Merge branch 'riscv64-pmp' into 'master'

riscv64-nemu,cte: set PMP before entering S-mode See merge request projectn/nexus-am!33
2020-03-10 17:11:41 +08:00 · 2020-03-10 17:11:41 +08:00 · ee66350b06
parent c4bf428536 c297b3bce5
commit ee66350b06
1 changed files with 4 additions and 0 deletions
--- a/am/src/nemu/isa/riscv/cte64.c
+++ b/am/src/nemu/isa/riscv/cte64.c
@ -37,6 +37,10 @@ void __am_init_cte64() {
  asm volatile("csrw mideleg, %0" : : "r"(0xffff));
  asm volatile("csrw medeleg, %0" : : "r"(0xffff));

+  // set PMP to access all memory in S-mode
+  asm volatile("csrw pmpaddr0, %0" : : "r"(-1));
+  asm volatile("csrw pmpcfg0, %0" : : "r"(31));
+
  init_timer();

  // enter S-mode