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mw_debug: Add Lattice ECP5 support

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"-b ecp5" will select ECP5 interface that talks to a JTAGG
primitive.

For example with a FT232H JTAG board:

./mw_debug  -t 'ft2232 vid=0x0403 pid=0x6014'  -s 30000000 -b ecp5 mr ff003888 6
Connected to libftdi driver.
Found device ID: 0x41113043
00000000ff003888: 6d6f636c65570a0a  ..Welcom
00000000ff003890: 63694d206f742065  e to Mic
00000000ff003898: 2120747461776f72  rowatt !
00000000ff0038a0: 0000000000000a0a  ........
00000000ff0038a8: 67697320636f5320   Soc sig
00000000ff0038b0: 203a65727574616e  nature:
Core: running
 NIA: c0000000000187f8
 MSR: 9000000000001033

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
This commit is contained in:
Matt Johnston
2022-02-04 15:29:40 +08:00
parent 3775650df3
commit 9c64f8a98b
1 changed files with 96 additions and 14 deletions
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110
scripts/mw_debug/mw_debug.c
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@@ -212,16 +212,13 @@ static struct backend sim_backend = {
static urj_chain_t *jc;
static int jtag_init(const char *target, int freq)
static int common_jtag_init(const char *target, int freq)
{
const char *sep;
const char *cable;
const int max_params = 20;
char *params[max_params+1];
urj_part_t *p;
uint32_t id;
int rc, part;
int rc;
if (!target)
target = "probe";
@@ -272,19 +269,33 @@ static int jtag_init(const char *target, int freq)
urj_tap_cable_set_frequency(jc->cable, freq);
}
return 0;
}
static int bscane2_init(const char *target, int freq)
{
urj_part_t *p;
uint32_t id;
int rc;
rc = common_jtag_init(target, freq);
if (rc < 0) {
return rc;
}
/* XXX Hard wire part 0, that might need to change (use params and detect !) */
rc = urj_tap_manual_add(jc, 6);
if (rc < 0) {
fprintf(stderr, "JTAG failed to add part! : %s\n", urj_error_describe());
fprintf(stderr, "JTAG failed to add part !\n");
return -1;
}
if (jc->parts == NULL || jc->parts->len == 0) {
fprintf(stderr, "JTAG Something's wrong after adding part! : %s\n", urj_error_describe());
fprintf(stderr, "JTAG Something's wrong after adding part !\n");
return -1;
}
urj_part_parts_set_instruction(jc->parts, "BYPASS");
jc->active_part = part = 0;
jc->active_part = 0;
p = urj_tap_chain_active_part(jc);
if (!p) {
@@ -320,6 +331,69 @@ static int jtag_init(const char *target, int freq)
return 0;
}
static int ecp5_init(const char *target, int freq)
{
urj_part_t *p;
uint32_t id;
int rc;
rc = common_jtag_init(target, freq);
if (rc < 0) {
return rc;
}
/* XXX Hard wire part 0, that might need to change (use params and detect !) */
rc = urj_tap_manual_add(jc, 8);
if (rc < 0) {
fprintf(stderr, "JTAG failed to add part! : %s\n", urj_error_describe());
return -1;
}
if (jc->parts == NULL || jc->parts->len == 0) {
fprintf(stderr, "JTAG Something's wrong after adding part! : %s\n", urj_error_describe());
return -1;
}
urj_part_parts_set_instruction(jc->parts, "BYPASS");
jc->active_part = 0;
p = urj_tap_chain_active_part(jc);
if (!p) {
fprintf(stderr, "Failed to get active JTAG part\n");
return -1;
}
rc = urj_part_data_register_define(p, "IDCODE_REG", 32);
if (rc != URJ_STATUS_OK) {
fprintf(stderr, "JTAG failed to add IDCODE_REG register! : %s\n",
urj_error_describe());
return -1;
}
// READ_ID = 0xE0 = 11100000, from Lattice TN1260 sysconfig guide
if (urj_part_instruction_define(p, "IDCODE", "11100000", "IDCODE_REG") == NULL) {
fprintf(stderr, "JTAG failed to add IDCODE instruction! : %s\n",
urj_error_describe());
return -1;
}
rc = urj_part_data_register_define(p, "USER2_REG", 74);
if (rc != URJ_STATUS_OK) {
fprintf(stderr, "JTAG failed to add USER2_REG register !\n");
return -1;
}
// ER1 = 0x32 = 00110010b
if (urj_part_instruction_define(p, "USER2", "00110010", "USER2_REG") == NULL) {
fprintf(stderr, "JTAG failed to add USER2 instruction !\n");
return -1;
}
urj_part_set_instruction(p, "IDCODE");
urj_tap_chain_shift_instructions(jc);
urj_tap_chain_shift_data_registers(jc, 1);
id = urj_tap_register_get_value(p->active_instruction->data_register->out);
printf("Found device ID: 0x%08x\n", id);
urj_part_set_instruction(p, "USER2");
urj_tap_chain_shift_instructions(jc);
return 0;
}
static int jtag_reset(void)
{
return 0;
@@ -359,8 +433,14 @@ static int jtag_command(uint8_t op, uint8_t addr, uint64_t *data)
return rc;
}
static struct backend jtag_backend = {
.init = jtag_init,
static struct backend bscane2_backend = {
.init = bscane2_init,
.reset = jtag_reset,
.command = jtag_command,
};
static struct backend ecp5_backend = {
.init = ecp5_init,
.reset = jtag_reset,
.command = jtag_command,
};
@@ -682,7 +762,7 @@ static void ltrig_set(uint64_t addr)
static void usage(const char *cmd)
{
fprintf(stderr, "Usage: %s -b <jtag|sim> <command> <args>\n", cmd);
fprintf(stderr, "Usage: %s -b <jtag|ecp5|sim> <command> <args>\n", cmd);
fprintf(stderr, "\n");
fprintf(stderr, " CPU core:\n");
@@ -750,8 +830,10 @@ int main(int argc, char *argv[])
case 'b':
if (strcmp(optarg, "sim") == 0)
b = &sim_backend;
else if (strcmp(optarg, "jtag") == 0)
b = &jtag_backend;
else if (strcmp(optarg, "jtag") == 0 || strcmp(optarg, "bscane2") == 0)
b = &bscane2_backend;
else if (strcmp(optarg, "ecp5") == 0)
b = &ecp5_backend;
else {
fprintf(stderr, "Unknown backend %s\n", optarg);
exit(1);
@@ -773,7 +855,7 @@ int main(int argc, char *argv[])
}
if (b == NULL)
b = &jtag_backend;
b = &bscane2_backend;
rc = b->init(target, freq);
if (rc < 0)