Hi Wolfgang,
On Wed, Feb 8, 2012 at 10:23 AM, Wolfgang Denk wd@denx.de wrote:
Dear Dirk Behme,
In message 4F30C794.50206@de.bosch.com you wrote:
Also, if SPL can determine total SDRAM, copy U-Boot to the final location and perform the relocations, there is no need for relocation to be done by U-Boot. As I understand it, SPL loads U-Boot into a fixed address and then U-Boot copies itself to top-of-RAM. We can save one copy
Yes, exactly, saving this one copy was the the reason for me to start this thread.
Is nobody _reading_ what I try to explain again and again and again?
If SPL was to determing the relocation address, it would also have to read the environment, because there are a number of environment variables which can cause (dynamically) the relocation address to change.
But this is not neccessarily the case for every board (or even every arch)
For those boards/arches which CAN calculate the relocation address (either because it is fixed do to npn-variable RAM size, or fixed in relation to the maximum RAM address) why should we prohibit a method of skipping the redundant copy operation in a way which is 100% transparent to everyone else?
Regards,
Graeme