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https://github.com/RIOT-OS/RIOT.git
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c3417d151a
Enforce the 512-byte vector table alignment and set the VTOR register to the actual address of the vector table.
265 lines
9.7 KiB
C
265 lines
9.7 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_cc2538
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* @{
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*
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* @file startup.c
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* @brief Startup code and interrupt vector definition
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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* @author Ian Martin <ian@locicontrols.com>
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*/
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#include <stdint.h>
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#include "board.h"
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/**
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* memory markers as defined in the linker script
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*/
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extern uint32_t _sfixed;
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extern uint32_t _efixed;
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extern uint32_t _etext;
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extern uint32_t _srelocate;
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extern uint32_t _erelocate;
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extern uint32_t _szero;
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extern uint32_t _ezero;
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extern uint32_t _sstack;
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extern uint32_t _estack;
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/**
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* @brief functions for initializing the board, std-lib and kernel
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*/
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extern void board_init(void);
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extern void kernel_init(void);
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extern void __libc_init_array(void);
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/**
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* @brief This function is the entry point after a system reset
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*
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* After a system reset, the following steps are necessary and carried out:
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* 1. load data section from flash to ram
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* 2. overwrite uninitialized data section (BSS) with zeros
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* 3. initialize the newlib
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* 4. initialize the board (sync clock, setup std-IO)
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* 5. initialize and start RIOTs kernel
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*/
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void reset_handler(void)
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{
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uint32_t *dst;
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uint32_t *src = &_etext;
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/* load data section from flash to ram */
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for (dst = &_srelocate; dst < &_erelocate;) {
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*(dst++) = *(src++);
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}
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/* default bss section to zero */
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for (dst = &_szero; dst < &_ezero;) {
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*(dst++) = 0;
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}
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/* initialize the board and startup the kernel */
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board_init();
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/* initialize std-c library (this should be done after board_init) */
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__libc_init_array();
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/* startup the kernel */
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kernel_init();
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}
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/**
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* @brief Default handler is called in case no interrupt handler was defined
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*/
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void dummy_handler(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_nmi(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_mem_manage(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_debug_mon(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_hard_fault(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_bus_fault(void)
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{
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while (1) {
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asm("nop");
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}
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}
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void isr_usage_fault(void)
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{
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while (1) {
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asm("nop");
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}
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}
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/* Cortex-M specific interrupt vectors */
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void isr_svc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pendsv(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_systick(void) __attribute__ ((weak, alias("dummy_handler")));
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/* CC2538 specific interrupt vector */
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void isr_gpioa(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_gpiob(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_gpioc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_gpiod(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_uart1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_ssi0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_i2c(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_adc(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_watchdog(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer0_chan0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer0_chan1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer1_chan0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer1_chan1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer2_chan0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer2_chan1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_comp(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_rfcoretx(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_rfcoreerr(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_icepick(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_flash(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_aes(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_pka(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_sleepmode(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_mactimer(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_ssi1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer3_chan0(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_timer3_chan1(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_usb(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_dma(void) __attribute__ ((weak, alias("dummy_handler")));
