X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fembeddedice.c;h=28fe40ec0bd2c4b6086f96adb46283316c4696ed;hp=699aa96f7ac72fc22fe7efc861926941bc09a1ff;hb=333642fcff9901a8f20c02457756ca9715641139;hpb=a48a5e6d94dc98cf69d15be133ae7b8283126bbe

diff --git a/src/target/embeddedice.c b/src/target/embeddedice.c
index 699aa96f7a..28fe40ec0b 100644
--- a/src/target/embeddedice.c
+++ b/src/target/embeddedice.c
@@ -2,6 +2,12 @@
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
+ *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
  *   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     *
@@ -23,28 +29,18 @@
 
 #include "embeddedice.h"
 
-#include "armv4_5.h"
-#include "arm7_9_common.h"
-
-#include "log.h"
-#include "arm_jtag.h"
-#include "types.h"
-#include "binarybuffer.h"
-#include "target.h"
-#include "register.h"
-#include "jtag.h"
-
-#include <stdlib.h>
 
-bitfield_desc_t embeddedice_comms_ctrl_bitfield_desc[] = 
+#if 0
+static bitfield_desc_t embeddedice_comms_ctrl_bitfield_desc[] =
 {
 	{"R", 1},
 	{"W", 1},
 	{"reserved", 26},
 	{"version", 4}
 };
+#endif
 
-int embeddedice_reg_arch_info[] =
+static int embeddedice_reg_arch_info[] =
 {
 	0x0, 0x1, 0x4, 0x5,
 	0x8, 0x9, 0xa, 0xb, 0xc, 0xd,
@@ -52,42 +48,38 @@ int embeddedice_reg_arch_info[] =
 	0x2
 };
 
-char* embeddedice_reg_list[] =
+static char* embeddedice_reg_list[] =
 {
 	"debug_ctrl",
 	"debug_status",
-	
+
 	"comms_ctrl",
 	"comms_data",
-	
+
 	"watch 0 addr value",
 	"watch 0 addr mask",
 	"watch 0 data value",
 	"watch 0 data mask",
 	"watch 0 control value",
 	"watch 0 control mask",
-	
+
 	"watch 1 addr value",
 	"watch 1 addr mask",
 	"watch 1 data value",
 	"watch 1 data mask",
 	"watch 1 control value",
 	"watch 1 control mask",
-	
+
 	"vector catch"
 };
 
-int embeddedice_reg_arch_type = -1;
-
-int embeddedice_get_reg(reg_t *reg);
-int embeddedice_set_reg(reg_t *reg, u32 value);
-int embeddedice_set_reg_w_exec(reg_t *reg, u8 *buf);
+static int embeddedice_reg_arch_type = -1;
 
-int embeddedice_write_reg(reg_t *reg, u32 value);
-int embeddedice_read_reg(reg_t *reg);
+static int embeddedice_get_reg(reg_t *reg);
 
