diff options
Diffstat (limited to 'machine')
| -rw-r--r-- | machine/minit.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/machine/minit.c b/machine/minit.c index 953e1ba..b8c9eac 100644 --- a/machine/minit.c +++ b/machine/minit.c @@ -191,13 +191,14 @@ static inline void setup_pmp(void) // Set up a PMP to permit access to all of memory. // Ignore the illegal-instruction trap if PMPs aren't supported. uintptr_t pmpc = PMP_NAPOT | PMP_R | PMP_W | PMP_X; + uintptr_t pmpa = ((uintptr_t)1 << (__riscv_xlen == 32 ? 31 : 53)) - 1; asm volatile ("la t0, 1f\n\t" "csrrw t0, mtvec, t0\n\t" "csrw pmpaddr0, %1\n\t" "csrw pmpcfg0, %0\n\t" ".align 2\n\t" "1: csrw mtvec, t0" - : : "r" (pmpc), "r" (-1UL) : "t0"); + : : "r" (pmpc), "r" (pmpa) : "t0"); } void enter_supervisor_mode(void (*fn)(uintptr_t), uintptr_t arg0, uintptr_t arg1) |