247 lines
6.7 KiB
C
247 lines
6.7 KiB
C
/***************************************************************************
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* Copyright (C) 2006 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "virtex2.h"
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#include "xilinx_bit.h"
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#include "pld.h"
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static int virtex2_set_instr(struct jtag_tap *tap, uint32_t new_instr)
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{
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if (tap == NULL)
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return ERROR_FAIL;
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if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr) {
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struct scan_field field;
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field.num_bits = tap->ir_length;
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void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
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field.out_value = t;
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buf_set_u32(t, 0, field.num_bits, new_instr);
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field.in_value = NULL;
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jtag_add_ir_scan(tap, &field, TAP_IDLE);
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free(t);
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}
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return ERROR_OK;
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}
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static int virtex2_send_32(struct pld_device *pld_device,
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int num_words, uint32_t *words)
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{
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struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
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struct scan_field scan_field;
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uint8_t *values;
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int i;
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values = malloc(num_words * 4);
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scan_field.num_bits = num_words * 32;
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scan_field.out_value = values;
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scan_field.in_value = NULL;
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for (i = 0; i < num_words; i++)
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buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
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virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
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jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
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free(values);
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return ERROR_OK;
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}
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static inline void virtexflip32(jtag_callback_data_t arg)
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{
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uint8_t *in = (uint8_t *)arg;
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*((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
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}
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static int virtex2_receive_32(struct pld_device *pld_device,
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int num_words, uint32_t *words)
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{
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struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
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struct scan_field scan_field;
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scan_field.num_bits = 32;
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scan_field.out_value = NULL;
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scan_field.in_value = NULL;
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virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
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while (num_words--) {
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scan_field.in_value = (uint8_t *)words;
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jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
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jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
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words++;
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}
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return ERROR_OK;
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}
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static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
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{
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uint32_t data[5];
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jtag_add_tlr();
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data[0] = 0xaa995566; /* synch word */
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data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
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data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
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data[3] = 0x20000000; /* NOOP */
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data[4] = 0x20000000; /* NOOP */
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virtex2_send_32(pld_device, 5, data);
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virtex2_receive_32(pld_device, 1, status);
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jtag_execute_queue();
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LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
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return ERROR_OK;
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}
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static int virtex2_load(struct pld_device *pld_device, const char *filename)
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{
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struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
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struct xilinx_bit_file bit_file;
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int retval;
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unsigned int i;
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struct scan_field field;
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field.in_value = NULL;
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retval = xilinx_read_bit_file(&bit_file, filename);
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if (retval != ERROR_OK)
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return retval;
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virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
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jtag_execute_queue();
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jtag_add_sleep(1000);
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virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
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jtag_execute_queue();
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for (i = 0; i < bit_file.length; i++)
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bit_file.data[i] = flip_u32(bit_file.data[i], 8);
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field.num_bits = bit_file.length * 8;
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field.out_value = bit_file.data;
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jtag_add_dr_scan(virtex2_info->tap, 1, &field, TAP_DRPAUSE);
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jtag_execute_queue();
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jtag_add_tlr();
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virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
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jtag_add_runtest(13, TAP_IDLE);
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virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
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virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
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virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
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jtag_add_runtest(13, TAP_IDLE);
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virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
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jtag_execute_queue();
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return ERROR_OK;
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}
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COMMAND_HANDLER(virtex2_handle_read_stat_command)
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{
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struct pld_device *device;
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uint32_t status;
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if (CMD_ARGC < 1)
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return ERROR_COMMAND_SYNTAX_ERROR;
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unsigned dev_id;
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COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
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device = get_pld_device_by_num(dev_id);
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if (!device) {
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command_print(CMD_CTX, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
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return ERROR_OK;
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}
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virtex2_read_stat(device, &status);
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command_print(CMD_CTX, "virtex2 status register: 0x%8.8" PRIx32 "", status);
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return ERROR_OK;
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}
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PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
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{
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struct jtag_tap *tap;
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struct virtex2_pld_device *virtex2_info;
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if (CMD_ARGC < 2)
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return ERROR_COMMAND_SYNTAX_ERROR;
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tap = jtag_tap_by_string(CMD_ARGV[1]);
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if (tap == NULL) {
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command_print(CMD_CTX, "Tap: %s does not exist", CMD_ARGV[1]);
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return ERROR_OK;
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}
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virtex2_info = malloc(sizeof(struct virtex2_pld_device));
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virtex2_info->tap = tap;
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pld->driver_priv = virtex2_info;
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return ERROR_OK;
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}
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static const struct command_registration virtex2_exec_command_handlers[] = {
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{
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.name = "read_stat",
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.mode = COMMAND_EXEC,
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.handler = virtex2_handle_read_stat_command,
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.help = "read status register",
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.usage = "pld_num",
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},
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COMMAND_REGISTRATION_DONE
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};
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static const struct command_registration virtex2_command_handler[] = {
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{
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.name = "virtex2",
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.mode = COMMAND_ANY,
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.help = "Virtex-II specific commands",
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.usage = "",
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.chain = virtex2_exec_command_handlers,
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},
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COMMAND_REGISTRATION_DONE
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};
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struct pld_driver virtex2_pld = {
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.name = "virtex2",
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.commands = virtex2_command_handler,
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.pld_device_command = &virtex2_pld_device_command,
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.load = &virtex2_load,
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};
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