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-rw-r--r--cpu/nios2/epcs.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/cpu/nios2/epcs.c b/cpu/nios2/epcs.c
index fd9fd84..414c38c 100644
--- a/cpu/nios2/epcs.c
+++ b/cpu/nios2/epcs.c
@@ -210,6 +210,21 @@ static struct epcs_devinfo_t devinfo[] = {
{ 0, 0, 0, 0, 0, 0 }
};
+int epcs_reset (void)
+{
+ /* When booting from an epcs controller, the epcs bootrom
+ * code may leave the slave select in an asserted state.
+ * This causes two problems: (1) The initial epcs access
+ * will fail -- not a big deal, and (2) a software reset
+ * will cause the bootrom code to hang since it does not
+ * ensure the select is negated prior to first access -- a
+ * big deal. Here we just negate chip select and everything
+ * gets better :-)
+ */
+ epcs_cs (0); /* Negate chip select */
+ return (0);
+}
+
epcs_devinfo_t *epcs_dev_find (void)
{
unsigned char buf[4];