probolem about ppc755 linux kernel booting.(waiting online...)
From: kugle (kugle_at_ksft.com)
Date: 11/24/04
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Date: Wed, 24 Nov 2004 12:57:26 +0800
my linux-kernel version: 2.4.26
host os: debian
cpu: ppc755
ram disk size:4M
ram size:512M
serial console: 115200
bootroom: build by myself with vxworks.
boadtype: i select bord type as sandpoint(board design by self.but like
sandpoint)
after bootroom load and decompress kernel at phy-address:0x0
jump to 0x00 to linux kernel
but after output Total pages info, it's dead.
modify history:
arch/ppc/boot/simple/Makefile kernel-boot address linkto 0x1b00000
arch/ppc/boot/simple/misc-simple.c decompress to 0x00 with size 0x1b00000
arch/ppc/platform/sandpoint.c modify memory size query result from
32*1024*1024 as 512*1024*1024
make menuconfig:
set kernel default param: root=/dev/ram rw console=ttyS0,115200
this fllowing info is output-info on console:
comment:[IIII]*** is info output by myself
[hack-printk] is hook printk info on console by modify printk() in
kernel/printk.c
---------------------------------------------------------
No need to save program file to Flash!
Starting at 0x1b00000...
IIII:[KEY_POSITION] load_kernel ing... load_addr=[0x01B00000]
num_words=[0x000B4077] cksum=[0x00000000] bp=[0x04000000]
loaded at: 01B00000 01DD01DC
zimage at: 01B059B1 01BF573F
initrd at: 01BF6000 01DCCE3D
avail ram: 04000000 20000000
Linux/PPC load: root=/dev/ram rw console=ttyS0,115200
IIII:[KEY POSITION] Uncompressing kernnel zImage ... dest
address[0x00000000]done.
ITCS: uncompress data :
60000000 60000000 60000000 7C7F1B78
7C9E2378 7CBD2B78 7CDC3378 7CFB3B78
3B000000 481C7CA1 48003C01 48003B4D
48003BE1 48003C19 4800739D 3B000000
id mach(): done
MMU:enter
IIII:[hack-printk]
<6>Memory BAT mapping: BAT2=256Mb, BAT3=256Mb, residual: 0Mb
MMU:hw init
hash:enter
hash:find piece
IIII:[hack-printk]
Total memory = 512MB; using 1024kB for hash table (at c0300000)
hash:patch
hash:done
MMU:mapin
MMU:mapin_ram done
MMU:setio
MMU:exit
IIII:[KEY POSITION] Enter Real-Kernel World. Kernel is independent of
Platform. start_kernel ...
IIII:[hack-printk]
Linux version 2.4.26-1-386 (root@debian) (gcc version 3.4.1 (Debian
3.4.1-1)) #4 .. 11.. 24 11:32:07 CST 2004
setup_arch: enter
IIII:[hack-printk]
kgdb init
setup_arch: bootmem
mpc10x:enter
mpc10x:exit
ITCS:[hack-printk]
<6>Motorola SPS Sandpoint Test Platform
arch: exit
IIII:[hack-printk]
On node 0 totalpages: 131072
IIII:[hack-printk]
floant u poiin ksed H
$T0740:00000000;01:c01acb30;#37$T0740:00000000;01:c01acb30;#37
--------------------------------------------
if i press anykey in console. "$T0740:00000000;01:c01acb30;#37" will be
retype on console.
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