863c3966 100644
--- a/src/soc/amd/cezanne/romstage.c
+++ b/src/soc/amd/cezanne/romstage.c
@@ -2,7 +2,6 @@
 
 #include <acpi/acpi.h>
 #include <amdblocks/acpimmio.h>
-#include <amdblocks/apob_cache.h>
 #include <amdblocks/memmap.h>
 #include <amdblocks/pmlib.h>
 #include <arch/cpu.h>
@@ -25,7 +24,6 @@ asmlinkage void car_stage_entry(void)
 	fill_chipset_state();
 
 	fsp_memory_init(acpi_is_wakeup_s3());
-	soc_update_apob_cache();
 
 	/* Fixup settings FSP-M should not be changing */
 	fch_disable_legacy_dma_io();
diff --git a/src/soc/amd/common/block/apob/Makefile.inc b/src/soc/amd/common/block/apob/Makefile.inc
index 16baf81813..6e217df648 100644
--- a/src/soc/amd/common/block/apob/Makefile.inc
+++ b/src/soc/amd/common/block/apob/Makefile.inc
@@ -1,3 +1,4 @@
 ifeq ($(CONFIG_SOC_AMD_COMMON_BLOCK_APOB),y)
 romstage-y += apob_cache.c
+ramstage-y += apob_cache.c
 endif # CONFIG_SOC_AMD_COMMON_BLOCK_APOB
diff --git a/src/soc/amd/common/block/apob/apob_cache.c b/src/soc/amd/common/block/apob/apob_cache.c
index 34d54727fc..c41627b7ac 100644
--- a/src/soc/amd/common/block/apob/apob_cache.c
+++ b/src/soc/amd/common/block/apob/apob_cache.c
@@ -4,6 +4,7 @@
 #include <amdblocks/apob_cache.h>
 #include <assert.h>
 #include <boot_device.h>
+#include <bootstate.h>
 #include <commonlib/region.h>
 #include <console/console.h>
 #include <fmap.h>
@@ -96,7 +97,7 @@ static void *get_apob_from_nv_region(struct region *region)
 }
 
 /* Save APOB buffer to flash */
-void soc_update_apob_cache(void)
+static void soc_update_apob_cache(void *unused)
 {
 	struct apob_base_header *apob_rom;
 	struct region_device write_rdev;
@@ -183,3 +184,4 @@ void *soc_fill_apob_cache(void)
 	 */
 	return get_apob_nv_address();
 }
+BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_EXIT, soc_update_apob_cache, NULL);
diff --git a/src/soc/amd/common/block/include/amdblocks/apob_cache.h b/src/soc/amd/common/block/include/amdblocks/apob_cache.h
index 1d29ddc279..79228e5de2 100644
--- a/src/soc/amd/common/block/include/amdblocks/apob_cache.h
+++ b/src/soc/amd/common/block/include/amdblocks/apob_cache.h
@@ -4,6 +4,5 @@
 #define AMD_BLOCK_APOB_CACHE_H
 
 void *soc_fill_apob_cache(void);
-void soc_update_apob_cache(void);
 
 #endif /* AMD_BLOCK_APOB_CACHE_H */
diff --git a/src/soc/amd/picasso/romstage.c b/src/soc/amd/picasso/romstage.c
index d3ceec587f..197241084f 100644
--- a/src/soc/amd/picasso/romstage.c
+++ b/src/soc/amd/picasso/romstage.c
@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <acpi/acpi.h>
-#include <amdblocks/apob_cache.h>
 #include <amdblocks/memmap.h>
 #include <amdblocks/pmlib.h>
 #include <arch/cpu.h>
@@ -27,7 +26,6 @@ asmlinkage void car_stage_entry(void)
 
 	post_code(0x43);
 	fsp_memory_init(acpi_is_wakeup_s3());
-	soc_update_apob_cache();
 
 	memmap_stash_early_dram_usage();