Esempio n. 1
0
void amon_cpu_start(int cpu,
		    unsigned long pc, unsigned long sp,
		    unsigned long gp, unsigned long a0)
{
#ifdef CONFIG_RTL_8198C
	if (!amon_cpu_avail(cpu))
		return;
	if (cpu == smp_processor_id()) {
		pr_debug("SMP-amon: I am cpu%d!\n", cpu);
		return;
	}

	pr_debug("SMP-amon: starting cpu%d\n", cpu);

	REG32(((unsigned int )&smpboot_pc)|0xa0000000)=pc;
	REG32(((unsigned int )&smpboot_gp)|0xa0000000)=gp;
	REG32(((unsigned int )&smpboot_sp)|0xa0000000)=sp;
	REG32(((unsigned int )&smpboot_a0)|0xa0000000)=a0;

	//REG32(LAUNCH_REG)=pc|0xa0000000;
	REG32(LAUNCH_REG)=pc;
		
	smp_wmb();              /* Target must see parameters before go */
	REG32(POLLING_REG)=PATT_MAGIC;
	smp_wmb();              /* Target must see go before we poll  */

	//while (REG32(POLLING_REG) == PATT_MAGIC) {};

	smp_rmb();      /* Target will be updating flags soon */
	pr_debug("SMP-amon: cpu%d gone!\n", cpu);

#else
	volatile struct smp_boot *smpboot = (struct smp_boot *) SMPBOOT;

	if (!amon_cpu_avail(cpu))
		return;
	if (cpu == smp_processor_id()) {
		pr_debug("SMP-amon: I am cpu%d!\n", cpu);
		return;
	}
	smpboot += cpu;

	pr_debug("SMP-amon: starting cpu%d\n", cpu);

	smpboot->pc = pc;
	smpboot->gp = gp;
	smpboot->sp = sp;
	smpboot->a0 = a0;

	smp_wmb();              /* Target must see parameters before go */
	smpboot->flags |= SMP_LAUNCH_FGO;
	smp_wmb();              /* Target must see go before we poll  */

	while ((smpboot->flags & SMP_LAUNCH_FGONE) == 0)
		;
	smp_rmb();      /* Target will be updating flags soon */
	pr_debug("SMP-amon: cpu%d gone!\n", cpu);
#endif
}
Esempio n. 2
0
void amon_cpu_start(int cpu,
		    unsigned long pc, unsigned long sp,
		    unsigned long gp, unsigned long a0)
{
	volatile struct cpulaunch *launch =
		(struct cpulaunch  *)CKSEG0ADDR(CPULAUNCH);

	if (!amon_cpu_avail(cpu))
		return;
	if (cpu == smp_processor_id()) {
		pr_debug("launch: I am cpu%d!\n", cpu);
		return;
	}
	launch += cpu;

	pr_debug("launch: starting cpu%d\n", cpu);

	launch->pc = pc;
	launch->gp = gp;
	launch->sp = sp;
	launch->a0 = a0;

	/* Make sure target sees parameters before the go bit */
	smp_mb();

	launch->flags |= LAUNCH_FGO;
	while ((launch->flags & LAUNCH_FGONE) == 0)
		;
	pr_debug("launch: cpu%d gone!\n", cpu);
}
Esempio n. 3
0
int amon_cpu_start(int cpu,
		    unsigned long pc, unsigned long sp,
		    unsigned long gp, unsigned long a0)
{
	volatile struct cpulaunch *launch =
		(struct cpulaunch  *)CKSEG0ADDR(CPULAUNCH);

	if (!amon_cpu_avail(cpu))
		return -1;
	if (cpu == smp_processor_id()) {
		pr_debug("launch: I am cpu%d!\n", cpu);
		return -1;
	}
	launch += cpu;

	pr_debug("launch: starting cpu%d\n", cpu);

	launch->pc = pc;
	launch->gp = gp;
	launch->sp = sp;
	launch->a0 = a0;

	smp_wmb();		/* Target must see parameters before go */
	launch->flags |= LAUNCH_FGO;
	smp_wmb();		/* Target must see go before we poll  */

	while ((launch->flags & LAUNCH_FGONE) == 0)
		;
	smp_rmb();	/* Target will be updating flags soon */
	pr_debug("launch: cpu%d gone!\n", cpu);

	return 0;
}