- 论坛徽章:
- 0
|
我的目标板是友善之臂的sbc2410v6,uboot直接用的luofuchong大侠的u-boot-20060523.tar.bz2+u-boot-lfc.patch.下载后一切正常.
然后按照<<linux系统移植>>这个文档,编译出了zImage,用tftp下载到0x30008000地址.
接着根文件系统没有自己做,下了个luofuchong提供的根文件系统的文件夹,然后由于ubuntu8.04没有mkcramfs,我就:
$sudo apt-get install cramfsprogs
$mkcramfs rootfs my_rootfs.cramfs
目标板的nandflash是这样分区的:
0x00000000-0x00100000 : "bootloader"
0x00100000-0x00400000 : "kernel"
0x00400000-0x02c00000 : "root"
0x02d00000-0x03c00000 : "user"
于是将根文件系统烧到nandflash
$tftp 0x31000000 my_rootfs.cramfs
$nand erase 0x400000 0x200000
$nand write 0x31000000 0x400000 0x200000
下载内核
$tftp 0x30008000 zImage
$go 0x30008000
最后报错:
sbc2410=> go 0x30008000
## Starting application at 0x30008000 ...
Uncompressing Linux.................................................................. done, booting the kernel.
Linux version 2.6.14.1 (ryan@ryan-pc) (gcc version 3.4.1) #3 Thu Oct 23 10:56:25 CST 2008
CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)
Machine: SMDK2410
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2410A (id 0x32410002)
S3C2410: core 202.800 MHz, memory 101.400 MHz, peripheral 50.700 MHz
S3C2410 Clocks, (c) 2004 Simtec Electronics
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists
Kernel command line: noinitrd root=/dev/mtdblock/3 console=ttySAC0
irq: clearing subpending status 00000002
PID hash table entries: 512 (order: 9, 8192 bytes)
timer tcon=00500000, tcnt a509, tcfg 00000200,00000000, usec 00001e4c
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 64MB = 64MB total
Memory: 62720KB available (1640K code, 372K data, 92K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
softlockup thread 0 started up.
NET: Registered protocol family 16
S3C2410: Initialising architecture
S3C2410 DMA Driver, (c) 2003-2004 Simtec Electronics
DMA channel 0 at c4800000, irq 33
DMA channel 1 at c4800040, irq 34
DMA channel 2 at c4800080, irq 35
DMA channel 3 at c48000c0, irq 36
NetWinder Floating Point Emulator V0.97 (double precision)
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
Console: switching to colour frame buffer device 80x25
fb0: Virtual frame buffer device, using 1024K of video memory
S3C2410 RTC, (c) 2004 Simtec Electronics
s3c2410_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2410
s3c2410_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2410
s3c2410_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2410
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2410-nand: mapped registers at c4980000
s3c2410-nand: timing: Tacls 10ns, Twrph0 30ns, Twrph1 10ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0x76 (Samsung NAND 64MiB 3,3V 8-bit)
NAND_ECC_NONE selected by board driver. This is not recommended !!
Scanning device for bad blocks
Creating 4 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0x00000000-0x00100000 : "bootloader"
0x00100000-0x00400000 : "kernel"
0x00400000-0x02c00000 : "root"
0x02c00000-0x03b00000 : "user"
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 2, 16384 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
Reading data from NAND FLASH without ECC is not recommended
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
请各位看看我究竟是哪一步出了问题?
还有一个问题,就是我下载了内核到0x30008000后,按理说要执行go 0x30008000才能启动内核,但是我执行go 0或其他随便一个地址,都能启动内核,是不是这个uboot的设置有问题?
我现在想到的可能出错的方面有:
1. 内核的Default kernel command string: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0,115200 是不是有问题
2. 我用的mkcramfs工具有没有问题
3. 写到nandflash的地址是不是正确
[ 本帖最后由 ryancat 于 2008-10-23 11:54 编辑 ] |
|
免费注册
发表于 2008-10-23 10:42
