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Add RXv1 port.

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This commit is contained in:
Tiejun Zhou
2021-09-24 10:52:11 +08:00
parent d0dab58250
commit 06064828ef
30 changed files with 4884 additions and 0 deletions
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93
ports/rxv1/gnu/src/tx_initialize_low_level.S Normal file
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;/**************************************************************************/
;/* */
;/* Copyright (c) Microsoft Corporation. All rights reserved. */
;/* */
;/* This software is licensed under the Microsoft Software License */
;/* Terms for Microsoft Azure RTOS. Full text of the license can be */
;/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
;/* and in the root directory of this software. */
;/* */
;/**************************************************************************/
;
;
;/**************************************************************************/
;/**************************************************************************/
;/** */
;/** ThreadX Component */
;/** */
;/** Initialize */
;/** */
;/**************************************************************************/
;/**************************************************************************/
;
.text
;
;/**************************************************************************/
;/* */
;/* FUNCTION RELEASE */
;/* */
;/* _tx_initialize_low_level RXv1/GNURX */
;/* 6.1.8 */
;/* AUTHOR */
;/* */
;/* William E. Lamie, Microsoft Corporation */
;/* */
;/* DESCRIPTION */
;/* */
;/* This function is responsible for any low-level processor */
;/* initialization, including setting up interrupt vectors, setting */
;/* up a periodic timer interrupt source, saving the system stack */
;/* pointer for use in ISR processing later, and finding the first */
;/* available RAM memory address for tx_application_define. */
;/* */
;/* INPUT */
;/* */
;/* None */
;/* */
;/* OUTPUT */
;/* */
;/* None */
;/* */
;/* CALLS */
;/* */
;/* None */
;/* */
;/* CALLED BY */
;/* */
;/* _tx_initialize_kernel_enter ThreadX entry function */
;/* */
;/* RELEASE HISTORY */
;/* */
;/* DATE NAME DESCRIPTION */
;/* */
;/* 08-02-2021 William E. Lamie Initial Version 6.1.8 */
;/* */
;/**************************************************************************/
.global __tx_initialize_low_level
__tx_initialize_low_level:
;
; /* Save the first available memory address. */
; _tx_initialize_unused_memory = (VOID_PTR) &free_mem_start;
;
MOV.L #_end, R1 ; Pickup unused memory address
MOV.L #__tx_initialize_unused_memory, R2
MOV.L R1,[R2] ; Save first free memory address
; /* Set priority of SWINT to 1. */
MOV.L #0x87303, r1
MOV.L #1, r2
MOV.B r2, [r1]
; /* Enable SWINT. */
MOV.L #0x87203,r1
MOV.B [r1], r2
OR #(1 << 3), r2
MOV.B r2, [r1]
RTS
.end