avr32: add ATAG_BOARDINFO
This patch adds a new ATAG_BORADINFO to U-Boot. This tag is intended to hand
over the bd->bi_board_number to the linux kernel for early stage board
information like a board revision or other kind of board specific decisions
necessary before the linux peripherial drivers are up.
Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
diff --git a/arch/avr32/lib/bootm.c b/arch/avr32/lib/bootm.c
index 8a47cfe..c9a55ff 100644
--- a/arch/avr32/lib/bootm.c
+++ b/arch/avr32/lib/bootm.c
@@ -165,6 +165,16 @@
return params;
}
+static struct tag *setup_boardinfo_tag(struct tag *params)
+{
+ params->hdr.tag = ATAG_BOARDINFO;
+ params->hdr.size = tag_size(tag_boardinfo);
+
+ params->u.boardinfo.board_number = gd->bd->bi_board_number;
+
+ return tag_next(params);
+}
+
static void setup_end_tag(struct tag *params)
{
params->hdr.tag = ATAG_NONE;
@@ -195,6 +205,7 @@
params = setup_commandline_tag(params, commandline);
params = setup_clock_tags(params);
params = setup_ethernet_tags(params);
+ params = setup_boardinfo_tag(params);
setup_end_tag(params);
printf("\nStarting kernel at %p (params at %p)...\n\n",