amdblocks/acpimmio: add common functions for AP entry

Move the stoneyridge implementation of get/set AP entry to the common
block.

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I9c73940ffe5f735dcd844911361355c384f617b1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37416
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/soc/amd/common/block/acpimmio/biosram.c b/src/soc/amd/common/block/acpimmio/biosram.c
index f0a1257fb9..e33f02d02c 100644
--- a/src/soc/amd/common/block/acpimmio/biosram.c
+++ b/src/soc/amd/common/block/acpimmio/biosram.c
@@ -15,6 +15,17 @@
 #include <amdblocks/acpimmio.h>
 #include <amdblocks/biosram.h>
 
+void *get_ap_entry_ptr(void)
+{
+	return (void *)biosram_read32(BIOSRAM_AP_ENTRY);
+}
+
+void set_ap_entry_ptr(void *entry)
+{
+	biosram_write32(BIOSRAM_AP_ENTRY, (uintptr_t)entry);
+}
+
+
 void backup_top_of_low_cacheable(uintptr_t ramtop)
 {
 	biosram_write32(BIOSRAM_CBMEM_TOP, ramtop);