summaryrefslogtreecommitdiff
path: root/arch/avr32/include/asm/arch-at32ap700x/mmu.h
Commit message (Collapse)AuthorAgeLines
* avr32: rename mmu.h definitionsAndreas Bießmann2015-02-17-3/+3
| | | | | | | Prefix mmu.h PAGE_xxx definitions with MMU_ in order to prevent a naming conflict with other definitions. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
* avr32: Add simple paging supportHaavard Skinnemoen2010-09-03-0/+66
Use the MMU hardware to set up 1:1 mappings between physical and virtual addresses. This allows us to bypass the cache when accessing the flash without having to do any physical-to-virtual address mapping in the CFI driver. The virtual memory mappings are defined at compile time through a sorted array of virtual memory range objects. When a TLB miss exception happens, the exception handler does a binary search through the array until it finds a matching entry and loads it into the TLB. The u-boot image itself is covered by a fixed TLB entry which is never replaced. This makes the 'saveenv' command work again on ATNGW100 and other boards using the CFI driver, hopefully without breaking any rules. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>