我在根目錄下下建了個檔案夾/disk/A9，與開發闆相關的工具、資料都放在這裡邊。
uboot移植步驟
1.配置交叉編譯器
1>
ls /disk/A9/arm-linux-gcc-4.5.1-v6-vfp-20120301.tgz
tar -xvf arm-linux-gcc-4.5.1-v6-vfp-20120301.tgz
解壓後的檔案夾為opt
2> cp opt/* /opt/ -r
3> 配置使用者環境變量
vim ~/.bash_profile
在.bash_profile檔案中添加以下内容：
PATH=$PATH:/opt/FriendlyARM/toolschain/4.5.1/bin/
添加後.bash_profile 檔案内容如下
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
PATH=$PATH:/opt/FriendlyARM/toolschain/4.5.1/bin/
export PATH
4>生效環境變量
source ~/.bash_profile
5>測試
在新的終端在輸入 arm- ‘tab’+’tab’
出現如下界面表示交叉編譯器安裝成功
[[email protected] 2017-02-13]# arm-
arm-linux-addr2line arm-none-linux-gnueabi-addr 2line
arm-linux-ar arm-none-linux-gnueabi-ar
arm-linux-as arm-none-linux-gnueabi-as
arm-linux-c++ arm-none-linux-gnueabi-c++
arm-linux-cc arm-none-linux-gnueabi-cc
arm-linux-c++filt arm-none-linux-gnueabi-c++f ilt
arm-linux-cpp arm-none-linux-gnueabi-cpp
arm-linux-g++ arm-none-linux-gnueabi-g++
arm-linux-gcc arm-none-linux-gnueabi-gcc
2.編譯uboot
1>ls /disk/A9/uboot_tiny4412-master.zip
2>unzip uboot_tiny4412-master.zip
解壓後檔案為uboot_tiny4412-master
3>cd uboot_tiny4412-master
4>make tiny4412_config
5>make
編譯完成後顯示如下内容，表明編譯成功
arm-linux-ld: warning: creating a DT_TEXTREL in object.
arm-linux-objcopy -O srec u-boot u-boot.srec
arm-linux-objcopy –gap-fill=0xff -O binary u-boot u-boot.bin
如果 編譯出錯，一般都是未安裝32位庫 lib
安裝32位庫，我的庫檔案位lib.tar
解壓： tar -xvf lib.tar
解壓後檔案夾 test
cd test
ls
有以下三個檔案夾 lib usrlib usrlocallib
将這三個三個檔案夾添加到根目錄底下，不要覆寫根目錄下的原始檔案（即在拷貝時提示是否覆寫源檔案，直接回車即可）。
cp lib/* /lib/ -r
cp usrlib/* /usr/lib/ -r
cp usrlocallib/* /usr/local/lib/ -r
加載庫後重新編譯。
3.準備SD卡
1》df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda7 207G 44G 153G 23% /
tmpfs 3.8G 224K 3.8G 1% /dev/shm
/dev/sda5 2.0G 64M 1.8G 4% /boot
/dev/sdb1 1023M 6.2M 1017M 1% /media/5D13-6E09
/dev/sdb3 2.0G 87M 1.8G 5%
/media/38fa7b25-a79c-4f22-bfdd-37eef00bb5eb
2》 umount /media/*
3》 fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00045184
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13055 104858624 7 HPFS/NTFS
/dev/sda2 13055 26109 104858624 7 HPFS/NTFS
/dev/sda3 26109 32636 52429824 7 HPFS/NTFS
/dev/sda4 32636 60802 226238488 5 Extended
/dev/sda5 32637 32892 2048000 83 Linux
/dev/sda6 32892 33414 4194304 82 Linux swap /
/dev/sda7 33414 60802 219993088 83 Linux
Disk /dev/sdb: 15.5 GB, 15523119104 bytes
64 heads, 32 sectors/track, 14804 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x7d37efd0
Device Boot Start End Blocks Id System
/dev/sdb1 20 1044 1049600 c W95 FAT32 (LBA)
/dev/sdb2 1045 2069 1049600 83 Linux
/dev/sdb3 2070 4118 2098176 83 Linux
4》 D格SD卡 ，這裡D格大小為 bs * count = 1MB
dd if=/dev/zero of=/dev/sdb bs=1024 count=1024
count=1024
