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|
;******************************************************************************
;
;! @file startup_keil.s
;!
;! @brief Definitions for Apollo2 interrupt handlers, the vector table, and the stack.
;
;******************************************************************************
;******************************************************************************
;
; Copyright (c) 2017, Ambiq Micro
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
;
; 1. Redistributions of source code must retain the above copyright notice,
; this list of conditions and the following disclaimer.
;
; 2. Redistributions in binary form must reproduce the above copyright
; notice, this list of conditions and the following disclaimer in the
; documentation and/or other materials provided with the distribution.
;
; 3. Neither the name of the copyright holder nor the names of its
; contributors may be used to endorse or promote products derived from this
; software without specific prior written permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
; ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
; INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
; CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
; ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
;
; This is part of revision 1.2.9 of the AmbiqSuite Development Package.
;
;******************************************************************************
;******************************************************************************
;
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
;************************************************************************
Stack EQU 0x00001000
;******************************************************************************
;
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
;
;******************************************************************************
Heap EQU 0x00000000
;******************************************************************************
;
; Allocate space for the stack.
;
;******************************************************************************
AREA STACK, NOINIT, READWRITE, ALIGN=3
StackMem
SPACE Stack
__initial_sp
;******************************************************************************
;
; Allocate space for the heap.
;
;******************************************************************************
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
HeapMem
SPACE Heap
__heap_limit
;******************************************************************************
;
; Indicate that the code in this file preserves 8-byte alignment of the stack.
;
;******************************************************************************
PRESERVE8
;******************************************************************************
;
; Place code into the reset code section.
;
;******************************************************************************
AREA RESET, CODE, READONLY
THUMB
;******************************************************************************
;
; The vector table.
;
;******************************************************************************
;
; Note: Aliasing and weakly exporting am_mpufault_isr, am_busfault_isr, and
; am_usagefault_isr does not work if am_fault_isr is defined externally.
; Therefore, we'll explicitly use am_fault_isr in the table for those vectors.
;
EXPORT __Vectors
__Vectors
DCD StackMem + Stack ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
DCD MemoryManagement_Handler ; The MPU fault handler
DCD BusFault_Handler ; The bus fault handler
DCD UsageFault_Handler ; The usage fault handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD SVC_Handler ; SVCall handler
DCD DebugMon_Handler ; Debug monitor handler
DCD 0 ; Reserved
DCD PendSV_Handler ; The PendSV handler
DCD SysTick_Handler ; The SysTick handler
; Peripheral Interrupts
DCD am_brownout_isr ; 0: Reserved
DCD am_watchdog_isr ; 1: Reserved
DCD am_clkgen_isr ; 2: CLKGEN
DCD am_vcomp_isr ; 3: Voltage Comparator
DCD am_ioslave_ios_isr ; 4: I/O Slave general
DCD am_ioslave_acc_isr ; 5: I/O Slave access
DCD am_iomaster0_isr ; 6: I/O Master 0
DCD am_iomaster1_isr ; 7: I/O Master 1
DCD am_iomaster2_isr ; 8: I/O Master 2
DCD am_iomaster3_isr ; 9: I/O Master 3
DCD am_iomaster4_isr ; 10: I/O Master 4
DCD am_iomaster5_isr ; 11: I/O Master 5
DCD am_gpio_isr ; 12: GPIO
DCD am_ctimer_isr ; 13: CTIMER
DCD am_uart0_isr ; 14: UART0
DCD am_uart1_isr ; 15: UART1
DCD am_adc_isr ; 16: ADC
DCD am_pdm_isr ; 17: PDM
DCD am_stimer_isr ; 18: SYSTEM TIMER
DCD am_stimer_cmpr0_isr ; 19: SYSTEM TIMER COMPARE0
DCD am_stimer_cmpr1_isr ; 20: SYSTEM TIMER COMPARE1
DCD am_stimer_cmpr2_isr ; 21: SYSTEM TIMER COMPARE2
DCD am_stimer_cmpr3_isr ; 22: SYSTEM TIMER COMPARE3
DCD am_stimer_cmpr4_isr ; 23: SYSTEM TIMER COMPARE4
DCD am_stimer_cmpr5_isr ; 24: SYSTEM TIMER COMPARE5
DCD am_stimer_cmpr6_isr ; 25: SYSTEM TIMER COMPARE6
DCD am_stimer_cmpr7_isr ; 26: SYSTEM TIMER COMPARE7
DCD am_flash_isr ; 27: FLASH
DCD am_software0_isr ; 28: SOFTWARE0
DCD am_software1_isr ; 29: SOFTWARE1
DCD am_software2_isr ; 30: SOFTWARE2
DCD am_software3_isr ; 31: SOFTWARE3
__Vectors_End
__Vectors_Size EQU __Vectors_End - __Vectors
;******************************************************************************
;
; This is the code that gets called when the processor first starts execution
; following a reset event.
