| /* |
| * OMAP4 machine specific smp.h |
| * |
| * Copyright (C) 2009 Texas Instruments, Inc. |
| * |
| * Author: |
| * Santosh Shilimkar <santosh.shilimkar@ti.com> |
| * |
| * Interface functions needed for the SMP. This file is based on arm |
| * realview smp platform. |
| * Copyright (c) 2003 ARM Limited. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef OMAP_ARCH_SMP_H |
| #define OMAP_ARCH_SMP_H |
| |
| #include <asm/hardware/gic.h> |
| |
| /* |
| * set_event() is used to wake up secondary core from wfe using sev. ROM |
| * code puts the second core into wfe(standby). |
| * |
| */ |
| #define set_event() __asm__ __volatile__ ("sev" : : : "memory") |
| |
| /* Needed for secondary core boot */ |
| extern void omap_secondary_startup(void); |
| |
| /* |
| * We use Soft IRQ1 as the IPI |
| */ |
| static inline void smp_cross_call(const struct cpumask *mask) |
| { |
| gic_raise_softirq(mask, 1); |
| } |
| |
| /* |
| * Read MPIDR: Multiprocessor affinity register |
| */ |
| #define hard_smp_processor_id() \ |
| ({ \ |
| unsigned int cpunum; \ |
| __asm__("mrc p15, 0, %0, c0, c0, 5" \ |
| : "=r" (cpunum)); \ |
| cpunum &= 0x0F; \ |
| }) |
| |
| #endif |
