able to set the clock speed in MHz.

1 files changed, 20 insertions, 0 deletions

diff --git a/system-clock/include/flash.h b/system-clock/include/flash.h
new file mode 100644
index 0000000..ac63bf9
--- /dev/null
+++ b/system-clock/include/flash.h
@@ -0,0 +1,20 @@
+#ifndef H__FLASH_
+#define H__FLASH_
+
+#include "common.h"
+
+/*
+ * Header file for dealing with flash.
+ */
+
+#define FLASH_BASE      0x40022000
+
+typedef struct {
+  __IO uint32_t ac_r; /* Flash access control register. */
+
+  /* TODO fill out the rest. */
+} PACKED flash_t;
+
+#define FLASH (*(__IO flash_t*) FLASH_BASE)
+
+#endif /* H__FLASH_ */