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linux/arch/arm/boot/compressed
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Srinivas Ramana 117e5e9c4c ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7 
If the bootloader uses the long descriptor format and jumps to
kernel decompressor code, TTBCR may not be in a right state.
Before enabling the MMU, it is required to clear the TTBCR.PD0
field to use TTBR0 for translation table walks.

The commit dbece45894 ("ARM: 7501/1: decompressor:
reset ttbcr for VMSA ARMv7 cores") does the reset of TTBCR.N, but
doesn't consider all the bits for the size of TTBCR.N.

Clear TTBCR.PD0 field and reset all the three bits of TTBCR.N to
indicate the use of TTBR0 and the correct base address width.

Fixes: dbece45894 ("ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores")
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-10-02 20:05:14 +01:00
..
.gitignore ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile 2016-02-22 16:56:31 +00:00
atags_to_fdt.c ARM: 8025/1: Get rid of meminfo 2014-06-01 01:17:12 +01:00
big-endian.S
debug.S ARM: 7737/1: fix kernel decompressor compilation error with CONFIG_DEBUG_SEMIHOSTING 2013-06-05 23:32:24 +01:00
decompress.c lib/decompressors: use real out buf size for gunzip with kernel 2015-09-10 13:29:01 -07:00
efi-header.S ARM: add UEFI stub support 2015-12-14 10:38:21 +01:00
head-sa1100.S ARM: 7743/1: compressed/head.S: work around new binutils warning 2013-06-05 23:32:27 +01:00
head-sharpsl.S Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head-xscale.S ARM: remove ixp23xx and ixp2000 platforms 2012-04-06 08:26:18 -05:00
head.S ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7 2016-10-02 20:05:14 +01:00
libfdt_env.h libfdt: add fdt type definitions 2015-04-29 17:17:17 -05:00
ll_char_wr.S
Makefile Merge branches 'amba', 'fixes', 'misc' and 'tauros2' into for-next 2016-03-04 23:36:02 +00:00
misc.c stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG 2013-12-20 09:38:40 +01:00
piggy.S ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile 2016-02-22 16:56:31 +00:00
string.c ARM: boot: Add an implementation of strnlen for libfdt 2016-02-11 19:43:47 -06:00
vmlinux.lds.S ARM: add UEFI stub support 2015-12-14 10:38:21 +01:00