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RIOT/cpu/stm32f4/startup.c

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/*
* 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_stm32f4
* @{
*
* @file
* @brief Startup code and interrupt vector definition
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <stdint.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);
/**
* Required by g++ cross compiler
*/
void *__dso_handle;
/**
* @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)
{
while (1) {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")));
/* STM32F4 specific interrupt vector */
void isr_wwdg(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_pvd(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tamp_stamp(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_rtc_wkup(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_flash(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_rcc(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti0(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti2(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti3(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti4(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream0(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream2(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream3(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream4(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream5(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream6(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_adc(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can1_tx(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can1_rx0(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can1_rx1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can1_sce(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_exti9_5(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim1_brk_tim9(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim1_up_tim10(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim1_trg_com_tim11(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim1_cc(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim2(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim3(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim4(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c1_ev(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c1_er(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c2_ev(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c2_er(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_spi1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_spi2(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_exti15_10(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_rtc_alarm(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_fs_wkup(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim8_brk_tim12(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim8_up_tim13(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim8_trg_com_tim14(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim8_cc(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma1_stream7(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_fsmc(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_sdio(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim5(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_spi3(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_uart4(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_uart5(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim6_dac(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_tim7(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream0(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream2(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream3(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream4(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_eth(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_eth_wkup(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can2_tx(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can2_rx0(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can2_rx1(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_can2_sce(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_fs(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream5(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream6(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dma2_stream7(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_usart6(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c3_ev(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_i2c3_er(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_hs_ep1_out(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_hs_ep1_in(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_hs_wkup(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_otg_hs(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_dcmi(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_cryp(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_hash_rng(void) __attribute__ ((weak, alias("dummy_handler")));
void isr_fpu(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-M4 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 */
/* STM specific peripheral handlers */
(void*) isr_wwdg, /* Window WatchDog */
(void*) isr_pvd, /* PVD through EXTI Line detection */
(void*) isr_tamp_stamp, /* Tamper and TimeStamps through the EXTI line */
(void*) isr_rtc_wkup, /* RTC Wakeup through the EXTI line */
(void*) isr_flash, /* FLASH */
(void*) isr_rcc, /* RCC */
(void*) isr_exti0, /* EXTI Line0 */
(void*) isr_exti1, /* EXTI Line1 */
(void*) isr_exti2, /* EXTI Line2 */
(void*) isr_exti3, /* EXTI Line3 */
(void*) isr_exti4, /* EXTI Line4 */
(void*) isr_dma1_stream0, /* DMA1 Stream 0 */
(void*) isr_dma1_stream1, /* DMA1 Stream 1 */
(void*) isr_dma1_stream2, /* DMA1 Stream 2 */
(void*) isr_dma1_stream3, /* DMA1 Stream 3 */
(void*) isr_dma1_stream4, /* DMA1 Stream 4 */
(void*) isr_dma1_stream5, /* DMA1 Stream 5 */
(void*) isr_dma1_stream6, /* DMA1 Stream 6 */
(void*) isr_adc, /* ADC1, ADC2 and ADC3s */
(void*) isr_can1_tx, /* CAN1 TX */
(void*) isr_can1_rx0, /* CAN1 RX0 */
(void*) isr_can1_rx1, /* CAN1 RX1 */
(void*) isr_can1_sce, /* CAN1 SCE */
(void*) isr_exti9_5, /* External Line[9:5]s */
(void*) isr_tim1_brk_tim9, /* TIM1 Break and TIM9 */
(void*) isr_tim1_up_tim10, /* TIM1 Update and TIM10 */
(void*) isr_tim1_trg_com_tim11, /* TIM1 Trigger and Commutation and TIM11 */
(void*) isr_tim1_cc, /* TIM1 Capture Compare */
(void*) isr_tim2, /* TIM2 */
(void*) isr_tim3, /* TIM3 */
(void*) isr_tim4, /* TIM4 */
(void*) isr_i2c1_ev, /* I2C1 Event */
(void*) isr_i2c1_er, /* I2C1 Error */
(void*) isr_i2c2_ev, /* I2C2 Event */
(void*) isr_i2c2_er, /* I2C2 Error */
(void*) isr_spi1, /* SPI1 */
(void*) isr_spi2, /* SPI2 */
(void*) isr_usart1, /* USART1 */
(void*) isr_usart2, /* USART2 */
(void*) isr_usart3, /* USART3 */
(void*) isr_exti15_10, /* External Line[15:10]s */
(void*) isr_rtc_alarm, /* RTC Alarm (A and B) through EXTI Line */
(void*) isr_otg_fs_wkup, /* USB OTG FS Wakeup through EXTI line */
(void*) isr_tim8_brk_tim12, /* TIM8 Break and TIM12 */
(void*) isr_tim8_up_tim13, /* TIM8 Update and TIM13 */
(void*) isr_tim8_trg_com_tim14, /* TIM8 Trigger and Commutation and TIM14 */
(void*) isr_tim8_cc, /* TIM8 Capture Compare */
(void*) isr_dma1_stream7, /* DMA1 Stream7 */
(void*) isr_fsmc, /* FSMC */
(void*) isr_sdio, /* SDIO */
(void*) isr_tim5, /* TIM5 */
(void*) isr_spi3, /* SPI3 */
(void*) isr_uart4, /* UART4 */
(void*) isr_uart5, /* UART5 */
(void*) isr_tim6_dac, /* TIM6 and DAC1&2 underrun errors */
(void*) isr_tim7, /* TIM7 */
(void*) isr_dma2_stream0, /* DMA2 Stream 0 */
(void*) isr_dma2_stream1, /* DMA2 Stream 1 */
(void*) isr_dma2_stream2, /* DMA2 Stream 2 */
(void*) isr_dma2_stream3, /* DMA2 Stream 3 */
(void*) isr_dma2_stream4, /* DMA2 Stream 4 */
(void*) isr_eth, /* Ethernet */
(void*) isr_eth_wkup, /* Ethernet Wakeup through EXTI line */
(void*) isr_can2_tx, /* CAN2 TX */
(void*) isr_can2_rx0, /* CAN2 RX0 */
(void*) isr_can2_rx1, /* CAN2 RX1 */
(void*) isr_can2_sce, /* CAN2 SCE */
(void*) isr_otg_fs, /* USB OTG FS */
(void*) isr_dma2_stream5, /* DMA2 Stream 5 */
(void*) isr_dma2_stream6, /* DMA2 Stream 6 */
(void*) isr_dma2_stream7, /* DMA2 Stream 7 */
(void*) isr_usart6, /* USART6 */
(void*) isr_i2c3_ev, /* I2C3 event */
(void*) isr_i2c3_er, /* I2C3 error */
(void*) isr_otg_hs_ep1_out, /* USB OTG HS End Point 1 Out */
(void*) isr_otg_hs_ep1_in, /* USB OTG HS End Point 1 In */
(void*) isr_otg_hs_wkup, /* USB OTG HS Wakeup through EXTI */
(void*) isr_otg_hs, /* USB OTG HS */
(void*) isr_dcmi, /* DCMI */
(void*) isr_cryp, /* CRYP crypto */
(void*) isr_hash_rng, /* Hash and Rng */
(void*) isr_fpu, /* FPU */
};