mirror of
https://github.com/openhwgroup/cvw
synced 2025-02-11 06:05:49 +00:00
159 lines
3.4 KiB
ArmAsm
159 lines
3.4 KiB
ArmAsm
///////////////////////////////////////////
|
|
// tlbGP.S
|
|
//
|
|
// Written: mmendozamanriquez@hmc.edu 4 April 2023
|
|
// nlimpert@hmc.edu
|
|
//
|
|
// Purpose: Create Page tables and access gigapages
|
|
//
|
|
// A component of the CORE-V-WALLY configurable RISC-V project.
|
|
//
|
|
// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
|
|
//
|
|
// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
|
|
// except in compliance with the License, or, at your option, the Apache License version 2.0. You
|
|
// may obtain a copy of the License at
|
|
//
|
|
// https://solderpad.org/licenses/SHL-2.1/
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, any work 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.
|
|
////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// load code to initalize stack, handle interrupts, terminate
|
|
|
|
#include "WALLY-init-lib.h"
|
|
|
|
# run-elf.bash find this in project description
|
|
main:
|
|
# Page table root address at 0x80010000
|
|
li t5, 0x9000000000080010
|
|
csrw satp, t5
|
|
|
|
# sfence.vma x0, x0
|
|
|
|
# switch to supervisor mode
|
|
li a0, 1
|
|
ecall
|
|
li t5, 0
|
|
li t0, 0xC0200000 // go to first gigapage
|
|
li t4, 0x40000000 // put this outside the loop.
|
|
li t2, 0 # i = 0
|
|
li t3, 64 # Max amount of Loops = 16
|
|
|
|
loop: bge t2, t3, finished # exit loop if i >= loops
|
|
lw t1, 0(t0)
|
|
li t1, 0x00008067 #load in jalr
|
|
sw t1, 0(t0)
|
|
fence.I
|
|
jalr t0
|
|
add t0, t0, t4
|
|
addi t2, t2, 1
|
|
j loop
|
|
|
|
finished:
|
|
j done
|
|
|
|
.data
|
|
|
|
.align 16
|
|
# Page table situated at 0x80010000
|
|
pagetable:
|
|
.8byte 0x200044C1
|
|
|
|
.align 12
|
|
.8byte 0x000000CF //8000 0000
|
|
.8byte 0x100000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
.8byte 0x200000CF
|
|
|
|
|
|
|
|
|
|
|