diff --git a/cpu/saml21/startup.c b/cpu/saml21/startup.c deleted file mode 100644 index 062d47cb3..000000000 --- a/cpu/saml21/startup.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * Copyright (C) 2015 Kaspar Schleiser - * 2015 FreshTemp, LLC. - * 2014-2015 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_saml21 - * @{ - * - * @file startup.c - * @brief Startup code and interrupt vector definition - * - * @author Thomas Eichinger - * @author Kaspar Schleiser - * @author Hauke Petersen - * - * @} - */ - -#include - -#include "panic.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(); -} - -void isr_nmi(void) -{ - core_panic(PANIC_NMI_HANDLER, "NMI HANDLER"); -} - -void isr_hard_fault(void) -{ - core_panic(PANIC_HARD_FAULT, "HARD FAULT"); -} - -/** - * @brief Default handler is called in case no interrupt handler was defined - */ -void dummy_handler(void) -{ - core_panic(PANIC_DUMMY_HANDLER, "DUMMY HANDLER"); -} - -/* 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"))); -/* SAML21 specific interrupt vector */ -void isr_pm(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_wdt(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_rtc(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_eic(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_nvmctrl(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_dmac(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_usb(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_evsys(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom0(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom1(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom2(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom3(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom4(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_sercom5(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_tcc0(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_tcc1(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_tcc2(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_adc(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_ac(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_dac(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_ptc(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_aes(void) __attribute__ ((weak, alias("dummy_handler"))); -void isr_trng(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-M0+ 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*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) isr_svc, /* system call interrupt */ - (void*) (0UL), /* Reserved */ - (void*) (0UL), /* Reserved */ - (void*) isr_pendsv, /* pendSV interrupt, used for task switching in RIOT */ - (void*) isr_systick, /* SysTick interrupt, not used in RIOT */ - /* Atmel SAML21 specific peripheral handlers */ - (void*) isr_pm, /* 0 Power Manager */ - (void*) isr_wdt, /* 1 Watchdog Timer */ - (void*) isr_rtc, /* 2 Real-Time Counter */ - (void*) isr_eic, /* 3 External Interrupt Controller */ - (void*) isr_nvmctrl, /* 4 Non-Volatile Memory Controller */ - (void*) isr_dmac, /* 5 Direct Memory Access Controller */ - (void*) isr_usb, /* 6 Universal Serial Bus */ - (void*) isr_evsys, /* 7 Event System Interface */ - (void*) isr_sercom0, /* 8 Serial Communication Interface 0 */ - (void*) isr_sercom1, /* 9 Serial Communication Interface 1 */ - (void*) isr_sercom2, /* 10 Serial Communication Interface 2 */ - (void*) isr_sercom3, /* 11 Serial Communication Interface 3 */ - (void*) isr_sercom4, /* 12 Serial Communication Interface 4 */ - (void*) isr_sercom5, /* 13 Serial Communication Interface 5 */ - (void*) isr_tcc0, /* 14 Timer Counter Control 0 */ - (void*) isr_tcc1, /* 15 Timer Counter Control 1 */ - (void*) isr_tcc2, /* 16 Timer Counter Control 2 */ - (void*) isr_tc0, /* 17 Basic Timer Counter 0 */ - (void*) isr_tc1, /* 18 Basic Timer Counter 1 */ - (void*) isr_tc2, /* 19 Basic Timer Counter 2 */ - (void*) isr_tc3, /* 20 Basic Timer Counter 3 */ - (void*) isr_tc4, /* 21 Basic Timer Counter 4 */ - (void*) isr_adc, /* 22 Analog Digital Converter */ - (void*) isr_ac, /* 23 Analog Comparators */ - (void*) isr_dac, /* 24 Digital Analog Converter */ - (void*) isr_ptc, /* 25 Peripheral Touch Controller */ - (void*) isr_aes, /* 26 AES */ - (void*) isr_trng, /* 27 TRNG True Random Number Generator */ -}; diff --git a/cpu/saml21/vectors.c b/cpu/saml21/vectors.c new file mode 100644 index 000000000..f6a59822d --- /dev/null +++ b/cpu/saml21/vectors.c @@ -0,0 +1,122 @@ +/* + * Copyright (C) 2015 Kaspar Schleiser + * 2015 FreshTemp, LLC. + * 2014-2015 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_saml21 + * @{ + * + * @file startup.c + * @brief Startup code and interrupt vector definition + * + * @author Thomas Eichinger + * @author Kaspar Schleiser + * @author Hauke Petersen + * + * @} + */ + +#include +#include "vectors_cortexm.h" + +/* get the start of the ISR stack as defined in the linkerscript */ +extern uint32_t _estack; + +/* define a local dummy handler as it needs to be in the same compilation unit + * as the alias definition */ +void dummy_handler(void) { + dummy_handler_default(); +} + +/* Cortex-M common interrupt vectors */ +WEAK_DEFAULT void isr_svc(void); +WEAK_DEFAULT void isr_pendsv(void); +WEAK_DEFAULT void isr_systick(void); +/* SAML21 specific interrupt vector */ +WEAK_DEFAULT void isr_pm(void); +WEAK_DEFAULT void isr_wdt(void); +WEAK_DEFAULT void isr_rtc(void); +WEAK_DEFAULT void isr_eic(void); +WEAK_DEFAULT void isr_nvmctrl(void); +WEAK_DEFAULT void isr_dmac(void); +WEAK_DEFAULT void isr_usb(void); +WEAK_DEFAULT void isr_evsys(void); +WEAK_DEFAULT void isr_sercom0(void); +WEAK_DEFAULT void isr_sercom1(void); +WEAK_DEFAULT void isr_sercom2(void); +WEAK_DEFAULT void isr_sercom3(void); +WEAK_DEFAULT void isr_sercom4(void); +WEAK_DEFAULT void isr_sercom5(void); +WEAK_DEFAULT void isr_tcc0(void); +WEAK_DEFAULT void isr_tcc1(void); +WEAK_DEFAULT void isr_tcc2(void); +WEAK_DEFAULT void isr_tc0(void); +WEAK_DEFAULT void isr_tc1(void); +WEAK_DEFAULT void isr_tc2(void); +WEAK_DEFAULT void isr_tc3(void); +WEAK_DEFAULT void isr_tc4(void); +WEAK_DEFAULT void isr_adc(void); +WEAK_DEFAULT void isr_ac(void); +WEAK_DEFAULT void isr_dac(void); +WEAK_DEFAULT void isr_ptc(void); +WEAK_DEFAULT void isr_aes(void); +WEAK_DEFAULT void isr_trng(void); + +/* interrupt vector table */ +ISR_VECTORS const void *interrupt_vector[] = { + /* Exception stack pointer */ + (void*) (&_estack), /* pointer to the top of the stack */ + /* Cortex-M0+ handlers */ + (void*) reset_handler_default, /* entry point of the program */ + (void*) nmi_default, /* non maskable interrupt handler */ + (void*) hard_fault_default, /* hard fault exception */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) isr_svc, /* system call interrupt, in RIOT used for + * switching into thread context on boot */ + (void*) (0UL), /* reserved */ + (void*) (0UL), /* reserved */ + (void*) isr_pendsv, /* pendSV interrupt, in RIOT the actual + * context switching is happening here */ + (void*) isr_systick, /* SysTick interrupt, not used in RIOT */ + /* Atmel SAML21 specific peripheral handlers */ + (void*) isr_pm, /* 0 Power Manager */ + (void*) isr_wdt, /* 1 Watchdog Timer */ + (void*) isr_rtc, /* 2 Real-Time Counter */ + (void*) isr_eic, /* 3 External Interrupt Controller */ + (void*) isr_nvmctrl, /* 4 Non-Volatile Memory Controller */ + (void*) isr_dmac, /* 5 Direct Memory Access Controller */ + (void*) isr_usb, /* 6 Universal Serial Bus */ + (void*) isr_evsys, /* 7 Event System Interface */ + (void*) isr_sercom0, /* 8 Serial Communication Interface 0 */ + (void*) isr_sercom1, /* 9 Serial Communication Interface 1 */ + (void*) isr_sercom2, /* 10 Serial Communication Interface 2 */ + (void*) isr_sercom3, /* 11 Serial Communication Interface 3 */ + (void*) isr_sercom4, /* 12 Serial Communication Interface 4 */ + (void*) isr_sercom5, /* 13 Serial Communication Interface 5 */ + (void*) isr_tcc0, /* 14 Timer Counter Control 0 */ + (void*) isr_tcc1, /* 15 Timer Counter Control 1 */ + (void*) isr_tcc2, /* 16 Timer Counter Control 2 */ + (void*) isr_tc0, /* 17 Basic Timer Counter 0 */ + (void*) isr_tc1, /* 18 Basic Timer Counter 1 */ + (void*) isr_tc2, /* 19 Basic Timer Counter 2 */ + (void*) isr_tc3, /* 20 Basic Timer Counter 3 */ + (void*) isr_tc4, /* 21 Basic Timer Counter 4 */ + (void*) isr_adc, /* 22 Analog Digital Converter */ + (void*) isr_ac, /* 23 Analog Comparators */ + (void*) isr_dac, /* 24 Digital Analog Converter */ + (void*) isr_ptc, /* 25 Peripheral Touch Controller */ + (void*) isr_aes, /* 26 AES */ + (void*) isr_trng, /* 27 TRNG True Random Number Generator */ +};