This patch adds parts from u-boot code for doing RPi revision detection and take care about the "warranty bit". I got this bit on my RPi2. Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx> --- arch/arm/boards/raspberry-pi/rpi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm/boards/raspberry-pi/rpi.c b/arch/arm/boards/raspberry-pi/rpi.c index f9406d4..faf48a5 100644 --- a/arch/arm/boards/raspberry-pi/rpi.c +++ b/arch/arm/boards/raspberry-pi/rpi.c @@ -203,7 +203,22 @@ static void rpi_get_board_rev(void) return; } + /* Comments from u-boot: + * For details of old-vs-new scheme, see: + * https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py + * http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=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=63&t=98367&start=250 + * http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594 + */ rpi_board_rev = msg->get_board_rev.body.resp.rev; + if (rpi_board_rev & 0x800000) + 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); -- 2.6.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