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void isr_dmaerr(void) __attribute__ ((weak, alias("dummy_handler")));
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/* interrupt vector table */
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__attribute__ ((section(".vectors"), aligned(CC2538_VTOR_ALIGN)))
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const void *interrupt_vector[] = {
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/* Stack pointer */
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(void*) (&_estack), /* pointer to the top of the empty stack */
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/* Cortex-M handlers */
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(void*) reset_handler, /* entry point of the program */
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(void*) isr_nmi, /* non maskable interrupt handler */
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(void*) isr_hard_fault, /* if you end up here its not good */
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(void*) isr_mem_manage, /* memory controller interrupt */
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(void*) isr_bus_fault, /* also not good to end up here */
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(void*) isr_usage_fault, /* autsch */
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(void*) (0UL), /* Reserved */
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(void*) (0UL), /* Reserved */
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(void*) (0UL), /* Reserved */
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(void*) (0UL), /* Reserved */
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(void*) isr_svc, /* system call interrupt */
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(void*) isr_debug_mon, /* debug interrupt */
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(void*) (0UL), /* Reserved */
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(void*) isr_pendsv, /* pendSV interrupt, used for task switching in RIOT */
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(void*) isr_systick, /* SysTick interrupt, not used in RIOT */
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/* CC2538 specific peripheral handlers */
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(void*) isr_gpioa, /* 16 GPIO Port A */
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(void*) isr_gpiob, /* 17 GPIO Port B */
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(void*) isr_gpioc, /* 18 GPIO Port C */
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(void*) isr_gpiod, /* 19 GPIO Port D */
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(void*) (0UL), /* 20 none */
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(void*) isr_uart0, /* 21 UART0 Rx and Tx */
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(void*) isr_uart1, /* 22 UART1 Rx and Tx */
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(void*) isr_ssi0, /* 23 SSI0 Rx and Tx */
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(void*) isr_i2c, /* 24 I2C Master and Slave */
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(void*) (0UL), /* 25 Reserved */
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(void*) (0UL), /* 26 Reserved */
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(void*) (0UL), /* 27 Reserved */
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(void*) (0UL), /* 28 Reserved */
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(void*) (0UL), /* 29 Reserved */
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(void*) isr_adc, /* 30 ADC Sequence 0 */
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(void*) (0UL), /* 31 Reserved */
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(void*) (0UL), /* 32 Reserved */
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(void*) (0UL), /* 33 Reserved */
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(void*) isr_watchdog, /* 34 Watchdog timer, timer 0 */
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(void*) isr_timer0_chan0, /* 35 Timer 0 subtimer A */
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(void*) isr_timer0_chan1, /* 36 Timer 0 subtimer B */
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(void*) isr_timer1_chan0, /* 37 Timer 1 subtimer A */
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(void*) isr_timer1_chan1, /* 38 Timer 1 subtimer B */
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(void*) isr_timer2_chan0, /* 39 Timer 2 subtimer A */
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(void*) isr_timer2_chan1, /* 40 Timer 2 subtimer B */
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(void*) isr_comp, /* 41 Analog Comparator 0 */
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(void*) isr_rfcoretx, /* 42 RFCore Rx/Tx */
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(void*) isr_rfcoreerr, /* 43 RFCore Error */
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(void*) isr_icepick, /* 44 IcePick */
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(void*) isr_flash, /* 45 FLASH Control */
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(void*) isr_aes, /* 46 AES */
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(void*) isr_pka, /* 47 PKA */
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(void*) isr_sleepmode, /* 48 Sleep Timer */
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(void*) isr_mactimer, /* 49 MacTimer */
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(void*) isr_ssi1, /* 50 SSI1 Rx and Tx */
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(void*) isr_timer3_chan0, /* 51 Timer 3 subtimer A */
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(void*) isr_timer3_chan1, /* 52 Timer 3 subtimer B */
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(void*) (0UL), /* 53 Reserved */
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(void*) (0UL), /* 54 Reserved */
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(void*) (0UL), /* 55 Reserved */
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(void*) (0UL), /* 56 Reserved */
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(void*) (0UL), /* 57 Reserved */
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(void*) (0UL), /* 58 Reserved */
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(void*) (0UL), /* 59 Reserved */
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(void*) isr_usb, /* 60 USB 2538 */
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(void*) (0UL), /* 61 Reserved */
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(void*) isr_dma, /* 62 uDMA */
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(void*) isr_dmaerr, /* 63 uDMA Error */
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};
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#if UPDATE_CCA
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/**
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* @brief Flash Customer Configuration Area (CCA)
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*
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* Defines bootloader backdoor configuration, boot image validity and base address, and flash page lock bits.
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*/
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__attribute__((section(".flashcca"), used))
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const uint32_t cca[] = {
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/* Bootloader Backdoor Configuration: */
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0xe0ffffff | (CCA_BACKDOOR_ENABLE << 28) | (CCA_BACKDOOR_ACTIVE_LEVEL << 27) | (CCA_BACKDOOR_PORT_A_PIN << 24),
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0x00000000, /**< Image Valid */
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(uintptr_t)interrupt_vector, /**< Application Entry Point */
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/* Unlock all pages and debug: */
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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0xffffffff,
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};
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#endif
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/** @} */
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