Commit 04fcab32 authored by Gregory Fong's avatar Gregory Fong Committed by Russell King
Browse files

ARM: 8111/1: Enable erratum 798181 for Broadcom Brahma-B15 



Broadcom Brahma-B15 (r0p0..r0p2) is also affected by Cortex-A15
erratum 798181, so enable the workaround for Brahma-B15.

Signed-off-by: default avatarGregory Fong <gregory.0xf0@gmail.com>
Acked-by: default avatarMarc Carino <marc.ceeeee@gmail.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent c51e78ed

arch/arm/kernel/smp_tlb.c

+12 −8
Original line number Diff line number Diff line
@@ -92,15 +92,19 @@ void erratum_a15_798181_init(void) 
	unsigned int midr = read_cpuid_id();

	unsigned int revidr = read_cpuid(CPUID_REVIDR);



	/* Cortex-A15 r0p0..r3p2 w/o ECO fix affected */

	if ((midr & 0xff0ffff0) != 0x410fc0f0 || midr > 0x413fc0f2 ||

	    (revidr & 0x210) == 0x210) {

		return;

	}

	/* Brahma-B15 r0p0..r0p2 affected

	 * Cortex-A15 r0p0..r3p2 w/o ECO fix affected */

	if ((midr & 0xff0ffff0) == 0x420f00f0 && midr <= 0x420f00f2)

		erratum_a15_798181_handler = erratum_a15_798181_broadcast;

	else if ((midr & 0xff0ffff0) == 0x410fc0f0 && midr <= 0x413fc0f2 &&

		 (revidr & 0x210) != 0x210) {

		if (revidr & 0x10)

		erratum_a15_798181_handler = erratum_a15_798181_partial;

			erratum_a15_798181_handler =

				erratum_a15_798181_partial;

		else

		erratum_a15_798181_handler = erratum_a15_798181_broadcast;

			erratum_a15_798181_handler =

				erratum_a15_798181_broadcast;

	}

}

#endif

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