On 24.04.2012 18:21, Fabio Estevam wrote:
Dirk,
On Tue, Apr 24, 2012 at 4:58 AM, Dirk Behmedirk.behme@de.bosch.com wrote:
I tested the recent master which includes the three patches planned for v2012.04.1 booting a device tree based kernel and it works :)
Have you tested it on a mx6qsabrelite using the latest mainline kernel?
Yes.
Just to make sure: You use the recent mainline with the 4 additional patches on top of v2012.04:
http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary
My kernel did not boot.
This was what I did:
make imx_v6_v7_defconfig make make imx6q-sabrelite.dtb
cat arch/arm/boot/zImage arch/arm/boot/imx6q-sabrelite.dtb> arch/arm/boot/zImage_dtb
mkimage -A arm -O linux -T kernel -C none -a 0x10008000 -e 0x10008000 -n Linux -d arch/arm/boot/zImage_dtb arch/arm/boot/uImage_dtb
cp arch/arm/boot/uImage_dtb /tftpboot/uImage
It used to work before. Is this still valid?
I don't know ;) Or better: I don't use the device tree append method.
I don't have the details here, but what I do (out of my head, so there might be some details wrong):
Use the mainline kernel 3.4-rc4 make imx_v6_v7_defconfig make LOADADDR=0x10800000 uImage
dd if=u-boot.imx of=/dev/sdd bs=512 skip=2 && sync dd if=imx6q-sabrelite.dtb of=/dev/sdd bs=512 skip=1024 && sync (<- put the dtb to 512kB on the SD card) dd if=uImage of=/dev/sdd bs=512 skip=2048 && sync (put the uImage to 1MB)
and then in U-Boot:
mmc read 0x12000000 0x800 0x2000 (read the kernel to 0x12000000) mmc read 0x11ff0000 0x400 0x40 (read the device tree to 0x11ff0000) bootm 0x12000000 - 0x11ff0000
You could do the same using tftp as proposed by Shawn:
tftpboot 0x12000000 uImage; tftpboot 0x11ff0000 imx6q-sabrelite.dtb; bootm 0x12000000 - 0x11ff0000
Again, this is just out of my head, so sorry if something is wrong.
Best regards
Dirk