From 556630336244941efcaa6750d954da6dbb0ce72d Mon Sep 17 00:00:00 2001
From: Johnny Lin <johnny_lin@wiwynn.com>
Date: Thu, 14 Nov 2019 14:55:04 +0800
Subject: [PATCH] drivers/ipmi: Add IPMI get system GUID support

Tested on OCP Mono Lake.

Change-Id: I541a23341ccce3d45239babb3f0a8a8c8542b226
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37085
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/drivers/ipmi/ipmi_ops.c | 26 ++++++++++++++++++++++++++
 src/drivers/ipmi/ipmi_ops.h |  8 ++++++++
 2 files changed, 34 insertions(+)

diff --git a/src/drivers/ipmi/ipmi_ops.c b/src/drivers/ipmi/ipmi_ops.c
index 784daeb1fb..8a189bdbe1 100644
--- a/src/drivers/ipmi/ipmi_ops.c
+++ b/src/drivers/ipmi/ipmi_ops.c
@@ -16,6 +16,7 @@
 
 #include <console/console.h>
 #include "ipmi_ops.h"
+#include <string.h>
 
 enum cb_err ipmi_init_and_start_bmc_wdt(const int port, uint16_t countdown,
 				uint8_t action)
@@ -104,3 +105,28 @@ enum cb_err ipmi_stop_bmc_wdt(const int port)
 
 	return CB_SUCCESS;
 }
+
+enum cb_err ipmi_get_system_guid(const int port, uint8_t *uuid)
+{
+	int ret;
+	struct ipmi_get_system_guid_rsp rsp;
+
+	if (uuid == NULL) {
+		printk(BIOS_ERR, "%s failed, null pointer parameter\n",
+			 __func__);
+		return CB_ERR;
+	}
+
+	ret = ipmi_kcs_message(port, IPMI_NETFN_APPLICATION, 0x0,
+			IPMI_BMC_GET_SYSTEM_GUID, NULL, 0,
+			(unsigned char *) &rsp, sizeof(rsp));
+
+	if (ret < sizeof(struct ipmi_rsp) || rsp.resp.completion_code) {
+		printk(BIOS_ERR, "IPMI: %s command failed (ret=%d resp=0x%x)\n",
+			 __func__, ret, rsp.resp.completion_code);
+		return CB_ERR;
+	}
+
+	memcpy(uuid, rsp.data, 16);
+	return CB_SUCCESS;
+}
diff --git a/src/drivers/ipmi/ipmi_ops.h b/src/drivers/ipmi/ipmi_ops.h
index f293075e90..77fc727cc8 100644
--- a/src/drivers/ipmi/ipmi_ops.h
+++ b/src/drivers/ipmi/ipmi_ops.h
@@ -21,6 +21,7 @@
 #define IPMI_BMC_RESET_WDG_TIMER 0x22
 #define IPMI_BMC_SET_WDG_TIMER 0x24
 #define IPMI_BMC_GET_WDG_TIMER 0x25
+#define IPMI_BMC_GET_SYSTEM_GUID 0x37
 
 /* BMC watchdog timeout action */
 enum ipmi_bmc_timeout_action_type {
@@ -44,6 +45,10 @@ struct ipmi_wdt_rsp {
 	uint16_t present_countdown_val;
 } __packed;
 
+struct ipmi_get_system_guid_rsp {
+	struct ipmi_rsp resp;
+	uint8_t data[16];
+} __packed;
 /*
  * Initialize and start BMC FRB2 watchdog timer with the
  * provided timer countdown and action values.
@@ -54,4 +59,7 @@ enum cb_err ipmi_init_and_start_bmc_wdt(const int port, uint16_t countdown,
 /* Returns CB_SUCCESS on success and CB_ERR if an error occurred */
 enum cb_err ipmi_stop_bmc_wdt(const int port);
 
+/* IPMI get BMC system GUID and store it to parameter uuid.
+ * Returns CB_SUCCESS on success and CB_ERR if an error occurred */
+enum cb_err ipmi_get_system_guid(const int port, uint8_t *uuid);
 #endif