TQ210——TFTP bare board program download

1. Download u-boot.bin directly to the memory and run (use 210USB in DNW to start downloading). Enter the command in DNW to directly view and modify u-boot.bin

2. Download the program you need to download to the memory through tftp.
Download example: tftp 30000000 (specify the program led_on.bin to download to the address 30000000 in the memory. Here you can set any space address larger than 1M (the size of u-boot.bin) to prevent the specified program led_on.bin from overwriting u-boot.bin)

3. Solidify u-boot.bin to nandflash (to prevent the program code from being lost after the development board is powered off)

4. Download the bare board program to the link address through tftp

printenv --- Print environment information
setenv --- Set environment variables
setenv ipaddr 192.168.0.10
setenv serverip 192.168.0.111
setenv ipadr ----- Delete error information
saveenv --- Save environment information
ping --- Test network connection
ping 192.168.0.111
tftp --- Download files from TFTP server
tftp 30000000 u-boot.bin
nand---nandflash operation
nand erase 0 (starting position) 100000 (size) (clear the contents of nandflash space from 0 to 100000)
nand write 30000000 (memory) 0 (nandflash start) 100000 (size)
(write the contents of memory address 30000000 to nandflash space 0-100000)
go---start running at the specified location
go 30000000

set nandflash start
tftp 30000000 led_on.bin 
go 30000000

1M=100 0000 bytes
15kb=1 0000 bytes

set uImage environment variables: setenv bootcmd tftp 30008000 uImage;bootm 30008000
/*Note that it is best not to add newlines manually*/
Set the file system environment variable nfs: setenv bootargs console=ttySAC0,115200 root=/dev/nfs rw nfsroot=192.168.1.8:/home/libang/nfs/roof ip=192.168.1.6:::255.255.255.0::eth0:off init=/linuxrc

Modify MACH_TYPE ---- include/configs/TQ210
setenv machid data

/************************************************************************
Solidify u_boot:tftp 30000000 u-boot.bin
  nand erase 0 100000
  nand write 30000000 0 100000
Solidify Kernel:tftp 30000000 uImage
  nand erase 500000 00000
  nand write 30000000 500000 500000
Solidify fs: tftp 30000000 rootfs.img
  nand erase a00000 1400000
  nand write.yaffs 30000000 a00000 1400000 Boot
kernel: setenv read 30000000 500000 500000; bootm 30000000
Boot file system: (nfs) setenv bootargs console=ttySAC0 root=/dev/nfs rw nfsroot=192.168.1.8:/home/libang/nfs/roof/ ip=192.168.1.6:192.168.0.1::255.255.255.0::eth0:off init=/linuxrc
     (yaffs2)setenv bootargs console=ttySAC0 root=/dev/mtdblock3 rootfstype=yaffs2 rw init=/linuxrc
*******************************************************************/