115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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* Copyright (c) 2021 - 2022 hpmicro
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*
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*
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*/
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#include "hpm_common.h"
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#include "hpm_soc.h"
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#include "hpm_l1c_drv.h"
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#include <rtthread.h>
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void system_init(void);
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extern int entry(void);
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extern void __libc_init_array(void);
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extern void __libc_fini_array(void);
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void system_init(void)
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{
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disable_global_irq(CSR_MSTATUS_MIE_MASK);
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disable_irq_from_intc();
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enable_irq_from_intc();
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enable_global_irq(CSR_MSTATUS_MIE_MASK);
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#ifndef CONFIG_NOT_ENABLE_ICACHE
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l1c_ic_enable();
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#endif
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#ifndef CONFIG_NOT_ENABLE_DCACHE
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l1c_dc_enable();
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#endif
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}
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__attribute__((weak)) void c_startup(void)
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{
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uint32_t i, size;
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#ifdef FLASH_XIP
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extern uint8_t __vector_ram_start__[], __vector_ram_end__[], __vector_load_addr__[];
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size = __vector_ram_end__ - __vector_ram_start__;
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for (i = 0; i < size; i++) {
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*(__vector_ram_start__ + i) = *(__vector_load_addr__ + i);
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}
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#endif
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extern uint8_t __etext[];
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extern uint8_t __bss_start__[], __bss_end__[];
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extern uint8_t __data_start__[], __data_end__[];
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extern uint8_t __noncacheable_bss_start__[], __noncacheable_bss_end__[];
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extern uint8_t __ramfunc_start__[], __ramfunc_end__[];
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extern uint8_t __noncacheable_init_start__[], __noncacheable_init_end__[];
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/* bss section */
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size = __bss_end__ - __bss_start__;
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for (i = 0; i < size; i++) {
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*(__bss_start__ + i) = 0;
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}
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/* noncacheable bss section */
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size = __noncacheable_bss_end__ - __noncacheable_bss_start__;
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for (i = 0; i < size; i++) {
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*(__noncacheable_bss_start__ + i) = 0;
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}
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/* data section LMA: etext */
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size = __data_end__ - __data_start__;
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for (i = 0; i < size; i++) {
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*(__data_start__ + i) = *(__etext + i);
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}
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/* ramfunc section LMA: etext + data length */
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size = __ramfunc_end__ - __ramfunc_start__;
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for (i = 0; i < size; i++) {
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*(__ramfunc_start__ + i) = *(__etext + (__data_end__ - __data_start__) + i);
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}
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/* noncacheable init section LMA: etext + data length + ramfunc length */
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size = __noncacheable_init_end__ - __noncacheable_init_start__;
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for (i = 0; i < size; i++) {
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*(__noncacheable_init_start__ + i) = *(__etext + (__data_end__ - __data_start__) + (__ramfunc_end__ - __ramfunc_start__) + i);
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}
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}
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__attribute__((weak)) int main(void)
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{
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while(1);
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}
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void reset_handler(void)
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{
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/**
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* Disable preemptive interrupt
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*/
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HPM_PLIC->FEATURE = 0;
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/*
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* Initialize LMA/VMA sections.
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* Relocation for any sections that need to be copied from LMA to VMA.
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*/
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c_startup();
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/* Call platform specific hardware initialization */
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system_init();
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/* Do global constructors */
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__libc_init_array();
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/* Entry function */
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entry();
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}
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__attribute__((weak)) void _init()
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{
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}
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