ipmi/ocp: Move common OCP/Facebook IPMI OEM codes into drivers/ipmi/ocp

1. These are common OCP/Facebook IPMI OEM commands, move from mainboard
into drivers/ipmi/ocp to avoid code duplication and provide better
reusability.
2. OCP Tioga Pass enables IPMI_OCP driver.

Tested=On OCP Delta Lake and Tioga Pass verify the commands still work
correctly.

Change-Id: Idd116a89239273fd5cc7b06c7768146085a3ed69
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49235
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/src/drivers/ipmi/ocp/ipmi_ocp_romstage.c b/src/drivers/ipmi/ocp/ipmi_ocp_romstage.c
new file mode 100644
index 0000000000..8e43d8d159
--- /dev/null
+++ b/src/drivers/ipmi/ocp/ipmi_ocp_romstage.c
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <console/console.h>
+#include <drivers/ipmi/ipmi_kcs.h>
+
+#include "ipmi_ocp.h"
+
+enum cb_err ipmi_set_post_start(const int port)
+{
+	int ret;
+	struct ipmi_rsp rsp;
+
+	ret = ipmi_kcs_message(port, IPMI_NETFN_OEM, 0x0,
+				 IPMI_BMC_SET_POST_START, NULL, 0, (u8 *) &rsp,
+				 sizeof(rsp));
+
+	if (ret < sizeof(struct ipmi_rsp) || rsp.completion_code) {
+		printk(BIOS_ERR, "IPMI: %s command failed (ret=%d rsp=0x%x)\n",
+		       __func__, ret, rsp.completion_code);
+		return CB_ERR;
+	}
+	if (ret != sizeof(rsp)) {
+		printk(BIOS_ERR, "IPMI: %s response truncated\n", __func__);
+		return CB_ERR;
+	}
+
+	printk(BIOS_DEBUG, "IPMI BMC POST is started\n");
+	return CB_SUCCESS;
+}
+
+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;
+}