diff options
| author | Michael J. Chudobiak <mjc@avtechpulse.com> | 2016-04-25 10:00:44 -0400 |
|---|---|---|
| committer | Michael J. Chudobiak <mjc@avtechpulse.com> | 2016-04-25 10:00:44 -0400 |
| commit | a1df417e74aa6dae7352dc8cbb0ad471af5b7c69 (patch) | |
| tree | c34b2311e37ea31db153c90cb8f4570374d05e78 /linux/arch/arm/mach-exynos/headsmp.S | |
initial Olimex linux tree from Daniel, originally Feb 3, 2016
Diffstat (limited to 'linux/arch/arm/mach-exynos/headsmp.S')
| -rw-r--r-- | linux/arch/arm/mach-exynos/headsmp.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/linux/arch/arm/mach-exynos/headsmp.S b/linux/arch/arm/mach-exynos/headsmp.S new file mode 100644 index 00000000..b54f9701 --- /dev/null +++ b/linux/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 |