Hi Sadashiv, On 28.03.2013 16:11, Sadashiva Reddy wrote: > I am using AMCC PPC440Gx processor for our project presently the board > is working fine with vxWorks(BSP + OS + Application). > But our customer new requirement is same board should be ported with linux. > > > 1. We are using BDI2000 JTAG tool for porting u-boot and kernel. > > 2. We are not able to load the u-boot or u-boot.bin file directly > to SDRAM location.
Yes, this will not work. In general "u-boot.bin" is a binary only for programming into flash. Some 4xx variants support an RAMbooting build target though (e.g. 440EPx). Please take a look at this define CONFIG_SYS_RAMBOOT. This is not ported to 440GX though at the moment. > 3. When we try to load its load to the flash loaction i.e what ever we > mention in the macro > CONFIG_SYS_TEXT_BASE from board.h file its loads to that location and > when we > give go command it throws an error called JTAG instruction overrun. > > 4. When we build the u-boot code the file size of u-boot.bin is always > created with the macro > initialized by CONFIG_SYS_TEXT_BASE from the board.h file. > > 5. We are able to load u-boot.bin to a flash location directly but u-boot is > not coming up. > So to debug the u-boot we are trying to load directly to SDRAM location. > VxWorks is > coming up when we load directly to SDRAM location. > > 6. I think the u-boot is creating a u-boot.bin file to load for flash > loaction. How to create an > image or bin file to load on SDRAM location directly. Please see my comment above. You either need to create a real U-Boot port for your custom 440GX board to program into flash. Or you can also port the CONFIG_SYS_RAMBOOT feature to 440GX to support RAMbooting. But this would only help for test purposes. I suggest that you port the "real" U-Boot to your board. Thanks, Stefan _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
