1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /***************************************************************************
4 * Copyright (C) 2006 by Dominic Rath *
5 * Dominic.Rath@gmx.de *
6 ***************************************************************************/
13 #include "xilinx_bit.h"
16 static int virtex2_set_instr(struct jtag_tap *tap, uint32_t new_instr)
21 if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr) {
22 struct scan_field field;
24 field.num_bits = tap->ir_length;
25 void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
27 buf_set_u32(t, 0, field.num_bits, new_instr);
28 field.in_value = NULL;
30 jtag_add_ir_scan(tap, &field, TAP_IDLE);
38 static int virtex2_send_32(struct pld_device *pld_device,
39 int num_words, uint32_t *words)
41 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
42 struct scan_field scan_field;
46 values = malloc(num_words * 4);
48 scan_field.num_bits = num_words * 32;
49 scan_field.out_value = values;
50 scan_field.in_value = NULL;
52 for (i = 0; i < num_words; i++)
53 buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
55 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
57 jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
64 static inline void virtexflip32(jtag_callback_data_t arg)
66 uint8_t *in = (uint8_t *)arg;
67 *((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
70 static int virtex2_receive_32(struct pld_device *pld_device,
71 int num_words, uint32_t *words)
73 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
74 struct scan_field scan_field;
76 scan_field.num_bits = 32;
77 scan_field.out_value = NULL;
78 scan_field.in_value = NULL;
80 virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
83 scan_field.in_value = (uint8_t *)words;
85 jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
87 jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
95 static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
101 data[0] = 0xaa995566; /* synch word */
102 data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
103 data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
104 data[3] = 0x20000000; /* NOOP */
105 data[4] = 0x20000000; /* NOOP */
106 virtex2_send_32(pld_device, 5, data);
108 virtex2_receive_32(pld_device, 1, status);
110 jtag_execute_queue();
112 LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
117 static int virtex2_load(struct pld_device *pld_device, const char *filename)
119 struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
120 struct xilinx_bit_file bit_file;
123 struct scan_field field;
125 field.in_value = NULL;
127 retval = xilinx_read_bit_file(&bit_file, filename);
128 if (retval != ERROR_OK)
131 virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
132 jtag_execute_queue();
133 jtag_add_sleep(1000);
135 virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
136 jtag_execute_queue();
138 for (i = 0; i < bit_file.length; i++)
139 bit_file.data[i] = flip_u32(bit_file.data[i], 8);
141 field.num_bits = bit_file.length * 8;
142 field.out_value = bit_file.data;
144 jtag_add_dr_scan(virtex2_info->tap, 1, &field, TAP_DRPAUSE);
145 jtag_execute_queue();
149 if (!(virtex2_info->no_jstart))
150 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
151 jtag_add_runtest(13, TAP_IDLE);
152 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
153 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
154 if (!(virtex2_info->no_jstart))
155 virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
156 jtag_add_runtest(13, TAP_IDLE);
157 virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
158 jtag_execute_queue();
163 COMMAND_HANDLER(virtex2_handle_read_stat_command)
165 struct pld_device *device;
169 return ERROR_COMMAND_SYNTAX_ERROR;
172 COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
173 device = get_pld_device_by_num(dev_id);
175 command_print(CMD, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
179 virtex2_read_stat(device, &status);
181 command_print(CMD, "virtex2 status register: 0x%8.8" PRIx32 "", status);
186 PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
188 struct jtag_tap *tap;
190 struct virtex2_pld_device *virtex2_info;
193 return ERROR_COMMAND_SYNTAX_ERROR;
195 tap = jtag_tap_by_string(CMD_ARGV[1]);
197 command_print(CMD, "Tap: %s does not exist", CMD_ARGV[1]);
201 virtex2_info = malloc(sizeof(struct virtex2_pld_device));
202 virtex2_info->tap = tap;
204 virtex2_info->no_jstart = 0;
206 COMMAND_PARSE_NUMBER(int, CMD_ARGV[2], virtex2_info->no_jstart);
208 pld->driver_priv = virtex2_info;
213 static const struct command_registration virtex2_exec_command_handlers[] = {
216 .mode = COMMAND_EXEC,
217 .handler = virtex2_handle_read_stat_command,
218 .help = "read status register",
221 COMMAND_REGISTRATION_DONE
223 static const struct command_registration virtex2_command_handler[] = {
227 .help = "Virtex-II specific commands",
229 .chain = virtex2_exec_command_handlers,
231 COMMAND_REGISTRATION_DONE
234 struct pld_driver virtex2_pld = {
236 .commands = virtex2_command_handler,
237 .pld_device_command = &virtex2_pld_device_command,
238 .load = &virtex2_load,