From b4b9eb399ef2f5539afce6e43b49d4cf1613ae9e Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Thu, 13 Feb 2014 10:26:18 -0600 Subject: x86: provide infrastructure to backup default SMM region Certain CPUs require the default SMM region to be backed up on resume after a suspend. The reason is that in order to relocate the SMM region the default SMM region has to be used. As coreboot is unaware of how that memory is used it needs to be backed up. Therefore provide a common method for doing this. Change-Id: I65fe1317dc0b2203cb29118564fdba995770ffea Signed-off-by: Aaron Durbin Reviewed-on: http://review.coreboot.org/5216 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/include/cpu/x86/smm.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/include/cpu/x86') diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h index bda1413938..3ab43ff2ce 100644 --- a/src/include/cpu/x86/smm.h +++ b/src/include/cpu/x86/smm.h @@ -571,4 +571,8 @@ int smm_load_module(void *smram, int size, struct smm_loader_params *params); #endif /* __SMM__ */ #endif /* CONFIG_SMM_MODULES */ +/* Backup and restore default SMM region. */ +void *backup_default_smm_area(void); +void restore_default_smm_area(void *smm_save_area); + #endif -- cgit v1.2.3