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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_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)
- {
- 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(jtag_callback_data_t arg)
- {
- uint8_t *in = (uint8_t *)arg;
- *((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, (jtag_callback_data_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%8.8" PRIx32 "", *status);
-
- return ERROR_OK;
- }
-
- static int virtex2_load(struct pld_device_s *pld_device, const 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;
- }
-
- COMMAND_HANDLER(virtex2_handle_read_stat_command)
- {
- 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;
- }
-
- unsigned dev_id;
- COMMAND_PARSE_NUMBER(uint, args[0], dev_id);
- device = get_pld_device_by_num(dev_id);
- 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%8.8" PRIx32 "", status);
-
- return ERROR_OK;
- }
-
- PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
- {
- struct jtag_tap *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));
- virtex2_info->tap = tap;
-
- pld->driver_priv = virtex2_info;
-
- 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;
- }
-
- pld_driver_t virtex2_pld = {
- .name = "virtex2",
- .register_commands = &virtex2_register_commands,
- .pld_device_command = &virtex2_pld_device_command,
- .load = &virtex2_load,
- };
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