1 files changed, 25 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/mvme2307/nvram/nvram.c b/c/src/lib/libbsp/powerpc/mvme2307/nvram/nvram.c
new file mode 100644
index 0000000000..124f81eada
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/mvme2307/nvram/nvram.c
@@ -0,0 +1,25 @@
+#include <bsp.h>
+
+#define ram_addr_low  (* (volatile char *) IO_TO_LOCAL(0x0074))
+#define ram_addr_high (* (volatile char *) IO_TO_LOCAL(0x0075))
+#define ram_data      (* (volatile char *) IO_TO_LOCAL(0x0077))
+#define ram_end_addr  0x1ff8
+
+int read_nvram(char *buff, int offset, int len) {
+    int i;
+
+    if (offset < 0 || offset >= ram_end_addr) {
+        return 0;
+    }
+    if (offset + len > ram_end_addr) {
+        len = ram_end_addr - offset;
+    }
+    for (i = 0; i < len; i++) {
+        ram_addr_high = offset >> 8;
+        ram_addr_low  = offset;
+        *buff++ = ram_data;
+        offset++;
+    }
+    return len;
+}
+