| // SPDX-FileCopyrightText: 2021 Anish Singhani |
| // |
| // 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 |
| #include "verilog/dv/caravel/defs.h" |
| #include "verilog/dv/caravel/stub.c" |
| #include "printio.h" |
| |
| uint32_t get_prog(uint32_t pc); |
| |
| void main() { |
| uint16_t buf[256]; |
| |
| reg_spimaster_config = 0xA002; // Allow use of pin3 |
| reg_mprj_xfer = 1; |
| while (reg_mprj_xfer == 1); |
| |
| // Configure LA[63:0] as core -> caravel |
| // Configure LA[127:64] as caravel -> core |
| reg_la0_oenb = reg_la0_iena = 0xFFFFFFFF; // [31:0] |
| reg_la1_oenb = reg_la1_iena = 0xFFFFFFFF; // [63:32] |
| reg_la2_oenb = reg_la2_iena = 0x00000000; // [95:64] |
| reg_la3_oenb = reg_la3_iena = 0x00000000; // [127:96] |
| |
| // First test - small data |
| printstr("gmorn\n"); |
| |
| // Wait for instr read |
| while (true) { |
| while (!(reg_la1_data & 0x00030000)) { |
| if (reg_la1_data & 0x00100000) endtest(); |
| } |
| |
| if (reg_la1_data & 0x00010000) { // IF |
| uint32_t pc = reg_la0_data & 0x0000FFFF; |
| printstr("I"); |
| printhex(pc, true); |
| |
| reg_la2_data = (get_prog(pc) << 16) | get_prog(pc + 2); |
| reg_la3_data = 0x3; // STB, ACK |
| reg_la3_data = 0x0; // no STB, ACK |
| |
| |
| } else if (reg_la1_data & 0x00040000) { // DWrite |
| uint32_t adr = reg_la0_data >> 16; |
| uint32_t dat = reg_la1_data & 0x0000FFFF; |
| printstr("DW"); |
| printhex(adr, false); |
| printstr("="); |
| printhex(dat, true); |
| buf[adr & 0xFF] = dat; |
| reg_la3_data = 0xC; // STB, ACK |
| reg_la3_data = 0x0; // no STB, ACK |
| |
| } else { // DRead |
| uint32_t adr = reg_la0_data >> 16; |
| printstr("DR"); |
| printhex(adr, true); |
| reg_la2_data = buf[adr & 0xFF]; |
| reg_la3_data = 0xC; // STB, ACK |
| reg_la3_data = 0x0; // no STB, ACK |
| } |
| } |
| |
| endtest(); |
| } |
| |
| uint32_t get_prog(uint32_t pc) { |
| switch (pc) { |
| case 0: return 0xF800; |
| case 2: return 0x0020; |
| case 4: return 0x31C0; |
| case 6: return 0xABCD; |
| case 8: return 0x3807; |
| case 10: return 0x9000; |
| case 12: return 0x3800; |
| case 14: return 0x9002; |
| case 16: return 0xFE00; |
| case 18: return 0x31C0; |
| case 20: return 0x0001; |
| case 22: return 0x3807; |
| case 24: return 0x9000; |
| case 26: return 0x3801; |
| case 28: return 0x9002; |
| case 30: return 0xFE00; |
| case 32: return 0x0000; |
| case 34: return 0x3040; |
| case 36: return 0x0001; |
| case 38: return 0x3100; |
| case 40: return 0x8000; |
| case 42: return 0x3140; |
| case 44: return 0x7FFF; |
| case 46: return 0x00E5; |
| case 48: return 0x3080; |
| case 50: return 0xFFFF; |
| case 52: return 0x1013; |
| case 54: return 0xC800; |
| case 56: return 0x003E; |
| case 58: return 0xF800; |
| case 60: return 0x0012; |
| case 62: return 0x2000; |
| case 64: return 0x3040; |
| case 66: return 0x0002; |
| case 68: return 0x3100; |
| case 70: return 0x8000; |
| case 72: return 0x3140; |
| case 74: return 0x7FFF; |
| case 76: return 0x00E5; |
| case 78: return 0xC800; |
| case 80: return 0x0012; |
| case 82: return 0xF800; |
| case 84: return 0x0056; |
| case 86: return 0x2000; |
| case 88: return 0x3040; |
| case 90: return 0x0003; |
| case 92: return 0x3100; |
| case 94: return 0x8000; |
| case 96: return 0x3140; |
| case 98: return 0x7FFF; |
| case 100: return 0x00E5; |
| case 102: return 0xA800; |
| case 104: return 0x0012; |
| case 106: return 0xF800; |
| case 108: return 0x006E; |
| case 110: return 0x2000; |
| case 112: return 0x3040; |
| case 114: return 0x0004; |
| case 116: return 0x3100; |
| case 118: return 0x8000; |
| case 120: return 0x3140; |
| case 122: return 0x7FFF; |
| case 124: return 0x00E5; |
| case 126: return 0x9800; |
| case 128: return 0x0086; |
| case 130: return 0xF800; |
| case 132: return 0x0012; |
| case 134: return 0x2000; |
| case 136: return 0x3040; |
| case 138: return 0x0005; |
| case 140: return 0x3100; |
| case 142: return 0x8000; |
| case 144: return 0x3140; |
| case 146: return 0x7FFF; |
| case 148: return 0x00E5; |
| case 150: return 0xB800; |
| case 152: return 0x0012; |
| case 154: return 0xF800; |
| case 156: return 0x009E; |
| case 158: return 0x2000; |
| case 160: return 0x3040; |
| case 162: return 0x0006; |
| case 164: return 0x3100; |
| case 166: return 0x8000; |
| case 168: return 0xF2E0; |
| case 170: return 0x000F; |
| case 172: return 0x3080; |
| case 174: return 0xFFFF; |
| case 176: return 0x1013; |
| case 178: return 0xC800; |
| case 180: return 0x00BA; |
| case 182: return 0xF800; |
| case 184: return 0x0012; |
| case 186: return 0x2000; |
| case 188: return 0x3040; |
| case 190: return 0x0007; |
| case 192: return 0x3100; |
| case 194: return 0x8000; |
| case 196: return 0x3140; |
| case 198: return 0x0000; |
| case 200: return 0x80E0; |
| case 202: return 0x3080; |
| case 204: return 0x7FFF; |
| case 206: return 0x1013; |
| case 208: return 0xC800; |
| case 210: return 0x00D8; |
| case 212: return 0xF800; |
| case 214: return 0x0012; |
| case 216: return 0x2000; |
| case 218: return 0x3040; |
| case 220: return 0x0008; |
| case 222: return 0x30C0; |
| case 224: return 0xABCD; |
| case 226: return 0x3080; |
| case 228: return 0xA000; |
| case 230: return 0x3813; |
| case 232: return 0x0323; |
| case 234: return 0x3100; |
| case 236: return 0x0323; |
| case 238: return 0x2920; |
| case 240: return 0xA000; |
| case 242: return 0x5220; |
| case 244: return 0xABCD; |
| case 246: return 0xC800; |
| case 248: return 0x00FE; |
| case 250: return 0xF800; |
| case 252: return 0x0012; |
| case 254: return 0x2000; |
| case 256: return 0xF800; |
| case 258: return 0x0004; |
| default: return 0x0000; |
| } |
| } |
| |
| |
