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/***************************************************************************
* Copyright (C) 2006 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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 *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "virtex2.h"
#include "xilinx_bit.h"
#include "pld.h"
static int virtex2_set_instr(struct jtag_tap *tap, uint32_t new_instr)
{
if (tap == NULL)
return ERROR_FAIL;
if (buf_get_u32(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);
field.out_value = t;
buf_set_u32(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);
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));
virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
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;
virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
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 */
virtex2_send_32(pld_device, 5, data);
virtex2_receive_32(pld_device, 1, status);
jtag_execute_queue();
LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
return ERROR_OK;
}
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;
virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
jtag_execute_queue();
jtag_add_sleep(1000);
virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
jtag_execute_queue();
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);
jtag_execute_queue();
jtag_add_tlr();
virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_IDLE);
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_IDLE);
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
jtag_execute_queue();
return ERROR_OK;
}
COMMAND_HANDLER(virtex2_handle_read_stat_command)
{
struct pld_device *device;
uint32_t status;
if (CMD_ARGC < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
unsigned dev_id;
COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
device = get_pld_device_by_num(dev_id);
if (!device) {
command_print(CMD_CTX, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
return ERROR_OK;
}
virtex2_read_stat(device, &status);
command_print(CMD_CTX, "virtex2 status register: 0x%8.8" PRIx32 "", status);
return ERROR_OK;
}
PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
{
struct jtag_tap *tap;
struct virtex2_pld_device *virtex2_info;
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
tap = jtag_tap_by_string(CMD_ARGV[1]);
if (tap == NULL) {
command_print(CMD_CTX, "Tap: %s does not exist", CMD_ARGV[1]);
return ERROR_OK;
}
virtex2_info = malloc(sizeof(struct virtex2_pld_device));
virtex2_info->tap = tap;
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_num",
},
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_device_command = &virtex2_pld_device_command,
.load = &virtex2_load,
};
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