mb/ocp/deltalake: Populate SMBIOS data and set the read PPIN to BMC

1. Populate SMBIOS data from OCP_DMI driver read from FRU and PPIN MSR
   for OEM string 1 to 6, add string 8 for PCIE configuration.
2. Set the read PPIN MSR to BMC.

Tested on OCP Delta Lake.

Change-Id: I9127cf5da1c56d8012694d070615aec24cc22fdf
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41279
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/ocp/deltalake/Kconfig

@@ -9,6 +9,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select SOC_INTEL_COOPERLAKE_SP
 	select SUPERIO_ASPEED_AST2400
 	select IPMI_KCS
+	select OCP_DMI
 
 config IPMI_KCS_REGISTER_SPACING
 	int

src/mainboard/ocp/deltalake/Makefile.inc

@@ -4,7 +4,7 @@ bootblock-y += bootblock.c
 
 romstage-y += romstage.c
 
-ramstage-y += ramstage.c
+ramstage-y += ramstage.c ipmi.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += fadt.c
 
 CPPFLAGS_common += -Isrc/mainboard/$(MAINBOARDDIR)/

src/mainboard/ocp/deltalake/ipmi.c

@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <console/console.h>
+#include <drivers/ipmi/ipmi_kcs.h>
+#include <drivers/ipmi/ipmi_ops.h>
+
+#include "ipmi.h"
+
+enum cb_err ipmi_set_ppin(struct ppin_req *req)
+{
+	int ret;
+	struct ipmi_rsp rsp;
+
+	ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0, IPMI_OEM_SET_PPIN,
+			(const unsigned char *) req, sizeof(*req),
+			(unsigned char *) &rsp, sizeof(rsp));
+
+	if (ret < sizeof(struct ipmi_rsp) || rsp.completion_code) {
+		printk(BIOS_ERR, "IPMI: %s command failed (ret=%d resp=0x%x)\n",
+			__func__, ret, rsp.completion_code);
+		return CB_ERR;
+	}
+
+	return CB_SUCCESS;
+}
+
+enum cb_err ipmi_get_pcie_config(uint8_t *pcie_config)
+{
+	int ret;
+	struct ipmi_config_rsp {
+		struct ipmi_rsp resp;
+		uint8_t config;
+	} __packed;
+	struct ipmi_config_rsp rsp;
+
+	ret = ipmi_kcs_message(CONFIG_BMC_KCS_BASE, IPMI_NETFN_OEM, 0x0,
+			IPMI_OEM_GET_PCIE_CONFIG, 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;
+	}
+	*pcie_config = rsp.config;
+
+	return CB_SUCCESS;
+}

src/mainboard/ocp/deltalake/ipmi.h

@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef DELTALAKE_IPMI_H
+#define DELTALAKE_IPMI_H
+
+#include <stdint.h>
+
+#define IPMI_NETFN_OEM			0x30
+#define   IPMI_OEM_SET_PPIN		0x77
+#define   IPMI_OEM_GET_PCIE_CONFIG	0xf4
+
+#define PCIE_CONFIG_UNKNOWN	0x0
+#define PCIE_CONFIG_A		0x1
+#define PCIE_CONFIG_B		0x2
+#define PCIE_CONFIG_C		0x3
+#define PCIE_CONFIG_D		0x4
+
+struct ppin_req {
+	uint32_t cpu0_lo;
+	uint32_t cpu0_hi;
+	uint32_t cpu1_lo;
+	uint32_t cpu1_hi;
+} __packed;
+
+enum cb_err ipmi_set_ppin(struct ppin_req *req);
+enum cb_err ipmi_get_pcie_config(uint8_t *config);
+#endif

src/mainboard/ocp/deltalake/ramstage.c

@@ -1,7 +1,72 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <console/console.h>
+#include <drivers/ipmi/ipmi_ops.h>
+#include <drivers/ocp/dmi/ocp_dmi.h>
 #include <soc/ramstage.h>
 
+#include "ipmi.h"
+
+extern struct fru_info_str fru_strings;
+
+static void dl_oem_smbios_strings(struct device *dev, struct smbios_type11 *t)
+{
+	uint8_t pcie_config = 0;
+
+	/* OEM string 1 to 6 */
+	ocp_oem_smbios_strings(dev, t);
+
+	/* TODO: Add real OEM string 7, add TBF for now */
+	t->count = smbios_add_oem_string(t->eos, TBF);
+
+	/* Add OEM string 8 */
+	if (ipmi_get_pcie_config(&pcie_config) == CB_SUCCESS) {
+		switch (pcie_config) {
+		case PCIE_CONFIG_UNKNOWN:
+			t->count = smbios_add_oem_string(t->eos, "0x0: Unknown");
+			break;
+		case PCIE_CONFIG_A:
+			t->count = smbios_add_oem_string(t->eos, "0x1: YV3 Config-A");
+			break;
+		case PCIE_CONFIG_B:
+			t->count = smbios_add_oem_string(t->eos, "0x2: YV3 Config-B");
+			break;
+		case PCIE_CONFIG_C:
+			t->count = smbios_add_oem_string(t->eos, "0x3: YV3 Config-C");
+			break;
+		case PCIE_CONFIG_D:
+			t->count = smbios_add_oem_string(t->eos, "0x4: YV3 Config-D");
+			break;
+		default:
+			t->count = smbios_add_oem_string(t->eos, "Check BMC return data");
+		}
+	} else {
+		printk(BIOS_ERR, "Failed to get IPMI PCIe config\n");
+	}
+}
+
+static void mainboard_enable(struct device *dev)
+{
+	dev->ops->get_smbios_strings = dl_oem_smbios_strings,
+	read_fru_areas(CONFIG_BMC_KCS_BASE, CONFIG_FRU_DEVICE_ID, 0, &fru_strings);
+}
+
 void mainboard_silicon_init_params(FSPS_UPD *params)
 {
 }
+
+static void mainboard_final(void *chip_info)
+{
+	struct ppin_req req = {0};
+
+	req.cpu0_lo = xeon_sp_ppin[0].lo;
+	req.cpu0_hi = xeon_sp_ppin[0].hi;
+	/* Set PPIN to BMC */
+	if (ipmi_set_ppin(&req) != CB_SUCCESS)
+		printk(BIOS_ERR, "ipmi_set_ppin failed\n");
+}
+
+struct chip_operations mainboard_ops = {
+	.enable_dev = mainboard_enable,
+	.final = mainboard_final,
+};