2410 uboot 移植笔记
主要参考了luofuchong 大侠
和bekars大侠
http://dev.csdn.net/article/84/84538.shtm
bekars大侠的很可能就是原创， 有时间再研究一下。
过程：
下载 luofuchong 上面的链接里面的u-boot.是1.1.4的，打上他提供的补丁之后，在Makefile中指定 ARCH=arm,和
CROSS_COMPILE=/opt/host/armv4l/bin/armv4l-unknown-linux-
make smdk2410_config
make
出现了错误：
/root/uboot/u-boot-1.1.4/include/asm/processor.h:52: parse error before `1'
/root/uboot/u-boot-1.1.4/include/asm/processor.h:52: warning: no semicolon at end of struct or union
/root/uboot/u-boot-1.1.4/include/asm/processor.h:54: parse error before `}'
/root/uboot/u-boot-1.1.4/include/asm/processor.h:58: field `insn' has incomplete type
google了一下，修改办法：
以下是错误所指的文件的相关部分：
（每行前面是行号）
51: union debug_insn {
52: u32 arm;
53: u16 thumb;
54: };
56: struct debug_entry {
57: u32 address;
58: union debug_insn insn;
59: };
第一种：
感谢tpu的关注，将52行的arm改为arm1就可以了，可能是引用这个union的文件中用的是arm1，所以造成不一致，出错，^_^，真不知道这样的错误是怎么出的？
第二种：
修改成: union debug_insn { u32 arm_mode; u16 thumb_mode; }
把生成的u-boot.bin烧到板子上去
U-Boot 1.1.4 (Jun 29 2006 - 10:44:44)
U-Boot code: 33F80000 -> 33F9716C BSS: -> 33F9B2B8
RAM Configuration:
Bank #0: 30000000 64 MB
Flash: 2 MB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
S3C2410 #
hujun2410=> go 0x30008000
## Starting application at 0x30008000 ...
undefined instruction
pc : [<33f0000c>] lr : [<33f8601c>]
sp : 33f07cd8 ip : 0000107e fp : 33f07ce4
r10: 33f07d0c r9 : 00000000 r8 : 33f4ffdc
r7 : 33f07d10 r6 : 00000002 r5 : 00000000 r4 : 30008000
r3 : fc000000 r2 : 30008000 r1 : 000000c1 r0 : 00000000
Flags: Nzcv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
hujun2410=>tftp
出现很多ARP.... 忘了， 反正网卡cs8900 id 没有读出来
cs8900 id is 0x7ccc //我加入调试语句，出来的
应该是0x630e
分析：
证明nand Flash 已经识别出来了，就是cs8900 的id 识别不正确， 应该是0x63e,
我的板子用的nGCS2作片选， vivi里面定义CS8900_BASE=0x1100 0300 ,我的vivi可以用tftp下载，
本来想在vivi 里面找点线索，无奈做板子的提供的这个vivi 有些源码没有公开，(鄙视之。。。）
只有头文件。
nGCS2,2410 DATASHEET对应的地址是 0x1000 0000 ,
我把CS8900_BASE 设成0x1100 0300， 0x1000 0300 都试了， 都不行，
还有我看vivi里面有BWCON 寄存器的设置， 曾在2.6驱动中也在这个上面花了不少时间，但uboot里面没有，是否可以从这里入手解决呢？
郁闷了一阵子之后，查阅了bootloader的资料，又发现了lowlevel_init.S文件有
BWCON和BANKCON 的设置， 这时候再把别人的移植文档看了一下，在bekars的文档里发现了一点蛛丝马迹
进行如下修改：
1：首先肯定CS8900_BASE（在include/configs/smdk2410.h)设成0x1100 0300 是对的。
2：在lowlevel_init.S 里修改
SMRDATA:
/* .word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))*/
.word 0x22111d10 //修改BWSCON,设置为0x22111d10
.word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))//nGCS0
.word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))//nGCS1
/*.word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))*/
.word 0x1f7c //修改BANKCON2,设置为0x22111d10
这两个值和硬件连接是相关的，必须根据自己的板子作出相应调整。
关于这两个值怎么来的， 参见我的cs8900移植到2.6上的经历便知。试验证明是正确的。
在成功之前 还调试了一次，因为我看vivi 中 BWSCON,设置为0x22111110， 而BANKCON2,设置为0x00000700
所以我照此设置,得到
U-Boot 1.1.4 (Jan 12 2007 - 18:11:19)
U-Boot code: 33F80000 -> 33F9DA98 BSS: -> 33FA2108
RAM Configuration:
