From f97e4b53e4064ae4e7807a1aac74c5d92aea7666 Mon Sep 17 00:00:00 2001
From: Gleb Gagarin <gleb@sifive.com>
Date: Wed, 21 Feb 2018 16:20:12 -0800
Subject: [PATCH] Try to zero out ROM

---
 src/target/riscv/riscv-013.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/target/riscv/riscv-013.c b/src/target/riscv/riscv-013.c
index 68f6b3ba1..c05d9fc23 100644
--- a/src/target/riscv/riscv-013.c
+++ b/src/target/riscv/riscv-013.c
@@ -2224,6 +2224,10 @@ int riscv013_test_compliance(struct target *target) {
   uint32_t testvar;
   riscv_reg_t value;
 
+  LOG_INFO("Trying to write zeroes into Debug ROM");
+  uint8_t b[100] = {};
+  write_memory(target, 0x800, 4, 24, b);
+
   dmcontrol = set_field(dmcontrol_orig, hartsel_mask(target), RISCV_MAX_HARTS-1);
   dmi_write(target, DMI_DMCONTROL, dmcontrol);
   dmcontrol = dmi_read(target, DMI_DMCONTROL);