[S] Change in coreboot[main]: soc/amd/genoa: Implement romstage

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/76514?usp=email )

Change subject: soc/amd/genoa: Implement romstage
......................................................................

soc/amd/genoa: Implement romstage

The only thing romstage needs to do is find cbmem_top.

TESTED: reaches ramstage.

Signed-off-by: Arthur Heymans 
Change-Id: Ic2837c4a2b0ec8dcd9dd99602f9c073999c36139
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76514
Reviewed-by: Matt DeVillier 
Tested-by: build bot (Jenkins) 
Reviewed-by: Varshit Pandya 
---
M src/soc/amd/genoa/romstage.c
1 file changed, 9 insertions(+), 3 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Matt DeVillier: Looks good to me, approved
  Varshit Pandya: Looks good to me, approved

diff --git a/src/soc/amd/genoa/romstage.c b/src/soc/amd/genoa/romstage.c
index f4c5584..66a2140 100644
--- a/src/soc/amd/genoa/romstage.c
+++ b/src/soc/amd/genoa/romstage.c
@@ -1,10 +1,16 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <amdblocks/post_codes.h>
+#include <amdblocks/memmap.h>
+#include <cbmem.h>
+#include <program_loading.h>
 #include <romstage_common.h>
-#include <halt.h>

void __noreturn romstage_main(void)
 {
-	/* Needed for __noreturn */
-	halt();
+	post_code(POSTCODE_ROMSTAGE_MAIN);
+
+	cbmem_initialize_empty();
+	memmap_stash_early_dram_usage();
+	run_ramstage();
 }