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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2006 by Dominic Rath *
* Dominic.Rath@gmx.de *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "virtex2.h"
#include "xilinx_bit.h"
#include "pld.h"
static const struct virtex2_command_set virtex2_default_commands = {
.cfg_out = 0x04,
.cfg_in = 0x05,
.jprog_b = 0x0b,
.jstart = 0x0c,
.jshutdown = 0x0d,
.bypass = 0x3f,
.user = {0x02, 0x03},
.num_user = 2, /* virtex II has only 2 user instructions */
};
static int virtex2_set_instr(struct jtag_tap *tap, uint64_t new_instr)
{
if (!tap)
return ERROR_FAIL;
if (buf_get_u64(tap->cur_instr, 0, tap->ir_length) != new_instr) {
struct scan_field field;
field.num_bits = tap->ir_length;
void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
if (!t) {
LOG_ERROR("Out of memory");
return ERROR_FAIL;
}
field.out_value = t;
buf_set_u64(t, 0, field.num_bits, new_instr);
field.in_value = NULL;
jtag_add_ir_scan(tap, &field, TAP_IDLE);
free(t);
}
return ERROR_OK;
}
static int virtex2_send_32(struct pld_device *pld_device,
int num_words, uint32_t *words)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct scan_field scan_field;
uint8_t *values;
int i;
values = malloc(num_words * 4);
if (!values) {
LOG_ERROR("Out of memory");
return ERROR_FAIL;
}
scan_field.num_bits = num_words * 32;
scan_field.out_value = values;
scan_field.in_value = NULL;
for (i = 0; i < num_words; i++)
buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
int retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_in);
if (retval != ERROR_OK) {
free(values);
return retval;
}
jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
free(values);
return ERROR_OK;
}
static inline void virtexflip32(jtag_callback_data_t arg)
{
uint8_t *in = (uint8_t *)arg;
*((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
}
static int virtex2_receive_32(struct pld_device *pld_device,
int num_words, uint32_t *words)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct scan_field scan_field;
scan_field.num_bits = 32;
scan_field.out_value = NULL;
scan_field.in_value = NULL;
int retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_out);
if (retval != ERROR_OK)
return retval;
while (num_words--) {
scan_field.in_value = (uint8_t *)words;
jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
words++;
}
return ERROR_OK;
}
static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
{
uint32_t data[5];
jtag_add_tlr();
data[0] = 0xaa995566; /* synch word */
data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
data[3] = 0x20000000; /* NOOP */
data[4] = 0x20000000; /* NOOP */
int retval = virtex2_send_32(pld_device, 5, data);
if (retval != ERROR_OK)
return retval;
retval = virtex2_receive_32(pld_device, 1, status);
if (retval != ERROR_OK)
return retval;
retval = jtag_execute_queue();
if (retval == ERROR_OK)
LOG_DEBUG("status: 0x%8.8" PRIx32, *status);
return retval;
}
static int virtex2_program(struct pld_device *pld_device)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
if (!virtex2_info)
return ERROR_FAIL;
int retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jshutdown);
if (retval != ERROR_OK)
return retval;
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jprog_b);
if (retval != ERROR_OK)
return retval;
jtag_add_runtest(62000, TAP_IDLE);
if (!(virtex2_info->no_jstart)) {
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jstart);
if (retval != ERROR_OK)
return retval;
}
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
if (retval != ERROR_OK)
return retval;
jtag_add_runtest(2000, TAP_IDLE);
return jtag_execute_queue();
}
static int virtex2_load_prepare(struct pld_device *pld_device)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
int retval;
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jprog_b);
if (retval != ERROR_OK)
return retval;
retval = jtag_execute_queue();
if (retval != ERROR_OK)
return retval;
jtag_add_sleep(1000);
