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lib: sbi: Fix initial value mask while updating the counters

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The first 32 bits of the initial value for the counter should be
preserved while updating the mhpmcounter for 32bit.

Fixes: 13d40f21d5 ("lib: sbi: Add PMU support")
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Atish Patra
2021-11-08 10:53:07 -08:00
committed by Anup Patel
parent 15906a3984
commit b8845e4204
1 changed files with 1 additions and 1 deletions
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2
lib/sbi/sbi_pmu.c
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@@ -270,7 +270,7 @@ static void pmu_ctr_write_hw(uint32_t cidx, uint64_t ival)
{
#if __riscv_xlen == 32
csr_write_num(CSR_MCYCLE + cidx, 0);
csr_write_num(CSR_MCYCLE + cidx, ival & 0xFFFF);
csr_write_num(CSR_MCYCLE + cidx, ival & 0xFFFFFFFF);
csr_write_num(CSR_MCYCLEH + cidx, ival >> BITS_PER_LONG);
#else
csr_write_num(CSR_MCYCLE + cidx, ival);