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Merge pull request #845 from caogos/master 

[BSP] Add FPU option for loongson1c.
This commit is contained in:
Bernard Xiong 2017-09-14 17:06:11 +08:00 committed by GitHub
parent 6d07c084c7 96f3600bde
commit 0d193254f8
4 changed files with 11 additions and 3 deletions
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6
bsp/ls1cdev/applications/startup.c
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@ -51,9 +51,9 @@ void rtthread_startup(void)
rt_hw_interrupt_init();
/* copy vector */
rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x20);
rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x20);
rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x20);
rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x80);
rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x80);
rt_memcpy((void *)(A_K0BASE + 0x200), irq_exception, 0x80);
invalidate_writeback_dcache_all();
invalidate_icache_all();

2
bsp/ls1cdev/drivers/board.c
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@ -94,8 +94,10 @@ void rt_hw_board_init(void)
/* init operating system timer */
rt_hw_timer_init();
#ifdef RT_USING_FPU
/* init hardware fpu */
rt_hw_fpu_init();
#endif
rt_kprintf("current sr: 0x%08x\n", read_c0_status());
}

2
bsp/ls1cdev/rtconfig.h
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@ -75,6 +75,8 @@
#define RT_UART_RX_BUFFER_SIZE 64
// </section>
#define RT_USING_FPU
// <section name="RT_USING_CONSOLE" description="Using console" default="true" >
#define RT_USING_CONSOLE
// <integer name="RT_CONSOLEBUF_SIZE" description="The buffer size for console output" default="128" />

4
libcpu/mips/loongson_1c/stackframe_fpu.h
View File

@ -37,6 +37,7 @@
.macro SAVE_FPU
.set push
.set noreorder
#ifdef RT_USING_FPU
move k1, sp /* 保存现场 */
and k0, k1, 0xFFFFFFF8 /* 8字节对齐 */
PTR_SUBU sp, k0, PT_FPU_SIZE /* 计算栈底 */
@ -57,6 +58,7 @@
s.d $f28, PT_FPU_R28(sp)
s.d $f30, PT_FPU_R30(sp)
move sp, k1 /* 恢复现场 */
#endif
.set reorder
.set pop
.endm
@ -65,6 +67,7 @@
.macro RESTORE_FPU
.set push
.set noreorder
#ifdef RT_USING_FPU
move k1, sp /* 保存现场 */
and k0, k1, 0xFFFFFFF8 /* 8字节对齐 */
PTR_SUBU sp, k0, PT_FPU_SIZE /* 计算栈底*/
@ -85,6 +88,7 @@
l.d $f28, PT_FPU_R28(sp)
l.d $f30, PT_FPU_R30(sp)
move sp, k1 /* 恢复现场 */
#endif
.set reorder
.set pop
.endm