没有ARM开发板一样移植uboot并用SKYEYE仿真-阿里云开发者社区

本人初学u-boot，一下是我的一点实践：如果你有什么问题，相互交流学习。如果你想了解更多UBOOT可以到我空间看看其他bootloader文档。

原博客地址： http://student.csdn.net/space.php

一．源码准备

a) U-BOOT源代码 u-boot-2009.06-rc3.tar.bz2 官方最新版

b) Skyeye源代码 skyeye-1.2.4_Rel.tar.gz

c) 交叉编译器 arm-linux-gcc-3.4.1.tar.bz2

二．建立交叉编译环境

1. 将 arm-linux-gcc-3.4.1.tar.bz2 拷贝到系统的根目录

#tar zxvf arm-linux-gcc-3.4.1.tar.bz2

源码会自动解压到/usr/local/arm/../bin目录下

2 #ivi /etc/profile 在最后加入

export PATH=$PATH:/usr/local/arm/3.4.1/bin/:.

然后注销系统，重新登陆

#arm-linux-gcc – v查看配置是否成功

三．编译u-boot,生成U-BOOT.BIN文件

1. #tar jxvf u-boot-2009.06-rc3.tar.bz2

2. #cd u-boot-2009.06-rc3

3. 建立自己的开发板，我的取名为paul2410

#vi Makefile 为paul2410建立编译相

加入paul2410_config: unconfig

@./mkconfig $(@:_config=) arm arm920t paul2410 NULL s3c24x0

先在board目录中建立paul2410目录并执行以下命令

#cp board/samsung/smdk2410/* board/paul2410 – fr

#cd board/paul2410

#mv smdk2410.c teach2410.c

#修改paul2410目录下的Makefile将smdk改为paul

注：我就是没有该这个，在编译的时候出错了，无法建立.depend依赖等相关信息

在include/configs/目录中

#cp smdk2410.h paul2410.h

编译

#make paul2410_config

#make CROSS_COMPILE=arm-linux-

等一小会你就会开到你成功了

看到有u-boot.bin文件的生成，呵呵，我高兴坏了，就以上工作我就搞了老半天，编译老出错，

补充：我的这个uboot版本编译出现这种问题：在paul2410目录u-boot.lds文件中

. = ALIGN(4);

/*.rodata :{*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }*/

这是原本的代码，但是编译说语法错误，后来我找了一个u-boot.1.1.6的u-boot.lds一看，代码如下，我便修改之：

. rodata : { *(.rodata)}

重新编译成功了。

四．由于我的开发板上2440，只好用skyeye来模拟了，但效果一样不差。

先在u-boot目录下建立文件skyeye.conf内容如下：

# skyeye config file for S3C2410X

    cpu: arm920t
    mach: s3c2410x

    # physical memory
    #mem_bank: map=M, type=RW, addr=0x00000000, size=0x00100000
    mem_bank: map=M, type=RW, addr=0x30000000, size=0x04000000
    #mem_bank: map=M, type=RW, addr=0xC0000000, size=0x04000000,file=./vmlinux
    #mem_bank: map=M, type=RW, addr=0x30000000, size=0x03F80000
#mem_bank: map=M, type=RW, addr=0x33F80000, size=0x00080000,

file=./u-boot.bin,boot=yes
    #mem_bank: map=M, type=RW, addr=0xc1000000, size=0x01000000

    # all peripherals I/O mapping area
    mem_bank: map=I, type=RW, addr=0x48000000, size=0x20000000

    mem_bank: map=I, type=RW, addr=0x19000300, size=0x00000020
    #net: type=cs8900a, base=0x19000300, size=0x20,int=9, mac=08:00:3E:26:0A:5B, ethmod=tuntap, hostip=10.0.0.1
    #nandflash: type=s3c2410x,name=K9F1208U0B,dump=./nand.dump
    #lcd: type=s3c2410x, mod=gtk
    dbct:state=on

安装skyeye:

#tar zxvf skyeye-1.2.4_Rel.tar.gz

#cd skyeye-1.2.4

#make make NO_DBCT=1

注：如果你是新手，请看readme，那里写得很详细

编译完成，你将会看到enjoy it 那你已经编译成功了

五．测试u-boot

# /skyeye-1.2.4/binary/skyeye –e ./u-boot

一下是我机子上的：

[root@localhost u-boot-2009.06-rc3]# /skyeye-1.2.4/binary/skyeye -e ./u-boot.bin

check format of ./u-boot.bin error: File format not recognized

big_endian is false.

