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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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "virtex2.h"
#include "xilinx_bit.h"
#include "pld.h"
static int virtex2_register_commands(struct command_context_s *cmd_ctx);
static int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device);
static 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,
};
static int virtex2_set_instr(jtag_tap_t *tap, uint32_t new_instr)
{
if (tap == NULL)
return ERROR_FAIL;
if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
{
scan_field_t field;
field.tap = tap;
field.num_bits = tap->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.in_value = NULL;
jtag_add_ir_scan(1, &field, jtag_set_end_state(TAP_IDLE));
free(field.out_value);
}
return ERROR_OK;
}
static int virtex2_send_32(struct pld_device_s *pld_device,
int num_words, uint32_t *words)
{
virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
scan_field_t scan_field;
uint8_t *values;
int i;
values = malloc(num_words * 4);
scan_field.tap = virtex2_info->tap;
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(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
free(values);
return ERROR_OK;
}
static __inline__ void virtexflip32(uint8_t *in)
{
*((uint32_t *)in) = flip_u32(le_to_h_u32(in), 32);
}
static int virtex2_receive_32(struct pld_device_s *pld_device,
int num_words, uint32_t *words)
{
virtex2_pld_device_t *virtex2_info = pld_device->driver_priv;
scan_field_t scan_field;
scan_field.tap = virtex2_info->tap;
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(1, &scan_field, jtag_set_end_state(TAP_DRPAUSE));
jtag_add_callback(virtexflip32, (uint8_t *)words);
words++;;
}
return ERROR_OK;
}
static int virtex2_read_stat(struct pld_device_s *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%8.8x", *status);
return ERROR_OK;
}
static 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;
unsigned int i;
scan_field_t field;
field.tap = virtex2_info->tap;
field.in_value = NULL;
if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK)
return retval;
jtag_set_end_state(TAP_IDLE);
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(1, &field, jtag_set_end_state(TAP_DRPAUSE));
jtag_execute_queue();
jtag_add_tlr();
jtag_set_end_state(TAP_IDLE);
virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
jtag_add_runtest(13, jtag_set_end_state(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, jtag_set_end_state(TAP_IDLE));
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
jtag_execute_queue();
return ERROR_OK;
}
static 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;
uint32_t 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;
}
static 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;
}
static int virtex2_pld_device_command(struct command_context_s *cmd_ctx,
char *cmd, char **args, int argc, struct pld_device_s *pld_device)
{
jtag_tap_t *tap;
virtex2_pld_device_t *virtex2_info;
if (argc < 2)
{
LOG_WARNING("incomplete pld device 'virtex2' configuration");
return ERROR_PLD_DEVICE_INVALID;
}
tap = jtag_tap_by_string(args[1]);
if (tap == NULL) {
command_print( cmd_ctx, "Tap: %s does not exist", args[1] );
return ERROR_OK;
}
virtex2_info = malloc(sizeof(virtex2_pld_device_t));
pld_device->driver_priv = virtex2_info;
virtex2_info->tap = tap;
return ERROR_OK;
}
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