Bank #0: 30000000 64 MB
Nor Flash: 512 kB
Nand Flash: 64 MB
*** Warning - bad CRC or NAND, using default environment
In: serial
Out: serial
Err: serial
id is 0x7c0e //cs8900 id 仍然有问题。
hujun2410=> go 0x30000000
## Starting application at 0x30000000 ...
正确的uboot启动信息如下：
U-Boot 1.1.4 (Jan 12 2007 - 19:38:27)
U-Boot code: 33F80000 -> 33F9DA98 BSS: -> 33FA2108
RAM Configuration:
Bank #0: 30000000 64 MB
Nor Flash: 512 kB
Nand Flash: 64 MB
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot:
按下空格键之后，
hujun2410=> ping 59.69.74.87(是我的host pc )
host is alive 说明cs8900正常工作了。
hujun2410=> nand read 30008000 30000 1d0000; go 30008000
NAND read: device 0 offset 196608, size 1900544 ... 1900544 bytes read: OK
## Starting application at 0x30008000 ...
Uncompressing Linux.......................................................................Linux version 2.6.14 (root@hujunlinux) (gcc version 3.4.1) #9 Thu Jan 11 20:37:59 EST 2007CPU: 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: console=ttySAC0 root=/dev/nfs nfsroot=59.69.74.87:/public/root_nfs ifirq: clearing pending ext status 00000800
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: 62208KB available (2081K code, 462K data, 108K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
softlockup thread 0 started up.
NET: Registered protocol family 16
USB Control, (c) 2006 sbc2410
S3C2410: Initialising architecture
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
NetWinder Floating Point Emulator V0.97 (double precision)
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: devfs_debug: 0x0
devfs: boot_options: 0x1
Initializing Cryptographic API
s3c2410-lcd s3c2410-lcd: no platform data for lcd, cannot attach
s3c2410-lcd: probe of s3c2410-lcd failed with error -22
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
nbd: registered device at major 43
usbcore: registered new driver ub
Cirrus Logic CS8900A driver for Linux (Modified for SMDK2410)
pSMDK2410_ETH_IO=0x11000000,vSMDK2410_ETH_IO=0xe0000000
eth0: CS8900A rev E at 0xe0000300 irq=52, no eeprom , addr: 08: 0:3E:26:0A:5B
NFTL driver: nftlcore.c $Revision: 1.97 $, nftlmount.c $Revision: 1.40 $
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: Product: S3C24XX OHCI
usb usb1: Manufacturer: Linux 2.6.14 ohci_hcd
usb usb1: SerialNumber: s3c24xx
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
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
IP-Config: Complete:
device=eth0, addr=59.69.74.159, mask=255.0.0.0, gw=59.69.74.1,
host=matrix4, domain=, nis-domain=arm9.net,
bootserver=59.69.74.87, rootserver=59.69.74.87, rootpath=
Looking up port of RPC 100003/2 on 59.69.74.87
Looking up port of RPC 100005/1 on 59.69.74.87
VFS: Mounted root (nfs filesystem).
Mounted devfs on /dev
Freeing init memory: 108K
NETDEV WATCHDOG: eth0: transmit timed out
NETDEV WATCHDOG: eth0: transmit timed out
init started: BusyBox v0.60.5 (2003.09.05-09:25+0000) multi-call binary
[01/Jan/1970:00:00:12 +0000] boa: server version Boa/0.94.13
[01/Jan/1970:00:00:12 +0000] boa: server built Feb 28 2004 at 21:47:23.
[01/Jan/1970:00:00:12 +0000] boa: starting server pid=710, port 80
NETDEV WATCHDOG: eth0: transmit timed out
NETDEV WATCHDOG: eth0: transmit timed out
Please press Enter to activate this console.
BusyBox v0.60.5 (2003.09.05-09:25+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.
我使用的是nfs做文件系统，
在uboot中
hujun2410=> setenv bootargs console=ttySAC0 root=/dev/nfs nfsroot=59.69.74.87:/public/root_nfs ip=59.69.74.159:59.69.74.87:59.69.74.1:255.0.0.0:matrix4.arm9.net:eth0:off
hujun2410=> setenv bootcmd nand read 30008000 30000 1d0000\;go 30008000
hujun2410=> saveenv
Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
这样就可以了。好了，现在按一下你的复位键就启动了。
参考资料：
uboot 英文手册
uboot-sourceForge
这个比较快
http://coosign.blogchina.com/1318487.html uboot 中文手册
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