ce870f33b6
Currently we call the (optional) enable function for CPU _features_ only. As CPU _errata_ descriptions share the same data structure and having an enable function is useful for errata as well (for instance to set bits in SCTLR), lets call it when enumerating erratas too. Change-Id: Ie5d4d14dc1c0006423196e9fc1b102655f0c13b2 Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Git-commit: 8e2318521bf5837dae093413f81292b59d49d030 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git [sramana@codeaurora.org: Resolve trivial merge conflicts] Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* Contains CPU specific errata definitions
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*
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* Copyright (C) 2014 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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#include <linux/types.h>
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#include <asm/cpu.h>
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#include <asm/cputype.h>
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#include <asm/cpufeature.h>
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static bool __maybe_unused
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is_affected_midr_range(const struct arm64_cpu_capabilities *entry)
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{
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return MIDR_IS_CPU_MODEL_RANGE(read_cpuid_id(), entry->midr_model,
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entry->midr_range_min,
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entry->midr_range_max);
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}
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#define MIDR_RANGE(model, min, max) \
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.matches = is_affected_midr_range, \
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.midr_model = model, \
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.midr_range_min = min, \
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.midr_range_max = max
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const struct arm64_cpu_capabilities arm64_errata[] = {
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#if defined(CONFIG_ARM64_ERRATUM_826319) || \
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defined(CONFIG_ARM64_ERRATUM_827319) || \
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defined(CONFIG_ARM64_ERRATUM_824069)
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{
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/* Cortex-A53 r0p[012] */
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.desc = "ARM errata 826319, 827319, 824069",
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.capability = ARM64_WORKAROUND_CLEAN_CACHE,
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MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x02),
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},
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#endif
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#ifdef CONFIG_ARM64_ERRATUM_819472
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{
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/* Cortex-A53 r0p[01] */
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.desc = "ARM errata 819472",
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.capability = ARM64_WORKAROUND_CLEAN_CACHE,
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MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x01),
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},
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#endif
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#ifdef CONFIG_ARM64_ERRATUM_832075
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{
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/* Cortex-A57 r0p0 - r1p2 */
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.desc = "ARM erratum 832075",
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.capability = ARM64_WORKAROUND_DEVICE_LOAD_ACQUIRE,
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MIDR_RANGE(MIDR_CORTEX_A57, 0x00,
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(1 << MIDR_VARIANT_SHIFT) | 2),
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},
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#endif
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#ifdef CONFIG_ARM64_ERRATUM_834220
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{
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/* Cortex-A57 r0p0 - r1p2 */
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.desc = "ARM erratum 834220",
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.capability = ARM64_WORKAROUND_834220,
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MIDR_RANGE(MIDR_CORTEX_A57, 0x00,
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(1 << MIDR_VARIANT_SHIFT) | 2),
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},
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#endif
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#ifdef CONFIG_ARM64_ERRATUM_845719
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{
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/* Cortex-A53 r0p[01234] */
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.desc = "ARM erratum 845719",
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.capability = ARM64_WORKAROUND_845719,
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MIDR_RANGE(MIDR_CORTEX_A53, 0x00, 0x04),
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},
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{
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/* Kryo2xx Silver rAp4 */
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.desc = "Kryo2xx Silver erratum 845719",
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.capability = ARM64_WORKAROUND_845719,
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MIDR_RANGE(MIDR_KRYO2XX_SILVER, 0xA00004, 0xA00004),
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},
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#endif
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#ifdef CONFIG_CAVIUM_ERRATUM_23154
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{
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/* Cavium ThunderX, pass 1.x */
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.desc = "Cavium erratum 23154",
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.capability = ARM64_WORKAROUND_CAVIUM_23154,
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MIDR_RANGE(MIDR_THUNDERX, 0x00, 0x01),
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},
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#endif
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#ifdef CONFIG_CAVIUM_ERRATUM_27456
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{
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/* Cavium ThunderX, T88 pass 1.x - 2.1 */
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.desc = "Cavium erratum 27456",
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.capability = ARM64_WORKAROUND_CAVIUM_27456,
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MIDR_RANGE(MIDR_THUNDERX, 0x00,
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(1 << MIDR_VARIANT_SHIFT) | 1),
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},
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#endif
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{
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}
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};
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void check_local_cpu_errata(void)
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{
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update_cpu_capabilities(arm64_errata, "enabling workaround for");
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}
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void __init enable_errata_workarounds(void)
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{
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enable_cpu_capabilities(arm64_errata);
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}
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