linux/arch/arm/boot/compressed
Will Deacon dbece45894 ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores
When enabling the MMU for ARMv7 CPUs, the decompressor does not touch
the ttbcr register, assuming that it will be zeroed (N == 0, EAE == 0).
Given that only EAE is defined as 0 for non-secure copies of the
register (and a bootloader such as kexec may leave it set to 1 anyway),
we should ensure that we reset the register ourselves before turning on
the MMU.

This patch zeroes TTBCR.EAE and TTBCR.N prior to enabling the MMU for
ARMv7 cores in the decompressor, configuring us exclusively for 32-bit
translation tables via TTBR0.

Cc: <stable@vger.kernel.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-25 09:15:56 +01:00
..
.gitignore ARM: 7001/2: Wire up support for the XZ decompressor 2012-03-24 09:38:52 +00:00
atags_to_fdt.c ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE 2012-07-09 17:39:39 +01:00
big-endian.S
decompress.c ARM: 7001/2: Wire up support for the XZ decompressor 2012-03-24 09:38:52 +00:00
head-sa1100.S Nicolas Pitre has a new email address 2009-09-15 09:37:12 -07:00
head-shark.S
head-sharpsl.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head-shmobile.S ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
head-vt8500.S ARM: 6597/1: Add basic architecture support for VIA/WonderMedia 85xx SoC's 2011-01-25 15:07:01 +00:00
head-xscale.S ARM: remove ixp23xx and ixp2000 platforms 2012-04-06 08:26:18 -05:00
head.S ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores 2012-08-25 09:15:56 +01:00
libfdt_env.h ARM: zImage: allow supplementing appended DTB with traditional ATAG data 2011-09-14 13:51:59 -04:00
ll_char_wr.S [ARM] Remove LOADREGS macro 2006-06-25 11:23:45 +01:00
Makefile ARM: 7001/2: Wire up support for the XZ decompressor 2012-03-24 09:38:52 +00:00
misc.c ARM: zImage: gather some string functions into string.c 2011-09-14 13:51:58 -04:00
mmcif-sh7372.c mmc: sdhi, mmcif: zboot: Correct clock disable logic 2011-08-08 16:38:04 +09:00
ofw-shark.c [ARM] 2922/1: compile fix for shark 2005-09-20 16:21:42 +01:00
piggy.gzip.S arm: add support for LZO-compressed kernels 2010-01-11 09:34:05 -08:00
piggy.lzma.S ARM: 6026/1: ARM: Add support for LZMA-compressed kernel images 2010-04-14 12:05:36 +01:00
piggy.lzo.S arm: add support for LZO-compressed kernels 2010-01-11 09:34:05 -08:00
piggy.xzkern.S ARM: 7001/2: Wire up support for the XZ decompressor 2012-03-24 09:38:52 +00:00
sdhi-sh7372.c mmc: sdhi, mmcif: zboot: Correct clock disable logic 2011-08-08 16:38:04 +09:00
sdhi-shmobile.c ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
sdhi-shmobile.h ARM: 6886/1: mmc, Add zboot from eSD support for SuperH Mobile ARM 2011-06-29 10:00:52 +01:00
string.c ARM: zImage: gather some string functions into string.c 2011-09-14 13:51:58 -04:00
vmlinux.lds.in ARM: zImage: ensure it is always a multiple of 64 bits in size 2011-09-14 12:12:12 -04:00