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-rw-r--r--kernel/riscv.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/riscv.h b/kernel/riscv.h
index 0aec003..33b4335 100644
--- a/kernel/riscv.h
+++ b/kernel/riscv.h
@@ -181,6 +181,18 @@ w_mtvec(uint64 x)
asm volatile("csrw mtvec, %0" : : "r" (x));
}
+static inline void
+w_pmpcfg0(uint64 x)
+{
+ asm volatile("csrw pmpcfg0, %0" : : "r" (x));
+}
+
+static inline void
+w_pmpaddr0(uint64 x)
+{
+ asm volatile("csrw pmpaddr0, %0" : : "r" (x));
+}
+
// use riscv's sv39 page table scheme.
#define SATP_SV39 (8L << 60)