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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* 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 disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "board.h"
#include "exceptions.h"
#include "board_lowlevel.h"
#include <core_cm3.h>
//------------------------------------------------------------------------------
// External Variables
//------------------------------------------------------------------------------
// Stack top
extern unsigned int _estack;
// Vector start address
extern unsigned int _vect_start;
// Initialize segments
extern unsigned int _sfixed;
extern unsigned int _sfixed;
extern unsigned int _efixed;
extern unsigned int _srelocate;
extern unsigned int _erelocate;
extern unsigned int _szero;
extern unsigned int _ezero;
#if defined(psram)
extern unsigned int _svectorrelocate;
extern unsigned int _evectorrelocate;
#endif
//------------------------------------------------------------------------------
// ProtoTypes
//------------------------------------------------------------------------------
extern int main(void);
void ResetException(void);
//------------------------------------------------------------------------------
// Exception Table
//------------------------------------------------------------------------------
__attribute__((section(".vectors")))
IntFunc exception_table[] = {
// Configure Initial Stack Pointer, using linker-generated symbols
(IntFunc)&_estack,
ResetException,
NMI_Handler,
HardFault_Handler,
MemManage_Handler,
BusFault_Handler,
UsageFault_Handler,
0, 0, 0, 0, // Reserved
SVC_Handler,
DebugMon_Handler,
0, // Reserved
PendSV_Handler,
SysTick_Handler,
// Configurable interrupts
SUPC_IrqHandler, // 0 SUPPLY CONTROLLER
RSTC_IrqHandler, // 1 RESET CONTROLLER
RTC_IrqHandler, // 2 REAL TIME CLOCK
RTT_IrqHandler, // 3 REAL TIME TIMER
WDT_IrqHandler, // 4 WATCHDOG TIMER
PMC_IrqHandler, // 5 PMC
EFC0_IrqHandler, // 6 EFC0
EFC1_IrqHandler, // 7 EFC1
DBGU_IrqHandler, // 8 DBGU
HSMC4_IrqHandler, // 9 HSMC4
PIOA_IrqHandler, // 10 Parallel IO Controller A
PIOB_IrqHandler, // 11 Parallel IO Controller B
PIOC_IrqHandler, // 12 Parallel IO Controller C
USART0_IrqHandler, // 13 USART 0
USART1_IrqHandler, // 14 USART 1
USART2_IrqHandler, // 15 USART 2
USART3_IrqHandler, // 16 USART 3
MCI0_IrqHandler, // 17 Multimedia Card Interface
TWI0_IrqHandler, // 18 TWI 0
TWI1_IrqHandler, // 19 TWI 1
SPI0_IrqHandler, // 20 Serial Peripheral Interface
SSC0_IrqHandler, // 21 Serial Synchronous Controller 0
TC0_IrqHandler, // 22 Timer Counter 0
TC1_IrqHandler, // 23 Timer Counter 1
TC2_IrqHandler, // 24 Timer Counter 2
PWM_IrqHandler, // 25 Pulse Width Modulation Controller
ADCC0_IrqHandler, // 26 ADC controller0
ADCC1_IrqHandler, // 27 ADC controller1
HDMA_IrqHandler, // 28 HDMA
USBD_IrqHandler, // 29 USB Device High Speed UDP_HS
IrqHandlerNotUsed // 30 not used
};
#if defined(BOARD_USB_DFU) && !defined(dfu)
static void BootIntoApp(void)
{
unsigned int *pSrc;
void (*appReset)(void);
pSrc = (unsigned int *) ((unsigned char *)AT91C_IFLASH0 + BOARD_DFU_BOOT_SIZE);
AT91C_BASE_NVIC->NVIC_VTOFFR = ((unsigned int)(pSrc)) | (0x0 << 7);
appReset = pSrc[1];
appReset();
}
#endif
//------------------------------------------------------------------------------
/// This is the code that gets called on processor reset. To initialize the
/// device. And call the main() routine.
//------------------------------------------------------------------------------
void ResetException(void)
{
unsigned int *pSrc, *pDest;
LowLevelInit();
#if defined(BOARD_USB_DFU) && !defined(dfu)
#ifdef BOARD_DFU_BTN_PIOA
/* There is a PIO button that can be used to enter DFU */
AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_PIOA;
AT91C_BASE_PIOA->PIO_PPUER = (1 << BOARD_DFU_BTN_PIOA);
AT91C_BASE_PIOA->PIO_ODR = (1 << BOARD_DFU_BTN_PIOA);
AT91C_BASE_PIOA->PIO_PER = (1 << BOARD_DFU_BTN_PIOA);
if (AT91C_BASE_PIOA->PIO_PDSR & (1 << BOARD_DFU_BTN_PIOA) &&
#else /* BOARD_DFU_BTN_PIOA */
if (1 &&
#endif /* BOARD_DFU_BTN_PIOA */
(unsigned long *)AT91C_IRAM != 0xDFDFDFDF) {
BootIntoApp();
}
#endif
#if defined(psram)
pDest = &_vect_start;
pSrc = &_svectorrelocate;
for(; pSrc < &_evectorrelocate;) {
*pDest++ = *pSrc++;
}
#endif
// Initialize data
pSrc = &_efixed;
pDest = &_srelocate;
if (pSrc != pDest) {
for(; pDest < &_erelocate;) {
*pDest++ = *pSrc++;
}
}
// Zero fill bss
for(pDest = &_szero; pDest < &_ezero;) {
*pDest++ = 0;
}
#if defined(psram)
pSrc = (unsigned int *)&_vect_start;
#else
pSrc = (unsigned int *)&_sfixed;
#endif
AT91C_BASE_NVIC->NVIC_VTOFFR = ((unsigned int)(pSrc)) | (0x0 << 7);
/* APP should have disabled interrupts during the transition */
__enable_irq();
main();
}
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