/***************************************************************************
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "virtex2.h"
#include "pld.h"
#include "xilinx_bit.h"
#include "command.h"
#include "log.h"
#include "jtag.h"
#include <stdlib.h>
int virtex2_register_commands(struct command_context_s *cmd_ctx);
int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
int virtex2_load(struct pld_device_s *pld_device, char *filename);
pld_driver_t virtex2_pld =
{
.name = "virtex2",
.register_commands = virtex2_register_commands,
.pld_device_command = virtex2_pld_device_command,
.load = virtex2_load,
};
int virtex2_set_instr(int chain_pos, u32 new_instr)
{
jtag_device_t *device = jtag_get_device(chain_pos);
if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
{
scan_field_t field;
field.device = chain_pos;
field.num_bits = device->ir_length;
field.out_value = calloc(CEIL(field.num_bits, 8), 1);
buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
field.out_mask = NULL;
field.in_value = NULL;
field.in_check_value = NULL;
field.in_check_mask = NULL;
field.in_handler = NULL;
field.in_handler_priv = NULL;
jtag_add_ir_scan(1, &field, TAP_RTI);
free(field.out_value);
}
return ERROR_OK;
}
int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words)
{
virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
scan_field_t scan_field;
u8 *values;
int i;
values = malloc(num_words * 4);
scan_field.device = virtex2_info->chain_pos;
scan_field.num_bits = num_words * 32;
scan_field.out_value = values;
scan_field.out_mask = NULL;
scan_field.in_value = NULL;
scan_field.in_check_value = NULL;
scan_field.in_check_mask = NULL;
scan_field.in_handler = NULL;
scan_field.in_handler_priv = 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->chain_pos, 0x5); /* CFG_IN */
jtag_add_dr_scan(1, &scan_field, TAP_PD);
free(values);
return ERROR_OK;
}
int virtex2_jtag_buf_to_u32(u8 *in_buf, void *priv, struct scan_field_s *field)
{
u32 *dest = priv;
*dest = flip_u32(le_to_h_u32(in_buf), 32);
return ERROR_OK;
}
int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words)
{
virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
scan_field_t scan_field;
scan_field.device = virtex2_info->chain_pos;
scan_field.num_bits = 32;
scan_field.out_value = NULL;
scan_field.out_mask = NULL;
scan_field.in_value = NULL;
scan_field.in_check_value = NULL;
scan_field.in_check_mask = NULL;
scan_field.in_handler = virtex2_jtag_buf_to_u32;
virtex2_set_instr(virtex2_info->chain_pos, 0x4); /* CFG_OUT */
while (num_words--)
{
scan_field.in_handler_priv = words++;
jtag_add_dr_scan(1, &scan_field, TAP_PD);
}
return ERROR_OK;
}
int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status)
{
u32 data[5];
jtag_add_tms();
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%8.8x", *status);
return ERROR_OK;
}
int virtex2_load(struct pld_device_s *pld_device, char *filename)
{
virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
xilinx_bit_file_t bit_file;
int retval;
int i;
scan_field_t field;
field.device = virtex2_info->chain_pos;
field.out_mask = NULL;
field.in_value = NULL;
field.in_check_value = NULL;
field.in_check_mask = NULL;
field.in_handler = NULL;
field.in_handler_priv = NULL;
if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
return retval;
jtag_add_end_state(TAP_RTI);
virtex2_set_instr(virtex2_info->chain_pos, 0xb); /* JPROG_B */
jtag_execute_queue();
jtag_add_sleep(1000);
virtex2_set_instr(virtex2_info->chain_pos, 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(1, &field, TAP_PD);
jtag_execute_queue();
jtag_add_tms();
jtag_add_end_state(TAP_RTI);
virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_RTI);
virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_RTI);
virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */
jtag_execute_queue();
return ERROR_OK;
}
int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
pld_device_t *device;
virtex2_pld_device_t *virtex2_info;
u32 status;
if (argc < 1)
{
command_print(cmd_ctx, "usage: virtex2 read_stat <num>");
return ERROR_OK;
}
device = get_pld_device_by_num(strtoul(args[0], NULL, 0));
if (!device)
{
command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]);
return ERROR_OK;
}
virtex2_info = device->driver_priv;
virtex2_read_stat(device, &status);
command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status);
return ERROR_OK;
}
int virtex2_register_commands(struct command_context_s *cmd_ctx)
{
command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands");
register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC,
"read Virtex-II status register");
return ERROR_OK;
}
int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device)
{
virtex2_pld_device_t *virtex2_info;
if (argc < 2)
{
LOG_WARNING("incomplete pld device 'virtex2' configuration");
return ERROR_PLD_DEVICE_INVALID;
}
virtex2_info = malloc(sizeof(virtex2_pld_device_t));
pld_device->driver_priv = virtex2_info;
virtex2_info->chain_pos = strtoul(args[1], NULL, 0);
return ERROR_OK;
}