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Message-Id: <1405976886-27807-6-git-send-email-computersforpeace@gmail.com> Date: Mon, 21 Jul 2014 14:08:00 -0700 From: Brian Norris <computersforpeace@...il.com> To: Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net> Cc: Matt Porter <mporter@...aro.org>, Christian Daudt <bcm@...thebug.org>, Russell King <linux@....linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>, Linux Kernel <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>, Gregory Fong <gregory.0xf0@...il.com>, Brian Norris <computersforpeace@...il.com>, Florian Fainelli <f.fainelli@...il.com>, Rob Herring <rob.herring@...xeda.com>, Will Deacon <will.deacon@....com> Subject: [PATCH v8 05/11] ARM: Enable erratum 798181 for Broadcom Brahma-B15 From: Gregory Fong <gregory.0xf0@...il.com> 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@...il.com> Acked-by: Marc Carino <marc.ceeeee@...il.com> Signed-off-by: Brian Norris <computersforpeace@...il.com> Cc: Rob Herring <rob.herring@...xeda.com> Cc: Will Deacon <will.deacon@....com> --- arch/arm/kernel/smp_tlb.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c index 95d063620b76..2e72be4f623e 100644 --- a/arch/arm/kernel/smp_tlb.c +++ b/arch/arm/kernel/smp_tlb.c @@ -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 -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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