Apparently the firmware's board rev response includes both the board
revision and some other data even on the RPi1. In particular, the
warranty bit is bit 24. We need to mask that out when looking up the
board ID.
Signed-off-by: Stephen Warren swar...@wwwdotorg.org
---
board/raspberrypi/rpi/rpi.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index 50a699bb9e0c..a105953541be 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -278,10 +278,17 @@ static void get_board_rev(void)
* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
* http://www.raspberrypi.org/forums/viewtopic.php?f=63t=99293p=690282
* (a few posts down)
+*
+* For the RPi 1, bit 24 is the warranty bit, so we mask off just the
+* lower byte to use as the board rev:
+*
http://www.raspberrypi.org/forums/viewtopic.php?f=63t=98367start=250
+* http://www.raspberrypi.org/forums/viewtopic.php?f=31t=20594
*/
rpi_board_rev = msg-get_board_rev.body.resp.rev;
if (rpi_board_rev 0x80)
rpi_board_rev = (rpi_board_rev 4) 0xff;
+ else
+ rpi_board_rev = 0xff;
if (rpi_board_rev = ARRAY_SIZE(models)) {
printf(RPI: Board rev %u outside known range\n,
rpi_board_rev);
--
1.9.1
___
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
