diff options
| author | Xiang W <wxjstz@126.com> | 2021-11-08 17:43:03 +0800 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2021-11-12 12:19:00 +0530 |
| commit | d335a178d8cfdf2ed13af70fe385f7e38162e171 (patch) | |
| tree | 4b4e98c302251875500b14e4ee314dd0e87d0274 | |
| parent | f3744967c6b595c0caba164468b4b32b9c027dfd (diff) | |
lib: sbi: clear pmpcfg.A before setting in pmp_set()
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>
| -rw-r--r-- | lib/sbi/riscv_asm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sbi/riscv_asm.c b/lib/sbi/riscv_asm.c index 25b40cf..1642ac6 100644 --- a/lib/sbi/riscv_asm.c +++ b/lib/sbi/riscv_asm.c @@ -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); |