Support different targets. (Openmoko GTA01/02 with Dbgv3, soon c2ben.)

- f32x/Makefile: added support for building for different targets (for now,
  just TARGET=om)
- f32x/c2-drv.h: interface for C2 drivers
- f32x/c2-om.c: updated title
- f32x/c2-om.c: renamed all c2_* to om_* and made them "static"
- f32x/c2-om.c (c2_om): driver operations
- f32x/c2.c: call driver operations
- f32x/c2.h: moved protocol constants to c2-drv.h

f32x/Makefile

@@ -1,8 +1,8 @@
 #
 # f32x/Makefile - Build the C8051F326/7 Flash programmer
 #
-# Written 2008 by Werner Almesberger
-# Copyright 2008 Werner Almesberger
+# Written 2008, 2010 by Werner Almesberger
+# Copyright 2008, 2010 Werner Almesberger
 #
 # 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
@@ -11,15 +11,26 @@
 #
 
 
-CC=arm-angstrom-linux-gnueabi-gcc
-
-CFLAGS=-Wall -Wshadow -g -O
-LDFLAGS=
-
 PREFIX=/usr
 
+ifeq ($(TARGET),)
+TARGET = om
+endif
+
+CC_om = arm-angstrom-linux-gnueabi-gcc
+
+CFLAGS_om = -O -DDRIVER=c2_om
+
+LDFLAGS_om =
+
+OBJS_om = c2-om.o gpio.o rt.o
+
 NAME = f32x
-OBJS=f32x.o flash.o c2-om.o gpio.o rt.o boundary.o
+CC = $(CC_$(TARGET))
+CFLAGS = -Wall -Wshadow -g $(CFLAGS_$(TARGET))
+LDFLAGS = $(LDFLAGS_$(TARGET))
+OBJS = f32x.o flash.o c2.o boundary.o $(OBJS_$(TARGET))
+
 
 .PHONY:		all install uninstall clean depend spotless
 
@@ -45,7 +56,7 @@ include .depend
 endif
 
 clean:
-		rm -f $(OBJS) .depend
+		rm -f $(OBJS) $(OBJS_om) .depend
 
 spotless:	clean
 		rm -f $(NAME)

f32x/c2-drv.h

@@ -0,0 +1,36 @@
+/*
+ * f32x/c2-drv.h - C2 driver interface
+ *
+ * Written 2010 by Werner Almesberger
+ * Copyright 2010 Werner Almesberger
+ *
+ * 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.
+ */
+
+
+#ifndef C2_DRV_H
+#define C2_DRV_H
+
+
+#include <stdint.h>
+
+
+#define C2_DATA_READ	0
+#define C2_DATA_WRITE	1
+#define C2_ADDR_READ	2
+#define C2_ADDR_WRITE	3
+
+
+struct c2_ops {
+	void (*init)(void);
+	void (*reset)(void);
+	void (*addr_write)(uint8_t addr);
+	uint8_t (*addr_read)(void);
+	void (*data_write)(uint32_t data, int bytes);
+	uint32_t (*data_read)(int bytes) ;
+};
+
+#endif /* !C2_DRV_H */

f32x/c2-om.c

@@ -1,8 +1,8 @@
 /*
- * f32x/c2.c - Basic C2 messages
+ * f32x/c2-om.c - Basic C2 messages, driver for Openmoko GTA01/GTA02+DebugV3
  *
- * Written 2008 by Werner Almesberger
- * Copyright 2008 Werner Almesberger
+ * Written 2008, 2010 by Werner Almesberger
+ * Copyright 2008, 2010 Werner Almesberger
  *
  * 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
@@ -15,7 +15,7 @@
 #include <unistd.h>
 
 #include "gpio.h"
-#include "c2.h"
+#include "c2-drv.h"
 
 
 /*
@@ -64,7 +64,7 @@ static uint32_t c2_recv(int bits)
 /* ----- C2 Register read/write -------------------------------------------- */
 
 
-void c2_addr_write(uint8_t addr)
+static void om_addr_write(uint8_t addr)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -75,7 +75,7 @@ void c2_addr_write(uint8_t addr)
 }
 
 
-uint8_t c2_addr_read(void)
+static uint8_t om_addr_read(void)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -86,7 +86,7 @@ uint8_t c2_addr_read(void)
 }
 
 
-void c2_data_write(uint32_t data, int bytes)
+static void om_data_write(uint32_t data, int bytes)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -99,7 +99,7 @@ void c2_data_write(uint32_t data, int bytes)
 }
 
 
-uint32_t c2_data_read(int bytes)
+static uint32_t om_data_read(int bytes)
 {
     c2_pulse();
     gpio_output(C2D);
@@ -115,7 +115,7 @@ uint32_t c2_data_read(int bytes)
 /* ----- C2 initialization ------------------------------------------------- */
 
 
-void c2_init(void)
+static void om_init(void)
 {
     gpio_init();
     gpio_input(C2D);
@@ -127,7 +127,7 @@ void c2_init(void)
 }
 
 
-void c2_reset(void)
+static void om_reset(void)
 {
     gpio_input(C2D);
     gpio_low(C2CK);
@@ -136,3 +136,16 @@ void c2_reset(void)
     gpio_output(C2CK);
     gpio_high(C2CK);
 }
+
+
+/* ----- Operations -------------------------------------------------------- */
+
+
+struct c2_ops c2_om = {
+	.init		= om_init,
+	.reset		= om_reset,
+	.addr_write	= om_addr_write,
+	.addr_read	= om_addr_read,
+	.data_write	= om_data_write,
+	.data_read	= om_data_read,
+};

f32x/c2.c

@@ -0,0 +1,66 @@
+/*
+ * f32x/c2.c - Basic C2 messages
+ *
+ * Written 2010 by Werner Almesberger
+ * Copyright 2010 Werner Almesberger
+ *
+ * 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.
+ */
+
+
+#include <stdint.h>
+
+#include "c2.h"
+#include "c2-drv.h"
+
+
+static struct c2_ops *c2_ops;
+
+
+/* ----- C2 Register read/write -------------------------------------------- */
+
+
+void c2_addr_write(uint8_t addr)
+{
+	c2_ops->addr_write(addr);
+}
+
+
+uint8_t c2_addr_read(void)
+{
+	return c2_ops->addr_read();
+}
+
+
+void c2_data_write(uint32_t data, int bytes)
+{
+	c2_ops->data_write(data, bytes);
+}
+
+
+uint32_t c2_data_read(int bytes)
+{
+	return c2_ops->data_read(bytes);
+}
+
+
+/* ----- C2 initialization ------------------------------------------------- */
+
+
+void c2_init(void)
+{
+	extern struct c2_ops DRIVER;
+
+	c2_ops = &DRIVER;
+	if (c2_ops->init)
+		c2_ops->init();
+}
+
+
+void c2_reset(void)
+{
+	c2_ops->reset();
+}

f32x/c2.h

@@ -18,12 +18,6 @@
 #include <stdint.h>
 
 
-#define C2_DATA_READ	0
-#define C2_DATA_WRITE	1
-#define C2_ADDR_READ	2
-#define C2_ADDR_WRITE	3
-
-
 void c2_addr_write(uint8_t addr);
 uint8_t c2_addr_read(void);
 void c2_data_write(uint32_t data, int bytes);