1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 0.260175 s, 4.0 MB/s
5》 fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00045184
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13055 104858624 7 HPFS/NTFS
/dev/sda2 13055 26109 104858624 7 HPFS/NTFS
/dev/sda3 26109 32636 52429824 7 HPFS/NTFS
/dev/sda4 32636 60802 226238488 5 Extended
/dev/sda5 32637 32892 2048000 83 Linux
/dev/sda6 32892 33414 4194304 82 Linux swap / Solaris
/dev/sda7 33414 60802 219993088 83 Linux
Disk /dev/sdb: 15.5 GB, 15523119104 bytes
64 heads, 32 sectors/track, 14804 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
4**燒寫Uboot**
1>cd /disk/A9/uboot_tiny4412-master
2>cd sd_fuse/
3> ls
Makefile sd_fdisk.c tiny4412 V310-EVT1-mkbl2.c
4> make
gcc -o mkbl2 V310-EVT1-mkbl2.c
gcc -o sd_fdisk sd_fdisk.c
5>cd tiny4412/
6>./sd_fusing.sh /dev/sdb(我的SD卡)
出現如下畫面說明燒寫成功
/dev/sdb reader is identified.
BL1 fusing
16+0 records in
16+0 records out
8192 bytes (8.2 kB) copied, 0.218726 s, 37.5 kB/s
BL2 fusing
28+0 records in
28+0 records out
14336 bytes (14 kB) copied, 0.38555 s, 37.2 kB/s
u-boot fusing
540+1 records in
540+1 records out
276932 bytes (277 kB) copied, 2.04629 s, 135 kB/s
TrustZone S/W fusing
184+0 records in
184+0 records out
94208 bytes (94 kB) copied, 0.741492 s, 127 kB/s
U-boot image is fused successfully.
Eject SD card and insert it again.
5>将SD卡插入闆子上
6> 确定闆子與PC通信OK
ls /dev/tty*
發現有ttyUSB0 說明闆子序列槽與PC間裝置通信正常（闆子序列槽與PC usb口之間通過序列槽轉接線或序列槽子產品通信）
7>安裝并設定序列槽通信工具minicom
1>yum -y install minicom
2>minicom -s
出現如下畫面:
+—–[configuration]——+
| Filenames and paths |
| File transfer protocols |
| Serial port setup |
| Modem and dialing |
| Screen and keyboard |
| Save setup as dfl |
| Save setup as.. |
| Exit |
| Exit from Minicom |
+————————–+
3> 選擇Serial port setup 并按如下設定
Serial Device : /dev/ttyUSB0
Bps/Par/Bits : 115200 8N1
Hardware Flow Control : No
Software Flow Control : No
儲存設定
4> 選擇 Save setup as dfl
5> 選擇Exit
将會進入如下界面：
Welcome to minicom 2.3
OPTIONS: I18n
Compiled on Aug 19 2010, 05:50:19.
Port /dev/ttyUSB0
Press CTRL-A Z for help on special keys
��������������������������������������������������������������������������������������������������������K
U-Boot 2010.12 (Feb 13 2017 - 17:23:07) for TINY4412
CPU: S5PC220 [Samsung SOC on SMP Platform Base on ARM CortexA9]
APLL = 1400MHz, MPLL = 800MHz
Board: TINY4412
DRAM: 1023 MiB
vdd_arm: 1.2
vdd_int: 1.0
vdd_mif: 1.1
BL1 version: N/A (TrustZone Enabled BSP)
Checking Boot Mode … SDMMC
REVISION: 1.1
MMC Device 0: 14804 MB
MMC Device 1: 3728 MB
MMC Device 2: N/A
* Warning - using default environment
Net: No ethernet found.
Hit any key to stop autoboot: 0
設定完成。
minicom 退出方法 CTRL + A + q
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