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

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

Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com>
Acked-by: Marc Carino <marc.ceeeee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Gregory Fong 2014-07-23 00:34:23 +01:00 committed by Russell King
parent c51e78ed58
commit 04fcab32d3
1 changed files with 12 additions and 8 deletions
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20
arch/arm/kernel/smp_tlb.c
View file

@ -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;
}
if (revidr & 0x10)
erratum_a15_798181_handler = erratum_a15_798181_partial;
else
/* 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;
else
erratum_a15_798181_handler =
erratum_a15_798181_broadcast;
}
}
#endif