{Embedded} tq2440 (days embedded) Note

2013-03-24

Today, my friend came to me for a tq2440 (S3C2440) day embedded. By the way, I learned about this development board,

For more information about board resources, see tq2440 development user manual. I used to develop ok6410 development board. I don't fully understand nor/NAND false. 6410 supports SD card startup.

First install U-boot for nor false. Use the JTAG interface to start from nor, go to the serial port tool interface and download the operating system;

On the serial port interface, follow the steps below (my friend's board is MB, and I got 64 MB, which makes it fail to start..., and then changed to MB)

--- [9] format the NAND Flash

--- [1] Download U-boot or stepldr. nb1 or other bootloader to NAND Flash

--- [3] Download Linux kernel to NAND Flash

--- [6] Download yaffs image to NAND Flash

--- [B] Download logo picture (. Bin) to NAND Flash

Clear NAND Flash-> download uboot to NAND Flash-> download Linux kernel-> download yaffs File System-> download the logo, and press 8 to start.

Required tools: dnw.exew.usb download driver .rar, putty, securecrt

Nandflash after S3C2440 ResetFirst 4 K storage spaceIt overlaps with the first 4 K of the memory address (starting from 0x00000000) (For details, refer to 2440 sheet). If the bootloader code is smaller than 4 K, it can be run directly without loading it To the memory; if the startup code is greater than 4 kb, bootloader is in the nandflash 4 kb Code (the address overlaps with the memory 4 kb ).Load the bootloader code in nandflash into the memoryAnd then run it from the memory.

Let's take a look at this. I'm a little lazy and don't want to write it by myself. There is a lot of information on the Internet, so Google.:

S3C2440 storage controller and address and startup http://www.cnblogs.com/geneil/archive/2011/12/20/2295220.html

S3C2440
NAND Flash Controller http://blog.chinaunix.net/uid-20769502-id-136020.html

S3C2440 nandflash start http://blog.csdn.net/zhaocj/article/details/5803699

Research on http://yinyuzw.blog.163.com/blog/static/205490194201242165622554/ of S3C2440 Startup Mode