系统无法启动问题

[skevil]

我用的是S3C2440的开发板，但是一直没办法启动系统麻烦大神指导下是什么原因
以下是我的log


NAND read: device 0 offset 0x60000, size 0x200000

Reading data from 0x25f800 -- 100% complete.
2097152 bytes read: OK
## Booting image at 30007fc0 ...
Image Name: Linux-2.6.22.6
Created: 2020-07-13 5:40:32 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1469360 Bytes = 1.4 MB
Load Address: 30008000
Entry Point: 30008000
Verifying Checksum ... OK
XIP Kernel Image ... OK

Starting kernel ...

Uncompressing Linux................................................................................................ done, booting the kernel.
Linux version 2.6.22.6 (liaojiankun@ubuntu) (gcc version 4.3.2 (Sourcery G++ Lite 2008q3-72) ) #1 Sun Jul 12 22:40:30 PDT 2020
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
Machine: SMDK2440
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz
S3C24XX 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. Total pages: 16256
Kernel command line: nonitrd console=ttySAC0 root=/dev/mtdblock2 rootfstype=yaffs2
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
timer tcon=00500000, tcnt a2c1, tcfg 00000200,00000000, usec 00001eb8
Console: colour dummy device 80x30
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 61708KB available (2708K code, 301K data, 120K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
S3C2410 Power Management, (c) 2004 Simtec Electronics
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C2440: Clock Support, DVS off
S3C24XX DMA Driver, (c) 2003-2004,2006 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
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (NAND) 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
Console: switching to colour frame buffer device 30x40
fb0: s3c2410fb frame buffer device
lp: driver loaded but no devices found
ppdev: user-space parallel port driver
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
s3c2440-uart.0: s3c2410_serial0 at MMIO map 0x50000000 mem 0xf0400000 (irq = 70) is a S3C2440
s3c2440-uart.1: s3c2410_serial1 at MMIO map 0x50004000 mem 0xf0404000 (irq = 73) is a S3C2440
s3c2440-uart.2: s3c2410_serial2 at MMIO map 0x50008000 mem 0xf0408000 (irq = 76) is a S3C2440
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: module loaded
line 400 <DM9KS> I/O: c485e000, VID: 90000a46
line 408 <DM9KS> I/O: c485e000, VID: 90000a46
<DM9KS> error version, chip_revision = 0x1a, chip_info = 0x3
id_val=0
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand s3c2440-nand: Tacls=3, 30ns Twrph0=7 70ns, Twrph1=3 30ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
Scanning device for bad blocks
Bad eraseblock 183 at 0x016e0000
Bad eraseblock 305 at 0x02620000
Bad eraseblock 306 at 0x02640000
Bad eraseblock 391 at 0x030e0000
Bad eraseblock 577 at 0x04820000
Bad eraseblock 1179 at 0x09360000
Bad eraseblock 1273 at 0x09f20000
Bad eraseblock 1632 at 0x0cc00000
Bad eraseblock 1671 at 0x0d0e0000
Creating 4 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x00000000-0x00040000 : "bootloader"
0x00040000-0x00060000 : "params"
0x00060000-0x00260000 : "kernel"
0x00260000-0x10000000 : "root"
usbmon: debugfs is not available
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
mice: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: bus frequency set to 390 KHz
s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
TCP cubic registered
NET: Registered protocol family 1
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
VFS: Cannot open root device "mtdblock2" or unknown-block(31,2)
Please append a correct "root=" boot option; here are the available partitions:
1f00 256 mtdblock0 (driver?)
1f01 128 mtdblock1 (driver?)
1f02 2048 mtdblock2 (driver?)
1f03 259712 mtdblock3 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,2)

[wisewoman]

Unable to mount root fs on unknown-block，不能挂载ROOT到未知块

[qq_46561154]

刚刚入坑过来学习

[glen30]

看样子是mtdblock上的rootfs挂载失败了，看下是不是用错了分区，或者分区上是否有rootfs
也可以先使用ramdisk，把内核和ramdisk下载到内存，从ramdisk启动，这样就不需要外部的rootfs了

[Golden_Chen]

启动不了，有几点需要查下： 1. 你的bootarg是怎么设置的，比如rootfs type所指定的文件系统，是否和实际烧录镜像一致； 2. 所指定FS类型的驱动有没有在内核中支持 3. rootfs所在的MTD分区，offset 128KB 的位置存在坏块，是否在烧录前对nandflash重新做坏块检查 Bad eraseblock 305 at 0x02620000 如果一开始是好的，后来启动不了，那么就看第3点，重新烧录一遍