Hi, I find a typical problem downloading a BIG ( 4MB) linux image to the SDRAM using u-boot's _tftpboot_ command. The Linux image is Linked at 0x20000. My u-boot is liked at 0x3e0000 (I understaood this from the following two macros) TEXT_BASE = 0x3E0000 CFG_MONITOR_BASE = 0x3E0000
On an anlysis, I figured out that, I can only download a image file of size (0X3E0000 - 0X20000 = less than 4MB) before I start overwriting the u-boot's code itself.
So I reconfigured the macros to link the u-boot on _top_ of the SDRAM (SDRAM map is 0x00000000 to 0x01000000)
TEXT_BASE = 0xFE0000 CFG_MONITOR_BASE = 0xFE0000
This should ensure that the _ftftp_ will download the 4MB image well within the u-boot code. But still I face the problem of not able to download the BIG image. Do I have to modify anything else to actually move the u-boot execution to 0XFE0000 ? Dows the tftp boot itself restrict the size of the file to be downloaded ?
Any clues in this regard. Thanks - - rupesh