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//*****************************************************************************
//
// startup.c - Boot code for Stellaris.
//
// Copyright (c) 2005,2006 Luminary Micro, Inc. All rights reserved.
//
// Software License Agreement
//
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's Stellaris Family of microcontroller products.
//
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws. All rights are reserved. Any use in violation
// of the foregoing restrictions may subject the user to criminal sanctions
// under applicable laws, as well as to civil liability for the breach of the
// terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
//
//*****************************************************************************
//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************
void ResetISR(void);
static void NmiSR(void);
void FaultISR(void);
extern void xPortPendSVHandler(void);
extern void xPortSysTickHandler(void);
extern void vUART_ISR( void );
extern void vPortSVCHandler( void );
//*****************************************************************************
//
// The entry point for the application.
//
//*****************************************************************************
extern void entry(void);
//*****************************************************************************
//
// Reserve space for the system stack.
//
//*****************************************************************************
#ifndef STACK_SIZE
#define STACK_SIZE 51
#endif
static unsigned long pulMainStack[STACK_SIZE];
//*****************************************************************************
//
// The minimal vector table for a Cortex-M3. Note that the proper constructs
// must be placed on this to ensure that it ends up at physical address
// 0x0000.0000.
//
//*****************************************************************************
__attribute__ ((section("vectors")))
void (* const g_pfnVectors[])(void) =
{
(void (*)(void))((unsigned long)pulMainStack + sizeof(pulMainStack)),
ResetISR,
NmiSR,
FaultISR, //FAULT
0, // The MPU fault handler
0, // The bus fault handler
0, // The usage fault handler
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
vPortSVCHandler, // SVCall handler
0, // Debug monitor handler
0, // Reserved
xPortPendSVHandler, // The PendSV handler
xPortSysTickHandler, // The SysTick handler
0, // GPIO Port A
0, // GPIO Port B
0, // GPIO Port C
0, // GPIO Port D
0, // GPIO Port E
vUART_ISR // UART0 Rx and Tx
};
//*****************************************************************************
//
// The following are constructs created by the linker, indicating where the
// the "data" and "bss" segments reside in memory. The initializers for the
// for the "data" segment resides immediately following the "text" segment.
//
//*****************************************************************************
extern unsigned long _etext;
extern unsigned long _data;
extern unsigned long _edata;
extern unsigned long _bss;
extern unsigned long _ebss;
//*****************************************************************************
//
// This is the code that gets called when the processor first starts execution
// following a reset event. Only the absolutely necessary set is performed,
// after which the application supplied entry() routine is called. Any fancy
// actions (such as making decisions based on the reset cause register, and
// resetting the bits in that register) are left solely in the hands of the
// application.
//
//*****************************************************************************
void
ResetISR(void)
{
unsigned long *pulSrc, *pulDest;
//
// Copy the data segment initializers from flash to SRAM.
//
pulSrc = &_etext;
for(pulDest = &_data; pulDest < &_edata; )
{
*pulDest++ = *pulSrc++;
}
//
// Zero fill the bss segment.
//
for(pulDest = &_bss; pulDest < &_ebss; )
{
*pulDest++ = 0;
}
//
// Call the application's entry point.
//
Main();
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI. This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
static void
NmiSR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt. This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
void
FaultISR(void)
{
//
// Enter an infinite loop.
//
while(1)
{
}
}
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