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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/blackfin/mach-bf561/hotplug.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/blackfin/mach-bf561/hotplug.c')
-rw-r--r--arch/blackfin/mach-bf561/hotplug.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf561/hotplug.c b/arch/blackfin/mach-bf561/hotplug.c
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+++ b/arch/blackfin/mach-bf561/hotplug.c
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+/*
+ * Copyright 2007-2009 Analog Devices Inc.
+ * Graff Yang <graf.yang@analog.com>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/smp.h>
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <mach/pll.h>
+
+int hotplug_coreb;
+
+void platform_cpu_die(void)
+{
+ unsigned long iwr;
+
+ hotplug_coreb = 1;
+
+ /*
+ * When CoreB wakes up, the code in _coreb_trampoline_start cannot
+ * turn off the data cache. This causes the CoreB failed to boot.
+ * As a workaround, we invalidate all the data cache before sleep.
+ */
+ blackfin_invalidate_entire_dcache();
+
+ /* disable core timer */
+ bfin_write_TCNTL(0);
+
+ /* clear ipi interrupt IRQ_SUPPLE_0 of CoreB */
+ bfin_write_SICB_SYSCR(bfin_read_SICB_SYSCR() | (1 << (10 + 1)));
+ SSYNC();
+
+ /* set CoreB wakeup by ipi0, iwr will be discarded */
+ bfin_iwr_set_sup0(&iwr, &iwr, &iwr);
+ SSYNC();
+
+ coreb_die();
+}