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.cfg_in);
if (retval != ERROR_OK)
return retval;
return jtag_execute_queue();
}
static int virtex2_load_cleanup(struct pld_device *pld_device)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
int retval;
jtag_add_tlr();
if (!(virtex2_info->no_jstart)) {
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jstart);
if (retval != ERROR_OK)
return retval;
}
jtag_add_runtest(13, TAP_IDLE);
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
if (retval != ERROR_OK)
return retval;
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
if (retval != ERROR_OK)
return retval;
if (!(virtex2_info->no_jstart)) {
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.jstart);
if (retval != ERROR_OK)
return retval;
}
jtag_add_runtest(13, TAP_IDLE);
retval = virtex2_set_instr(virtex2_info->tap, virtex2_info->command_set.bypass);
if (retval != ERROR_OK)
return retval;
return jtag_execute_queue();
}
static int virtex2_load(struct pld_device *pld_device, const char *filename)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct xilinx_bit_file bit_file;
int retval;
unsigned int i;
struct scan_field field;
field.in_value = NULL;
retval = xilinx_read_bit_file(&bit_file, filename);
if (retval != ERROR_OK)
return retval;
retval = virtex2_load_prepare(pld_device);
if (retval != ERROR_OK) {
xilinx_free_bit_file(&bit_file);
return retval;
}
for (i = 0; i < bit_file.length; i++)
bit_file.data[i] = flip_u32(bit_file.data[i], 8);
field.num_bits = bit_file.length * 8;
field.out_value = bit_file.data;
jtag_add_dr_scan(virtex2_info->tap, 1, &field, TAP_DRPAUSE);
retval = jtag_execute_queue();
if (retval != ERROR_OK) {
xilinx_free_bit_file(&bit_file);
return retval;
}
retval = virtex2_load_cleanup(pld_device);
xilinx_free_bit_file(&bit_file);
return retval;
}
COMMAND_HANDLER(virtex2_handle_refresh_command)
{
struct pld_device *device;
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
device = get_pld_device_by_name_or_numstr(CMD_ARGV[0]);
if (!device) {
command_print(CMD, "pld device '#%s' is out of bounds or unknown", CMD_ARGV[0]);
return ERROR_FAIL;
}
return virtex2_program(device);
}
COMMAND_HANDLER(virtex2_handle_read_stat_command)
{
struct pld_device *device;
uint32_t status;
if (CMD_ARGC < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
device = get_pld_device_by_name_or_numstr(CMD_ARGV[0]);
if (!device) {
command_print(CMD, "pld device '#%s' is out of bounds or unknown", CMD_ARGV[0]);
return ERROR_FAIL;
}
int retval = virtex2_read_stat(device, &status);
if (retval != ERROR_OK) {
command_print(CMD, "cannot read virtex2 status register");
return retval;
}
command_print(CMD, "virtex2 status register: 0x%8.8" PRIx32, status);
return ERROR_OK;
}
static int xilinx_get_ipdbg_hub(int user_num, struct pld_device *pld_device, struct pld_ipdbg_hub *hub)
{
if (!pld_device)
return ERROR_FAIL;
struct virtex2_pld_device *pld_device_info = pld_device->driver_priv;
if (!pld_device_info || !pld_device_info->tap)
return ERROR_FAIL;
hub->tap = pld_device_info->tap;
if (user_num < 1 || (unsigned int)user_num > pld_device_info->command_set.num_user) {
LOG_ERROR("device has only user register 1 to %d", pld_device_info->command_set.num_user);
return ERROR_FAIL;
}
hub->user_ir_code = pld_device_info->command_set.user[user_num - 1];
return ERROR_OK;
}
static int xilinx_get_jtagspi_userircode(struct pld_device *pld_device, unsigned int *ir)
{
if (!pld_device || !pld_device->driver_priv)
return ERROR_FAIL;
struct virtex2_pld_device *pld_device_info = pld_device->driver_priv;
if (pld_device_info->command_set.num_user < 1) {
LOG_ERROR("code for command 'select user1' is unknown");
return ERROR_FAIL;
}
*ir = pld_device_info->command_set.user[0];
return ERROR_OK;
}
COMMAND_HANDLER(virtex2_handle_set_instuction_codes_command)
{
if (CMD_ARGC < 6 || CMD_ARGC > (6 + VIRTEX2_MAX_USER_INSTRUCTIONS))
return ERROR_COMMAND_SYNTAX_ERROR;
struct pld_device *device = get_pld_device_by_name(CMD_ARGV[0]);
