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authorTom Rix <Tom.Rix@windriver.com>2009-05-15 23:48:36 +0200
committerWolfgang Denk <wd@denx.de>2009-06-12 20:39:50 +0200
commitde193e8e369f5f029ed3b6e2fc60341098eea766 (patch)
tree31aa3bdd8990e6f5367370c8261ee09da8634e0f
parent0c872ecd01d6782ae9d37b6eb721404a4a48f356 (diff)
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ZOOM2 Add support for debug board detection.
The logicpd web site is a good source for general information on this board. Please start looking here if the below links are broken. http://www.logicpd.com This is a pdf of the product http://www.logicpd.com/sites/default/files/1012659A_Zoom_OMAP34x-II_MDP_Brief.pdf This is a pdf of the product quick start guide. The debug board is described here. http://support.logicpd.com/downloads/1165/ This is a wiki showing the debug board in use https://omapzoom.org/gf/project/omapzoom/wiki/?pagename=GettingStartedWithZoomII_AKA_OMAP34XII_MDP The zoom2 has an auxillary board that contains the serial, net, jtag and battery simulator. This change supports a runtime check if the debug board is connected. Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
-rw-r--r--board/omap3/zoom2/Makefile3
-rw-r--r--board/omap3/zoom2/debug_board.c59
2 files changed, 61 insertions, 1 deletions
diff --git a/board/omap3/zoom2/Makefile b/board/omap3/zoom2/Makefile
index 088b8cb..b8fa5a7 100644
--- a/board/omap3/zoom2/Makefile
+++ b/board/omap3/zoom2/Makefile
@@ -25,7 +25,8 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := zoom2.o
+COBJS := zoom2.o \
+ debug_board.o
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
diff --git a/board/omap3/zoom2/debug_board.c b/board/omap3/zoom2/debug_board.c
new file mode 100644
index 0000000..a4ddf29
--- /dev/null
+++ b/board/omap3/zoom2/debug_board.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2009 Wind River Systems, Inc.
+ * Tom Rix <Tom.Rix@windriver.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+#include <common.h>
+#include <asm/arch/cpu.h>
+#include <asm/io.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/gpio.h>
+
+#define DEBUG_BOARD_CONNECTED 1
+#define DEBUG_BOARD_NOT_CONNECTED 0
+
+static int debug_board_connected = DEBUG_BOARD_CONNECTED;
+
+static void zoom2_debug_board_detect (void)
+{
+ int val = 0;
+
+ if (!omap_request_gpio(158)) {
+ /*
+ * GPIO to query for debug board
+ * 158 db board query
+ */
+ omap_set_gpio_direction(158, 1);
+ val = omap_get_gpio_datain(158);
+ omap_free_gpio(158);
+ }
+
+ if (!val)
+ debug_board_connected = DEBUG_BOARD_NOT_CONNECTED;
+}
+
+int zoom2_debug_board_connected (void)
+{
+ static int first_time = 1;
+
+ if (first_time) {
+ zoom2_debug_board_detect ();
+ first_time = 0;
+ }
+ return debug_board_connected;
+}