Initial revision

1 files changed, 50 insertions, 0 deletions

diff --git a/board/cogent/dipsw.c b/board/cogent/dipsw.c
new file mode 100644
index 0000000..d2027c9
--- /dev/null
+++ b/board/cogent/dipsw.c
@@ -0,0 +1,50 @@
+#include <common.h>
+#include <board/cogent/dipsw.h>
+
+unsigned char
+dipsw_raw(void)
+{
+    return cma_mb_reg_read(&((cma_mb_dipsw *)CMA_MB_DIPSW_BASE)->dip_val);
+}
+
+unsigned char
+dipsw_cooked(void)
+{
+    unsigned char val1, val2, mask1, mask2;
+
+    val1 = dipsw_raw();
+
+    /*
+     * we want to mirror the bits because the low bit is switch 1 and high
+     * bit is switch 8 and also invert them because 1=off and 0=on, according
+     * to manual.
+     *
+     * this makes the value more intuitive i.e.
+     * - left most, or high, or top, bit is left most switch (1);
+     * - right most, or low, or bottom, bit is right most switch (8)
+     * - a set bit means "on" and a clear bit means "off"
+     */
+
+    val2 = 0;
+    for (mask1 = 1 << 7, mask2 = 1; mask1 > 0; mask1 >>= 1, mask2 <<= 1)
+	if ((val1 & mask1) == 0)
+	    val2 |= mask2;
+
+    return (val2);
+}
+
+void
+dipsw_init(void)
+{
+    unsigned char val, mask;
+
+    val = dipsw_cooked();
+
+    printf("|");
+    for (mask = 1 << 7; mask > 0; mask >>= 1)
+	if (val & mask)
+	    printf("on |");
+	else
+	    printf("off|");
+    printf("\n");
+}