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| author |   GuanXuetao <gxt@mprc.pku.edu.cn> | 2011-01-15 18:15:01 +0800 |
|---|---|---|
| committer | GuanXuetao <gxt@mprc.pku.edu.cn> | 2011-03-17 09:19:06 +0800 |
| commit | 79725df5786d2fa48f582b116ea1d74193cc96ca (patch) | |
| tree | f617d939932294048eb448649066f0d248987411 /arch/unicore32/include/asm/cputype.h | |
| parent | unicore32 core architecture: generic elf and ksyms stuff (diff) | |
| download | linux-dev-79725df5786d2fa48f582b116ea1d74193cc96ca.tar.xz linux-dev-79725df5786d2fa48f582b116ea1d74193cc96ca.zip | |
unicore32 core architecture: processor and system headers
This patch includes processor and system headers. System call interface is here.
We used the syscall interface the same as asm-generic version.
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/unicore32/include/asm/cputype.h')
| -rw-r--r-- | arch/unicore32/include/asm/cputype.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/cputype.h b/arch/unicore32/include/asm/cputype.h new file mode 100644 index 000000000000..ec1a30f98077 --- /dev/null +++ b/arch/unicore32/include/asm/cputype.h @@ -0,0 +1,33 @@ +/* + * linux/arch/unicore32/include/asm/cputype.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_CPUTYPE_H__ +#define __UNICORE_CPUTYPE_H__ + +#include <linux/stringify.h> + +#define CPUID_CPUID 0 +#define CPUID_CACHETYPE 1 + +#define read_cpuid(reg) \ + ({ \ + unsigned int __val; \ + asm("movc %0, p0.c0, #" __stringify(reg) \ + : "=r" (__val) \ + : \ + : "cc"); \ + __val; \ + }) + +#define uc32_cpuid read_cpuid(CPUID_CPUID) +#define uc32_cachetype read_cpuid(CPUID_CACHETYPE) + +#endif |