ppc, mgcoge: add DIP switch detection

This reads the DIP switch on mgcoge. The DIP switch is connected to
the BFTICU (0x40000089) FPGA. If the DIP switch is set the environment
variable 'actual_bank' is set to 0 and starts the SW in bank0.

Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>

diff --git a/board/keymile/mgcoge/mgcoge.c b/board/keymile/mgcoge/mgcoge.c
index 5c9496c3ceef727739835f997cc78cf17e537f76..5dcdf37384d9cd093166ee0e8eb34ab03478b9b5 100644 (file)
--- a/board/keymile/mgcoge/mgcoge.c
+++ b/board/keymile/mgcoge/mgcoge.c
@@ -293,6 +293,24 @@ int checkboard(void)
        return 0;
 }
 
+#define DIPSWITCH_OFFSET 0x89
+#define DIPSWITCH_MASK   0x0f
+
+int last_stage_init(void)
+{
+       u8 dip_switch;
+       /* Dip switch */
+       dip_switch = readb(CONFIG_SYS_BFTICU_BASE + DIPSWITCH_OFFSET);
+       dip_switch &= DIPSWITCH_MASK;
+       /* dip switch 'full reset' or 'db erase' */
+       if (dip_switch & 0x1 || dip_switch & 0x2) {
+               /* start bootloader */
+               puts("DIP:   Enabled\n");
+               setenv("actual_bank", "0");
+       }
+       return 0;
+}
+
 /*
  * Early board initalization.
  */

diff --git a/include/configs/mgcoge.h b/include/configs/mgcoge.h
index 6dec0ee7403565d767548cd50a1e352915fea79b..f1bd32a31e25a746e0dbfbebc1b261edb1cbf5f5 100644 (file)
--- a/include/configs/mgcoge.h
+++ b/include/configs/mgcoge.h
@@ -348,4 +348,9 @@
 #define OF_TBCLK               (bd->bi_busfreq / 4)
 #define OF_STDOUT_PATH         "/soc/cpm/serial@11a90"
 
+/* enable last_stage_init */
+#define CONFIG_LAST_STAGE_INIT          1
+/* bfticu address */
+#define CONFIG_SYS_BFTICU_BASE          0x40000000
+
 #endif /* __CONFIG_H */