Thanks Scott, that helped alot... i think I understand a bit more..
>> I have tried to change the value of TEXT_BASE to (xFFF8_0000) in the >> config.mk file(and other >> entries) but I must not be doing something else right.. > What specifically happened when you tried changing TEXT_BASE? > ok, I set TEXT_BASE to 0xFFF8_000 and it creates the 512kB u-boot.bin image just fine... > > You should write it to the end of flash. > Yep, I think that was my issue all along.. I was always writing images to the beginning of the flash.. If I write the file to the last 512KB of the flash, it boots fine now... > > The size of your image is going to be RESET_VECTOR_ADDRESS - TEXT_BASE > + 4. Note that TEXT_BASE/RESET_VECTOR_ADDRESS should be set to the > appropriate offset from where u-boot puts the flash. This isn't > necessarily where the hardware maps the flash on power-on, though from > your board config it doesn't look like you move it. >> >> #define CONFIG_SYS_FLASH_BASE 0xfe000000 /* start of >> FLASH 8M */ > > 4M flash or 8M? yep it is just 4M... I moved the BASE to 0xFFC0_0000 and will correct comments.. (wasn't worried about comments yet...) >> #define CONFIG_SYS_LBC_FLASH_BASE CONFIG_SYS_FLASH_BASE >> >> /*Chip select 0 - Flash*/ >> #define CONFIG_SYS_BR0_PRELIM 0xfe001001 >> #define CONFIG_SYS_OR0_PRELIM 0xfe006ff7 > > This is configuring the flash window for 32M... It should be > harmless, though -- the flash contents should just repeat within that > window. Changed these to 0xFFCxxxxxxx so it is just 4M now... >> SET_LAW(CONFIG_SYS_LBC_FLASH_BASE, LAW_SIZE_16M, >> LAW_TRGT_IF_LBC), > This looks like a problem -- you're setting the flash LAW to be only > 16M, but the window is 32M... Either change > TEXT_BASE/RESET_VECTOR_ADDRESS to be within the LAW, or extend/move > the LAW. > Flash base is at 0xFFC0_0000 now, so I changed it to 4M law size... with these changes, it seems to work just fine if I put the u-boot image in the last 512kB of the 4M flash..... which is great, thanks!! Is it possible to change TEXT_BASE and RESET_VECTOR_ADDRESS in such a way that I can put the 512kB uboot image at the beginning of the 4M flash instead of the end?? Bob _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
