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* rename _end to __bss_end__Po-Yu Chuang2011-03-27-1/+1
| | | | | | | Currently, _end is used for end of BSS section. We want _end to mean end of u-boot image, so we rename _end to __bss_end__ first. Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
* Replace CONFIG_SYS_GBL_DATA_SIZE by auto-generated valueWolfgang Denk2010-10-26-0/+1
| | | | | | | | | | | | | | | | | | CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not being able to use "sizeof(struct global_data)" in assembler files. Recent experience has shown that manual synchronization is not reliable enough. This patch renames CONFIG_SYS_GBL_DATA_SIZE into GENERATED_GBL_DATA_SIZE which gets automatically generated by the asm-offsets tool. In the result, all definitions of this value can be deleted from the board config files. We have to make sure that all files that reference such data include the new <asm-offsets.h> file. No other changes have been done yet, but it is obvious that similar changes / simplifications can be done for other, related macro definitions as well. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Kumar Gala <galak@kernel.crashing.org>
* avr32: Add simple paging supportHaavard Skinnemoen2010-09-03-6/+13
| | | | | | | | | | | | | | | | | | 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>
* avr32: disable branch foldingAndreas Bießmann2010-06-29-3/+4
| | | | | | | | Due to a hardware bug mentioned in latest AP7000 datasheet errata (revision M from 09.09) branch folding is unreliable. This patch disables CPUCR.FE bitfield as stated in datasheet. Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
* avr32: Move cpu/at32ap/* to arch/avr32/cpu/*Peter Tyser2010-04-13-0/+275
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>