 reg_cache_t* embeddedice_build_reg_cache(target_t *target, arm7_9_common_t *arm7_9)
 {
+	int retval;
 	reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
 	reg_t *reg_list = NULL;
 	embeddedice_reg_t *arch_info = NULL;
@@ -95,26 +87,26 @@ reg_cache_t* embeddedice_build_reg_cache(target_t *target, arm7_9_common_t *arm7
 	int num_regs;
 	int i;
 	int eice_version = 0;
-	
+
 	/* register a register arch-type for EmbeddedICE registers only once */
 	if (embeddedice_reg_arch_type == -1)
 		embeddedice_reg_arch_type = register_reg_arch_type(embeddedice_get_reg, embeddedice_set_reg_w_exec);
-	
+
 	if (arm7_9->has_vector_catch)
 		num_regs = 17;
 	else
 		num_regs = 16;
-		
+
 	/* the actual registers are kept in two arrays */
 	reg_list = calloc(num_regs, sizeof(reg_t));
 	arch_info = calloc(num_regs, sizeof(embeddedice_reg_t));
-	
+
 	/* fill in values for the reg cache */
 	reg_cache->name = "EmbeddedICE registers";
 	reg_cache->next = NULL;
 	reg_cache->reg_list = reg_list;
 	reg_cache->num_regs = num_regs;
-	
+
 	/* set up registers */
 	for (i = 0; i < num_regs; i++)
 	{
@@ -130,13 +122,22 @@ reg_cache_t* embeddedice_build_reg_cache(target_t *target, arm7_9_common_t *arm7
 		arch_info[i].addr = embeddedice_reg_arch_info[i];
 		arch_info[i].jtag_info = jtag_info;
 	}
-	
+
 	/* identify EmbeddedICE version by reading DCC control register */
 	embeddedice_read_reg(&reg_list[EICE_COMMS_CTRL]);
-	jtag_execute_queue();
-	
+	if ((retval=jtag_execute_queue())!=ERROR_OK)
+	{
+		for (i = 0; i < num_regs; i++)
+		{
+			free(reg_list[i].value);
+		}
+		free(reg_list);
+		free(arch_info);
+		return NULL;
+	}
+
 	eice_version = buf_get_u32(reg_list[EICE_COMMS_CTRL].value, 28, 4);
-	
+
 	switch (eice_version)
 	{
 		case 1:
@@ -149,7 +150,7 @@ reg_cache_t* embeddedice_build_reg_cache(target_t *target, arm7_9_common_t *arm7
 			arm7_9->has_single_step = 1;
 			break;
 		case 3:
-			ERROR("EmbeddedICE version 3 detected, EmbeddedICE handling might be broken"); 
+			LOG_ERROR("EmbeddedICE version 3 detected, EmbeddedICE handling might be broken");
 			reg_list[EICE_DBG_CTRL].size = 6;
 			reg_list[EICE_DBG_STAT].size = 5;
 			arm7_9->has_single_step = 1;
@@ -172,186 +173,333 @@ reg_cache_t* embeddedice_build_reg_cache(target_t *target, arm7_9_common_t *arm7
 			arm7_9->has_monitor_mode = 1;
 			break;
 		case 7:
-			WARNING("EmbeddedICE version 7 detected, EmbeddedICE handling might be broken");
+			LOG_WARNING("EmbeddedICE version 7 detected, EmbeddedICE handling might be broken");
 			reg_list[EICE_DBG_CTRL].size = 6;
 			reg_list[EICE_DBG_STAT].size = 5;
 			arm7_9->has_monitor_mode = 1;
 			break;
 		default:
-			ERROR("unknown EmbeddedICE version (comms ctrl: 0x%8.8x)", buf_get_u32(reg_list[EICE_COMMS_CTRL].value, 0, 32));
+			/*
+			 * The Feroceon implementation has the version number
+			 * in some unusual bits.  Let feroceon.c validate it
+			 * and do the appropriate setup itself.
+			 */
+			if (strcmp(target_get_name(target), "feroceon") == 0)
+				break;
+			LOG_ERROR("unknown EmbeddedICE version (comms ctrl: 0x%8.8x)", buf_get_u32(reg_list[EICE_COMMS_CTRL].value, 0, 32));
 	}
-	
+
 	return reg_cache;
 }
 
-int embeddedice_get_reg(reg_t *reg)
+int embeddedice_setup(target_t *target)
+{
+	int retval;
+	armv4_5_common_t *armv4_5 = target->arch_info;
+	arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+
+	/* explicitly disable monitor mode */
+	if (arm7_9->has_monitor_mode)
+	{
+		reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
+
+		embeddedice_read_reg(dbg_ctrl);
+		if ((retval=jtag_execute_queue())!=ERROR_OK)
+			return retval;
+		buf_set_u32(dbg_ctrl->value, 4, 1, 0);
+		embeddedice_set_reg_w_exec(dbg_ctrl, dbg_ctrl->value);
+	}
+	return jtag_execute_queue();
+}
+
+static int embeddedice_get_reg(reg_t *reg)
 {
-	if (embeddedice_read_reg(reg) != ERROR_OK)
+	int retval;
+	if ((retval = embeddedice_read_reg(reg)) != ERROR_OK)
 	{
-		ERROR("BUG: error scheduling EmbeddedICE register read");
-		exit(-1);
+		LOG_ERROR("BUG: error scheduling EmbeddedICE register read");
+		return retval;
 	}
-	
-	if (jtag_execute_queue() != ERROR_OK)
+
+	if ((retval = jtag_execute_queue()) != ERROR_OK)
 	{
-		ERROR("register read failed");
+		LOG_ERROR("register read failed");
+		return retval;
 	}
-	
+
 	return ERROR_OK;
 }
 
-int embeddedice_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask)
+int embeddedice_read_reg_w_check(reg_t *reg, uint8_t* check_value, uint8_t* check_mask)
 {
 	embeddedice_reg_t *ice_reg = reg->arch_info;
-	u8 reg_addr = ice_reg->addr & 0x1f;
+	uint8_t reg_addr = ice_reg->addr & 0x1f;
 	scan_field_t fields[3];
-	
-	DEBUG("%i", ice_reg->addr);
+	uint8_t field1_out[1];
+	uint8_t field2_out[1];
 
