/*************************************************************************** * 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) { 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, };