PPCboot and latest kernel

[vijay sharma]

Hi ALL,
I have been woking on upgrading an embedded system based on MPC8241 from
2.4.17 linux to 2.6.30 kernel.
I am currently struck one point.

Here is the console output where I am struck:
=================================
cpboot> bootm
## Booting image at 08000000 ...
   Image Name:   Linux-2.6.30
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    21729342 Bytes = 21220 kB = 20 MB
   Load Address: 01900000
   Entry Point:  01900570
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
Memory <- <0x0 0x10000000> (256MB)
CPU clock-frequency <- 0xbebc1fe (200MHz)
CPU timebase-frequency <- 0x17d783f (25MHz)
CPU bus-frequency <- 0x5f5e0ff (100MHz)

zImage starting: loaded at 0x01900000 (sp: 0x0fdc3a08)
Allocating 0x165ca04 bytes for kernel ...
gunzipping (0x00000000 <- 0x0190c000:0x02f58efc)...done 0x1637b54 bytes

Linux/PowerPC load:
Finalizing device tree... flat tree at 0x2f65300 <== Beyond this point no
output is available.
(The size of image is 20MB because ramfs embedded inside the image)

==================================

Here are the steps I have taken till now.
1) Defined platform.dts file for my platform. Since I am using MPC8241, I
have taken cuboot-824x.c. Is this file correct.
Do I need to define my own cuboot-*.c file ?

2)Built cuImage and loaded it into memory. I am not seeing any output once
control passes from wrapper to kernel. As you can see from logs mentioned
above.

While going through mail achieves I found two possible reasons for this
1) Wrong entries inside dts file
I am sure serial attributes are correctly defined inside the file. Also it
works for wrapper. It should work for linux also.

2) PPCboot not providing information.
I have built cuImage . Shouldn't kernel be getting its attributes from dtb
file rather then depending on bd_info structure.
I cannot upgrade to uboot. Is there some way I can make my board come up?

Thanks in advance,
Vijay
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