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| author | Matthew Leach <matthew.leach@arm.com> | 2012-09-11 17:56:57 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-09-16 00:16:16 +0100 |
| commit | e1e5b7e4251c7538ca08c2c5545b0c2fbd8a6635 (patch) | |
| tree | 3c98653fb149c9b8646922f6c7091d414e4a1b1d /arch/arm/boot/compressed/head.S | |
| parent | 3f0c3c8fe30c725c1264fb6db8cc4b69db3a658a (diff) | |
| download | linux-e1e5b7e4251c7538ca08c2c5545b0c2fbd8a6635.tar.gz | |
ARM: 7532/1: decompressor: reset SCTLR.TRE for VMSA ARMv7 cores
This patch zeroes the SCTLR.TRE bit prior to setting the mapping as cacheable for ARMv7 cores in the decompressor, ensuring that the memory region attributes are obtained from the C and B bits, not from the page tables. Cc: Nicolas Pitre <nico@fluxnic.net> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Matthew Leach <matthew.leach@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 81769c1341fa..bc67cbff3944 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -653,6 +653,7 @@ __armv7_mmu_cache_on: mcrne p15, 0, r0, c8, c7, 0 @ flush I,D TLBs #endif mrc p15, 0, r0, c1, c0, 0 @ read control reg + bic r0, r0, #1 << 28 @ clear SCTLR.TRE orr r0, r0, #0x5000 @ I-cache enable, RR cache replacement orr r0, r0, #0x003c @ write buffer #ifdef CONFIG_MMU |