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authorJeff Ohlstein <johlstei@codeaurora.org>2010-11-30 13:06:36 -0800
committerDavid Brown <davidb@codeaurora.org>2011-01-07 15:54:45 -0800
commite14411da420bad7bdaae65cccd8787674e6c565e (patch)
tree8ec2dca508a2e67f6dc4355b5dc7c4337a980be8 /arch/arm/mach-msm/headsmp.S
parent9f1890a5de2a5fcf4fd9ffa3115047eed834349c (diff)
msm: add SMP support for msm
Signed-off-by: Jeff Ohlstein <johlstei@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'arch/arm/mach-msm/headsmp.S')
-rw-r--r--arch/arm/mach-msm/headsmp.S40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/headsmp.S b/arch/arm/mach-msm/headsmp.S
new file mode 100644
index 00000000000..d0c214338df
--- /dev/null
+++ b/arch/arm/mach-msm/headsmp.S
@@ -0,0 +1,40 @@
+/*
+ * linux/arch/arm/mach-realview/headsmp.S
+ *
+ * Copyright (c) 2003 ARM Limited
+ * 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/linkage.h>
+#include <linux/init.h>
+
+ __INIT
+
+/*
+ * MSM specific entry point for secondary CPUs. This provides
+ * a "holding pen" into which all secondary cores are held until we're
+ * ready for them to initialise.
+ */
+ENTRY(msm_secondary_startup)
+ mrc p15, 0, r0, c0, c0, 5
+ and r0, r0, #15
+ adr r4, 1f
+ ldmia r4, {r5, r6}
+ sub r4, r4, r5
+ add r6, r6, r4
+pen: ldr r7, [r6]
+ cmp r7, r0
+ bne pen
+
+ /*
+ * we've been released from the holding pen: secondary_stack
+ * should now contain the SVC stack for this core
+ */
+ b secondary_startup
+
+ .align
+1: .long .
+ .long pen_release