On 8 Jan 2015, stefan@agner.ch wrote:
Boot from SD-card (and probably also from NAND) was broken since commit d6d07a9bec ("arm: vf610: add NAND support for vf610twr"). It looks like the increased size of U-Boot lead to a situation where the boot ROM overwrote its own stack/heap while loading U-Boot from the SD-card to the SRAM. However, U-Boot worked fine when loaded through USB serial loader directly into SRAM. It looks like loading from SD-card uses other stack/heap location then the serial loader (or maybe no stack or heap at all). This fix moves U-Boot to gfxRAM, which is 512kB in size and is not used by the boot ROM nor the SD-card loader of it.
Signed-off-by: Stefan Agner stefan@agner.ch
We use U-Boot from gfxRAM on Vybrid since quite a while for the Colibri VF50/VF61 modules in our downstream U-Boot branch. Hence this is quite well tested.
Just today I discovered that this is broken on the Tower module. Back then, when I made the offending change, I only tested on the Tower board using the serial loader, since I thought the behaviour should be exactly the same. But now, I know better... :-)
If still possible, it would be great to get this into v2015.01...
include/configs/vf610twr.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/configs/vf610twr.h b/include/configs/vf610twr.h index 6fd0b17..bd79e81 100644 --- a/include/configs/vf610twr.h +++ b/include/configs/vf610twr.h @@ -125,7 +125,10 @@ #define CONFIG_BOOTDELAY 3
#define CONFIG_LOADADDR 0x82000000 -#define CONFIG_SYS_TEXT_BASE 0x3f008000
+/* We boot from the gfxRAM area of the OCRAM. */ +#define CONFIG_SYS_TEXT_BASE 0x3f408000 +#define CONFIG_BOARD_SIZE_LIMIT 524288
#define CONFIG_EXTRA_ENV_SETTINGS \ "script=boot.scr\0" \
Acked-by: Bill Pringlemeir bpringlemeir@nbsps.com
See also: http://lists.denx.de/pipermail/u-boot/2014-December/197641.html
It seems since v2014.04 u-boot on the Vybrid Tower SD card has not booted. Most users will probably boot this way.
https://community.freescale.com/docs/DOC-95248
Thanks, Bill Pringlemeir.