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authorMichał Żygowski <michal.zygowski@3mdeb.com>2019-12-02 17:02:00 +0100
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-12-04 12:28:16 +0000
commit5a6620277d6232a0d222047cbd7db414fb8585bc (patch)
tree69e63c9ccd4a4af1f058091a5a3dae02ae485e1a /src/soc/amd/common
parentf65c1e40885377a07794fc59f38fce1c9230854f (diff)
downloadcoreboot-5a6620277d6232a0d222047cbd7db414fb8585bc.tar.xz
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>
Diffstat (limited to 'src/soc/amd/common')
-rw-r--r--src/soc/amd/common/block/acpimmio/biosram.c11
-rw-r--r--src/soc/amd/common/block/include/amdblocks/biosram.h5
2 files changed, 16 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);
diff --git a/src/soc/amd/common/block/include/amdblocks/biosram.h b/src/soc/amd/common/block/include/amdblocks/biosram.h
index e2c1eb33f7..db283100d5 100644
--- a/src/soc/amd/common/block/include/amdblocks/biosram.h
+++ b/src/soc/amd/common/block/include/amdblocks/biosram.h
@@ -17,10 +17,15 @@
#include <stdint.h>
/* BiosRam Ranges at 0xfed80500 or I/O 0xcd4/0xcd5 */
+#define BIOSRAM_AP_ENTRY 0xe8 /* 8 bytes */
#define BIOSRAM_CBMEM_TOP 0xf0 /* 4 bytes */
#define BIOSRAM_UMA_SIZE 0xf4 /* 4 bytes */
#define BIOSRAM_UMA_BASE 0xf8 /* 8 bytes */
+/* Returns the bootblock C entry point for APs */
+void *get_ap_entry_ptr(void);
+/* Used by BSP to store the bootblock entry point for APs */
+void set_ap_entry_ptr(void *entry);
/* Saves the UMA size returned by AGESA */
void save_uma_size(uint32_t size);
/* Saves the UMA base address returned by AGESA */