Re: flash-kernel and dtb

[Rainer Dorsch <ml@bokomoko.de>]

Hi Karsten,

thanks for your response.

On Saturday 14 June 2014 23:56:01 Karsten Merker wrote:
> On Sat, Jun 14, 2014 at 10:36:43PM +0200, Rainer Dorsch wrote:
> > I try to get the kernel up with manual tweaks in u-boot first:
> > 
> > CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
> > Reset cause: POR
> > Board: MX6-CuBox-i
> > DRAM:  2 GiB
> > MMC:   FSL_SDHC: 0
> > In:    serial
> > Out:   vga
> > Err:   vga
> > Net:   FEC
> > (Re)start USB...
> > USB0:   lowlevel init failed
> > USB1:   USB EHCI 1.00
> > scanning bus 1 for devices... 1 USB Device(s) found
> > 
> >        scanning usb for storage devices... 0 Storage Device(s) found
> >        scanning usb for ethernet devices... 0 Ethernet Device(s) found
> > 
> > Hit any key to stop autoboot:  0
> > CuBox-i U-Boot >  setenv mmcdev 0
> > CuBox-i U-Boot > setenv mmcpart 2
> > CuBox-i U-Boot > setenv ramdiskaddr 0x11800000
> > CuBox-i U-Boot > setenv fdt_addr 0x18000000
> > CuBox-i U-Boot > setenv scr_addr 0x19900000
> > CuBox-i U-Boot > ext4load mmc 0:2 0x19900000 /boot/boot.scr
> > 637 bytes read in 94 ms (5.9 KiB/s)
> > CuBox-i U-Boot > source 0x19900000
> > ## Executing script at 19900000
> > 2857680 bytes read in 248 ms (11 MiB/s)
> > 28603 bytes read in 126 ms (221.7 KiB/s)
> > 10934444 bytes read in 620 ms (16.8 MiB/s)
> > Booting Debian 3.15-rc8-armmp from mmc 0:2...
> > Kernel image @ 0x10800000 [ 0x000000 - 0x2b9ad0 ]
> > ## Flattened Device Tree blob at 18000000
> > 
> >    Booting using the fdt blob at 0x18000000
> > 
> > EHCI failed to shut down host controller.
> > 
> >    Loading Ramdisk to 8ecf1000, end 8f75e8ac ... OK
> >    Using Device Tree in place at 18000000, end 18009fba
> > 
> > Starting kernel ...
> > 
> > but then the boot process is stuck.
> 
> It looks like you might not have set a console device, so
> possibly the kernel boots, but you do not see any output.  Try
> setting the console device on the kernel commandline with a
> command like:
> 
>   setenv bootargs 'console=ttyS0,115200 rootwait panic=10'
> 
> (The example assumes that the serial port on the i.MX6 is ttyS0 and
> not something else such as ttyAMA0.)

The boot process is not successful. I have an ssh server running on the cubox 
and this is also not reachable.

I my post a few minutes back I also showed that setting bootargs does not 
change something.

I also added the panic=10 now

rd@bokocube:~$ cat /etc/default/flash-kernel
#LINUX_KERNEL_CMDLINE="quiet"
LINUX_KERNEL_CMDLINE="root=/dev/mmcblk0p2 rootfstype=ext4 ro rootwait 
console=ttymxc0,115200 panic=10"
rd@bokocube:~$ 

but then after 10s the system reboots and the default boot process starts the 
standard image.

Thanks,
Rainer




-- 
Rainer Dorsch
http://bokomoko.de/