Enrico Scholz 19bc427e44 ARM v7: fix mmu-off operation ... Although conclusions in 50d1b2de8e "ARM v7: Fix register corruption in v7_mmu_cache_off" are correct, the implemented fix is not complete because the following failure can happen: 1. d-cache contains the cache line around 'sp' 2. v7_mmu_cache_off() disables cache 3. early v7_mmu_cache_flush() pushes 'lr' on uncached stack 4. v7_mmu_cache_flush() flushes d-cache and can override stack written by step 3. 5. v7_mmu_cache_flush() pops 'lr' out of cache and jumps to it which might be random data now. Patch avoids step 3 which is easy because 'lr' is never modified by the function. By using the 'r12' scratch register instead of 'r10', the whole initial 'push' can be avoided. Patch moves also the 'DMB' operation so that it is executed after data has been pushed on stack. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>		2013-05-17 10:23:42 +02:00
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arm	ARM v7: fix mmu-off operation	2013-05-17 10:23:42 +02:00
blackfin	blackfin: initialize malloc pool before start_barebox()	2013-03-14 08:41:27 +01:00
mips	Remove unused config.h	2013-04-09 08:42:52 +02:00
nios2	nios: initialize malloc pool before start_barebox()	2013-03-14 08:41:20 +01:00
openrisc	openrisc: initialize malloc pool before start_barebox()	2013-03-14 08:41:23 +01:00
ppc	Merge branch 'for-next/oftree'	2013-04-04 14:20:32 +02:00
sandbox	Remove unused config.h	2013-04-09 08:42:52 +02:00
x86	Remove unused config.h	2013-04-09 08:42:52 +02:00
architecture.dox	MIPS: add documentation	2011-08-05 18:20:17 +02:00