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Diffstat (limited to 'ANDROID_3.4.5/arch/arm/plat-versatile/platsmp.c')
-rw-r--r--ANDROID_3.4.5/arch/arm/plat-versatile/platsmp.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/ANDROID_3.4.5/arch/arm/plat-versatile/platsmp.c b/ANDROID_3.4.5/arch/arm/plat-versatile/platsmp.c
deleted file mode 100644
index 49c7db48..00000000
--- a/ANDROID_3.4.5/arch/arm/plat-versatile/platsmp.c
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * linux/arch/arm/plat-versatile/platsmp.c
- *
- * Copyright (C) 2002 ARM Ltd.
- * All Rights Reserved
- *
- * 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/init.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/jiffies.h>
-#include <linux/smp.h>
-
-#include <asm/cacheflush.h>
-#include <asm/smp_plat.h>
-#include <asm/hardware/gic.h>
-
-/*
- * control for which core is the next to come out of the secondary
- * boot "holding pen"
- */
-volatile int __cpuinitdata pen_release = -1;
-
-/*
- * Write pen_release in a way that is guaranteed to be visible to all
- * observers, irrespective of whether they're taking part in coherency
- * or not. This is necessary for the hotplug code to work reliably.
- */
-static void __cpuinit write_pen_release(int val)
-{
- pen_release = val;
- smp_wmb();
- __cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
- outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
-}
-
-static DEFINE_SPINLOCK(boot_lock);
-
-void __cpuinit platform_secondary_init(unsigned int cpu)
-{
- /*
- * if any interrupts are already enabled for the primary
- * core (e.g. timer irq), then they will not have been enabled
- * for us: do so
- */
- gic_secondary_init(0);
-
- /*
- * let the primary processor know we're out of the
- * pen, then head off into the C entry point
- */
- write_pen_release(-1);
-
- /*
- * Synchronise with the boot thread.
- */
- spin_lock(&boot_lock);
- spin_unlock(&boot_lock);
-}
-
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
- unsigned long timeout;
-
- /*
- * Set synchronisation state between this boot processor
- * and the secondary one
- */
- spin_lock(&boot_lock);
-
- /*
- * This is really belt and braces; we hold unintended secondary
- * CPUs in the holding pen until we're ready for them. However,
- * since we haven't sent them a soft interrupt, they shouldn't
- * be there.
- */
- write_pen_release(cpu_logical_map(cpu));
-
- /*
- * Send the secondary CPU a soft interrupt, thereby causing
- * the boot monitor to read the system wide flags register,
- * and branch to the address found there.
- */
- gic_raise_softirq(cpumask_of(cpu), 1);
-
- timeout = jiffies + (1 * HZ);
- while (time_before(jiffies, timeout)) {
- smp_rmb();
- if (pen_release == -1)
- break;
-
- udelay(10);
- }
-
- /*
- * now the secondary core is starting up let it run its
- * calibrations, then wait for it to finish
- */
- spin_unlock(&boot_lock);
-
- return pen_release != -1 ? -ENOSYS : 0;
-}