-	jtag_add_end_state(TAP_RTI);
+	jtag_set_end_state(TAP_IDLE);
 	arm_jtag_scann(ice_reg->jtag_info, 0x2);
-	arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr);
-	
-	fields[0].device = ice_reg->jtag_info->chain_pos;
+
+	arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL);
+
+	fields[0].tap = ice_reg->jtag_info->tap;
 	fields[0].num_bits = 32;
 	fields[0].out_value = reg->value;
-	fields[0].out_mask = NULL;
 	fields[0].in_value = NULL;
-	fields[0].in_check_value = NULL;
-	fields[0].in_check_mask = NULL;
-	fields[0].in_handler = NULL;
-	fields[0].in_handler_priv = NULL;
-	
-	fields[1].device = ice_reg->jtag_info->chain_pos;
+	fields[0].check_value = NULL;
+	fields[0].check_mask = NULL;
+
+	fields[1].tap = ice_reg->jtag_info->tap;
 	fields[1].num_bits = 5;
-	fields[1].out_value = malloc(1);
+	fields[1].out_value = field1_out;
 	buf_set_u32(fields[1].out_value, 0, 5, reg_addr);
-	fields[1].out_mask = NULL;
 	fields[1].in_value = NULL;
-	fields[1].in_check_value = NULL;
-	fields[1].in_check_mask = NULL;
-	fields[1].in_handler = NULL;
-	fields[1].in_handler_priv = NULL;
+	fields[1].check_value = NULL;
+	fields[1].check_mask = NULL;
 
-	fields[2].device = ice_reg->jtag_info->chain_pos;
+	fields[2].tap = ice_reg->jtag_info->tap;
 	fields[2].num_bits = 1;
-	fields[2].out_value = malloc(1);
+	fields[2].out_value = field2_out;
 	buf_set_u32(fields[2].out_value, 0, 1, 0);
-	fields[2].out_mask = NULL;
 	fields[2].in_value = NULL;
-	fields[2].in_check_value = NULL;
-	fields[2].in_check_mask = NULL;
-	fields[2].in_handler = NULL;
-	fields[2].in_handler_priv = NULL;
-	
-	jtag_add_dr_scan(3, fields, -1);
-	
+	fields[2].check_value = NULL;
+	fields[2].check_mask = NULL;
+
+	jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
 	fields[0].in_value = reg->value;
-	fields[0].in_check_value = check_value;
-	fields[0].in_check_mask = check_mask;
-	
+	fields[0].check_value = check_value;
+	fields[0].check_mask = check_mask;
+
 	/* when reading the DCC data register, leaving the address field set to
 	 * EICE_COMMS_DATA would read the register twice
 	 * reading the control register is safe
 	 */
 	buf_set_u32(fields[1].out_value, 0, 5, embeddedice_reg_arch_info[EICE_COMMS_CTRL]);
-	
-	jtag_add_dr_scan(3, fields, -1);
 
-	free(fields[1].out_value);
-	free(fields[2].out_value);
-	
+	jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
+
 	return ERROR_OK;
 }
 
+/* receive <size> words of 32 bit from the DCC
+ * we pretend the target is always going to be fast enough
+ * (relative to the JTAG clock), so we don't need to handshake
+ */
+int embeddedice_receive(arm_jtag_t *jtag_info, uint32_t *data, uint32_t size)
+{
+	scan_field_t fields[3];
+	uint8_t field1_out[1];
+	uint8_t field2_out[1];
+
+	jtag_set_end_state(TAP_IDLE);
+	arm_jtag_scann(jtag_info, 0x2);
+	arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+	fields[0].tap = jtag_info->tap;
+	fields[0].num_bits = 32;
+	fields[0].out_value = NULL;
+	fields[0].in_value = NULL;
+
+	fields[1].tap = jtag_info->tap;
+	fields[1].num_bits = 5;
+	fields[1].out_value = field1_out;
+	buf_set_u32(fields[1].out_value, 0, 5, embeddedice_reg_arch_info[EICE_COMMS_DATA]);
+	fields[1].in_value = NULL;
+
+	fields[2].tap = jtag_info->tap;
+	fields[2].num_bits = 1;
+	fields[2].out_value = field2_out;
+	buf_set_u32(fields[2].out_value, 0, 1, 0);
+	fields[2].in_value = NULL;
+
+	jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+	while (size > 0)
+	{
+		/* when reading the last item, set the register address to the DCC control reg,
+		 * to avoid reading additional data from the DCC data reg
+		 */
+		if (size == 1)
+			buf_set_u32(fields[1].out_value, 0, 5, embeddedice_reg_arch_info[EICE_COMMS_CTRL]);
+
+		fields[0].in_value = (uint8_t *)data;
+		jtag_add_dr_scan(3, fields, jtag_get_end_state());
+		jtag_add_callback(arm_le_to_h_u32, (jtag_callback_data_t)data);
+
+		data++;
+		size--;
+	}
+
+	return jtag_execute_queue();
+}
+
 int embeddedice_read_reg(reg_t *reg)
 {
-	return embeddedice_read_reg_w_check(reg, NULL, NULL);	
+	return embeddedice_read_reg_w_check(reg, NULL, NULL);
 }
 
