summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorArthur Heymans <arthur@aheymans.xyz>2020-08-09 16:01:26 +0200
committerPatrick Georgi <pgeorgi@google.com>2020-09-29 05:59:59 +0000
commit2f7d4c362ce75803f3df55e401e8831275f18c41 (patch)
tree88450fbf9124b35cf283664395f3e8f6235debb7
parentac0d2ee2de005968b20f421a0ea97edcbea3ea19 (diff)
downloadcoreboot-2f7d4c362ce75803f3df55e401e8831275f18c41.tar.xz
cpu/x86/smm/smihandler.c: Implement smm_get_save_state()
This will be used in common save_state handling code. Change-Id: I4cb3180ec565cee931606e8a8f55b78fdb8932ae Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44320 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/cpu/x86/smm/smihandler.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/cpu/x86/smm/smihandler.c b/src/cpu/x86/smm/smihandler.c
index 99594beae7..077fa8db8f 100644
--- a/src/cpu/x86/smm/smihandler.c
+++ b/src/cpu/x86/smm/smihandler.c
@@ -128,6 +128,24 @@ uint32_t smm_revision(void)
return *(uint32_t *)(SMM_BASE + SMM_ENTRY_OFFSET * 2 - SMM_REVISION_OFFSET_FROM_TOP);
}
+void *smm_get_save_state(int cpu)
+{
+ switch (smm_revision()) {
+ case 0x00030002:
+ case 0x00030007:
+ return smm_save_state(SMM_BASE, SMM_LEGACY_ARCH_OFFSET, cpu);
+ case 0x00030100:
+ return smm_save_state(SMM_BASE, SMM_EM64T100_ARCH_OFFSET, cpu);
+ case 0x00030101: /* SandyBridge, IvyBridge, and Haswell */
+ return smm_save_state(SMM_BASE, SMM_EM64T101_ARCH_OFFSET, cpu);
+ case 0x00020064:
+ case 0x00030064:
+ return smm_save_state(SMM_BASE, SMM_AMD64_ARCH_OFFSET, cpu);
+ }
+
+ return NULL;
+}
+
bool smm_region_overlaps_handler(const struct region *r)
{
const struct region r_smm = {SMM_BASE, SMM_DEFAULT_SIZE};