According to the RISC-V priv. v1.10 ISA document,
pmpaddr register stores (base_addr | (size/2 - 1)) >> 2 for a
NAPOT-encoded address.
However, the current code decodes (base_addr | (size - 1)) >> 3 which
leads to a wrong base address and size.
Signed-off-by: Dayeol Lee <day...@berkeley.edu>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com>
---
target/riscv/pmp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
index f432f3b..c4c6b09 100644
--- a/target/riscv/pmp.c
+++ b/target/riscv/pmp.c
@@ -138,7 +138,7 @@ static void pmp_decode_napot(target_ulong a, target_ulong
*sa, target_ulong *ea)
return;
} else {
target_ulong t1 = ctz64(~a);
- target_ulong base = (a & ~(((target_ulong)1 << t1) - 1)) << 3;
+ target_ulong base = (a & ~(((target_ulong)1 << t1) - 1)) << 2;
target_ulong range = ((target_ulong)1 << (t1 + 3)) - 1;
*sa = base;
*ea = base + range;
--
2.7.4
