diff options
author | Eric Biederman <ebiederm@xmission.com> | 2004-10-14 20:13:01 +0000 |
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committer | Eric Biederman <ebiederm@xmission.com> | 2004-10-14 20:13:01 +0000 |
commit | c84c1906b78b767902bf9d8f18ae8a21d2f1f114 (patch) | |
tree | 136d8ed19f4cc487e5b7d01416aaab3810ee6659 /src/include/cpu/x86/cache.h | |
parent | b84166e8e53476f1ef4d49aca17f99d303b4aa67 (diff) |
- Renamed cpu header files
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1659 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/include/cpu/x86/cache.h')
-rw-r--r-- | src/include/cpu/x86/cache.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/include/cpu/x86/cache.h b/src/include/cpu/x86/cache.h new file mode 100644 index 0000000000..623ef971ce --- /dev/null +++ b/src/include/cpu/x86/cache.h @@ -0,0 +1,48 @@ +#ifndef CPU_X86_CACHE +#define CPU_X86_CACHE + +static inline unsigned long read_cr0(void) +{ + unsigned long cr0; + asm volatile ("movl %%cr0, %0" : "=r" (cr0)); + return cr0; +} + +static inline void write_cr0(unsigned long cr0) +{ + asm volatile ("movl %0, %%cr0" : : "r" (cr0)); +} + +static inline void invd(void) +{ + asm volatile("invd" ::: "memory"); +} +static inline void wbinvd(void) +{ + asm volatile ("wbinvd"); +} + +static inline void enable_cache(void) +{ + unsigned long cr0; + cr0 = read_cr0(); + cr0 &= 0x9fffffff; + write_cr0(cr0); +} + +static inline void disable_cache(void) +{ + /* Disable and write back the cache */ + unsigned long cr0; + cr0 = read_cr0(); + cr0 |= 0x40000000; + wbinvd(); + write_cr0(cr0); + wbinvd(); +} + +#ifndef __ROMCC__ +void x86_enable_cache(void); +#endif /* !__ROMCC__ */ + +#endif /* CPU_X86_CACHE */ |