We should clear A bits in prot variable before enabling A_NA4 or A_NAPOT. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
@@ -268,6 +268,7 @@ int pmp_set(unsigned int n, unsigned long prot, unsigned long addr,
return SBI_ENOTSUPP;
/* encode PMP config */
+ prot &= ~PMP_A;
prot |= (log2len == PMP_SHIFT) ? PMP_A_NA4 : PMP_A_NAPOT;
cfgmask = ~(0xffUL << pmpcfg_shift);
pmpcfg = (csr_read_num(pmpcfg_csr) & cfgmask);