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lib: sbi: Allow programmable counters to monitor cycle/instret events

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A platform may use programmable counters for cycle/instret events.
The priv spec allows that provided that cycle/instret also report those
events in addition to the programmable counters. We should allow that
functionality in OpenSBI.

Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Atish Patra
2021-11-08 10:53:02 -08:00
committed by Anup Patel
parent 2363f950bc
commit 0c304b6619
2 changed files with 49 additions and 20 deletions
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1
include/sbi/sbi_pmu.h
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@@ -26,6 +26,7 @@
#define SBI_PMU_FW_CTR_MAX 16
#define SBI_PMU_HW_CTR_MAX 32
#define SBI_PMU_CTR_MAX (SBI_PMU_HW_CTR_MAX + SBI_PMU_FW_CTR_MAX)
#define SBI_PMU_FIXED_CTR_MASK 0x07
/** Initialize PMU */
int sbi_pmu_init(struct sbi_scratch *scratch, bool cold_boot);