/* * Copyright (c) 2006-2019, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2019-12-04 Jiaxun Yang Initial version */ #ifndef __ASSEMBLY__ #define __ASSEMBLY__ #endif #include #include #include "asm.h" #include .section ".start", "ax" .set noreorder /* the program entry */ .globl _rtthread_entry _rtthread_entry: #ifndef RT_USING_SELF_BOOT .globl _start _start: #endif PTR_LA ra, _rtthread_entry /* disable interrupt */ MTC0 zero, CP0_CAUSE MTC0 zero, CP0_STATUS # Set CPU to disable interrupt. ehb #ifdef ARCH_MIPS64 dli t0, ST0_KX MTC0 t0, CP0_STATUS #endif /* setup stack pointer */ PTR_LA sp, _system_stack PTR_LA gp, _gp bal rt_cpu_early_init nop /* clear bss */ PTR_LA t0, __bss_start PTR_LA t1, __bss_end _clr_bss_loop: sw zero, 0(t0) bne t1, t0, _clr_bss_loop addu t0, 4 /* jump to RT-Thread RTOS */ jal rtthread_startup nop /* restart, never die */ j _start nop