-int embeddedice_set_reg(reg_t *reg, u32 value)
+void embeddedice_set_reg(reg_t *reg, uint32_t value)
 {
-	if (embeddedice_write_reg(reg, value) != ERROR_OK)
-	{
-		ERROR("BUG: error scheduling EmbeddedICE register write");
-		exit(-1);
-	}
-	
+	embeddedice_write_reg(reg, value);
+
 	buf_set_u32(reg->value, 0, reg->size, value);
 	reg->valid = 1;
 	reg->dirty = 0;
-	
-	return ERROR_OK;
+
 }
 
-int embeddedice_set_reg_w_exec(reg_t *reg, u8 *buf)
+int embeddedice_set_reg_w_exec(reg_t *reg, uint8_t *buf)
 {
+	int retval;
 	embeddedice_set_reg(reg, buf_get_u32(buf, 0, reg->size));
-	
-	if (jtag_execute_queue() != ERROR_OK)
+
+	if ((retval = jtag_execute_queue()) != ERROR_OK)
 	{
-		ERROR("register write failed");
-		exit(-1);
+		LOG_ERROR("register write failed");
+		return retval;
 	}
 	return ERROR_OK;
 }
 
-int embeddedice_write_reg(reg_t *reg, u32 value)
+void embeddedice_write_reg(reg_t *reg, uint32_t value)
 {
 	embeddedice_reg_t *ice_reg = reg->arch_info;
-	u8 reg_addr = ice_reg->addr & 0x1f;
-	scan_field_t fields[3];
-	
-	DEBUG("%i: 0x%8.8x", ice_reg->addr, value);
-	
-	jtag_add_end_state(TAP_RTI);
+
+	LOG_DEBUG("%i: 0x%8.8x", ice_reg->addr, value);
+
+	jtag_set_end_state(TAP_IDLE);
 	arm_jtag_scann(ice_reg->jtag_info, 0x2);
-	arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr);
-	
-	fields[0].device = ice_reg->jtag_info->chain_pos;
+
+	arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL);
+
+	uint8_t reg_addr = ice_reg->addr & 0x1f;
+	embeddedice_write_reg_inner(ice_reg->jtag_info->tap, reg_addr, value);
+
+}
+
+void embeddedice_store_reg(reg_t *reg)
+{
+	embeddedice_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
+}
+
+/* send <size> words of 32 bit to the DCC
+ * we pretend the target is always going to be fast enough
+ * (relative to the JTAG clock), so we don't need to handshake
+ */
+int embeddedice_send(arm_jtag_t *jtag_info, uint32_t *data, uint32_t size)
+{
+	scan_field_t fields[3];
+	uint8_t field0_out[4];
+	uint8_t field1_out[1];
+	uint8_t field2_out[1];
+
+	jtag_set_end_state(TAP_IDLE);
+	arm_jtag_scann(jtag_info, 0x2);
+	arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+	fields[0].tap = jtag_info->tap;
 	fields[0].num_bits = 32;
-	fields[0].out_value = malloc(4);
-	buf_set_u32(fields[0].out_value, 0, 32, value);
-	fields[0].out_mask = NULL;
+	fields[0].out_value = field0_out;
 	fields[0].in_value = NULL;
-	fields[0].in_check_value = NULL;
-	fields[0].in_check_mask = NULL;
-	fields[0].in_handler = NULL;
-	fields[0].in_handler_priv = NULL;
-	
-	fields[1].device = ice_reg->jtag_info->chain_pos;
+
+	fields[1].tap = jtag_info->tap;
 	fields[1].num_bits = 5;
-	fields[1].out_value = malloc(1);
-	buf_set_u32(fields[1].out_value, 0, 5, reg_addr);
-	fields[1].out_mask = NULL;
+	fields[1].out_value = field1_out;
+	buf_set_u32(fields[1].out_value, 0, 5, embeddedice_reg_arch_info[EICE_COMMS_DATA]);
 	fields[1].in_value = NULL;
-	fields[1].in_check_value = NULL;
-	fields[1].in_check_mask = NULL;
-	fields[1].in_handler = NULL;
-	fields[1].in_handler_priv = NULL;
 
