Hi, How to download Uboot into mini2440 which has no software already inside? ie)Super-vivi also not present,Bios erased by JTAG. Is Super-vivi Bootloader same as Supervivi Bios? If after downloading Uboot does Uboot has start address after BootSRAM section ie) after 4KB from 0x0000 0000 in Nand. Please help!
How to download Uboot in mini2440?
Search for jtagingthenor.pdf found on www.andahammer.com and see if that helps. If you want u-boot search for Forest Bao and his mini2440 tutorial.
Hi Vasanth, You can download u-boot either into NOR or NAND flash. In both cases, you will need a hardware interface like JTAG to write it into the flash (Since there is no bootloader, a software approach is not possible). However, you will need a special version of u-boot for NAND flash. It must have a 4K Secondary Program Loader (SPL) part that can initialize the NAND flash controller interface and SDRAM controller. It then loads the main u-boot code (also called secondary or second-stage bootloader) from NAND flash into SDRAM for execution. If you wish to boot from NOR flash, you can use the normal u-boot because NOR flash does not need any special initialization (unlike NAND flash). This u-boot code should initialize the NAND flash and SDRAM controllers to load and execute a kernel and root file system. This is so because of the difference in the hardware interfaces of the NOR and NAND flash memory devices to the CPU. Refer to the S3C2440A processor documentation for details. Hope that helps, Gautam