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359b706473
As we detect more architectural features at runtime, it makes sense to reuse the existing framework whilst avoiding to call a feature an erratum... This patch extract the core capability parsing, moves it into a new file (cpufeature.c), and let the CPU errata detection code use it. Reviewed-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
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* Contains CPU feature definitions
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*
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* Copyright (C) 2015 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define pr_fmt(fmt) "alternatives: " fmt
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#include <linux/types.h>
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#include <asm/cpu.h>
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#include <asm/cpufeature.h>
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static const struct arm64_cpu_capabilities arm64_features[] = {
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{},
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};
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void check_cpu_capabilities(const struct arm64_cpu_capabilities *caps,
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const char *info)
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{
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int i;
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for (i = 0; caps[i].desc; i++) {
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if (!caps[i].matches(&caps[i]))
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continue;
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if (!cpus_have_cap(caps[i].capability))
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pr_info("%s %s\n", info, caps[i].desc);
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cpus_set_cap(caps[i].capability);
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}
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}
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void check_local_cpu_features(void)
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{
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check_cpu_capabilities(arm64_features, "detected feature");
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}
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