tree c2fff3c27b8602ce3e9d49abb9c42daba10f20d4
parent d248220f0465b818887baa9829e691fe662b2c5e
author Srinivas Ramana <sramana@codeaurora.org> 1475244211 +0100
committer Russell King <rmk+kernel@armlinux.org.uk> 1475435114 +0100

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 dbece45894d3a ("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: dbece45894d3 ("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>