if (!device) {
command_print(CMD, "pld device '#%s' is unknown", CMD_ARGV[0]);
return ERROR_FAIL;
}
struct virtex2_pld_device *virtex2_info = device->driver_priv;
if (!virtex2_info)
return ERROR_FAIL;
struct virtex2_command_set instr_codes;
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1], instr_codes.cfg_out);
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[2], instr_codes.cfg_in);
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[3], instr_codes.jprog_b);
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[4], instr_codes.jstart);
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[5], instr_codes.jshutdown);
instr_codes.bypass = 0xffffffffffffffffULL;
unsigned int num_user = CMD_ARGC - 6;
for (unsigned int i = 0; i < num_user; ++i)
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[6 + i], instr_codes.user[i]);
instr_codes.num_user = num_user;
virtex2_info->command_set = instr_codes;
return ERROR_OK;
}
COMMAND_HANDLER(virtex2_handle_set_user_codes_command)
{
if (CMD_ARGC < 2 || CMD_ARGC > (1 + VIRTEX2_MAX_USER_INSTRUCTIONS))
return ERROR_COMMAND_SYNTAX_ERROR;
struct pld_device *device = get_pld_device_by_name(CMD_ARGV[0]);
if (!device) {
command_print(CMD, "pld device '#%s' is unknown", CMD_ARGV[0]);
return ERROR_FAIL;
}
struct virtex2_pld_device *virtex2_info = device->driver_priv;
if (!virtex2_info)
return ERROR_FAIL;
uint64_t user[VIRTEX2_MAX_USER_INSTRUCTIONS];
unsigned int num_user = CMD_ARGC - 1;
for (unsigned int i = 0; i < num_user; ++i)
COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1 + i], user[i]);
virtex2_info->command_set.num_user = num_user;
memcpy(virtex2_info->command_set.user, user, num_user * sizeof(uint64_t));
return ERROR_OK;
}
PLD_CREATE_COMMAND_HANDLER(virtex2_pld_create_command)
{
if (CMD_ARGC < 4)
return ERROR_COMMAND_SYNTAX_ERROR;
if (strcmp(CMD_ARGV[2], "-chain-position") != 0)
return ERROR_COMMAND_SYNTAX_ERROR;
struct jtag_tap *tap = jtag_tap_by_string(CMD_ARGV[3]);
if (!tap) {
command_print(CMD, "Tap: %s does not exist", CMD_ARGV[3]);
return ERROR_FAIL;
}
struct virtex2_pld_device *virtex2_info = malloc(sizeof(struct virtex2_pld_device));
if (!virtex2_info) {
LOG_ERROR("Out of memory");
return ERROR_FAIL;
}
virtex2_info->tap = tap;
virtex2_info->command_set = virtex2_default_commands;
virtex2_info->no_jstart = 0;
if (CMD_ARGC >= 5 && strcmp(CMD_ARGV[4], "-no_jstart") == 0)
virtex2_info->no_jstart = 1;
pld->driver_priv = virtex2_info;
return ERROR_OK;
}
static const struct command_registration virtex2_exec_command_handlers[] = {
{
.name = "read_stat",
.mode = COMMAND_EXEC,
.handler = virtex2_handle_read_stat_command,
.help = "read status register",
.usage = "pld_name",
}, {
.name = "set_instr_codes",
.mode = COMMAND_ANY,
.handler = virtex2_handle_set_instuction_codes_command,
.help = "set instructions codes used for loading the bitstream/refreshing/jtag-hub",
.usage = "pld_name cfg_out cfg_in jprogb jstart jshutdown"
" [user1 [user2 [user3 [user4]]]]",
}, {
.name = "set_user_codes",
.mode = COMMAND_ANY,
.handler = virtex2_handle_set_user_codes_command,
.help = "set instructions codes used for jtag-hub",
.usage = "pld_name user1 [user2 [user3 [user4]]]",
}, {
.name = "refresh",
.mode = COMMAND_EXEC,
.handler = virtex2_handle_refresh_command,
.help = "start loading of configuration (program)",
.usage = "pld_name",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration virtex2_command_handler[] = {
{
.name = "virtex2",
.mode = COMMAND_ANY,
.help = "Virtex-II specific commands",
.usage = "",
.chain = virtex2_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
struct pld_driver virtex2_pld = {
.name = "virtex2",
.commands = virtex2_command_handler,
.pld_create_command = &virtex2_pld_create_command,
.load = &virtex2_load,
.get_ipdbg_hub = xilinx_get_ipdbg_hub,
.get_jtagspi_userircode = xilinx_get_jtagspi_userircode,
};
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