[U-Boot] U-Boot hangs after uncompressing kernel image on MPC5200B

[Marco Antônio Possamai]

Hello, all.

My goal is to succesfully pass a 2.6.26 linux kernel to the MPC5200B
using the three-argument command bootm.

I'm using the DENX ELDK toolchain, the U-Boot v1.2.0, the dtc-v1.2.0
(latest device tree compiler), and a suitable tftp-server pointing to
/tftpboot/5200.

I've built the image using the make ARCH=powerpc zImage command. It
creates the cuImage.lite5200b along with the lite5200.dts (which I've
compiled to a lite5200.dtb using the above mentioned dtc).

The bootloader stalls after uncompressing the kernel image. Check the
snippet below after I've configured the bootloader (using GtkTerm for
PC-board communications):


=> tftp 0x01000000 ${bootfile}

Using FEC ETHERNET device
TFTP from server 192.168.1.100; our IP address is 192.168.1.101
Filename '5200/uImage'.
Load address: 0x1000000

Loading:
#################################################################
 ############################
done
Bytes transferred = 1352689 (14a3f1 hex)
=> bootm 0x01000000 - ${fdtaddr}

## Booting kernel from Legacy Image at 01000000 ...
Image Name:   Linux-2.6.26.8-dirty
Created:      2009-01-21  14:33:22 UTC
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    1352625 Bytes =  1.3 MB
Load Address: 00400000
Entry Point:  00400550
Verifying Checksum ... OK

## Flattened Device Tree blob at 00040000
Booting using the fdt blob at 0x40000
Uncompressing Kernel Image ... OK


Please notice that the 5200/uImage (renamed from cuImage.lite5200b) is
the bootfile. The fdtaddr bears the device tree blob address at
0x00040000.

One of my doubts is that I'm unsure to where the device tree and the
image addresses should be. Obviously they should not overwrite each
other, and that is exactly what I take care of when assigning the
addresses' values. Still, I'm experiencing these stalls.

Any help would be highly appreciated.


Marco Antônio Possamai

Universidade Federal de Santa Catarina

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