From patchwork Thu Jan 20 13:31:38 2011
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Subject: nvramtool: Look at another place for the CMOS checksum specification
Date: Thu, 20 Jan 2011 13:31:38 -0000
From: Patrick Georgi <Patrick.Georgi@secunet.com>
X-Patchwork-Id: 2539
Message-Id: <1295530298.10580.20.camel@linux-0a8x.site>
To: <coreboot@coreboot.org>

Hi,

This patch tells nvramtool about another place where it can find
information about the CMOS checksum location and range before it reverts
to its own default values.

Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>


Index: coreboot/util/nvramtool/lbtable.c
===================================================================
--- coreboot.orig/util/nvramtool/lbtable.c
+++ coreboot/util/nvramtool/lbtable.c
@@ -632,6 +632,10 @@ static void get_cmos_checksum_info(void)
 
 	checksum = (struct cmos_checksum *)find_lbrec(LB_TAG_OPTION_CHECKSUM);
 
+	if (checksum == NULL) {
+		checksum = (struct cmos_checksum *)next_cmos_rec((const struct lb_record *)first_cmos_table_enum(), LB_TAG_OPTION_CHECKSUM);
+	}
+
 	if (checksum != NULL) {	/* We are lucky.  The coreboot table hints us to the checksum.
 				 * We might have to check the type field here though.
 				 */