From 9e67c0e4235ec575f44255f9459bcf24941be594 Mon Sep 17 00:00:00 2001
From: kc8apf <kc8apf@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Date: Thu, 11 Dec 2008 19:03:17 +0000
Subject: [PATCH] AXM0432 layout for FDTI provided by Alan Carvalho de Assis
 (Freescale)

git-svn-id: svn://svn.berlios.de/openocd/trunk@1226 b42882b7-edfa-0310-969c-e2dbd0fdcd60
---
 src/jtag/ft2232.c | 112 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)

diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c
index 47376241b..35275f5fe 100644
--- a/src/jtag/ft2232.c
+++ b/src/jtag/ft2232.c
@@ -102,6 +102,7 @@ int flyswatter_init(void);
 int turtle_init(void);
 int comstick_init(void);
 int stm32stick_init(void);
+int axm0432_jtag_init(void);
 
 /* reset procedures for supported layouts */
 void usbjtag_reset(int trst, int srst);
@@ -111,6 +112,8 @@ void flyswatter_reset(int trst, int srst);
 void turtle_reset(int trst, int srst);
 void comstick_reset(int trst, int srst);
 void stm32stick_reset(int trst, int srst);
+void axm0432_jtag_reset(int trst, int srst);
+
 
 /* blink procedures for layouts that support a blinking led */
 void olimex_jtag_blink(void);
@@ -129,6 +132,7 @@ ft2232_layout_t ft2232_layouts[] =
 	{"turtelizer2", turtle_init, turtle_reset, turtle_jtag_blink},
 	{"comstick", comstick_init, comstick_reset, NULL},
 	{"stm32stick", stm32stick_init, stm32stick_reset, NULL},
+	{"axm0432_jtag", axm0432_jtag_init, axm0432_jtag_reset, NULL},
 	{NULL, NULL, NULL},
 };
 
@@ -1045,6 +1049,38 @@ void olimex_jtag_reset(int trst, int srst)
 	LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
 }
 
+
+void axm0432_jtag_reset(int trst, int srst)
+{
+	if (trst == 1)
+	{
+		cur_state = TAP_TLR;
+		high_output &= ~nTRST;
+	}
+	else if (trst == 0)
+	{
+		high_output |= nTRST;
+	}
+
+    if (srst == 1)
+    {
+            high_output &= ~nSRST;
+    }
+    else if (srst == 0)
+    {
+            high_output |= nSRST;
+    }
+
+    /* command "set data bits low byte" */
+    BUFFER_ADD = 0x82;
+    BUFFER_ADD = high_output;
+    BUFFER_ADD = high_direction;
+    LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
+}
+
+
+
+
 void flyswatter_reset(int trst, int srst)
 {
 	if (trst == 1)
@@ -1722,6 +1758,82 @@ int usbjtag_init(void)
 	return ERROR_OK;
 }
 
+
+int axm0432_jtag_init(void)
+{
+	u8 buf[3];
+        u8 buf_read[1];
+	u32 bytes_written;
+        u32 bytes_read;
+	
+	low_output = 0x08;
+	low_direction = 0x2b;
+	
+	/* initialize low byte for jtag */
+	buf[0] = 0x80; /* command "set data bits low byte" */
+	buf[1] = low_output; /* value (TMS=1,TCK=0, TDI=0, nOE=0) */
+	buf[2] = low_direction; /* dir (output=1), TCK/TDI/TMS=out, TDO=in, nOE=out */
+	LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
+	
+	if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
+	{
+		LOG_ERROR("couldn't initialize FT2232 with 'JTAGkey' layout"); 
+		return ERROR_JTAG_INIT_FAILED;
+	}
+
+      
+	if (strcmp(layout->name, "axm0432_jtag") == 0)
+	{
+		nTRST = 0x08;
+		nTRSTnOE = 0x0;  /* No output enable for TRST*/
+		nSRST = 0x04;
+		nSRSTnOE = 0x0;  /* No output enable for SRST*/ 
+	}
+	else
+	{
+		LOG_ERROR("BUG: axm0432_jtag_init called for non axm0432 layout");
+		exit(-1);
+	}
+	
+	high_output = 0x0;
+	high_direction = 0x0c;
+
+        if (jtag_reset_config & RESET_TRST_OPEN_DRAIN)
+	{
+                LOG_ERROR("can't set nTRSTOE to push-pull on the Dicarlo jtag");
+        }
+	else
+	{
+		high_output |= nTRST;
+	}
+
+        if (jtag_reset_config & RESET_SRST_PUSH_PULL)
+	{
+		LOG_ERROR("can't set nSRST to push-pull on the Dicarlo jtag");
+	}
+	else
+	{
+		high_output |= nSRST;
+	}
+	
+	/* initialize high port */
+	buf[0] = 0x82; /* command "set data bits high byte" */
+	buf[1] = high_output; /* value */
+	buf[2] = high_direction;   /* all outputs (xRST and xRSTnOE) */
+	LOG_DEBUG("%2.2x %2.2x %2.2x", buf[0], buf[1], buf[2]);
+	
+	if (((ft2232_write(buf, 3, &bytes_written)) != ERROR_OK) || (bytes_written != 3))
+	{
+		LOG_ERROR("couldn't initialize FT2232 with 'Dicarlo' layout"); 
+		return ERROR_JTAG_INIT_FAILED;
+	}
+	
+	return ERROR_OK;
+}
+
+
+
+
 int jtagkey_init(void)
 {
 	u8 buf[3];