Wipe the PMP configuration in MPFS bootloader start routine

This way old PMP configurations are removed upon warm reset.
2022-01-14 11:49:07 +02:00 · 2022-01-14 11:49:07 +02:00 · fc3cd308d5
commit fc3cd308d5
parent 81188d9c94
1 changed files with 4 additions and 0 deletions
--- a/arch/risc-v/src/mpfs/mpfs_head.S
+++ b/arch/risc-v/src/mpfs/mpfs_head.S
@ -192,6 +192,10 @@ __start:

 .continue_boot:

+    /* Clear PMP */
+
+    csrw pmpcfg0, zero
+    csrw pmpcfg2, zero
 #endif

  /* Set stack pointer to the idle thread stack */