mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-21 07:27:43 +00:00
129 lines
3.9 KiB
ArmAsm
129 lines
3.9 KiB
ArmAsm
|
/*
|
||
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
|
||
|
|
2011,2012,2013 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
|