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/* File: startup_MK20D5.s
* Purpose: startup file for Cortex-M4 devices. Should use with
* GCC for ARM Embedded Processors
* Version: V1.3
* Date: 08 Feb 2012
*
* Copyright (c) 2012, ARM Limited
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of the ARM Limited 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 ARM LIMITED 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.
*/
.syntax unified
.arch armv7-m
.section .stack
.align 3
#ifdef __STACK_SIZE
.equ Stack_Size, __STACK_SIZE
#else
.equ Stack_Size, 0x400
#endif
.globl __StackTop
.globl __StackLimit
__StackLimit:
.space Stack_Size
.size __StackLimit, . - __StackLimit
__StackTop:
.size __StackTop, . - __StackTop
.section .heap
.align 3
#ifdef __HEAP_SIZE
.equ Heap_Size, __HEAP_SIZE
#else
.equ Heap_Size, 0xC00
#endif
.globl __HeapBase
.globl __HeapLimit
__HeapBase:
.if Heap_Size
.space Heap_Size
.endif
.size __HeapBase, . - __HeapBase
__HeapLimit:
.size __HeapLimit, . - __HeapLimit
.section .isr_vector
.align 2
.globl __isr_vector
__isr_vector:
.long __StackTop /* Top of Stack */
.long Reset_Handler /* Reset Handler */
.long NMI_Handler /* NMI Handler */
.long HardFault_Handler /* Hard Fault Handler */
.long MemManage_Handler /* MPU Fault Handler */
.long BusFault_Handler /* Bus Fault Handler */
.long UsageFault_Handler /* Usage Fault Handler */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long 0 /* Reserved */
.long SVC_Handler /* SVCall Handler */
.long DebugMon_Handler /* Debug Monitor Handler */
.long 0 /* Reserved */
.long PendSV_Handler /* PendSV Handler */
.long SysTick_Handler /* SysTick Handler */
/* External interrupts */
.long DMA0_IRQHandler /* 0: Watchdog Timer */
.long DMA1_IRQHandler /* 1: Real Time Clock */
.long DMA2_IRQHandler /* 2: Timer0 / Timer1 */
.long DMA3_IRQHandler /* 3: Timer2 / Timer3 */
.long DMA_Error_IRQHandler /* 4: MCIa */
.long 0 /* 5: MCIb */
.long FTFL_IRQHandler /* 6: UART0 - DUT FPGA */
.long Read_Collision_IRQHandler /* 7: UART1 - DUT FPGA */
.long LVD_LVW_IRQHandler /* 8: UART2 - DUT FPGA */
.long LLW_IRQHandler /* 9: UART4 - not connected */
.long Watchdog_IRQHandler /* 10: AACI / AC97 */
.long I2C0_IRQHandler /* 11: CLCD Combined Interrupt */
.long SPI0_IRQHandler /* 12: Ethernet */
.long I2S0_Tx_IRQHandler /* 13: USB Device */
.long I2S0_Rx_IRQHandler /* 14: USB Host Controller */
.long UART0_LON_IRQHandler /* 15: Character LCD */
.long UART0_RX_TX_IRQHandler /* 16: Flexray */
.long UART0_ERR_IRQHandler /* 17: CAN */
.long UART1_RX_TX_IRQHandler /* 18: LIN */
.long UART1_ERR_IRQHandler /* 19: I2C ADC/DAC */
.long UART2_RX_TX_IRQHandler /* 20: Reserved */
.long UART2_ERR_IRQHandler /* 21: Reserved */
.long ADC0_IRQHandler /* 22: Reserved */
.long CMP0_IRQHandler /* 23: Reserved */
.long CMP1_IRQHandler /* 24: Reserved */
.long FTM0_IRQHandler /* 25: Reserved */
.long FTM1_IRQHandler /* 26: Reserved */
.long CMT_IRQHandler /* 27: Reserved */
.long RTC_IRQHandler /* 28: Reserved - CPU FPGA CLCD */
.long RTC_Seconds_IRQHandler /* 29: Reserved - CPU FPGA */
.long PIT0_IRQHandler /* 30: UART3 - CPU FPGA */
.long PIT1_IRQHandler /* 31: SPI Touchscreen - CPU FPGA */
.long PIT2_IRQHandler
.long PIT3_IRQHandler
.long PDB0_IRQHandler
.long USB0_IRQHandler
.long USBDCD_IRQHandler
.long TSI0_IRQHandler
.long MCG_IRQHandler
.long LPTimer_IRQHandler
.long PORTA_IRQHandler
.long PORTB_IRQHandler
.long PORTC_IRQHandler
.long PORTD_IRQHandler
.long PORTE_IRQHandler
.long SWI_IRQHandler
.size __isr_vector, . - __isr_vector
.section .text.Reset_Handler
.thumb
.thumb_func
.align 2
.globl Reset_Handler
.type Reset_Handler, %function
Reset_Handler:
/* Loop to copy data from read only memory to RAM. The ranges
* of copy from/to are specified by following symbols evaluated in
* linker script.
