diff options
Diffstat (limited to 'src/cpu/intel/haswell/haswell_init.c')
| -rw-r--r-- | src/cpu/intel/haswell/haswell_init.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c index 7c9beed6d8..dc6012bced 100644 --- a/src/cpu/intel/haswell/haswell_init.c +++ b/src/cpu/intel/haswell/haswell_init.c @@ -33,6 +33,7 @@ #include <cpu/intel/turbo.h> #include <cpu/x86/cache.h> #include <cpu/x86/name.h> +#include <cpu/x86/smm.h> #include <delay.h> #include <pc80/mc146818rtc.h> #include <northbridge/intel/haswell/haswell.h> @@ -753,6 +754,7 @@ void bsp_init_and_start_aps(struct bus *cpu_bus) int max_cpus; int num_aps; const void *microcode_patch; + void *smm_save_area; /* Perform any necessary BSP initialization before APs are brought up. * This call also allows the BSP to prepare for any secondary effects @@ -761,6 +763,9 @@ void bsp_init_and_start_aps(struct bus *cpu_bus) microcode_patch = intel_microcode_find(); + /* Save default SMM area before relocation occurs. */ + smm_save_area = backup_default_smm_area(); + /* This needs to be called after the mtrr setup so the BSP mtrrs * can be mirrored by the APs. */ if (setup_ap_init(cpu_bus, &max_cpus, microcode_patch)) { @@ -782,6 +787,9 @@ void bsp_init_and_start_aps(struct bus *cpu_bus) /* After SMM relocation a 2nd microcode load is required. */ intel_microcode_load_unlocked(microcode_patch); + /* Restore the default SMM region. */ + restore_default_smm_area(smm_save_area); + /* Enable ROM caching if option was selected. */ x86_mtrr_enable_rom_caching(); } |