* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007,2008,2009 Øyvind Harboe *
+ * Copyright (C) 2007-2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 by Spencer Oliver *
*
* This provides lowlevel glue to the EmbeddedICE (or EmbeddedICE-RT)
* module found on scan chain 2 in ARM7, ARM9, and some other families
- * of ARM cores.
+ * of ARM cores. The module is called "EmbeddedICE-RT" if it has
+ * monitor mode support.
*
* EmbeddedICE provides basic watchpoint/breakpoint hardware and a Debug
* Communications Channel (DCC) used to read or write 32-bit words to
* core entered debug mode.
*/
+static int embeddedice_set_reg_w_exec(struct reg *reg, uint8_t *buf);
+
/*
* From: ARM9E-S TRM, DDI 0165, table C-4 (and similar, for other cores)
*/
};
-static int embeddedice_reg_arch_type = -1;
-
static int embeddedice_get_reg(struct reg *reg)
{
int retval;
return retval;
}
+static const struct reg_arch_type eice_reg_type = {
+ .get = embeddedice_get_reg,
+ .set = embeddedice_set_reg_w_exec,
+};
+
/**
* Probe EmbeddedICE module and set up local records of its registers.
* Different versions of the modules have different capabilities, such as
int i;
int eice_version = 0;
- /* 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);
-
/* vector_catch isn't always present */
if (!arm7_9->has_vector_catch)
num_regs--;
reg_cache->reg_list = reg_list;
reg_cache->num_regs = num_regs;
+ /* FIXME the second watchpoint unit on Feroceon and Dragonite
+ * seems not to work ... we should have a way to not set up
+ * its four registers here!
+ */
+
/* set up registers */
for (i = 0; i < num_regs; i++)
{
reg_list[i].valid = 0;
reg_list[i].value = calloc(1, 4);
reg_list[i].arch_info = &arch_info[i];
- reg_list[i].arch_type = embeddedice_reg_arch_type;
+ reg_list[i].type = &eice_reg_type;
arch_info[i].addr = eice_regs[i].addr;
arch_info[i].jtag_info = jtag_info;
}
* in some unusual bits. Let feroceon.c validate it
* and do the appropriate setup itself.
*/
- if (strcmp(target_get_name(target), "feroceon") == 0 ||
- strcmp(target_get_name(target), "dragonite") == 0)
+ if (strcmp(target_type_name(target), "feroceon") == 0 ||
+ strcmp(target_type_name(target), "dragonite") == 0)
break;
LOG_ERROR("unknown EmbeddedICE version "
"(comms ctrl: 0x%8.8" PRIx32 ")",
buf_get_u32(reg_list[EICE_COMMS_CTRL].value, 0, 32));
}
+ /* On Feroceon and Dragonite the second unit is seemingly missing. */
+ LOG_INFO("%s: hardware has %d breakpoint/watchpoint unit%s",
+ target_name(target), arm7_9->wp_available_max,
+ (arm7_9->wp_available_max != 1) ? "s" : "");
+
return reg_cache;
}
struct scan_field fields[3];
uint8_t field1_out[1];
uint8_t field2_out[1];
+ int retval;
- jtag_set_end_state(TAP_IDLE);
- arm_jtag_scann(ice_reg->jtag_info, 0x2);
+ retval = arm_jtag_scann(ice_reg->jtag_info, 0x2, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
- arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL);
+ retval = arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
/* bits 31:0 -- data (ignored here) */
- fields[0].tap = ice_reg->jtag_info->tap;
fields[0].num_bits = 32;
fields[0].out_value = reg->value;
fields[0].in_value = NULL;
fields[0].check_mask = NULL;
/* bits 36:32 -- register */
- fields[1].tap = ice_reg->jtag_info->tap;
fields[1].num_bits = 5;
fields[1].out_value = field1_out;
- buf_set_u32(fields[1].out_value, 0, 5, reg_addr);
+ field1_out[0] = reg_addr;
fields[1].in_value = NULL;
fields[1].check_value = NULL;
fields[1].check_mask = NULL;
/* bit 37 -- 0/read */
- fields[2].tap = ice_reg->jtag_info->tap;
fields[2].num_bits = 1;
fields[2].out_value = field2_out;
- buf_set_u32(fields[2].out_value, 0, 1, 0);
+ field2_out[0] = 0;
fields[2].in_value = NULL;
fields[2].check_value = NULL;
fields[2].check_mask = NULL;
/* traverse Update-DR, setting address for the next read */
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan(ice_reg->jtag_info->tap, 3, fields, TAP_IDLE);
/* bits 31:0 -- the data we're reading (and maybe checking) */
fields[0].in_value = reg->value;
* EICE_COMMS_DATA would read the register twice
* reading the control register is safe
*/
- buf_set_u32(fields[1].out_value, 0, 5, eice_regs[EICE_COMMS_CTRL].addr);
+ field1_out[0] = eice_regs[EICE_COMMS_CTRL].addr;
