int shmobile_platform_cpu_kill(unsigned int cpu)
{
if (is_r8a7779())
return r8a7779_platform_cpu_kill(cpu);
return 1;
}
static int r8a7779_cpu_kill(unsigned int cpu)
{
if (shmobile_smp_scu_cpu_kill(cpu))
return r8a7779_platform_cpu_kill(cpu);
return 0;
}
static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
{
/* Map the reset vector (in headsmp-scu.S, headsmp.S) */
__raw_writel(__pa(shmobile_boot_vector), AVECR);
shmobile_boot_fn = virt_to_phys(shmobile_boot_scu);
shmobile_boot_arg = (unsigned long)shmobile_scu_base;
/* setup r8a7779 specific SCU bits */
shmobile_scu_base = IOMEM(R8A7779_SCU_BASE);
shmobile_smp_scu_prepare_cpus(max_cpus);
r8a7779_pm_init();
/* power off secondary CPUs */
r8a7779_platform_cpu_kill(1);
r8a7779_platform_cpu_kill(2);
r8a7779_platform_cpu_kill(3);
}
void __init r8a7779_smp_prepare_cpus(void)
{
int cpu = cpu_logical_map(0);
scu_enable(scu_base_addr());
/* Map the reset vector (in headsmp.S) */
__raw_writel(__pa(shmobile_secondary_vector), AVECR);
/* enable cache coherency on CPU0 */
modify_scu_cpu_psr(0, 3 << (cpu * 8));
r8a7779_pm_init();
/* power off secondary CPUs */
r8a7779_platform_cpu_kill(1);
r8a7779_platform_cpu_kill(2);
r8a7779_platform_cpu_kill(3);
}
static int __maybe_unused r8a7779_cpu_kill(unsigned int cpu)
{
int k;
/* this function is running on another CPU than the offline target,
* here we need wait for shutdown code in platform_cpu_die() to
* finish before asking SoC-specific code to power off the CPU core.
*/
for (k = 0; k < 1000; k++) {
if (shmobile_cpu_is_dead(cpu))
return r8a7779_platform_cpu_kill(cpu);
mdelay(1);
}
return 0;
}
