3 files changed, 74 insertions, 0 deletions
diff --git a/src/mainboard/ocp/deltalake/ipmi.c b/src/mainboard/ocp/deltalake/ipmi.c
index 9c5a0c0cfe..790038f380 100644
--- a/src/mainboard/ocp/deltalake/ipmi.c
+++ b/src/mainboard/ocp/deltalake/ipmi.c
@@ -129,3 +129,51 @@ void init_frb2_wdt(void)
 		ipmi_stop_bmc_wdt(CONFIG_BMC_KCS_BASE);
 	}
 }
+
+enum cb_err ipmi_set_cmos_clear(void)
+{
+	int ret;
+
+	struct ipmi_oem_rsp {
+		struct ipmi_rsp resp;
+		struct boot_order data;
+	} __packed;
+
+	struct ipmi_oem_rsp rsp;
+	struct boot_order req;
+
+	/* IPMI OEM get bios boot order command to check if the valid bit and
+	   the CMOS clear bit are both set from the response BootMode byte. */
+
+	ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0,
+			IPMI_OEM_GET_BIOS_BOOT_ORDER,
+			NULL, 0,
+			(unsigned char *) &rsp, sizeof(rsp));
+
+	if (ret < sizeof(struct ipmi_rsp) || rsp.resp.completion_code) {
+		printk(BIOS_ERR, "IPMI: %s command failed (read ret=%d resp=0x%x)\n",
+			__func__, ret, rsp.resp.completion_code);
+		return CB_ERR;
+	}
+
+	if (!IS_CMOS_AND_VALID_BIT(rsp.data.boot_mode)) {
+		req = rsp.data;
+		SET_CMOS_AND_VALID_BIT(req.boot_mode);
+		ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0,
+				IPMI_OEM_SET_BIOS_BOOT_ORDER,
+				(const unsigned char *) &req, sizeof(req),
+				(unsigned char *) &rsp, sizeof(rsp));
+
+		if (ret < sizeof(struct ipmi_rsp) || rsp.resp.completion_code) {
+			printk(BIOS_ERR, "IPMI: %s command failed (sent ret=%d resp=0x%x)\n",
+				__func__, ret, rsp.resp.completion_code);
+			return CB_ERR;
+		}
+
+		printk(BIOS_INFO, "IPMI CMOS clear requested because CMOS data is invalid.\n");
+
+		return CB_SUCCESS;
+	}
+
+	return CB_SUCCESS;
+}
diff --git a/src/mainboard/ocp/deltalake/ipmi.h b/src/mainboard/ocp/deltalake/ipmi.h
index bb0b4a6e04..440a5056ba 100644
--- a/src/mainboard/ocp/deltalake/ipmi.h
+++ b/src/mainboard/ocp/deltalake/ipmi.h
@@ -10,6 +10,14 @@
 #define   IPMI_OEM_GET_PCIE_CONFIG		0xf4
 #define   IPMI_OEM_GET_BOARD_ID			0x37
 #define   IPMI_BMC_SET_POST_START		0x73
+#define   IPMI_OEM_SET_BIOS_BOOT_ORDER		0x52
+#define   IPMI_OEM_GET_BIOS_BOOT_ORDER		0x53
+
+#define   CMOS_BIT  (1 << 1)
+#define   VALID_BIT (1 << 7)
+#define   CLEAR_CMOS_AND_VALID_BIT(x) ((x) &= ~(CMOS_BIT | VALID_BIT))
+#define   SET_CMOS_AND_VALID_BIT(x)   ((x) |= (CMOS_BIT | VALID_BIT))
+#define   IS_CMOS_AND_VALID_BIT(x)    ((x)&CMOS_BIT && (x)&VALID_BIT)
 
 enum config_type {
 	PCIE_CONFIG_UNKNOWN = 0x0,
@@ -26,9 +34,19 @@ struct ppin_req {
 	uint32_t cpu1_hi;
 } __packed;
 
+struct boot_order {
+	uint8_t boot_mode;
+	uint8_t boot_dev0;
+	uint8_t boot_dev1;
+	uint8_t boot_dev2;
+	uint8_t boot_dev3;
+	uint8_t boot_dev4;
+} __packed;
+
 enum cb_err ipmi_set_ppin(struct ppin_req *req);
 enum cb_err ipmi_get_pcie_config(uint8_t *config);
 enum cb_err ipmi_get_slot_id(uint8_t *slot_id);
 enum cb_err ipmi_set_post_start(const int port);
 void init_frb2_wdt(void);
+enum cb_err ipmi_set_cmos_clear(void);
 #endif
diff --git a/src/mainboard/ocp/deltalake/romstage.c b/src/mainboard/ocp/deltalake/romstage.c
index b366fd9cde..f69ec60c73 100644
--- a/src/mainboard/ocp/deltalake/romstage.c
+++ b/src/mainboard/ocp/deltalake/romstage.c
@@ -126,3 +126,11 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 	mainboard_config_iio(mupd);
 	mainboard_config_upd(mupd);
 }
+
+void mainboard_rtc_failed(void)
+{
+	if (ipmi_set_cmos_clear() == CB_SUCCESS)
+		printk(BIOS_DEBUG, "%s: IPMI set cmos clear successful\n", __func__);
+	else
+		printk(BIOS_ERR, "%s: IPMI set cmos clear failed\n", __func__);
+}