* __etext: End of code section, i.e., begin of data sections to copy from.
* __data_start__/__data_end__: RAM address range that data should be
* copied to. Both must be aligned to 4 bytes boundary. */
ldr r0, =SystemInit
blx r0
ldr r1, =__etext
ldr r2, =__data_start__
ldr r3, =__data_end__
.Lflash_to_ram_loop:
cmp r2, r3
ittt lt
ldrlt r0, [r1], #4
strlt r0, [r2], #4
blt .Lflash_to_ram_loop
.Lflash_to_ram_loop_end:
ldr r0, =_start
bx r0
.pool
.size Reset_Handler, . - Reset_Handler
.text
/* Macro to define default handlers. Default handler
* will be weak symbol and just dead loops. They can be
* overwritten by other handlers */
.macro def_default_handler handler_name
.align 1
.thumb_func
.weak \handler_name
.type \handler_name, %function
\handler_name :
b .
.size \handler_name, . - \handler_name
.endm
def_default_handler NMI_Handler
def_default_handler HardFault_Handler
def_default_handler MemManage_Handler
def_default_handler BusFault_Handler
def_default_handler UsageFault_Handler
def_default_handler SVC_Handler
def_default_handler DebugMon_Handler
def_default_handler PendSV_Handler
def_default_handler SysTick_Handler
def_default_handler Default_Handler
.macro def_irq_default_handler handler_name
.weak \handler_name
.set \handler_name, Default_Handler
.endm
def_irq_default_handler DMA0_IRQHandler
def_irq_default_handler DMA1_IRQHandler
def_irq_default_handler DMA2_IRQHandler
def_irq_default_handler DMA3_IRQHandler
def_irq_default_handler DMA_Error_IRQHandler
def_irq_default_handler FTFL_IRQHandler
def_irq_default_handler Read_Collision_IRQHandler
def_irq_default_handler LVD_LVW_IRQHandler
def_irq_default_handler LLW_IRQHandler
def_irq_default_handler Watchdog_IRQHandler
def_irq_default_handler I2C0_IRQHandler
def_irq_default_handler SPI0_IRQHandler
def_irq_default_handler I2S0_Tx_IRQHandler
def_irq_default_handler I2S0_Rx_IRQHandler
def_irq_default_handler UART0_LON_IRQHandler
def_irq_default_handler UART0_RX_TX_IRQHandler
def_irq_default_handler UART0_ERR_IRQHandler
def_irq_default_handler UART1_RX_TX_IRQHandler
def_irq_default_handler UART1_ERR_IRQHandler
def_irq_default_handler UART2_RX_TX_IRQHandler
def_irq_default_handler UART2_ERR_IRQHandler
def_irq_default_handler ADC0_IRQHandler
def_irq_default_handler CMP0_IRQHandler
def_irq_default_handler CMP1_IRQHandler
def_irq_default_handler FTM0_IRQHandler
def_irq_default_handler FTM1_IRQHandler
def_irq_default_handler CMT_IRQHandler
def_irq_default_handler RTC_IRQHandler
def_irq_default_handler RTC_Seconds_IRQHandler
def_irq_default_handler PIT0_IRQHandler
def_irq_default_handler PIT1_IRQHandler
def_irq_default_handler PIT2_IRQHandler
def_irq_default_handler PIT3_IRQHandler
def_irq_default_handler PDB0_IRQHandler
def_irq_default_handler USB0_IRQHandler
def_irq_default_handler USBDCD_IRQHandler
def_irq_default_handler TSI0_IRQHandler
def_irq_default_handler MCG_IRQHandler
def_irq_default_handler LPTimer_IRQHandler
def_irq_default_handler PORTA_IRQHandler
def_irq_default_handler PORTB_IRQHandler
def_irq_default_handler PORTC_IRQHandler
def_irq_default_handler PORTD_IRQHandler
def_irq_default_handler PORTE_IRQHandler
def_irq_default_handler SWI_IRQHandler
def_irq_default_handler DEF_IRQHandler
/* Flash protection region, placed at 0x400 */
.text
.thumb
.align 2
.section .kinetis_flash_config_field,"a",%progbits
kinetis_flash_config:
.long 0xffffffff
.long 0xffffffff
.long 0xffffffff
.long 0xfffffffe
.end
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