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authorAndreas Huber <andreas.huber@keymile.com>2011-01-25 11:26:15 +0100
committerWolfgang Denk <wd@denx.de>2011-04-11 22:41:37 +0200
commit91a3c14cd0edb7cf427eb025ae25920c8546767c (patch)
tree41bb688d771f22cf1d624ddce7ac9861f9c39536
parent086f09150d88a9bfe01b697900dcada6056d854f (diff)
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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>
-rw-r--r--board/keymile/mgcoge/mgcoge.c18
-rw-r--r--include/configs/mgcoge.h5
2 files changed, 23 insertions, 0 deletions
diff --git a/board/keymile/mgcoge/mgcoge.c b/board/keymile/mgcoge/mgcoge.c
index 5c9496c..5dcdf37 100644
--- 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 6dec0ee..f1bd32a 100644
--- 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 */