2013-01-08 22:40:58 +08:00
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; <<< Use Configuration Wizard in Context Menu >>>
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;******************************************************************************
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;
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; Startup.s - Startup code for Stellaris.
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;
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; Copyright (c) 2006-2008 Luminary Micro, Inc. All rights reserved.
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;
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; Software License Agreement
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;
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; Luminary Micro, Inc. (LMI) is supplying this software for use solely and
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; exclusively on LMI's microcontroller products.
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;
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; The software is owned by LMI and/or its suppliers, and is protected under
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; applicable copyright laws. All rights are reserved. You may not combine
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; this software with "viral" open-source software in order to form a larger
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; program. Any use in violation of the foregoing restrictions may subject
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; the user to criminal sanctions under applicable laws, as well as to civil
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; liability for the breach of the terms and conditions of this license.
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;
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; THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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; OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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; MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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; LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
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; CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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;
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; This is part of revision 2523 of the Stellaris Peripheral Driver Library.
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;
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;******************************************************************************
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;******************************************************************************
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;
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; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;
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;******************************************************************************
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Stack EQU 0x00000100
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;******************************************************************************
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;
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; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
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;
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;******************************************************************************
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Heap EQU 0x00000000
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;******************************************************************************
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;
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; Allocate space for the stack.
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;
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;******************************************************************************
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AREA STACK, NOINIT, READWRITE, ALIGN=3
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StackMem
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SPACE Stack
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__initial_sp
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;******************************************************************************
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;
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; Allocate space for the heap.
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;
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;******************************************************************************
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AREA HEAP, NOINIT, READWRITE, ALIGN=3
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__heap_base
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HeapMem
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SPACE Heap
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__heap_limit
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IMPORT PendSV_Handler
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IMPORT rt_hw_timer_handler
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IMPORT rt_hw_uart_isr_1
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IMPORT rt_hw_eth_handler
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IMPORT HardFault_Handler
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;******************************************************************************
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;
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; Indicate that the code in this file preserves 8-byte alignment of the stack.
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;
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;******************************************************************************
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PRESERVE8
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;******************************************************************************
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;
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; Place code into the reset code section.
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;
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;******************************************************************************
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AREA RESET, CODE, READONLY
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THUMB
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;******************************************************************************
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;
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; The vector table.
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;
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;******************************************************************************
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EXPORT __Vectors
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__Vectors
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DCD StackMem + Stack ; Top of Stack
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DCD Reset_Handler ; Reset Handler
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DCD NmiSR ; NMI Handler
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DCD HardFault_Handler ; Hard Fault Handler
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DCD IntDefaultHandler ; MPU Fault Handler
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DCD IntDefaultHandler ; Bus Fault Handler
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DCD IntDefaultHandler ; Usage Fault Handler
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DCD 0 ; Reserved
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DCD 0 ; Reserved
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DCD 0 ; Reserved
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DCD 0 ; Reserved
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DCD IntDefaultHandler ; SVCall Handler
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DCD IntDefaultHandler ; Debug Monitor Handler
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DCD 0 ; Reserved
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DCD PendSV_Handler ; PendSV Handler
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DCD rt_hw_timer_handler ; SysTick Handler
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DCD IntDefaultHandler ; GPIO Port A
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DCD IntDefaultHandler ; GPIO Port B
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DCD IntDefaultHandler ; GPIO Port C
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DCD IntDefaultHandler ; GPIO Port D
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DCD IntDefaultHandler ; GPIO Port E
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DCD rt_hw_uart_isr_1 ; UART0
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DCD IntDefaultHandler ; UART1
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DCD IntDefaultHandler ; SSI
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DCD IntDefaultHandler ; I2C
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DCD IntDefaultHandler ; PWM Fault
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DCD IntDefaultHandler ; PWM Generator 0
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DCD IntDefaultHandler ; PWM Generator 1
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DCD IntDefaultHandler ; PWM Generator 2
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DCD IntDefaultHandler ; Quadrature Encoder
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DCD IntDefaultHandler ; ADC Sequence 0
