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