forked from Github_Repos/cvw
164 lines
3.9 KiB
ArmAsm
164 lines
3.9 KiB
ArmAsm
///////////////////////////////////////////
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// tlbMP.S
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//
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// Written: mmendozamanriquez@hmc.edu 4 April 2023
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// nlimpert@hmc.edu
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//
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// Purpose: Test coverage for LSU
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//
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// A component of the CORE-V-WALLY configurable RISC-V project.
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//
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// Copyright (C) 2021-23 Harvey Mudd College & Oklahoma State University
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//
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// SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
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//
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// Licensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file
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// except in compliance with the License, or, at your option, the Apache License version 2.0. You
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// may obtain a copy of the License at
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//
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// https://solderpad.org/licenses/SHL-2.1/
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//
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// Unless required by applicable law or agreed to in writing, any work distributed under the
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// License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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////////////////////////////////////////////////////////////////////////////////////////////////
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// load code to initalize stack, handle interrupts, terminate
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#include "WALLY-init-lib.h"
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# run-elf.bash find this in project description
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main:
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# Page table root address at 0x80010000
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li t5, 0x9000000000080010
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csrw satp, t5
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# sfence.vma x0, x0
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# switch to supervisor mode
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li a0, 1
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ecall
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li t5, 0
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li t0, 0x84000000 // go to first megapage
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li t4, 0x1000 // put this outside the loop.
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li t2, 0 # i = 0
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li t3, 32 # Max amount of Loops = 16
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loop: bge t2, t3, lKP # exit loop if i >= loops
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lw t1, 0(t0)
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add t0, t0, t4
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addi t2, t2, 1
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j loop
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lKP: bne t5, zero, finished
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li t0, 0x80000000
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slli t4, t4, 9
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addi t5, t5, 1
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li t2, 0
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j loop
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finished:
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j done
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.data
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.align 16
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# Page table situated at 0x80010000
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pagetable:
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.8byte 0x200044C1
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.align 12
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.8byte 0x00000000200048C1
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.8byte 0x00000000200048C1
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.8byte 0x00000000200048C1
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.align 12 // megapages starting at 8000 0000 going to 8480 0000 (32*2 MiB beyond that)
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.8byte 0x200000CF // access 8000,0000
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.8byte 0x200800CF // access 8020,0000
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.8byte 0x201000CF // acesss 8040,0000
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.8byte 0x201800CF // acesss 8060,0000
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.8byte 0x202000CF // access 8080,0000
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.8byte 0x202800CF // access 80A0,0000
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.8byte 0x203000CF // access 80C0,0000
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.8byte 0x203800CF // access 80E0,0000
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.8byte 0x204000CF // access 8100,0000
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.8byte 0x204800CF
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.8byte 0x205000CF
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.8byte 0x205800CF
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.8byte 0x206000CF // access 8180,0000
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.8byte 0x206800CF
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.8byte 0x207000CF
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.8byte 0x207800CF
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.8byte 0x208000CF // access 8200,0000
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.8byte 0x208800CF
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.8byte 0x209000CF
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.8byte 0x209800CF
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.8byte 0x20A000CF // access 8280,0000
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.8byte 0x20A800CF
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.8byte 0x20B000CF
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.8byte 0x20B800CF
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.8byte 0x20C000CF // access 8300,0000
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.8byte 0x20C800CF
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.8byte 0x20D000CF
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.8byte 0x20D800CF
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.8byte 0x20E000CF // access 8380,0000
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.8byte 0x20E800CF
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.8byte 0x20F000CF
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.8byte 0x20F800CF
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.8byte 0x20004CC1
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// Kilopage entry, for addresses from 8400, 0000 to 841F, FFFF
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// point to ...
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.align 12 // should start at 84000000
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.8byte 0x210000CF
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.8byte 0x210004CF
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.8byte 0x210008CF
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.8byte 0x21000CCF
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.8byte 0x210010CF
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.8byte 0x210014CF
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.8byte 0x210018CF
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.8byte 0x21001CCF
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.8byte 0x210020CF
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.8byte 0x210024CF
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.8byte 0x210028CF
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.8byte 0x21002CCF
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.8byte 0x210030CF
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.8byte 0x210034CF
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.8byte 0x210038CF
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.8byte 0x21003CCF
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.8byte 0x210040CF
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.8byte 0x210044CF
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.8byte 0x210048CF
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.8byte 0x21004CCF
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.8byte 0x210050CF
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.8byte 0x210054CF
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.8byte 0x210058CF
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.8byte 0x21005CCF
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.8byte 0x210060CF
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.8byte 0x210064CF
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.8byte 0x210068CF
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.8byte 0x21006CCF
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.8byte 0x210070CF
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.8byte 0x210074CF
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.8byte 0x210078CF
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.8byte 0x21007CCF
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