[coreboot-gerrit] Change in coreboot[master]: soc/intel/denverton_ns: Hook up SMMSTORE

[Angel Pons (Code Review)]

Angel Pons has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/47450 )

Change subject: soc/intel/denverton_ns: Hook up SMMSTORE
......................................................................

soc/intel/denverton_ns: Hook up SMMSTORE

UNTESTED.

Change-Id: I996c7bf3b510a8f0a9d1bb7d945ce777b646448e
Signed-off-by: Angel Pons 
---
M src/soc/intel/denverton_ns/smihandler.c
1 file changed, 25 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/50/47450/1

diff --git a/src/soc/intel/denverton_ns/smihandler.c b/src/soc/intel/denverton_ns/smihandler.c
index 5eecba7..cae8b9b 100644
--- a/src/soc/intel/denverton_ns/smihandler.c
+++ b/src/soc/intel/denverton_ns/smihandler.c
@@ -10,6 +10,7 @@
 #include <cpu/intel/em64t100_save_state.h>
 #include <device/pci_def.h>
 #include <intelblocks/fast_spi.h>
+#include <smmstore.h>
 #include <spi-generic.h>
 #include <soc/iomap.h>
 #include <soc/soc_util.h>
@@ -197,6 +198,26 @@
    	fast_spi_init();
 }

+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;
@@ -245,6 +266,10 @@
    		printk(BIOS_DEBUG, "SMI#: Setting GNVS to %p\n", gnvs);
    	}
    	break;
+	case APM_CNT_SMMSTORE:
+		if (CONFIG(SMMSTORE))
+			southbridge_smi_store();
+		break;
    }

mainboard_smi_apmc(reg8);