[U-Boot] imx: Kernel not booting with fdt

[Fabio Estevam]

On Tue, Jul 2, 2013 at 12:26 PM, Matthias Weißer <weisserm at arcor.de> wrote:
> Hi
>
> I try to boot a current 3.11 kernel on a custom iMX25 board using DT. u-boot
> starts the kernel but it stops working just after the first eralyprintk
> lines are out. The u-boot/kernel output:
>
> bootm 0x81000000 - 0x80800000
> ## Booting kernel from Legacy Image at 81000000 ...
>    Image Name:   Linux-3.10.0
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    3834336 Bytes = 3.7 MiB
>    Load Address: 80008000
>    Entry Point:  80008000
>    Verifying Checksum ... OK
> ## Flattened Device Tree blob at 80800000
>    Booting using the fdt blob at 0x80800000
>    Loading Kernel Image ... OK
> OK
>    Loading Device Tree to 8374f000, end 837545d4 ... OK
>
> Starting kernel ...
>
> Uncompressing Linux... done, booting the kernel.
> [    0.000000] Booting Linux on physical CPU 0x0
> [    0.000000] Initializing cgroup subsys cpuset
> [    0.000000] Initializing cgroup subsys cpu
> [    0.000000] Initializing cgroup subsys cpuacct
> [    0.000000] Linux version 3.10.0 (mweisser at ubuntu) (gcc version 4.7.3
> (Ubuntu/Linaro 4.7.3-1ubuntu1) ) #4 Tue Jul 2 1
> 7:13:13 CEST 2013
> [    0.000000] CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177
> [    0.000000] CPU: VIVT data cache, VIVT instruction cache
> [    0.000000] Machine: Generic DT based system, model: Graf-Syteco zmx25

Not sure why you get a "Generic DT based system" here.

Can you post your dts file?

Have you selected CONFIG_MACH_IMX25_DT=y on your kernel config file?

Also, make sure you have "#define CONFIG_OF_LIBFDT" on your U-boot
board config file.

Regards,

Fabio Estevam



> [    0.000000] bootconsole [earlycon0] enabled
> [    0.000000] Memory policy: ECC disabled, Data cache writeback
>
> As this is my first contact with DT I expect a trivial error on my side.
> Anyone with any hint?
>
> Regards
> Matthias
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