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-rw-r--r--src/soc/intel/baytrail/smihandler.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/smihandler.c b/src/soc/intel/baytrail/smihandler.c
index 3a096e3d80..b8226c29dd 100644
--- a/src/soc/intel/baytrail/smihandler.c
+++ b/src/soc/intel/baytrail/smihandler.c
@@ -24,6 +24,7 @@
#include <elog.h>
#include <halt.h>
#include <spi-generic.h>
+#include <smmstore.h>
#include <soc/iosf.h>
#include <soc/pci_devs.h>
@@ -282,6 +283,26 @@ static void soc_legacy(void)
LPSS_ACPI_MODE_DISABLE(SPI);
}
+static void southbridge_smi_store(void)
+{
+ u8 sub_command, ret;
+ em64t100_smm_state_save_area_t *io_smi =
+ smi_apmc_find_state_save(APM_CNT_SMMSTORE);
+ uint32_t reg_ebx;
+
+ if (!io_smi)
+ return;
+ /* Command and return value in EAX */
+ sub_command = (io_smi->rax >> 8) & 0xff;
+
+ /* Parameter buffer in EBX */
+ reg_ebx = io_smi->rbx;
+
+ /* drivers/smmstore/smi.c */
+ ret = smmstore_exec(sub_command, (void *)reg_ebx);
+ io_smi->rax = ret;
+}
+
static void southbridge_smi_apmc(void)
{
uint8_t reg8;
@@ -334,6 +355,10 @@ static void southbridge_smi_apmc(void)
case APM_CNT_LEGACY:
soc_legacy();
break;
+ case APM_CNT_SMMSTORE:
+ if (CONFIG(SMMSTORE))
+ southbridge_smi_store();
+ break;
}
mainboard_smi_apmc(reg8);