mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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129 lines
3.9 KiB
ArmAsm
129 lines
3.9 KiB
ArmAsm
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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---
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes ChibiOS/RT, without being obliged to provide
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the source code for any proprietary components. See the file exception.txt
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for full details of how and when the exception can be applied.
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*/
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;/* <<< Use Configuration Wizard in Context Menu >>> */
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;// <h> Main Stack Configuration (IRQ Stack)
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;// <o> Main Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;// </h>
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main_stack_size EQU 0x00000400
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;// <h> Process Stack Configuration
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;// <o> Process Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;// </h>
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proc_stack_size EQU 0x00000400
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;// <h> C-runtime heap size
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;// <o> C-runtime heap size (in Bytes) <0x0-0xFFFFFFFF:8>
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;// </h>
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heap_size EQU 0x00000400
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AREA MSTACK, NOINIT, READWRITE, ALIGN=3
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main_stack_mem SPACE main_stack_size
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EXPORT __initial_msp
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__initial_msp
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AREA CSTACK, NOINIT, READWRITE, ALIGN=3
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__main_thread_stack_base__
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EXPORT __main_thread_stack_base__
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proc_stack_mem SPACE proc_stack_size
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EXPORT __initial_sp
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__initial_sp
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AREA HEAP, NOINIT, READWRITE, ALIGN=3
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__heap_base
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Heap_Mem SPACE heap_size
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__heap_limit
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CONTROL_MODE_PRIVILEGED EQU 0
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CONTROL_MODE_UNPRIVILEGED EQU 1
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CONTROL_USE_MSP EQU 0
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CONTROL_USE_PSP EQU 2
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PRESERVE8
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THUMB
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AREA |.text|, CODE, READONLY
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/*
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* Reset handler.
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*/
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IMPORT __main
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EXPORT Reset_Handler
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Reset_Handler PROC
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cpsid i
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ldr r0, =__initial_sp
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msr PSP, r0
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movs r0, #CONTROL_MODE_PRIVILEGED :OR: CONTROL_USE_PSP
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msr CONTROL, r0
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isb
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bl __early_init
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IF {CPU} = "Cortex-M4.fp"
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LDR R0, =0xE000ED88 ; Enable CP10,CP11
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LDR R1, [R0]
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ORR R1, R1, #(0xF << 20)
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STR R1, [R0]
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ENDIF
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ldr r0, =__main
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bx r0
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ENDP
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__early_init PROC
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EXPORT __early_init [WEAK]
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bx lr
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ENDP
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ALIGN
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/*
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* User Initial Stack & Heap.
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*/
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IF :DEF:__MICROLIB
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EXPORT __initial_sp
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EXPORT __heap_base
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EXPORT __heap_limit
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ELSE
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IMPORT __use_two_region_memory
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EXPORT __user_initial_stackheap
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__user_initial_stackheap
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ldr r0, =Heap_Mem
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ldr r1, =(proc_stack_mem + proc_stack_size)
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ldr r2, =(Heap_Mem + heap_size)
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ldr r3, =proc_stack_mem
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bx lr
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ALIGN
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ENDIF
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END
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