mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
240 lines
10 KiB
C
240 lines
10 KiB
C
/*
|
|
* Copyright (C) 2014 Freie Universität Berlin
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU Lesser
|
|
* General Public License v2.1. See the file LICENSE in the top level
|
|
* directory for more details.
|
|
*/
|
|
|
|
/**
|
|
* @ingroup cpu_sam3x8e
|
|
* @{
|
|
*
|
|
* @file startup.c
|
|
* @brief Startup code and interrupt vector definition
|
|
*
|
|
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
|
|
*
|
|
* @}
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
|
|
#include "board.h"
|
|
|
|
/**
|
|
* memory markers as defined in the linker script
|
|
*/
|
|
extern uint32_t _sfixed;
|
|
extern uint32_t _efixed;
|
|
extern uint32_t _etext;
|
|
extern uint32_t _srelocate;
|
|
extern uint32_t _erelocate;
|
|
extern uint32_t _szero;
|
|
extern uint32_t _ezero;
|
|
extern uint32_t _sstack;
|
|
extern uint32_t _estack;
|
|
|
|
/**
|
|
* @brief functions for initializing the board, std-lib and kernel
|
|
*/
|
|
extern void board_init(void);
|
|
extern void kernel_init(void);
|
|
extern void __libc_init_array(void);
|
|
|
|
/**
|
|
* @brief This function is the entry point after a system reset
|
|
*
|
|
* After a system reset, the following steps are necessary and carried out:
|
|
* 1. load data section from flash to ram
|
|
* 2. overwrite uninitialized data section (BSS) with zeros
|
|
* 3. initialize the newlib
|
|
* 4. initialize the board (sync clock, setup std-IO)
|
|
* 5. initialize and start RIOTs kernel
|
|
*/
|
|
void reset_handler(void)
|
|
{
|
|
uint32_t *dst;
|
|
uint32_t *src = &_etext;
|
|
|
|
/* load data section from flash to ram */
|
|
for (dst = &_srelocate; dst < &_erelocate; ) {
|
|
*(dst++) = *(src++);
|
|
}
|
|
|
|
/* default bss section to zero */
|
|
for (dst = &_szero; dst < &_ezero; ) {
|
|
*(dst++) = 0;
|
|
}
|
|
|
|
/* initialize the board and startup the kernel */
|
|
board_init();
|
|
/* initialize std-c library (this should be done after board_init) */
|
|
__libc_init_array();
|
|
/* startup the kernel */
|
|
kernel_init();
|
|
}
|
|
|
|
/**
|
|
* @brief Default handler is called in case no interrupt handler was defined
|
|
*/
|
|
void dummy_handler(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
void isr_nmi(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
void isr_mem_manage(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
void isr_debug_mon(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
void isr_hard_fault(void)
|
|
{
|
|
puts("\n### HARD FAULT ###\n");
|
|
while (1) {
|
|
LED_RED_TOGGLE;
|
|
for (int i = 0; i < 2000000; i++) {
|
|
asm ("nop");
|
|
}
|
|
}
|
|
}
|
|
|
|
void isr_bus_fault(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
void isr_usage_fault(void)
|
|
{
|
|
while (1) {asm ("nop");}
|
|
}
|
|
|
|
/* Cortex-M specific interrupt vectors */
|
|
void isr_svc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_pendsv(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_systick(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
|
|
/* SAM3X8E specific interrupt vector */
|
|
void isr_supc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_rstc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_rtc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_rtt(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_wdt(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_pmc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_efc0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_efc1(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_uart(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_smc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_pioa(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_piob(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_pioc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_piod(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_usart0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_usart1(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_usart2(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_usart3(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_hsmci(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_twi0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_twi