| /* |
| * SPDX-FileCopyrightText: 2020 Efabless Corporation |
| * |
| * 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" |
| #include "verilog/dv/caravel/stub.c" |
| |
| |
| // -------------------------------------------------------- |
| // |
| |
| #define BASE_ADDR 0x30000000 |
| #define IMEM_WRITE BASE_ADDR |
| #define UART_CLK_FREQ BASE_ADDR + 0x4 |
| |
| static void |
| write(uint32_t addr, uint32_t val) |
| { |
| *(volatile uint32_t *)addr = val; |
| } |
| |
| void |
| reset() |
| { |
| reg_mprj_io_37 = GPIO_MODE_MGMT_STD_OUTPUT; |
| reg_la0_iena = 0; |
| reg_la0_oenb = 0; |
| |
| reg_la0_data = 0; |
| reg_mprj_xfer = 1; |
| while (reg_mprj_xfer == 1); |
| } |
| |
| void |
| main() |
| { |
| #include "instr.c" |
| reg_spimaster_config = 0xa002; |
| |
| reset(); |
| |
| // set reset to high |
| reg_la0_data = 1; |
| |
| // set uart clk frequency |
| write(UART_CLK_FREQ, 40000000); |
| |
| for(int i = 0; i < 29; ++i) { |
| write(IMEM_WRITE, i << 8 | mem[i]); |
| } |
| |
| // reg_la0_data = 1 << 16 | 0x00 << 8 | 0b11000000; // ldih 0 0xC0 |
| // reg_la0_data = 1 << 16 | 0x01 << 8 | 0b11010000; // ldil 0 0xD0 |
| // reg_la0_data = 1 << 16 | 0x02 << 8 | 0b10110011; // jmp r3 0xB3 |
| |
| reg_la0_data = 0; |
| |
| while(1) {} |
| } |
| |