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