Dear Darius Augulis,
In message 4A784702.40806@gmail.com you wrote:
No. TEXT_BASE is an absolute address.
yes, but depends on the physical RAM base and size.
Only on ARM (and other architectures that copied it's broken implementation). TEXT_BASE is an absolute address (in the boot flash) on PowerPC.
could you please explain more? why to the end of RAM?
YOu want to have a maximum of contiguous RAM available to load Linux kernel, ramdisk images etc.
for example I have 16MB RAM, base is 0x10000000. TEXT_BASE = 0x10400000. Why is better to set this to 0x10F00000 ? To have more stack and malloc memory? But U-boot will never exceed such limit? Please explain where I am wrong. Thanks!
With RAM from 0x10000000...0x10ffffff you should probably put TEXT_BASE at 0x10f80000 which then would leave you some 15 MB of contiguous RAM for your use.
With your setup you jusy have some 3+ MB below U-Boot and some 11+ MB above it. It makes not much sense to have U-Boot sitting right in the middle of precious RAM like this.
Best regards,
Wolfgang Denk