libpayload: Add RAM code to sysinfo_t

This adds CB_TAG_RAM_CODE and an entry to sysinfo_t.

BUG=chrome-os-partner:31728
BRANCH=none
TEST=Built and booted on pinky w/ depthcharge patch and saw that
/proc/device-tree/firmware/coreboot/ram-code contains correct
value

Change-Id: I35ee1bcdc77bc6d4d24c1e804aefdbbfaa3875a4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: ca6d044f2e719ded1d78a5ab3d923e06c3b88d6b
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Change-Id: I69ee1fc7bc09c9d1c387efe2d171c57e62cfaf3f
Original-Reviewed-on: https://chromium-review.googlesource.com/231132
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/8755
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/payloads/libpayload/include/coreboot_tables.h b/payloads/libpayload/include/coreboot_tables.h
index e9c159d..a3a0a05 100644
--- a/payloads/libpayload/include/coreboot_tables.h
+++ b/payloads/libpayload/include/coreboot_tables.h
@@ -239,6 +239,13 @@
 	struct mac_address mac_addrs[0];
 };
 
+#define CB_TAG_RAM_CODE		0x0028
+struct cb_ram_code {
+	uint32_t tag;
+	uint32_t size;
+	uint32_t ram_code;
+};
+
 #define CB_TAG_CMOS_OPTION_TABLE 0x00c8
 struct cb_cmos_option_table {
 	u32 tag;