cpu.c
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/*
* Copyright 2016, Imagination Technologies Limited and/or its
* affiliated group companies.
*
* 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.
*/
#include <mips/m32c0.h>
#include <mips/regdef.h>
#include <mips/asm.h>
#include <string.h>
#include <assert.h>
#include "periph/uart.h"
#include "periph/timer.h"
#include "arch/panic_arch.h"
#include "kernel_init.h"
#include "cpu.h"
#include "board.h"
void mips_start(void);
extern void _fini(void);
extern void atexit(void (*)(void));
extern void _init(void);
extern void exit(int);
#ifdef FLASH_XIP
extern char _rom_data_copy __attribute__((section("data")));
extern char _fdata __attribute__((section("data")));
extern char _edata __attribute__((section("data")));
#endif
/*
* Note the mips toolchain crt expects to jump to main but RIOT wants the user
* code to start at main for some perverse reason, but thankfully the crt
* does provide this hook function which gets called fairly close to the jump
* to main, thus if we finish off the job of the crt here and never returns
* we can support this madness.
*/
void software_init_hook(void)
{
#ifdef FLASH_XIP
/* copy initialized data from its LMA to VMA */
memcpy(&_fdata, &_rom_data_copy, (int)&_edata - (int)&_fdata);
#endif
atexit(_fini);
_init();
mips_start();
exit(-1);
}
void mips_start(void)
{
board_init();
/* kernel_init */
kernel_init();
}
void panic_arch(void)
{
printf("\nPANIC!\n");
assert(0);
while (1) {
}
}