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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-08-06 18:13:54 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-08-06 18:13:54 +0100 |
| commit | 11e4afb49b7fa1fc8e1ffd850c1806dd86a08204 (patch) | |
| tree | 9e57efcb106ae912f7bec718feb3f8ec607559bb /arch/arm/mm/abort-ev7.S | |
| parent | 162500b3a3ff39d941d29db49b41a16667ae44f0 (diff) | |
| parent | 9b2a606d3898fcb2eedb6faded3bb37549590ac4 (diff) | |
Merge branches 'gemini' and 'misc' into devel
Diffstat (limited to 'arch/arm/mm/abort-ev7.S')
| -rw-r--r-- | arch/arm/mm/abort-ev7.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mm/abort-ev7.S b/arch/arm/mm/abort-ev7.S index 2e6dc040c65..ec88b157d3b 100644 --- a/arch/arm/mm/abort-ev7.S +++ b/arch/arm/mm/abort-ev7.S @@ -29,5 +29,26 @@ ENTRY(v7_early_abort) * V6 code adjusts the returned DFSR. * New designs should not need to patch up faults. */ + +#if defined(CONFIG_VERIFY_PERMISSION_FAULT) + /* + * Detect erroneous permission failures and fix + */ + ldr r3, =0x40d @ On permission fault + and r3, r1, r3 + cmp r3, #0x0d + movne pc, lr + + mcr p15, 0, r0, c7, c8, 0 @ Retranslate FAR + isb + mrc p15, 0, r2, c7, c4, 0 @ Read the PAR + and r3, r2, #0x7b @ On translation fault + cmp r3, #0x0b + movne pc, lr + bic r1, r1, #0xf @ Fix up FSR FS[5:0] + and r2, r2, #0x7e + orr r1, r1, r2, LSR #1 +#endif + mov pc, lr ENDPROC(v7_early_abort) |