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c73686a11c
The enablement code for the PMU is scattered and difficult to track down. Factor out the feature into its own lib/extensions folder and consolidate the implementation. Treat it is as an architecturally mandatory feature as it is currently. Additionally, do some cleanup on AArch64. Setting overflow bits in PMCR_EL0 is irrelevant for firmware so don't do it. Then delay the PMU initialisation until the context management stage which simplifies the early environment assembly. One side effect is that the PMU might count before this happens so reset all counters to 0 to prevent any leakage. Finally, add an enable to manage_extensions_realm() as realm world uses the pmu. This introduces the HPMN fixup to realm world. Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com> Change-Id: Ie13a8625820ecc5fbfa467dc6ca18025bf6a9cd3
19 lines
334 B
C
19 lines
334 B
C
/*
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* Copyright (c) 2023, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef PMUV3_H
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#define PMUV3_H
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#include <context.h>
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void pmuv3_disable_el3(void);
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#ifdef __aarch64__
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void pmuv3_enable(cpu_context_t *ctx);
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void pmuv3_init_el2_unused(void);
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#endif /* __aarch64__ */
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#endif /* PMUV3_H */
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