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| author | Rob Herring <rob.herring@calxeda.com> | 2012-12-21 22:42:39 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-01-02 10:34:56 +0000 |
| commit | 74ddcdb868a84f4a9f65e33c1ca0d24e1134e53a (patch) | |
| tree | fbcc96fb7e28648990df5d9933149236be98088f /arch | |
| parent | 4a490b78cb7e0e5efa44425df72a9fedc1c36366 (diff) | |
| download | linux-74ddcdb868a84f4a9f65e33c1ca0d24e1134e53a.tar.gz linux-74ddcdb868a84f4a9f65e33c1ca0d24e1134e53a.tar.bz2 linux-74ddcdb868a84f4a9f65e33c1ca0d24e1134e53a.zip | |
ARM: 7608/1: l2x0: Only set .set_debug on PL310 r3p0 and earlier
PL310 errata work-arounds using .set_debug function are only needed on
r3p0 and earlier, so check the rev and only set .set_debug on older revs.
Avoiding debug register accesses fixes aborts on non-secure platforms
like highbank. It is assumed that non-secure platforms needing these
work-arounds have already implemented .set_debug with secure monitor
calls.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mm/cache-l2x0.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index 6911b8b2745c..05d577613b13 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -352,7 +352,8 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask) /* Unmapped register. */ sync_reg_offset = L2X0_DUMMY_REG; #endif - outer_cache.set_debug = pl310_set_debug; + if ((cache_id & L2X0_CACHE_ID_RTL_MASK) <= L2X0_CACHE_ID_RTL_R3P0) + outer_cache.set_debug = pl310_set_debug; break; case L2X0_CACHE_ID_PART_L210: ways = (aux >> 13) & 0xf; |