Dear Haavard Skinnemoen,
Am 12.08.2010 08:52, schrieb Haavard Skinnemoen:
The paging system which is required to set up caching properties has not yet been initialized when the SDRAM is initialized. So when the map_physmem() function is converted to return the physical address unchanged, the SDRAM initialization will break on some boards.
The avr32-specific uncached() macro will return an address which will always cause uncached accessed to be made. Since this happens in the board code, using avr32-specific features should be ok, and will allow the SDRAM initialization to keep working.
Signed-off-by: Haavard Skinnemoen haavard.skinnemoen@atmel.com
Tested-by: Andreas Bießmann biessmann@corscience.de
one colleague reported similar problems initialising SDRAM on our own board. I could not reproduce this issue here, however this patch fixed the problem. Thanks for that, it came the right time.
This patch should be applied too.
regards
Andreas Bießmann