On Tuesday 13 December 2011 06:33 PM, Tomi Valkeinen wrote:
Hi,
I'm trying to boot Pandaboard ES with DT, but failing. I've debugged the
problem enough to see that the bootloader properly loads the DT blob,
and passes it to the kernel, but the kernel sees only garbage at that
address, and the devtree->magic check fails in setup_machine_fdt(). I
presume something overwrites it.
I'm using Pandaboard ES (so omap 4460), Benoit's
"for_3.3/1_omap_dt_i2c_twl_test" branch, u-boot from Linaro
(git://git.linaro.org/boot/u-boot-linaro-stable.git master). My u-boot
I used the u-boot from here and it worked fine for me, not sure if its
any different.
git://git.secretlab.ca/git/u-boot devicetree/linaro-stable
boot-script is below.
Should the setup work? What setup do you have? Any ideas what could be
wrong?
Tomi
u-boot boot script:
-------------------
set netmask 255.255.255.0
set ipaddr 192.168.1.15
set serverip 192.168.1.1
set kaddr 0x82000000
set dtbaddr 0x85000000
set bootcmd 'tftpboot ${kaddr} uImage; tftpboot ${dtbaddr} omap4-panda.dtb; fdt
addr ${dtbaddr}; fdt resize; bootm ${kaddr} - ${dtbaddr}'
set bootargs 'console=ttyO2,115200n8 root=/dev/nfs
nfsroot=192.168.1.1:/tftpboot/rootfs,tcp,nolock,rsize=1024,wsize=1024
ip=192.168.1.15:::::eth0: vram=36M rootdelay=1 no_console_suspend debug
earlyprintk console loglevel=8'
usb start
boot
boot log (with added debug prints)
----------------------------------
## Booting kernel from Legacy Image at 82000000 ...
Image Name: Linux-3.2.0-rc1-00014-g4d66c8f-d
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3664960 Bytes = 3.5 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
## Flattened Device Tree blob at 85000000
Booting using the fdt blob at 0x85000000
Loading Kernel Image ... OK
OK
reserving fdt memory region: addr=9d000000 size=3000000
reserving fdt memory region: addr=85000000 size=1000
Loading Device Tree to bfef3000, end bfef6fff ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
DT phys bfef3000, virt ffef3000
illegal DT magic
Warning: Neither atags nor dtb found
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