diff options
| author | Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> | 2009-11-28 08:17:18 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-11-28 10:22:52 +0000 |
| commit | aa44ef4d43b200c0e318ade2a3c24d00a6fd942a (patch) | |
| tree | 259b92c5ac721b0d5aa24186fcde9a22572c6a3c /arch/arm/mach-ux500/headsmp.S | |
| parent | c6b503caef9abefb2e90ac83f672b75dc14bacd0 (diff) | |
ARM: 5831/1: ARM: U8500 core machine support
Adds core support for the ST-Ericsson U8500
platform. It supports memory mappings, binds to
the existing modules like GIC, SCU, TWD and
local timers and sets up the infrastructure for
the secondary core.
Reviewed-by: Alessandro Rubini <rubini@unipv.it>
Reviewed-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ux500/headsmp.S')
| -rw-r--r-- | arch/arm/mach-ux500/headsmp.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/headsmp.S b/arch/arm/mach-ux500/headsmp.S new file mode 100644 index 000000000000..a6be2cdf2b2f --- /dev/null +++ b/arch/arm/mach-ux500/headsmp.S @@ -0,0 +1,38 @@ +/* + * Copyright (c) 2009 ST-Ericsson + * This file is based ARM Realview platform + * 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 + +/* + * U8500 specific entry point for secondary CPUs. + */ +ENTRY(u8500_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 + dsb +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 + +1: .long . + .long pen_release |