内核下载地址以及文件系统地址？
bootargs=noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0bootcmd=boot_zImage
bootdelay=0
baudrate=115200
ethaddr=0a:1b:2c:3d:4e:5f
stdin=serial
stdout=serial
stderr=serial
mtdids=nand0=nandflash0
mtdparts=mtdparts=nandflash0:256k@0(bios),128k(params),128k(toc),512k(eboot),1024k(logo),3m(kernel),-(root)
partition=nand0,0
mtddevnum=0
mtddevname=bios
serverip=192.168.0.1
ipaddr=192.168.1.8
netmask=255.255.255.0
这是我的uboot的信息。。
请问我该怎么计算我下载文件系统和内核的地址呢/？？？ 我编写驱动。。现在刚刚学习写字符驱动。。写个简单的led驱动
下载到开发板上。。可是开发板内核启动不了/。/
不知道什么问题。。。
求高手指导。。 应该下载到0x32000000是吧。。
uboot 该下载到什么地方？？
文件系统怎么办？？
在0x32000000地址下载
引导一次后，再次引导失败。。 其他地址下载引导也会失败。。。 不知道直接下载kernel可不可以。。。。
是不是先下载别的。。。 Start Linux ...
Copy linux kernel from 0x00200000 to 0x30008000, size = 0x00300000 ... Copy Kernel to SDRAM done,NOW, Booting Linux......
Uncompressing Linux......................................................................................................................................................... done, booting the kernel.
Linux version 2.6.30.4-EmbedSky (root@EmbedSky) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-176) ) #8 Mon May 31 10:57:52 CST 2010
CPU: ARM920T revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: TQ2440
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, (c) 2004 Simtec Electronics
S3C244X: core 400.000 MHz, memory 100.000 MHz, peripheral 50.000 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.Total pages: 16256
Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc console=ttySAC0
NR_IRQS:85
irq: clearing pending ext status 00080000
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x30
console enabled
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: 59860KB available (4320K code, 448K data, 240K init, 0K highmem)
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Calibrating delay loop... 199.47 BogoMIPS (lpj=498688)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 296 bytes
NET: Registered protocol family 16
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c4808000, irq 33
DMA channel 1 at c4808040, irq 34
DMA channel 2 at c4808080, irq 35
DMA channel 3 at c48080c0, irq 36
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: bus frequency set to 97 KHz
s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
cfg80211: Calling CRDA to update world regulatory domain
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
NET: Registered protocol family 1
yaffs May 31 2010 10:39:00 Installing.
msgmni has been set to 117
alg: No test for stdrng (krng)
io scheduler noop registered (default)
Console: switching to colour frame buffer device 60x17
fb0: s3c2410fb frame buffer device
backlight initialized
GPIO-Control initialized
PWM-Test initialized
adc initialized
s3c2440-uart.0: tq2440_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: tq2440_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: tq2440_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2440
loop: module loaded
Driver 'sd' needs updating - please use bus_type methods
dm9000 Ethernet Driver, V1.31
Now use the default MAC address: 10:23:45:67:89:ab
eth0 (dm9000): not using net_device_ops yet
eth0: dm9000e at c4814000,c4818004 IRQ 51 MAC: 10:23:45:67:89:ab (EmbedSky)
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand s3c2440-nand: Tacls=2, 20ns Twrph0=3 30ns, Twrph1=2 20ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
NAND_ECC_NONE selected by board driver. This is not recommended !!
Scanning device for bad blocks
Bad eraseblock 131 at 0x000001060000
Bad eraseblock 189 at 0x0000017a0000
Bad eraseblock 191 at 0x0000017e0000
Bad eraseblock 193 at 0x000001820000
Bad eraseblock 195 at 0x000001860000
Bad eraseblock 691 at 0x000005660000
Bad eraseblock 723 at 0x000005a60000
Bad eraseblock 987 at 0x000007b60000
Bad eraseblock 1055 at 0x0000083e0000
Bad eraseblock 1160 at 0x000009100000
Bad eraseblock 1423 at 0x00000b1e0000
Bad eraseblock 1477 at 0x00000b8a0000
Creating 3 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x000000000000-0x000000040000 : "EmbedSky_Board_uboot"
0x000000200000-0x000000500000 : "EmbedSky_Board_kernel"
0x000000500000-0x000010000000 : "EmbedSky_Board_yaffs2"
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
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
内核终于可以正常启动了。。
明白了，所谓的地址是什么了
首先我把内核烧写到了0x32000000地址处，这是内存地址而不是nand地址Copy linux kernel from 0x00200000 to 0x30008000, size = 0x00300000 ... Copy Kernel to SDRAM done,NOW, Booting Linux......
Uncompressing Linux......................................................................................................................................................... done, booting the kernel.
Linux version 2.6.30.4-EmbedSky (root@EmbedSky) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-176) ) #8 Mon May 31 10:57:52 CST 2010
这句可以指导，设置U-boot的引导地址是0x00200000大小是0x00300000开始复制内核到内存
解压然后引导 mtdids=nand0=nandflash0
mtdparts=mtdparts=nandflash0:256k@0(bios),128k(params),128k(toc),512k(eboot),1024k(logo),3m(kernel),-(root)
partition=nand0,0从printenv查看到的信息一样可以找到内核下载的地址。。。
256+128+128+512+1024k = 2Ｍ 后面是３Ｍ的ｋｅｒｎｅｌ／／