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| author | Tony Lindgren <tony@atomide.com> | 2010-05-20 20:37:23 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-05-20 20:37:23 +0200 |
| commit | f6304f5804f228b6c2fea9e3dfac25c5b2db9b38 (patch) | |
| tree | 362b9b6a3bd32b868e5917a32d448ac75c5854df /arch/arm/mm/abort-ev7.S | |
| parent | Merge branch 'for_2.6.35' of git://git.pwsan.com/linux-2.6 into omap-for-linus (diff) | |
| parent | omap4: Add support for i2c init (diff) | |
| download | linux-f6304f5804f228b6c2fea9e3dfac25c5b2db9b38.tar.xz linux-f6304f5804f228b6c2fea9e3dfac25c5b2db9b38.zip | |
Merge branch 'omap4-i2c-init' into omap-for-linus
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 2e6dc040c654..ec88b157d3bb 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) |