;
;******************************************************************************
Reset_Handler PROC
EXPORT Reset_Handler [WEAK]
IMPORT __main
; Enable the FPU.
MOVW R0, #0xED88
MOVT R0, #0xE000
LDR R1, [R0]
ORR R1, #0x00F00000
STR R1, [R0]
DSB
ISB
; Branch to main.
LDR R0, =__main
BX R0
ENDP
;******************************************************************************
;
; Weak Exception Handlers.
;
;******************************************************************************
NMI_Handler PROC
EXPORT NMI_Handler [WEAK]
B .
ENDP
HardFault_Handler\
PROC
EXPORT HardFault_Handler [WEAK]
B .
ENDP
MemoryManagement_Handler\
PROC
EXPORT MemoryManagement_Handler [WEAK]
B .
ENDP
BusFault_Handler\
PROC
EXPORT BusFault_Handler [WEAK]
B .
ENDP
UsageFault_Handler\
PROC
EXPORT UsageFault_Handler [WEAK]
B .
ENDP
SVC_Handler PROC
EXPORT SVC_Handler [WEAK]
B .
ENDP
DebugMon_Handler\
PROC
EXPORT DebugMon_Handler [WEAK]
B .
ENDP
PendSV_Handler PROC
EXPORT PendSV_Handler [WEAK]
B .
ENDP
SysTick_Handler PROC
EXPORT SysTick_Handler [WEAK]
B .
ENDP
am_default_isr PROC
EXPORT am_brownout_isr [WEAK]
EXPORT am_watchdog_isr [WEAK]
EXPORT am_clkgen_isr [WEAK]
EXPORT am_vcomp_isr [WEAK]
EXPORT am_ioslave_ios_isr [WEAK]
EXPORT am_ioslave_acc_isr [WEAK]
EXPORT am_iomaster0_isr [WEAK]
EXPORT am_iomaster1_isr [WEAK]
EXPORT am_iomaster2_isr [WEAK]
EXPORT am_iomaster3_isr [WEAK]
EXPORT am_iomaster4_isr [WEAK]
EXPORT am_iomaster5_isr [WEAK]
EXPORT am_gpio_isr [WEAK]
EXPORT am_ctimer_isr [WEAK]
EXPORT am_uart0_isr [WEAK]
EXPORT am_uart1_isr [WEAK]
EXPORT am_adc_isr [WEAK]
EXPORT am_pdm_isr [WEAK]
EXPORT am_stimer_isr [WEAK]
EXPORT am_stimer_cmpr0_isr [WEAK]
EXPORT am_stimer_cmpr1_isr [WEAK]
EXPORT am_stimer_cmpr2_isr [WEAK]
EXPORT am_stimer_cmpr3_isr [WEAK]
EXPORT am_stimer_cmpr4_isr [WEAK]
EXPORT am_stimer_cmpr5_isr [WEAK]
EXPORT am_stimer_cmpr6_isr [WEAK]
EXPORT am_stimer_cmpr7_isr [WEAK]
EXPORT am_flash_isr [WEAK]
EXPORT am_software0_isr [WEAK]
EXPORT am_software1_isr [WEAK]
EXPORT am_software2_isr [WEAK]
EXPORT am_software3_isr [WEAK]
am_brownout_isr
am_watchdog_isr
am_clkgen_isr
am_vcomp_isr
am_ioslave_ios_isr
am_ioslave_acc_isr
am_iomaster0_isr
am_iomaster1_isr
am_iomaster2_isr
am_iomaster3_isr
am_iomaster4_isr
am_iomaster5_isr
am_gpio_isr
am_ctimer_isr
am_uart0_isr
am_uart1_isr
am_adc_isr
am_pdm_isr
am_stimer_isr
am_stimer_cmpr0_isr
am_stimer_cmpr1_isr
am_stimer_cmpr2_isr
am_stimer_cmpr3_isr
am_stimer_cmpr4_isr
am_stimer_cmpr5_isr
am_stimer_cmpr6_isr
am_stimer_cmpr7_isr
am_flash_isr
am_software0_isr
am_software1_isr
am_software2_isr
am_software3_isr
; all device interrupts go here unless the weak label is over
; ridden in the linker hard spin so the debugger will know it
; was an unhandled interrupt request a come-from-buffer or
; instruction trace hardware would sure be nice if you get here
B .
ENDP
;******************************************************************************
;
; Align the end of the section.
;
;******************************************************************************
ALIGN
;******************************************************************************
;
; Initialization of the heap and stack.
;
;******************************************************************************
AREA |.text|, CODE, READONLY
;******************************************************************************
;
; 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 PROC
LDR R0, =HeapMem
LDR R1, =(StackMem + Stack)
LDR R2, =(HeapMem + Heap)
LDR R3, =StackMem
BX LR
ENDP
ENDIF
;******************************************************************************
;
; Align the end of the section.
;
;******************************************************************************
ALIGN
;******************************************************************************
;
; All Done
;
;******************************************************************************
END
|