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DCD IntDefaultHandler ; ADC Sequence 1
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DCD IntDefaultHandler ; ADC Sequence 2
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DCD IntDefaultHandler ; ADC Sequence 3
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DCD IntDefaultHandler ; Watchdog
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DCD IntDefaultHandler ; Timer 0A
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DCD IntDefaultHandler ; Timer 0B
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DCD IntDefaultHandler ; Timer 1A
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DCD IntDefaultHandler ; Timer 1B
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DCD IntDefaultHandler ; Timer 2A
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DCD IntDefaultHandler ; Timer 2B
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DCD IntDefaultHandler ; Comp 0
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DCD IntDefaultHandler ; Comp 1
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DCD IntDefaultHandler ; Comp 2
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DCD IntDefaultHandler ; System Control
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DCD 0x881 ; Flash Control
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DCD IntDefaultHandler ; GPIO Port F
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DCD IntDefaultHandler ; GPIO Port G
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DCD IntDefaultHandler ; GPIO Port H
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DCD IntDefaultHandler ; UART2 Rx and Tx
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DCD IntDefaultHandler ; SSI1 Rx and Tx
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DCD IntDefaultHandler ; Timer 3 subtimer A
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DCD IntDefaultHandler ; Timer 3 subtimer B
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DCD IntDefaultHandler ; I2C1 Master and Slave
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DCD IntDefaultHandler ; Quadrature Encoder 1
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DCD IntDefaultHandler ; CAN0
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DCD IntDefaultHandler ; CAN1
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DCD IntDefaultHandler ; CAN2
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DCD rt_hw_eth_handler ; Ethernet
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DCD IntDefaultHandler ; Hibernate
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DCD IntDefaultHandler ; USB0
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DCD IntDefaultHandler ; PWM Generator 3
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DCD IntDefaultHandler ; uDMA Software Transfer
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DCD IntDefaultHandler ; uDMA Error
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;******************************************************************************
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;
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; This is the code that gets called when the processor first starts execution
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; following a reset event.
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;
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;******************************************************************************
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EXPORT Reset_Handler
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Reset_Handler
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;
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; Call the C library enty point that handles startup. This will copy
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; the .data section initializers from flash to SRAM and zero fill the
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; .bss section.
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;
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IMPORT __main
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B __main
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;******************************************************************************
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;
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; This is the code that gets called when the processor receives a NMI. This
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; simply enters an infinite loop, preserving the system state for examination
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; by a debugger.
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;
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;******************************************************************************
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NmiSR
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B NmiSR
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;******************************************************************************
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;
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; This is the code that gets called when the processor receives a fault
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; interrupt. This simply enters an infinite loop, preserving the system state
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; for examination by a debugger.
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;
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;******************************************************************************
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FaultISR
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B FaultISR
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;******************************************************************************
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;
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; This is the code that gets called when the processor receives an unexpected
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; interrupt. This simply enters an infinite loop, preserving the system state
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; for examination by a debugger.
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;
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;******************************************************************************
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IntDefaultHandler
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B IntDefaultHandler
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;******************************************************************************
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;
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; Make sure the end of this section is aligned.
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;
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;******************************************************************************
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ALIGN
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;******************************************************************************
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;
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; Some code in the normal code section for initializing the heap and stack.
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;
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;******************************************************************************
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AREA |.text|, CODE, READONLY
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;******************************************************************************
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;
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; The function expected of the C library startup code for defining the stack
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; and heap memory locations. For the C library version of the startup code,
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; provide this function so that the C library initialization code can find out
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; the location of the stack and heap.
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;
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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, =HeapMem
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LDR R1, =(StackMem + Stack)
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LDR R2, =(HeapMem + Heap)
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LDR R3, =StackMem
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BX LR
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ENDIF
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;******************************************************************************
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;
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; Make sure the end of this section is aligned.
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;
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;******************************************************************************
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ALIGN
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;******************************************************************************
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;
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; Tell the assembler that we're done.
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;
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;******************************************************************************
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END
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