/* traverse Update-DR, reading but with no other side effects */
- jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan_check(ice_reg->jtag_info->tap, 3, fields, TAP_IDLE);
return ERROR_OK;
}
struct scan_field fields[3];
uint8_t field1_out[1];
uint8_t field2_out[1];
+ int retval;
- jtag_set_end_state(TAP_IDLE);
- arm_jtag_scann(jtag_info, 0x2);
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+ retval = arm_jtag_scann(jtag_info, 0x2, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
- 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, eice_regs[EICE_COMMS_DATA].addr);
+ field1_out[0] = eice_regs[EICE_COMMS_DATA].addr;
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);
+ field2_out[0] = 0;
fields[2].in_value = NULL;
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_IDLE);
while (size > 0)
{
* to avoid reading additional data from the DCC data reg
*/
if (size == 1)
- buf_set_u32(fields[1].out_value, 0, 5,
- eice_regs[EICE_COMMS_CTRL].addr);
+ field1_out[0] = eice_regs[EICE_COMMS_CTRL].addr;
fields[0].in_value = (uint8_t *)data;
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_IDLE);
jtag_add_callback(arm_le_to_h_u32, (jtag_callback_data_t)data);
data++;
* Write an EmbeddedICE register, updating the register cache.
* Uses embeddedice_set_reg(); not queued.
*/
-int embeddedice_set_reg_w_exec(struct reg *reg, uint8_t *buf)
+static int embeddedice_set_reg_w_exec(struct reg *reg, uint8_t *buf)
{
int retval;
LOG_DEBUG("%i: 0x%8.8" PRIx32 "", ice_reg->addr, value);
- jtag_set_end_state(TAP_IDLE);
- arm_jtag_scann(ice_reg->jtag_info, 0x2);
+ arm_jtag_scann(ice_reg->jtag_info, 0x2, TAP_IDLE);
- arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL);
+ arm_jtag_set_instr(ice_reg->jtag_info, ice_reg->jtag_info->intest_instr, NULL, TAP_IDLE);
uint8_t reg_addr = ice_reg->addr & 0x1f;
embeddedice_write_reg_inner(ice_reg->jtag_info->tap, reg_addr, value);
uint8_t field0_out[4];
uint8_t field1_out[1];
uint8_t field2_out[1];
+ int retval;
- jtag_set_end_state(TAP_IDLE);
- arm_jtag_scann(jtag_info, 0x2);
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+ retval = arm_jtag_scann(jtag_info, 0x2, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
- fields[0].tap = jtag_info->tap;
fields[0].num_bits = 32;
fields[0].out_value = field0_out;
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, eice_regs[EICE_COMMS_DATA].addr);
+ field1_out[0] = eice_regs[EICE_COMMS_DATA].addr;
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, 1);
+ field2_out[0] = 1;
fields[2].in_value = NULL;
while (size > 0)
{
- buf_set_u32(fields[0].out_value, 0, 32, *data);
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ buf_set_u32(field0_out, 0, 32, *data);
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_IDLE);
data++;
size--;
else if (hsbit == EICE_COMM_CTRL_RBIT)
hsact = 0;
else
- return ERROR_INVALID_ARGUMENTS;
+ {
+ LOG_ERROR("Invalid arguments");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
- jtag_set_end_state(TAP_IDLE);
- arm_jtag_scann(jtag_info, 0x2);
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
+ retval = arm_jtag_scann(jtag_info, 0x2, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
+ retval = arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL, TAP_IDLE);
+ if (retval != ERROR_OK)
+ return retval;
- 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, eice_regs[EICE_COMMS_DATA].addr);
+ field1_out[0] = eice_regs[EICE_COMMS_DATA].addr;
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);
+ field2_out[0] = 0;
fields[2].in_value = NULL;
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_IDLE);
gettimeofday(&lap, NULL);
do {
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ jtag_add_dr_scan(jtag_info->tap, 3, fields, TAP_IDLE);
if ((retval = jtag_execute_queue()) != ERROR_OK)
return retval;
} while ((uint32_t)((now.tv_sec - lap.tv_sec) * 1000
+ (now.tv_usec - lap.tv_usec) / 1000) <= timeout);
+ LOG_ERROR("embeddedice handshake timeout");
return ERROR_TARGET_TIMEOUT;
}
* This is an inner loop of the open loop DCC write of data to target
*/
void embeddedice_write_dcc(struct jtag_tap *tap,
- int reg_addr, uint8_t *buffer, int little, int count)
+ int reg_addr, const uint8_t *buffer, int little, int count)
{
int i;
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