From 0a605c85f93dcaa3687c3184d9c09024c7b7c444 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Thu, 15 Sep 2011 20:18:44 -0300
Subject: [PATCH] m1rc3/norruption/peek: new tool to quickly check for
 corruption at low addresses

---
 m1rc3/norruption/peek | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100755 m1rc3/norruption/peek

diff --git a/m1rc3/norruption/peek b/m1rc3/norruption/peek
new file mode 100755
index 0000000..6c917d1
--- /dev/null
+++ b/m1rc3/norruption/peek
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+#
+# peek - retrieve the first 256 NOR bytes via JTAG, then compare them with
+#        the reference standby bitstream
+#
+
+jtag -q <<EOF
+cable milkymist
+detect
+instruction CFG_OUT 000100 BYPASS
+instruction CFG_IN 000101 BYPASS
+pld load fjmem.bit
+initbus fjmem opcode=000010
+frequency 6000000
+detectflash 0
+endian big
+readmem 0 0x100 peek.bin
+pld reconfigure
+EOF
+
+diff -u \
+  <(dd if=standby.fpg bs=256 count=1 | hexdump -C) \
+  <(hexdump -C peek.bin)