| // 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 |
| |
| #include "defines.h" |
| |
| #define STDOUT 0xd0580000 |
| |
| |
| // Code to execute |
| .section .text |
| .global _start |
| _start: |
| |
| csrw minstret, zero |
| csrw minstreth, zero |
| li x1, 0x5f555555 |
| csrw 0x7c0, x1 |
| li x1, 4 |
| csrw 0x7f9, x1 |
| nop |
| |
| li x8,0xf0040000 //For Load |
| li x19,STDOUT //B.addr |
| |
| li x5,4 //A1 of matrix |
| sb x5,0(x8) |
| li x5,3 //A2 of matrix |
| sb x5,1(x8) |
| li x5,1 //A3 of matrix |
| sb x5,2(x8) |
| li x5,2 //A4 of matrix |
| sb x5,3(x8) |
| |
| //Determinent |
| lb x5,0(x8) |
| lb x6,3(x8) |
| mul x7,x5,x6 //Multiply diagonal A1 and A4 |
| lb x5,1(x8) |
| lb x6,2(x8) |
| mul x8,x5,x6 //Multiply diagonal A2 and A3 |
| sub x5,x7,x8 //Determinent result |
| sb x5,5(x8) //Save to DCCM |
| sb x5,0(x19) //Save to AXI |
| |
| // Write 0xff to STDOUT for TB to termiate test. |
| _finish: |
| li x3, STDOUT |
| addi x5, x0, 0xff |
| sb x5, 0(x3) |
| beq x0, x0, _finish |
| .rept 100 |
| nop |
| .endr |
| |
