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

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

Fixes: 13d40f21d588e ("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>
Atish Patra 2 лет назад
Родитель
Сommit
b8845e4204
1 измененных файлов с 1 добавлено и 1 удалено
  1. 1 1
      lib/sbi/sbi_pmu.c

+ 1 - 1
lib/sbi/sbi_pmu.c

@@ -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);