1(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_spi0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_ssc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc1(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc2(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc3(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc4(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc5(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc6(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc7(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_tc8(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_pwm(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_adc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_dacc(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_dmac(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_uotghs(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_trng(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_emac(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_can0(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
void isr_can1(void) __attribute__ ((weak, alias("dummy_handler")));
|
|
|
|
|
|
/* interrupt vector table */
|
|
__attribute__ ((section(".vectors")))
|
|
const void *interrupt_vector[] = {
|
|
/* Stack pointer */
|
|
(void*) (&_estack), /* pointer to the top of the empty stack */
|
|
/* Cortex-M handlers */
|
|
(void*) reset_handler, /* entry point of the program */
|
|
(void*) isr_nmi, /* non maskable interrupt handler */
|
|
(void*) isr_hard_fault, /* if you end up here its not good */
|
|
(void*) isr_mem_manage, /* memory controller interrupt */
|
|
(void*) isr_bus_fault, /* also not good to end up here */
|
|
(void*) isr_usage_fault, /* autsch */
|
|
(void*) (0UL), /* Reserved */
|
|
(void*) (0UL), /* Reserved */
|
|
(void*) (0UL), /* Reserved */
|
|
(void*) (0UL), /* Reserved */
|
|
(void*) isr_svc, /* system call interrupt */
|
|
(void*) isr_debug_mon, /* debug interrupt */
|
|
(void*) (0UL), /* Reserved */
|
|
(void*) isr_pendsv, /* pendSV interrupt, used for task switching in RIOT */
|
|
(void*) isr_systick, /* SysTick interrupt, not used in RIOT */
|
|
/* SAM3X8E specific peripheral handlers */
|
|
(void*) isr_supc, /* 0 supply controller */
|
|
(void*) isr_rstc, /* 1 reset controller */
|
|
(void*) isr_rtc, /* 2 real time clock */
|
|
(void*) isr_rtt, /* 3 real timer timer */
|
|
(void*) isr_wdt, /* 4 watchdog timer */
|
|
(void*) isr_pmc, /* 5 power management controller */
|
|
(void*) isr_efc0, /* 6 enhanced flash controller 0 */
|
|
(void*) isr_efc1, /* 7 enhanced flash controller 1 */
|
|
(void*) isr_uart, /* 8 universal asynchronous receiver transceiver */
|
|
(void*) isr_smc, /* 9 static memory controller */
|
|
(void*) (0UL),
|
|
(void*) isr_pioa, /* 11 GPIO port A */
|
|
(void*) isr_piob, /* 12 GPIO port B */
|
|
(void*) isr_pioc, /* 13 GPIO port C */
|
|
(void*) isr_piod, /* 14 GPIO port D */
|
|
(void*) (0UL),
|
|
(void*) (0UL),
|
|
(void*) isr_usart0, /* 17 USART0 */
|
|
(void*) isr_usart1, /* 18 USART1 */
|
|
(void*) isr_usart2, /* 19 USART2 */
|
|
(void*) isr_usart3, /* 20 USART3 */
|
|
(void*) isr_hsmci, /* 21 multimedia card interface */
|
|
(void*) isr_twi0, /* 22 two-wire interface 0 */
|
|
(void*) isr_twi1, /* 23 two-wire interface 1 */
|
|
(void*) isr_spi0, /* 24 serial peripheral interface */
|
|
(void*) (0UL),
|
|
(void*) isr_ssc, /* 26 synchronous serial controller */
|
|
(void*) isr_tc0, /* 27 timer counter 0 */
|
|
(void*) isr_tc1, /* 28 timer counter 1 */
|
|
(void*) isr_tc2, /* 29 timer counter 2 */
|
|
(void*) isr_tc3, /* 30 timer counter 3 */
|
|
(void*) isr_tc4, /* 31 timer counter 4 */
|
|
(void*) isr_tc5, /* 32 timer counter 5 */
|
|
(void*) isr_tc6, /* 33 timer counter 6 */
|
|
(void*) isr_tc7, /* 34 timer counter 7 */
|
|
(void*) isr_tc8, /* 35 timer counter 8 */
|
|
(void*) isr_pwm, /* 36 pulse width modulation controller */
|
|
(void*) isr_adc, /* 37 ADC controller */
|
|
(void*) isr_dacc, /* 38 DAC controller */
|
|
(void*) isr_dmac, /* 39 DMA controller */
|
|
(void*) isr_uotghs, /* 40 USB OTG high speed */
|
|
(void*) isr_trng, /* 41 true random number generator */
|
|
(void*) isr_emac, /* 42 Ethernet MAC*/
|
|
(void*) isr_can0, /* 43 CAN controller 0*/
|
|
(void*) isr_can1, /* 44 CAN controller 1*/
|
|
};
|