aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S')
-rw-r--r--target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S42
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S b/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S
new file mode 100644
index 0000000000..456fd67f97
--- /dev/null
+++ b/target/linux/cns3xxx/files/arch/arm/mach-cns3xxx/headsmp.S
@@ -0,0 +1,42 @@
+/*
+ * linux/arch/arm/mach-cns3xxx/headsmp.S
+ *
+ * Cloned from linux/arch/arm/plat-versatile/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
+
+/*
+ * CNS3XXX 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(cns3xxx_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