| /* |
| * SPDX-FileCopyrightText: 2021 Moscow State University |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| // This include is relative to $CARAVEL_PATH (see Makefile) |
| #include "verilog/dv/caravel/defs.h" |
| |
| /* |
| FPGA config loader via WB |
| */ |
| |
| // Address defines |
| #define OFF_CONFIG_LBLOCK 0x100000 |
| #define OFF_CONFIG_VRNODE 0x200000 |
| #define OFF_CONFIG_HRNODE 0x300000 |
| #define OFF_CONFIG_TAPCLK 0xE00000 |
| #define OFF_CONFIG_RSTCFG 0xA00000 |
| |
| #define OFF_CNT_ADDR 0xF000F0 |
| |
| #define write_user_reg(off, val) {(*(volatile uint32_t*)(0x30000000 + off)) = val;} |
| #define read_user_reg(off) (*(volatile uint32_t*)(0x30000000 + off)) |
| |
| // Include bitstream data |
| #include "wb_cnt.txt_lb_bit.h" |
| #include "wb_cnt.txt_vn_bit.h" |
| #include "wb_cnt.txt_hn_bit.h" |
| |
| void main() |
| { |
| // Caravel setup stuff |
| |
| reg_spimaster_config = 0xa002; |
| |
| reg_mprj_io_37 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_36 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_35 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_34 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_33 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_32 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_31 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_30 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_29 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_28 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_27 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_26 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_25 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_24 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_23 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_22 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_21 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_20 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_19 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_18 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_17 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_16 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_15 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_14 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_13 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_12 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_11 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_10 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_9 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_8 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_7 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_6 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_5 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_4 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_3 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_2 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_1 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| reg_mprj_io_0 = GPIO_MODE_USER_STD_BIDIRECTIONAL; |
| |
| // Apply configuration |
| reg_mprj_xfer = 1; |
| while (reg_mprj_xfer == 1); |
| reg_la2_oenb = reg_la2_iena = 0xFFFFFFFF; // [95:64] |
| |
| // Reset FPGA & terminate pads |
| write_user_reg(OFF_CONFIG_RSTCFG, 3); |
| |
| // Load config |
| for (int i = 0; i < lblock_config_words; ++i) |
| { |
| // logic blocks |
| write_user_reg(OFF_CONFIG_LBLOCK, lblock_config_data[i]); |
| write_user_reg(OFF_CONFIG_TAPCLK, 1); |
| write_user_reg(OFF_CONFIG_TAPCLK, 0); |
| } |
| |
| for (int i = 0; i < vnode_config_words; ++i) |
| { |
| // vertical routing nodes |
| write_user_reg(OFF_CONFIG_VRNODE, vnode_config_data[i]); |
| write_user_reg(OFF_CONFIG_TAPCLK, 2); |
| write_user_reg(OFF_CONFIG_TAPCLK, 0); |
| } |
| |
| for (int i = 0; i < hnode_config_words; ++i) |
| { |
| // horizontal routing nodes |
| write_user_reg(OFF_CONFIG_HRNODE, hnode_config_data[i]); |
| write_user_reg(OFF_CONFIG_TAPCLK, 4); |
| write_user_reg(OFF_CONFIG_TAPCLK, 0); |
| } |
| |
| // Release pads & FPGA reset |
| write_user_reg(OFF_CONFIG_RSTCFG, 1); |
| write_user_reg(OFF_CONFIG_RSTCFG, 0); |
| |
| // Reset WB logic in FPGA fabric |
| write_user_reg(OFF_CONFIG_RSTCFG, 8); |
| write_user_reg(OFF_CONFIG_RSTCFG, 0); |
| |
| // Increment counter for test |
| write_user_reg(OFF_CNT_ADDR, 0); |
| read_user_reg(OFF_CNT_ADDR); |
| } |