Hi3516A开发-- 板卡串口烧写

uboot使用loady命令进行串口传输

新改版的板卡，网络无法使用，uboot可以起来，但是内核和文件系统镜像，没法烧写。

在无网络的情况下，SecureCRT使用loady命令进行串口传输，烧写内核和文件系统。（nand 模式下烧写）：

指令参看：Hi3516A开发--板卡烧写

mw.b 82000000 ff 400000
loady 0x82000000 115200 
传输-> 发送Ymodem->选择需要烧入的文件 uImage_hi3516a
nand erase 800000 400000
nand write 82000000 800000 400000

mw.b 82000000 ff 2200000
loady 0x82000000 115200 
传输-> 发送Ymodem->选择需要烧入的文件 rootfs_hi3516a_uclib_8k_40bit.yaffs2
nand erase c00000 2200000
nand write.yaffs 82000000 c00000  F80D98

如果在SPI模式下烧写，请使用SPI的烧写指令。

扩展：查看所有命令：
TI8168_EVM#help
?       - alias for 'help'
askenv  - get environment variables from stdin
base    - print or set address offset
bdinfo  - print Board Info structure
bmp     - manipulate BMP image data
boot    - boot default, i.e., run 'bootcmd'
bootd   - boot default, i.e., run 'bootcmd'
bootm   - boot application image from memory
bootp   - boot image via network using BOOTP/TFTP protocol
chpart  - change active partition
cmp     - memory compare
coninfo - print console devices and information
cp      - memory copy
crc32   - checksum calculation
dhcp    - boot image via network using DHCP/TFTP protocol
echo    - echo args to console
editenv - edit environment variable
exit    - exit script
false   - do nothing, unsuccessfully
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls   - list files in a directory (default /)
go      - start application at address 'addr'
help    - print command description/usage
i2c     - I2C sub-system
iminfo  - print header information for application image
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 address)
mmc     - MMC sub system
mmcinfo - mmcinfo <dev num>-- display MMC info
mtdparts- define flash/nand partitions
mtest   - simple RAM read/write test
mw      - memory write (fill)
nand    - NAND sub-system
nandecc - Switch NAND ECC calculation algorithm b/w hardware and software
nboot   - boot from NAND device
nfs     - boot image via network using NFS protocol
nm      - memory modify (constant address)
ping    - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
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
sf      - SPI flash sub-system
showvar - print local hushshell variables
sleep   - delay execution for some time
source  - run script from memory
test    - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
true    - do nothing, successfully
version - print monitor version
TI8168_EVM#TI8168_EVM#help

可以使用 go指令：
烧写程序过程
SecureCRT_CN的时候loady 0x20008000 115200
传输-> 发送Ymodem  填写 要烧写的程序如 led.bin
然后 go  0x20008000
烧写成功