libpayload: cros: include mac addresses in coreboot table
Pass MAC addresses found in coreboot table into lib_sysinfo.
BUG=chrome-os-partner:32152
TEST=with all changes in place MAC addresses are properly inserted
into the kernel device tree.
Change-Id: I6b13c1c2c246362256abce3efa4a97b355647ef8
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: e2fe74f86b4ed43eb8a3c9d99055afc5d6fb7b78
Original-Change-Id: I1d0bd437fb27fabd14b9ba1fb5415586cd8847bb
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/219444
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8751
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index 53b5890..13a9978 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -224,6 +224,18 @@
uint32_t index;
};
+#define CB_TAG_MAC_ADDRS 0x0026
+struct mac_address {
+ uint8_t mac_addr[6];
+ uint8_t pad[2]; /* Pad it to 8 bytes to keep it simple. */
+};
+
+struct cb_macs {
+ uint32_t tag;
+ uint32_t size;
+ uint32_t count;
+ struct mac_address mac_addrs[0];
+};
#define CB_TAG_CMOS_OPTION_TABLE 0x00c8
struct cb_cmos_option_table {
diff --git a/payloads/libpayload/include/sysinfo.h b/payloads/libpayload/include/sysinfo.h
index 1753f6f..1c49f9d 100644
--- a/payloads/libpayload/include/sysinfo.h
+++ b/payloads/libpayload/include/sysinfo.h
@@ -35,6 +35,9 @@
/* Allow a maximum of 8 GPIOs */
#define SYSINFO_MAX_GPIOS 8
+/* Up to 10 MAC addresses */
+#define SYSINFO_MAX_MACS 10
+
#include <coreboot_tables.h>
struct cb_serial;
@@ -86,6 +89,8 @@
#ifdef CONFIG_LP_CHROMEOS
int num_gpios;
struct cb_gpio gpios[SYSINFO_MAX_GPIOS];
+ int num_macs;
+ struct mac_address macs[SYSINFO_MAX_MACS];
#endif
unsigned long *mbtable; /** Pointer to the multiboot table */
diff --git a/payloads/libpayload/libc/coreboot.c b/payloads/libpayload/libc/coreboot.c
index b513726..8ed0307 100644
--- a/payloads/libpayload/libc/coreboot.c
+++ b/payloads/libpayload/libc/coreboot.c
@@ -114,6 +114,20 @@
info->vdat_addr = phys_to_virt(vdat->range_start);
info->vdat_size = vdat->range_size;
}
+
+static void cb_parse_mac_addresses(unsigned char *ptr,
+ struct sysinfo_t *info)
+{
+ struct cb_macs *macs = (struct cb_macs *)ptr;
+ int i;
+
+ info->num_macs = (macs->count < ARRAY_SIZE(info->macs)) ?
+ macs->count : ARRAY_SIZE(info->macs);
+
+ for (i = 0; i < info->num_macs; i++)
+ info->macs[i] = macs->mac_addrs[i];
+}
+
#endif
static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
@@ -291,6 +305,9 @@
case CB_TAG_VBOOT_HANDOFF:
cb_parse_vboot_handoff(ptr, info);
break;
+ case CB_TAG_MAC_ADDRS:
+ cb_parse_mac_addresses(ptr, info);
+ break;
#endif
case CB_TAG_TIMESTAMPS:
cb_parse_tstamp(ptr, info);