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(已解决)skyeye上的armlinux的启动init出错

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发表于 2006-1-10 12:31:37 | 显示全部楼层 |阅读模式
我用的开发环境:redhat9,armlinux2.4.18-rmk7+bysybox1.01+arm-linux-
我建了一个ext2的ram文件initrd,然后建立的相应的目录,内核编译和busybox编译通过,但是启动armlinux的时候,提示找不到init。启动信息如下:
kyEye  Simulator Ver 0.9.8 with  GDB/Insight 5.3 Interface ****
****                                                               ****
***********************************************************************
GNU gdb 5.3
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This SkyEye was configured as "--host=i686-pc-linux-gnu --target=arm-elf"...
(no debugging symbols found)...
(SkyEye) target sim
cpu info: armv4, arm720t, 41807200, ffffff00, 1
mach info: name ep7312, mach_init addr 0x8163be0
SKYEYE: use arm7100 mmu ops
Loaded RAM   ./initrd
Connected to the simulator.
(SkyEye) load
Loading section .init, size 0xd000 vma 0xc0028000
Loading section .text, size 0xef28c vma 0xc0035000
Loading section __ex_table, size 0x6e8 vma 0xc0124290
Loading section .data, size 0xafc3 vma 0xc0126000
Start address 0xc0028000
Transfer rate: 8636856 bits in <1 sec.
(SkyEye) r
Starting program: /opt/linux/vmlinux
Linux version 2.4.18-rmk7 (root@localhost) (gcc version 3.1.1) #1 一 1月 9 21:20:58 CST 2006
CPU: ARM ARM720T revision 0
Machine: Cirrus Logic 7212/7312
Warning: bad configuration page, trying to continue
On node 0 totalpages: 4096
zone(0): 4096 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/ram init=/linuxrc console=ttyAM0,9600
Calibrating delay loop... 26.00 BogoMIPS
Memory: 16MB = 16MB total
Memory: 12864KB available (956K code, 184K data, 52K init)
Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes)
Inode-cache hash table entries: 1024 (order: 1, 8192 bytes)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Starting kswapd
ttyAM0 at I/O 0x100 (irq = 12) is a CLPS711x
ttyAM1 at I/O 0x1100 (irq = 2 is a CLPS711x
pty: 256 Unix98 ptys configured
block: 64 slots per queue, batch=16
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 1024 bind 204
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
NetWinder Floating Point Emulator V0.95 (c) 1998-1999 Rebel.com
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 2048 blocks [1 disk] into ram disk... done.
Freeing initrd memory: 2048K
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Freeing init memory: 52K
Kernel panic: No init found.  Try passing init= option to kernel.

我想请教各位大虾,armlinux启动时的init是不是用的是busybox下面的那个init?如果是的话,为什么找不到呢?我的busybox的init是正确安装在/sbin/下面的,而且也是正确链到busybox上的。

紧急求助阿!!!
谢谢!!!
发表于 2006-1-10 14:30:39 | 显示全部楼层
replace :
Kernel command line: root=/dev/ram init=/linuxrc console=ttyAM0,9600
to :
Kernel command line: root=/dev/ram console=ttyAM0,9600
then try again
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 楼主| 发表于 2006-1-10 15:50:21 | 显示全部楼层
斑竹,我试过了。还是一样的错误。不知道有哪位用:
Kernel command line: root=/dev/ram console=ttyAM0,9600 成功过?我怀疑busybox本身的init有问题,不能用。
现在这个问题我已经解决了,修改如下:
Kernel command line: root=/root/initrd console=ttyAM0,9600
即:用我的/文件系统来运行Init,成功进入busybox。用initrd来运行Init也是busybox的配置选项。
注:initrd是我建的ext2文件系统的img文件。
遗留问题:  怎么才能让busybox的/sbin/init可以正常运行??????????
还请指教!!!!!
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 楼主| 发表于 2006-1-10 15:56:21 | 显示全部楼层
现在我已成功在skyeye下运行了armlinux+busybox,这期间我也遇到了很多问题。下一步准备整理一下自己的资料,希望能对面临同样问题的一些参考!
另外,我发点牢骚:《源码开放的嵌入式系统软件分析与实践》那本书,本身其实还是不错的。不过的却有些零乱,比如,我在编译armlinux的时候,光看那一节的介绍根本编译不成功,希望斑竹能够对armlinux ,uc,uII,busybox的编译和配置,在网上能够集中详细介绍一下。这样大家就能快速的建立起这个开发环境。。。。我的一点点感想!
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