/* * OMAP4 SMP cpu-hotplug support * * Copyright (C) 2010 Texas Instruments, Inc. * Author: * Santosh Shilimkar <santosh.shilimkar@ti.com> * * Platform file needed for the OMAP4 SMP. This file is based on arm * realview smp platform. * Copyright (c) 2002 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. */ #include <linux/kernel.h> #include <linux/errno.h> #include <linux/smp.h> #include <linux/io.h> #include "omap-wakeupgen.h" #include "common.h" #include "powerdomain.h" /* * platform-specific code to shutdown a CPU * Called with IRQs disabled */
void omap4_cpu_die(unsigned int cpu) { unsigned int boot_cpu = 0; void __iomem *base = omap_get_wakeupgen_base(); /* * we're ready for shutdown now, so do it */ if (omap_secure_apis_support()) { if (omap_modify_auxcoreboot0(0x0, 0x200) != 0x0) pr_err("Secure clear status failed\n"); } else { writel_relaxed(0, base + OMAP_AUX_CORE_BOOT_0); } for (;;) { /* * Enter into low power state */ omap4_hotplug_cpu(cpu, PWRDM_POWER_OFF); if (omap_secure_apis_support()) boot_cpu = omap_read_auxcoreboot0(); else boot_cpu = readl_relaxed(base + OMAP_AUX_CORE_BOOT_0) >> 5; if (boot_cpu == smp_processor_id()) { /* * OK, proper wakeup, we're done */ break; } pr_debug("CPU%u: spurious wakeup call\n", cpu); } }Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| santosh shilimkar | santosh shilimkar | 111 | 97.37% | 3 | 60.00% |
| victor kamensky | victor kamensky | 2 | 1.75% | 1 | 20.00% |
| marc zyngier | marc zyngier | 1 | 0.88% | 1 | 20.00% |
| Total | 114 | 100.00% | 5 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp | |
| tony lindgren | tony lindgren | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp | |
| santosh shilimkar | santosh shilimkar | 132 | 88.00% | 3 | 37.50% |
| tony lindgren | tony lindgren | 15 | 10.00% | 3 | 37.50% |
| victor kamensky | victor kamensky | 2 | 1.33% | 1 | 12.50% |
| marc zyngier | marc zyngier | 1 | 0.67% | 1 | 12.50% |
| Total | 150 | 100.00% | 8 | 100.00% |