forked from Mirrors/opensbi
1b9e743c3d
Before the ratification of Sscofpmf, the Andes PMU extension was designed to support the sampling and filtering with hardware performance counters (zihpm), it works with the current SBI PMU extension and Linux SBI PMU driver. We implement 1) the PMU device callbacks that update the corresponding bits on custom CSRs, 2) extentions_init() to detect the hardware support of Andes PMU and initialize the per-hart PMU related CSR, and 3) pmu_init() to register PMU device and populate event mappings. Also define a andes_pmu_setup() function which is in preparation for adding default PMU mappings in andes_hpm.h Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
18 lines
378 B
Plaintext
18 lines
378 B
Plaintext
# SPDX-License-Identifier: BSD-2-Clause
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config ANDES45_PMA
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bool "Andes PMA support"
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default n
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config ANDES_SBI
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bool "Andes SBI support"
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default n
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config ANDES_PMU
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bool "Andes PMU extension (XAndesPMU) support"
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default n
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help
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Andes PMU extension supports the event counter overflow
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interrupt and mode filtering, similar to the standard
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Sscofpmf and Smcntrpmf.
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