From 2ac493698ba0c0578147045f6660add7bb4ad2eb Mon Sep 17 00:00:00 2001 From: Bernard Xiong Date: Sat, 26 Aug 2017 11:02:39 +0800 Subject: [BSP] cleanup for hifive1 bsp. --- libcpu/risc-v/e310/start_gcc.S | 128 ++++++++++++++++++++--------------------- 1 file changed, 64 insertions(+), 64 deletions(-) (limited to 'libcpu') diff --git a/libcpu/risc-v/e310/start_gcc.S b/libcpu/risc-v/e310/start_gcc.S index 8ed2a03d37..5f1b087b78 100644 --- a/libcpu/risc-v/e310/start_gcc.S +++ b/libcpu/risc-v/e310/start_gcc.S @@ -21,7 +21,7 @@ ; * Date Author Notes ; * 2017-07-16 zhangjun for hifive1 ; */ -#include +#include "sifive/smp.h" #define CLINT_CTRL_ADDR 0x02000000 .section .init @@ -29,116 +29,116 @@ .type _start,@function _start: - .cfi_startproc - .cfi_undefined ra + .cfi_startproc + .cfi_undefined ra .option push .option norelax - la gp, __global_pointer$ + la gp, __global_pointer$ .option pop - la sp, _sp + la sp, _sp /* *disable all interrupt at startup */ - csrrc a5, mstatus, 0xb + csrrc a5, mstatus, 0xb #if defined(ENABLE_SMP) - smp_pause(t0, t1) + smp_pause(t0, t1) #endif - /* Load data section */ - la a0, _data_lma - la a1, _data - la a2, _edata - bgeu a1, a2, 2f + /* Load data section */ + la a0, _data_lma + la a1, _data + la a2, _edata + bgeu a1, a2, 2f 1: - lw t0, (a0) - sw t0, (a1) - addi a0, a0, 4 - addi a1, a1, 4 - bltu a1, a2, 1b + lw t0, (a0) + sw t0, (a1) + addi a0, a0, 4 + addi a1, a1, 4 + bltu a1, a2, 1b 2: - /* Clear bss section */ - la a0, __bss_start - la a1, _end - bgeu a0, a1, 2f + /* Clear bss section */ + la a0, __bss_start + la a1, _end + bgeu a0, a1, 2f 1: - sw zero, (a0) - addi a0, a0, 4 - bltu a0, a1, 1b + sw zero, (a0) + addi a0, a0, 4 + bltu a0, a1, 1b 2: - /* Call global constructors */ - la a0, __libc_fini_array - call atexit - call __libc_init_array - /*call _init directly in rt-thread*/ + /* Call global constructors */ + la a0, __libc_fini_array + call atexit + call __libc_init_array + /*call _init directly in rt-thread*/ call _init #ifndef __riscv_float_abi_soft - /* Enable FPU */ - li t0, MSTATUS_FS - csrs mstatus, t0 - csrr t1, mstatus - and t1, t1, t0 - beqz t1, 1f - fssr x0 + /* Enable FPU */ + li t0, MSTATUS_FS + csrs mstatus, t0 + csrr t1, mstatus + and t1, t1, t0 + beqz t1, 1f + fssr x0 1: #endif #if defined(ENABLE_SMP) - smp_resume(t0, t1) + smp_resume(t0, t1) - csrr a0, mhartid - bnez a0, 2f + csrr a0, mhartid + bnez a0, 2f #endif - auipc ra, 0 - addi sp, sp, -16 + auipc ra, 0 + addi sp, sp, -16 #if __riscv_xlen == 32 - sw ra, 8(sp) + sw ra, 8(sp) #else - sd ra, 8(sp) + sd ra, 8(sp) #endif - /* argc = argv = 0 */ - li a0, 0 - li a1, 0 - call main - tail exit + /* argc = argv = 0 */ + li a0, 0 + li a1, 0 + call main + tail exit 1: - j 1b + j 1b #if defined(ENABLE_SMP) 2: - la t0, trap_entry - csrw mtvec, t0 + la t0, trap_entry + csrw mtvec, t0 - csrr a0, mhartid - la t1, _sp - slli t0, a0, 10 - sub sp, t1, t0 + csrr a0, mhartid + la t1, _sp + slli t0, a0, 10 + sub sp, t1, t0 - auipc ra, 0 - addi sp, sp, -16 + auipc ra, 0 + addi sp, sp, -16 #if __riscv_xlen == 32 - sw ra, 8(sp) + sw ra, 8(sp) #else - sd ra, 8(sp) + sd ra, 8(sp) #endif - call secondary_main - tail exit + call secondary_main + tail exit 1: - j 1b + j 1b #endif - .cfi_endproc + .cfi_endproc #include "encoding.h" #include "sifive/bits.h" - .section .text.entry + .section .text.entry .align 2 .global trap_entry trap_entry: -- cgit v1.3.1