diff options
Diffstat (limited to 'kernel/arch/arm/mach-exynos/headsmp.S')
| -rw-r--r-- | kernel/arch/arm/mach-exynos/headsmp.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-exynos/headsmp.S b/kernel/arch/arm/mach-exynos/headsmp.S new file mode 100644 index 000000000..b54f9701e --- /dev/null +++ b/kernel/arch/arm/mach-exynos/headsmp.S @@ -0,0 +1,40 @@ +/* + * + * Cloned from 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> + +/* + * exynos4 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(exynos4_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 +ENDPROC(exynos4_secondary_startup) + + .align 2 +1: .long . + .long pen_release |