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188 lines
5.4 KiB
C
188 lines
5.4 KiB
C
/* See the end of this file for copyright, license, and warranty information. */
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#include <arch/at91sam3x8e/hardware.h>
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#include <arch/at91sam3x8e/interrupt.h>
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#include <ardix/malloc.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include <toolchain.h>
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/* from flash.ld */
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extern uint32_t _sfixed; /* fixed area start */
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extern uint32_t _efixed; /* fixed area end */
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extern uint32_t _etext; /* program (.text) end */
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extern uint32_t _srelocate; /* relocate (.data) start */
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extern uint32_t _erelocate; /* relocate end */
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extern uint32_t _szero; /* zero area (.bss) start */
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extern uint32_t _ezero; /* zero area end */
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extern uint32_t _sstack; /* stack start */
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extern uint32_t _estack; /* stack end */
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extern uint32_t _sheap; /* heap start */
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extern uint32_t _eheap; /* heap end */
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/* implementation in init/main.c */
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void do_bootstrap(void);
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__naked void irq_reset(void)
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{
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sys_init();
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memmove(&_srelocate, &_etext, (size_t)(&_erelocate) - (size_t)(&_srelocate));
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memset(&_szero, 0, (size_t)(&_ezero) - (size_t)(&_szero));
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/* There is no userspace yet, so the Kernel gets the entire heap for now */
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malloc_init(&_sheap, (size_t)(&_eheap) - (size_t)(&_sheap));
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/* start the Kernel */
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do_bootstrap();
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/* halt (this should never be reached) */
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while (1);
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}
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/**
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* Default IRQ for unimplemented interrupts.
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* This will halt the system.
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*/
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void irq_stub(void)
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{
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while (1);
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}
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__weak __alias(irq_stub) void irq_nmi(void);
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__weak __alias(irq_stub) void irq_hard_fault(void);
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__weak __alias(irq_stub) void irq_mem_fault(void);
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__weak __alias(irq_stub) void irq_bus_fault(void);
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__weak __alias(irq_stub) void irq_usage_fault(void);
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__weak __alias(irq_stub) void irq_svc(void);
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__weak __alias(irq_stub) void irq_debug_mon(void);
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__weak __alias(irq_stub) void irq_pend_sv(void);
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__weak __alias(irq_stub) void irq_sys_tick(void);
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__weak __alias(irq_stub) void irq_supc(void);
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__weak __alias(irq_stub) void irq_rstc(void);
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__weak __alias(irq_stub) void irq_rtc(void);
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__weak __alias(irq_stub) void irq_rtt(void);
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__weak __alias(irq_stub) void irq_wdt(void);
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__weak __alias(irq_stub) void irq_pmc(void);
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__weak __alias(irq_stub) void irq_efc0(void);
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__weak __alias(irq_stub) void irq_efc1(void);
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__weak __alias(irq_stub) void irq_uart(void);
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__weak __alias(irq_stub) void irq_smc(void);
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__weak __alias(irq_stub) void irq_pioa(void);
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__weak __alias(irq_stub) void irq_piob(void);
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__weak __alias(irq_stub) void irq_pioc(void);
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__weak __alias(irq_stub) void irq_piod(void);
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__weak __alias(irq_stub) void irq_usart0(void);
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__weak __alias(irq_stub) void irq_usart1(void);
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__weak __alias(irq_stub) void irq_usart2(void);
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__weak __alias(irq_stub) void irq_usart3(void);
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__weak __alias(irq_stub) void irq_hsmci(void);
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__weak __alias(irq_stub) void irq_twi0(void);
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__weak __alias(irq_stub) void irq_twi1(void);
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__weak __alias(irq_stub) void irq_spi0(void);
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__weak __alias(irq_stub) void irq_ssc(void);
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__weak __alias(irq_stub) void irq_tc0(void);
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__weak __alias(irq_stub) void irq_tc1(void);
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__weak __alias(irq_stub) void irq_tc2(void);
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__weak __alias(irq_stub) void irq_tc3(void);
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__weak __alias(irq_stub) void irq_tc4(void);
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__weak __alias(irq_stub) void irq_tc5(void);
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__weak __alias(irq_stub) void irq_tc6(void);
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__weak __alias(irq_stub) void irq_tc7(void);
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__weak __alias(irq_stub) void irq_tc8(void);
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__weak __alias(irq_stub) void irq_pwm(void);
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__weak __alias(irq_stub) void irq_adc(void);
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__weak __alias(irq_stub) void irq_dacc(void);
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__weak __alias(irq_stub) void irq_dmac(void);
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__weak __alias(irq_stub) void irq_uotghs(void);
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__weak __alias(irq_stub) void irq_trng(void);
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__weak __alias(irq_stub) void irq_emac(void);
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__weak __alias(irq_stub) void irq_can0(void);
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__weak __alias(irq_stub) void irq_can1(void);
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__section(.vectors) const void *exception_table[] = {
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&_estack, /* initial SP value (stack grows down) */
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&irq_reset, /* reset vector */
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NULL, /* reserved */
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&irq_hard_fault, /* hard fault */
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&irq_mem_fault, /* memory management fault */
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&irq_bus_fault, /* bus fault */
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&irq_usage_fault, /* usage fault */
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NULL, /* reserved */
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NULL, /* reserved */
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NULL, /* reserved */
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NULL, /* reserved */
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&irq_svc, /* SVC call (used for syscalls) */
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&irq_debug_mon, /* reserved for debug */
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NULL, /* reserved */
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&irq_pend_sv, /* PendSV (used by the scheduler) */
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&irq_sys_tick, /* SysTick */
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/*
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* Ok I am REALLY tired of writing out mnemonics.
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* Just have a look at include/arch/at91sam3x8e.h for details.
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*/
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&irq_supc,
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&irq_rstc,
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&irq_rtc,
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&irq_rtt,
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&irq_wdt,
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&irq_pmc,
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&irq_efc0,
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&irq_efc1,
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&irq_uart,
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&irq_smc,
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NULL, /* reserved */
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&irq_pioa,
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&irq_piob,
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&irq_pioc,
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&irq_piod,
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NULL, /* reserved */
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NULL, /* reserved */
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&irq_usart0,
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&irq_usart1,
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&irq_usart2,
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&irq_usart3,
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&irq_hsmci,
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&irq_twi0,
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&irq_twi1,
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&irq_spi0,
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NULL, /* reserved */
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&irq_ssc,
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&irq_tc0,
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&irq_tc1,
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&irq_tc2,
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&irq_tc3,
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&irq_tc4,
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&irq_tc5,
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&irq_tc6,
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&irq_tc7,
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&irq_tc8,
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&irq_pwm,
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&irq_adc,
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&irq_dacc,
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&irq_dmac,
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&irq_uotghs,
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&irq_trng,
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&irq_emac,
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&irq_can0,
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&irq_can1,
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};
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/*
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* This file is part of Ardix.
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* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
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*
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* Ardix is non-violent software: you may only use, redistribute,
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* and/or modify it under the terms of the CNPLv6+ as found in
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* the LICENSE file in the source code root directory or at
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* <https://git.pixie.town/thufie/CNPL>.
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*
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* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
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* permitted by applicable law. See the CNPLv6+ for details.
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*/
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