uboot的编译

zjm098

现在已经有了zImage了，但这样还是无法运行的，还要有一个程序去引导它。
先下载u-boot-1.2.0-atmel.tar.bz2，解压进入，修改Makefile
将
ifeq ($(ARCH),arm)
CROSS_COMPILE = arm-linux-
endif
改为
ifeq ($(ARCH),arm)
CROSS_COMPILE = arm-softfloat-linux-gnu-
endif
当然，在这之前你要先安装arm-softfloat-linux-gnu-gcc，地址
ftp://www.baite-group.net/ARM9_TOOLCHAIN/arm-softfloat-linux-gnu.tar.gz
解压到/usr/local/下，修改环境变量
回到uboot的目录
make distclean
make at91sam9261ek_config
make all
一会后就可以看到u-boot.bin文件了，在保证你的板子上已经有了databoot后就可以用sam把uboot烧进dataflash了，按复位键
RomBOOT
>
Load UBOOT from dataflash[c0008000] to SDRAM[23f00000]
PLLA[200MHz], MCK[100Mhz] ==> Start UBOOT
U-Boot 1.2.0 (Sep 15 2007 - 11:28:42)
DRAM:  64 MB
NAND:  NAND device: Manufacturer ID: 0xec, Chip ID: 0xda ( NAND 256MiB 3,3V 8-bit)
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda ( NAND 256MiB 3,3V 8-bit)
256 MiB
DataFlash:AT45DB642
Nb pages:   8192
Page Size:   1056
Size= 8650752 bytes
Logical address: 0xC0000000
Area 0:    C0000000 to C00041FF (RO) Bootstrap     (16kB)
Area 1:    C0004200 to C00083FF      Environment      (8kB)
Area 2:    C0008400 to C0039BFF (RO) U-Boot        (192kB)
Area 3:    C0039C00 to C0041FFF (RO) Secondary Boot     (32kB)
Area 4:    C0042000 to C01CDFFF      OS
Area 5:    C01CE000 to C083FFFF      FS
In:    serial
Out:   serial
Err:   serial
dm9000 i/o: 0x30000000, id: 0x90000a46
MAC: ab:00:00:00:00:00
could not establish link
Hit any key to stop autoboot:  3
设置uboot的环境变量
setenv bootcmd cp.b c0100000 21000000 200000\;bootm 21000000
saveenv
接着编译mkimage工具
进入uboot1.2.0/tools
make
得到mkimage工具
使用mkimage工具生成uboot的可引导文件
./mkimage -A arm -O linux -T kernel -C none -a 21000000 -e 21000040 -n linux-2.6.15.4 -d zImage uImage.bin
把uImage.bin用sam烧到dataflash的100000地址
按复位
## Booting image at 21000000 ...
   Image Name:   linux-2.6.20
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1585180 Bytes =  1.5 MB
   Load Address: 21000000
   Entry Point:  21000040
   Verifying Checksum ... OK
   XIP Kernel Image ... OK
Starting kernel ...
Uncompressing Linux.................................................................................................... done, booting the kernel.
Linux version 2.6.20 (bhrtos@localhost.localdomain) (gcc version 3.4.1) #51 Wed Sep 12 17:18:34 CST 2007
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
Machine: Atmel AT91SAM9261-EK
Ignoring unrecognised tag 0x54410008
Memory policy: ECC disabled, Data cache writeback
Clocks: CPU 198 MHz, master 99 MHz, main 18.432 MHz
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
Built 1 zonelists.  Total pages: 16256
Kernel command line: mem=64M console=ttyS0 115200 mac=00:60:6E:42:BA:80 root=/dev/nfs nfsroot=192.168.0.97:/home/bhrtos/armlinux/target ip=192.168.0.40:192.168.0.97:192.168.0.1.255.255.255.0:::eth0:on
AT91: 96 gpio irqs in 3 banks
PID hash table entries: 256 (order: 8, 1024 bytes)
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: 61696KB available (2548K code, 554K data, 104K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
SCSI subsystem initialized
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: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 2048 bind 1024)
TCP reno registered
NetWinder Floating Point Emulator V0.97 (double precision)
Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
yaffs Sep  7 2007 13:25:55 Installing.
io scheduler noop registered
io scheduler anticipatory registered (default)
atmel_lcdfb atmel_lcdfb.0: 600KiB frame buffer at 23d00000 (mapped at ffc00000)
atmel_lcdfb atmel_lcdfb.0: fb0: Atmel LCDC at 0x00600000 (mapped at c480c000), irq 21
atmel_usart.0: ttyS0 at MMIO 0xfefff200 (irq = 1) is a ATMEL_SERIAL
RAMDISK driver initialized: 4 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
dm9000 Ethernet Driver
eth%d: Invalid ethernet MAC address.  Please set using ifconfig
eth0: dm9000 at c480e000,c4810044 IRQ 107 MAC: ab:00:00:00:00:00
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
Scanning device for bad blocks
Creating 3 MTD partitions on "NAND 256MiB 3,3V 8-bit":
0x00000000-0x00400000 : "kernel"
0x00400000-0x01400000 : "rootfs"
0x01400000-0x10000000 : "user"
atmel_spi atmel_spi.0: Atmel SPI Controller at 0xfffc8000 (irq 12)
at91_ohci at91_ohci: AT91 OHCI
at91_ohci at91_ohci: new USB bus registered, assigned bus number 1
at91_ohci at91_ohci: irq 20, io mem 0x00500000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver usbkbd
drivers/usb/input/usbkbd.c: :USB HID Boot Protocol keyboard driver
usbcore: registered new interface driver usbmouse
drivers/usb/input/usbmouse.c: v1.6:USB HID Boot Protocol mouse driver
usbcore: registered new interface driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core
udc: at91_udc version 3 May 2006
mice: PS/2 mouse device common for all mice
ads7846 spi0.2: touchscreen, irq 29
input: ADS784x Touchscreen as /class/input/input0
i2c /dev entries driver
at91_i2c at91_i2c: AT91 i2c bus driver.
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
eth0: link down
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
      device=eth0, addr=192.168.0.40, mask=255.255.255.0, gw=192.168.0.1,
     host=192.168.0.40, domain=, nis-domain=(none),
     bootserver=192.168.0.97, rootserver=192.168.0.97, rootpath=
Looking up port of RPC 100003/2 on 192.168.0.97
内核引导成功


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