-	fields[2].device = ice_reg->jtag_info->chain_pos;
+	fields[2].tap = jtag_info->tap;
 	fields[2].num_bits = 1;
-	fields[2].out_value = malloc(1);
+	fields[2].out_value = field2_out;
 	buf_set_u32(fields[2].out_value, 0, 1, 1);
-	fields[2].out_mask = NULL;
+
 	fields[2].in_value = NULL;
-	fields[2].in_check_value = NULL;
-	fields[2].in_check_mask = NULL;
-	fields[2].in_handler = NULL;
-	fields[2].in_handler_priv = NULL;
-	
-	jtag_add_dr_scan(3, fields, -1);
-	
-	free(fields[0].out_value);
-	free(fields[1].out_value);
-	free(fields[2].out_value);
-	
+
+	while (size > 0)
+	{
+		buf_set_u32(fields[0].out_value, 0, 32, *data);
+		jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+		data++;
+		size--;
+	}
+
+	/* call to jtag_execute_queue() intentionally omitted */
 	return ERROR_OK;
 }
 
-int embeddedice_store_reg(reg_t *reg)
+/* wait for DCC control register R/W handshake bit to become active
+ */
+int embeddedice_handshake(arm_jtag_t *jtag_info, int hsbit, uint32_t timeout)
 {
-	return embeddedice_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
+	scan_field_t fields[3];
+	uint8_t field0_in[4];
+	uint8_t field1_out[1];
+	uint8_t field2_out[1];
+	int retval;
+	uint32_t hsact;
+	struct timeval lap;
+	struct timeval now;
+
+	if (hsbit == EICE_COMM_CTRL_WBIT)
+		hsact = 1;
+	else if (hsbit == EICE_COMM_CTRL_RBIT)
+		hsact = 0;
+	else
+		return ERROR_INVALID_ARGUMENTS;
+
+	jtag_set_end_state(TAP_IDLE);
+	arm_jtag_scann(jtag_info, 0x2);
+	arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+
+	fields[0].tap = jtag_info->tap;
+	fields[0].num_bits = 32;
+	fields[0].out_value = NULL;
+	fields[0].in_value = field0_in;
+
+	fields[1].tap = jtag_info->tap;
+	fields[1].num_bits = 5;
+	fields[1].out_value = field1_out;
+	buf_set_u32(fields[1].out_value, 0, 5, embeddedice_reg_arch_info[EICE_COMMS_CTRL]);
+	fields[1].in_value = NULL;
+
+	fields[2].tap = jtag_info->tap;
+	fields[2].num_bits = 1;
+	fields[2].out_value = field2_out;
+	buf_set_u32(fields[2].out_value, 0, 1, 0);
+	fields[2].in_value = NULL;
+
+	jtag_add_dr_scan(3, fields, jtag_get_end_state());
+	gettimeofday(&lap, NULL);
+	do
+	{
+		jtag_add_dr_scan(3, fields, jtag_get_end_state());
+		if ((retval = jtag_execute_queue()) != ERROR_OK)
+			return retval;
+
+		if (buf_get_u32(field0_in, hsbit, 1) == hsact)
+			return ERROR_OK;
+
+		gettimeofday(&now, NULL);
+	}
+	while ((uint32_t)((now.tv_sec-lap.tv_sec)*1000 + (now.tv_usec-lap.tv_usec)/1000) <= timeout);
+
+	return ERROR_TARGET_TIMEOUT;
 }
 
+#ifndef HAVE_JTAG_MINIDRIVER_H
+/* this is the inner loop of the open loop DCC write of data to target */
+void embeddedice_write_dcc(jtag_tap_t *tap, int reg_addr, uint8_t *buffer, int little, int count)
+{
+	int i;
+	for (i = 0; i < count; i++)
+	{
+		embeddedice_write_reg_inner(tap, reg_addr, fast_target_buffer_get_u32(buffer, little));
+		buffer += 4;
+	}
+}
+#else
+/* provided by minidriver */
+#endif