skyeye run uclinux出错

shengcheng

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This SkyEye was configured as "--host=i686-pc-linux-gnu --target=arm-elf".
(SkyEye) tar sim
cpu info: armv3, arm7tdmi, 41007700, fff8ff00, 0
mach info: name at91, mach_init addr 0x813dae4
lcd info: turn off lcd!
SKYEYE: use arm7100 mmu ops
Loaded ROM images/romfs.img
Connected to the simulator.
(SkyEye) load
Loading section .init, size 0x9000 vma 0x1000000
Loading section .text, size 0xcc328 vma 0x1009000
Loading section .data, size 0x81b4 vma 0x10d6000
Start address 0x1000000
Transfer rate: 7251680 bits in <1 sec.
(SkyEye) run
Starting program: /usr/uClinux-dist/linux-2.4.x/linux
Linux version 2.4.17-uc0 ([email protected]) (gcc version 2.95.3 20010315 (release)(ColdFire patches - 20010318 from http://fiddes.net/coldfire/)(-msep-data patches)) #3 日 5月 21 22:14:40 CST 2006
Processor: Atmel AT91M40xxx revision 0
Architecture: EB01
On node 0 totalpages: 1024
zone(0): 0 pages.
zone(1): 1024 pages.
zone(2): 0 pages.
Kernel command line: root=/dev/rom0
Calibrating delay loop... 13.00 BogoMIPS
Memory: 4MB = 4MB total
Memory: 3000KB available (816K code, 166K data, 36K init)
Dentry-cache hash table entries: 512 (order: 0, 4096 bytes)
Inode-cache hash table entries: 512 (order: 0, 4096 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: 1024 (order: 0, 4096 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
Atmel USART driver version 0.99
ttyS0 at 0xfffd0000 (irq = 2) is a builtin Atmel APB USART
ttyS1 at 0xfffcc000 (irq = 3) is a builtin Atmel APB USART
block: 64 slots per queue, batch=16
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Blkmem copyright 1998,1999 D. Jeff Dionne
Blkmem copyright 1998 Kenneth Albanowski
Blkmem 1 disk images:
0: 4000000-3FFFFFF [VIRTUAL 4000000-3FFFFFF] (RO)
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 512 bind 512)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
Blkmem: bad access: block=2, count=2 (pos=800, len=0)
end_request: I/O error, dev 1f:00 (Blkmem), sector 2
EXT2-fs: unable to read superblock
Blkmem: bad access: block=0, count=2 (pos=400, len=0)
end_request: I/O error, dev 1f:00 (Blkmem), sector 0
romfs: unable to read superblock
Kernel panic: VFS: Unable to mount root fs on 1f:00

请问这个错误原因是什么?

shengcheng

出错在
Blkmem: bad access: block=2, count=2 (pos=800, len=0)
end_request: I/O error, dev 1f:00 (Blkmem), sector 2
EXT2-fs: unable to read superblock
Blkmem: bad access: block=0, count=2 (pos=400, len=0)
end_request: I/O error, dev 1f:00 (Blkmem), sector 0
romfs: unable to read superblock
Kernel panic: VFS: Unable to mount root fs on 1f:00

说是io读写错误  版主可以帮忙看看给点建议吗？

zeero

可能有这些原因:
你的romfs.img太大,系统默认的只有771KB,可以尝试在make menuconfig时候,增加它的大小:

1在General
setup菜单里，有“Default kernel command string”这一项，这样改变它：


root=/dev/ram0 initrd=0x01300000,800K keepinitrd
或者在一个blkmem文件中(具体在哪个文件夹不记得了)修改:
(got)/* Global offset table */
romfs_data_start = .;
romfs.o
romfs_end =.;
这样就不会根据实际大小加载了

shengcheng

我的romfs.img只有371k也遇到这种情况  应该不是omfs.img太大的问题