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author | Tsahee Zidenberg <tsahee@annapurnalabs.com> | 2015-03-12 14:53:06 +0300 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2015-03-16 17:24:12 +0300 |
commit | e9e06f2853dd86791e665b2aa3c8acb5b0007e07 (patch) | |
tree | 8ee22e89f2e01f9442cfecd9b2608851526f2b98 /arch/arm/mach-alpine/alpine_cpu_resume.h | |
parent | 3c215e64eb00f1ea5c67de2141ba816cb3f3c682 (diff) | |
download | linux-e9e06f2853dd86791e665b2aa3c8acb5b0007e07.tar.xz |
ARM: Alpine: smp support
This patch introduces support for waking up secondary CPU cores on
Alpine platform.
Signed-off-by: Barak Wasserstrom <barak@annapurnalabs.com>
Signed-off-by: Tsahee Zidenberg <tsahee@annapurnalabs.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-alpine/alpine_cpu_resume.h')
-rw-r--r-- | arch/arm/mach-alpine/alpine_cpu_resume.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-alpine/alpine_cpu_resume.h b/arch/arm/mach-alpine/alpine_cpu_resume.h new file mode 100644 index 000000000000..c80150c0d2d8 --- /dev/null +++ b/arch/arm/mach-alpine/alpine_cpu_resume.h @@ -0,0 +1,38 @@ +/* + * Annapurna labs cpu-resume register structure. + * + * Copyright (C) 2015 Annapurna Labs Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef ALPINE_CPU_RESUME_H_ +#define ALPINE_CPU_RESUME_H_ + +/* Per-cpu regs */ +struct al_cpu_resume_regs_per_cpu { + uint32_t flags; + uint32_t resume_addr; +}; + +/* general regs */ +struct al_cpu_resume_regs { + /* Watermark for validating the CPU resume struct */ + uint32_t watermark; + uint32_t flags; + struct al_cpu_resume_regs_per_cpu per_cpu[]; +}; + +/* The expected magic number for validating the resume addresses */ +#define AL_CPU_RESUME_MAGIC_NUM 0xf0e1d200 +#define AL_CPU_RESUME_MAGIC_NUM_MASK 0xffffff00 + +#endif /* ALPINE_CPU_RESUME_H_ */ |