arm: zynq: Add smp support
Zynq is dual core Cortex A9 which starts always
at zero. Using simple trampoline ensure long jump
to secondary_startup code.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
diff --git a/arch/arm/mach-zynq/headsmp.S b/arch/arm/mach-zynq/headsmp.S
new file mode 100644
index 0000000..d183cd2
--- /dev/null
+++ b/arch/arm/mach-zynq/headsmp.S
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2013 Steffen Trumtrar <s.trumtrar@pengutronix.de>
+ * Copyright (c) 2012-2013 Xilinx
+ *
+ * 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>
+
+ __CPUINIT
+
+ENTRY(zynq_secondary_trampoline)
+ ldr r0, [pc]
+ bx r0
+.globl zynq_secondary_trampoline_jump
+zynq_secondary_trampoline_jump:
+ /* Space for jumping address */
+ .word /* cpu 1 */
+.globl zynq_secondary_trampoline_end
+zynq_secondary_trampoline_end:
+
+ENDPROC(zynq_secondary_trampoline)