[U-Boot-Users] Re: boot linux kernel problem

[yu]

Hello. U-boot-ers.
I got a problem about the linux kernel boot.
it always hangs up at my boards.
According to Mr. Xiao's suggestions,
I already compared  the  two ppcboot.h file included in u-boot and linux 
kernel,
the bd_t structure is the same.
And I think the clocks is also OK.
but on the walnut board and another our own customized board,
the linux kernel still hangs after the kernel decompression, at the same 
step.
Please have a look at the following messages.
Do you know some possible reasons of that?

from it, I found that
bootflags   = 0x0000A000
Should it be 0x00000001 ?
Is this a problem?

btw, the linux kernel and the u-boot all works fine seperately. I can 
use the u-boot to boot the board,
and run linux kernel(zImage.treeboot format) on the  Walnut board's  
default ROM monitor,
but I can not run linux over ppcboot.
 
thanks.



=> printenv
bootcmd=bootm ffc00000
bootdelay=3
baudrate=9600
loads_echo=1
ethaddr=00:04:ac:e3:15:4c
ipaddr=192.168.1.20
serverip=192.168.1.10
stdin=serial
stdout=serial
stderr=serial
bootargs=root=/dev/ram ip=192.168.1.20::192.168.1.10:255.255.255.0

Environment size: 238/4092 bytes
=> bdinfo
memstart    = 0x00000000
memsize     = 0x02000000
flashstart  = 0xFFF80000
flashsize   = 0x00080000
flashoffset = 0x00030000
sramstart   = 0x00000000
sramsize    = 0x00000000
bootflags   = 0x0000A000
procfreq    =    200 MHz
plb_busfreq =    100 MHz
pci_busfreq = 33.333 MHz
ethaddr     = 00:04:AC:E3:15:4C
IP addr     = 192.168.1.20
baudrate    =   9600 bps
=> bootp
ENET Speed is 100 Mbps - FULL duplex connection
BOOTP broadcast 1
DHCP client bound to address 192.168.1.20
ARP broadcast 1
TFTP from server 192.168.1.10; our IP address is 192.168.1.20
Filename 'kernel'.
Load address: 0x100000
Loading: #################################################################
         #################################################################
         #################################################################
         #########################################################
done
Bytes transferred = 1286800 (13a290 hex)
=> bootm
## Booting image at 00100000 ...
   Image Name:   kernel
   Created:      2003-02-28  15:00:22 UTC
   Image Type:   PowerPC Linux Kernel Image (uncompressed)
   Data Size:    1286736 Bytes =  1.2 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
OK

-- 
Maoyuan Yu
FPGA-Processor Group
Dept. of Computer Science V
University of Mannheim
B6,23-29A - 68131 Mannheim - Germany
Phone:+(49)621 181 2631 - Fax:+(49)621 181 3580
mailto:yu at mp-sun1.informatik.uni-mannheim.de
http://cern.ch/myu

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