* 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 *
#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,
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;
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++)
{
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(®_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:
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;
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
Code Review / openocd.git / blobdiff