1 files changed, 93 insertions, 0 deletions
diff --git a/src/vendorcode/google/chromeos/vpd_mac.c b/src/vendorcode/google/chromeos/vpd_mac.c
new file mode 100644
index 0000000000..ad4174c6bf
--- /dev/null
+++ b/src/vendorcode/google/chromeos/vpd_mac.c
@@ -0,0 +1,93 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 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 <string.h>
+
+#include <vendorcode/google/chromeos/cros_vpd.h>
+
+void lb_table_add_macs_from_vpd(struct lb_header *header)
+{
+	/*
+	 * In case there is one or more MAC addresses stored in the VPD, the
+	 * key is "ethernet_mac{0..9}", up to 10 values.
+	 */
+	static const char mac_addr_key_base[] = "ethernet_mac0";
+	char mac_addr_key[sizeof(mac_addr_key_base)];
+	char mac_addr_str[13]; /* 12 symbols and the trailing zero. */
+	int count;
+	struct lb_macs *macs = NULL;
+	const int index_of_index = sizeof(mac_addr_key) - 2;
+
+	/*
+	 * MAC addresses are stored in the VPD as strings of hex numbers,
+	 * which need to be converted into binary for storing in the coreboot
+	 * table.
+	 */
+	strcpy(mac_addr_key, mac_addr_key_base);
+	count = 0;
+	do {
+		int i;
+
+		if (!cros_vpd_gets(mac_addr_key, mac_addr_str,
+				   sizeof(mac_addr_str)))
+			break; /* No more MAC addresses in VPD */
+
+		if (!macs) {
+			macs = (struct lb_macs *)lb_new_record(header);
+			macs->tag = LB_TAG_MAC_ADDRS;
+		}
+
+		/* MAC address in symbolic form is in mac_addr_str. */
+		for (i = 0; i < sizeof(macs->mac_addrs[0].mac_addr); i++) {
+			int j;
+			uint8_t n = 0;
+
+			for (j = 0; j < 2; j++) {
+				char c = mac_addr_str[i * 2 + j];
+
+				if (isxdigit(c)) {
+					if (isdigit(c))
+						c -= '0';
+					else
+						c = tolower(c) - 'a' + 10;
+				} else {
+					printk(BIOS_ERR,
+					       "%s: non hexadecimal symbol "
+					       "%#2.2x in the VPD field %s\n",
+					       __func__, (uint8_t)c,
+					       mac_addr_key);
+					c = 0;
+				}
+				n <<= 4;
+				n |= c;
+			}
+			macs->mac_addrs[count].mac_addr[i] = n;
+		}
+		count++;
+		mac_addr_key[index_of_index] = '0' + count;
+	} while (count < 10);
+
+	if (!count)
+		return; /* No MAC addresses in the VPD. */
+
+	macs->count = count;
+	macs->size = sizeof(*macs) + count * sizeof(struct mac_address);
+}