Commit 74ddcdb8 authored Dec 21, 2012 by Rob Herring Committed by Russell King Jan 02, 2013

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>

parent 4a490b78

arch/arm/mm/cache-l2x0.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -352,6 +352,7 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask)
		/* Unmapped register. */
		sync_reg_offset = L2X0_DUMMY_REG;
		#endif
		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:

Admin message