vpd: populate coreboot table with serialno

BRANCH=none
BUG=chrome-os-partner:37813
TEST=devicetree is populated with with "compatible", "hardware",
and "serialno" properties

Change-Id: Ibe84aa05702d2a33456c6c33d15a4c7d4a6d45d7
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 61408d969f5d6e1e40f919b3defd5f1622391c9e
Original-Change-Id: I02f360f4e5385042f56eb2b2f29072e393a24fc9
Original-Signed-off-by: Stephen Barber <smbarber@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/259141
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9882
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/include/boot/coreboot_tables.h

@@ -296,6 +296,9 @@ struct lb_spi_flash {
 	uint32_t erase_cmd;
 };
 
+#define LB_TAG_SERIALNO		0x002a
+#define MAX_SERIALNO_LENGTH	32
+
 /* The following structures are for the cmos definitions table */
 #define LB_TAG_CMOS_OPTION_TABLE 200
 /* cmos header record */
@@ -392,6 +395,8 @@ void lb_board(struct lb_header *header);
  */
 void lb_table_add_macs_from_vpd(struct lb_header *header);
 
+void lb_table_add_serialno_from_vpd(struct lb_header *header);
+
 struct lb_record *lb_new_record(struct lb_header *header);
 
 #endif /* COREBOOT_TABLES_H */

src/vendorcode/google/chromeos/Makefile.inc

@@ -41,7 +41,7 @@ ramstage-y += fmap.c
 ramstage-$(CONFIG_CHROMEOS_RAMOOPS) += ramoops.c
 smm-y += fmap.c
 romstage-y += vpd_decode.c cros_vpd.c
-ramstage-y += vpd_decode.c cros_vpd.c vpd_mac.c vpd_calibration.c
+ramstage-y += vpd_decode.c cros_vpd.c vpd_mac.c vpd_serialno.c vpd_calibration.c
 ifeq ($(CONFIG_ARCH_X86)$(CONFIG_ARCH_MIPS),)
 bootblock-y += watchdog.c
 ramstage-y += watchdog.c

src/vendorcode/google/chromeos/vpd_serialno.c

@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <boot/coreboot_tables.h>
+#include <console/console.h>
+#include <assert.h>
+#include <string.h>
+
+#include <vendorcode/google/chromeos/cros_vpd.h>
+
+void lb_table_add_serialno_from_vpd(struct lb_header *header)
+{
+	struct lb_string *serialno_rec = NULL;
+	const char serialno_key[] = "serial_number";
+	char serialno[32];
+	size_t len;
+
+	if (!cros_vpd_gets(serialno_key, serialno,
+				sizeof(serialno))) {
+		printk(BIOS_ERR, "no serial number in vpd\n");
+		return;
+	}
+	printk(BIOS_DEBUG, "serial number is %s\n", serialno);
+	len = strlen(serialno) + 1;
+	ASSERT(len <= 32);
+
+	serialno_rec = (struct lb_string *)lb_new_record(header);
+	serialno_rec->tag = LB_TAG_SERIALNO;
+
+	serialno_rec->size = ALIGN_UP(sizeof(*serialno_rec) + len, 8);
+	memcpy(&serialno_rec->string, serialno, len);
+}