diff options
Diffstat (limited to 'src/vendorcode')
| -rw-r--r-- | src/vendorcode/google/chromeos/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/vendorcode/google/chromeos/vpd_mac.c | 93 |
2 files changed, 94 insertions, 1 deletions
diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc index f43a87e9a3..da1db8bc4d 100644 --- a/src/vendorcode/google/chromeos/Makefile.inc +++ b/src/vendorcode/google/chromeos/Makefile.inc @@ -29,7 +29,7 @@ ramstage-y += fmap.c ramstage-$(CONFIG_CHROMEOS_RAMOOPS) += ramoops.c smm-y += fmap.c romstage-y += vpd_decode.c cros_vpd.c -ramstage-y += vpd_decode.c cros_vpd.c +ramstage-y += vpd_decode.c cros_vpd.c vpd_mac.c ifeq ($(MOCK_TPM),1) CFLAGS_common += -DMOCK_TPM=1 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); +} |