arch: arm

cpu info: armv4, arm920t, 41009200, ff00fff0, 2

mach info: name s3c2410x, mach_init addr 0x805cbf4

dbct info: Note: DBCT not compiled in. This option will be ignored

uart_mod:0, desc_in:, desc_out:, converter:

SKYEYE: use arm920t mmu ops

check format of ./u-boot.bin error: File format not recognized

load "./u-boot.bin" error

[root@localhost u-boot-2009.06-rc3]# /skyeye-1.2.4/binary/skyeye -e ./u-boot

big_endian is false.

arch: arm

cpu info: armv4, arm920t, 41009200, ff00fff0, 2

mach info: name s3c2410x, mach_init addr 0x805cbf4

dbct info: Note: DBCT not compiled in. This option will be ignored

uart_mod:0, desc_in:, desc_out:, converter:

SKYEYE: use arm920t mmu ops

exec file "./u-boot"'s format is elf32-little.

load section .text: addr = 0x33f80000 size = 0x000131b4.

load section .glue_7: addr = 0x33f931b4 size = 0x00000000.

load section .glue_7t: addr = 0x33f931b4 size = 0x00000000.

load section .rodata: addr = 0x33f931b4 size = 0x00000720.

load section .rodata.str1.4: addr = 0x33f938d4 size = 0x0000417b.

load section .data: addr = 0x33f97a50 size = 0x00000c2c.

load section .u_boot_cmd: addr = 0x33f9867c size = 0x00000468.

not load section .bss: addr = 0x33f98ae4 size = 0x000048ac .

not load section .debug_line: addr = 0x00000000 size = 0x000063e3 .

not load section .debug_info: addr = 0x00000000 size = 0x000159cf .

not load section .debug_abbrev: addr = 0x00000000 size = 0x00005b37 .

not load section .debug_aranges: addr = 0x00000000 size = 0x00000800 .

not load section .debug_frame: addr = 0x00000000 size = 0x00002c90 .

not load section .debug_pubnames: addr = 0x00000000 size = 0x00002209 .

not load section .debug_str: addr = 0x00000000 size = 0x000040ef .

not load section .comment: addr = 0x00000000 size = 0x00000426 .

not load section .debug_ranges: addr = 0x00000000 size = 0x00000608 .

call ARMul_InitSymTable,kernel filename is ./u-boot.

start addr is set to 0x33f80000 by exec file.

ERROR: s3c2410x_io_write_word(0x4c000000) = 0x00ffffff

ERROR: s3c2410x_io_write_word(0x4c000008) = 0x00048032

U-Boot 2009.06-rc3 ( 7月 09 2009 - 22:13:35)

DRAM: 64 MB

Flash: 512 kB

*** Warning - bad CRC, using default environment

In: serial

Out: serial

Err: serial

ERROR: s3c2410x_io_write_word(0x1900030a) = 0x00000000

SMDK2410 #到这你已经成功了

SMDK2410 # ls

Unknown command 'ls' - try 'help'

SMDK2410 # help

? - alias for 'help'

autoscr - DEPRECATED - use "source" command instead

base - print or set address offset

bdinfo - print Board Info structure

boot - boot default, i.e., run 'bootcmd'

bootd - boot default, i.e., run 'bootcmd'

bootelf - Boot from an ELF image in memory

bootm - boot application image from memory

bootp - boot image via network using BOOTP/TFTP protocol

bootvx - Boot vxWorks from an ELF image

cmp - memory compare

coninfo - print console devices and information

cp - memory copy

crc32 - checksum calculation

date - get/set/reset date & time

dcache - enable or disable data cache

echo - echo args to console

erase - erase FLASH memory

flinfo - print FLASH memory information

go - start application at address 'addr'

help - print online help

icache - enable or disable instruction cache

iminfo - print header information for application image

imls - list all images found in flash

imxtract- extract a part of a multi-image

itest - return true/false on integer compare

loadb - load binary file over serial line (kermit mode)

loads - load S-Record file over serial line

loady - load binary file over serial line (ymodem mode)

loop - infinite loop on address range

md - memory display

mm - memory modify (auto-incrementing)

mtest - simple RAM test

mw - memory write (fill)

nfs - boot image via network using NFS protocol

nm - memory modify (constant address)

printenv- print environment variables

protect - enable or disable FLASH write protection

rarpboot- boot image via network using RARP/TFTP protocol

reset - Perform RESET of the CPU

run - run commands in an environment variable

saveenv - save environment variables to persistent storage

setenv - set environment variables

sleep - delay execution for some time

source - run script from memory

tftpboot- boot image via network using TFTP protocol

version - print monitor version