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| author | Jarkko Sakkinen <jarkko.sakkinen@intel.com> | 2012-05-08 20:22:26 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-05-08 20:41:49 +0200 |
| commit | 084ee1c641a068bfd1194d545f7dc9ab2043eb35 (patch) | |
| tree | bc5454aedede17313df04eb82d354a76d14ee284 /arch/x86/include/asm/realmode.h | |
| parent | x86, realmode: realmode.bin infrastructure (diff) | |
| download | linux-084ee1c641a068bfd1194d545f7dc9ab2043eb35.tar.xz linux-084ee1c641a068bfd1194d545f7dc9ab2043eb35.zip | |
x86, realmode: Relocator for realmode code
Implements relocator for real mode code that is called
as part of setup_arch(). Processes segment relocations
and linear relocations. Real-mode code is relocated to
a free hole below 1 MB.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-4-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/realmode.h')
| -rw-r--r-- | arch/x86/include/asm/realmode.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h new file mode 100644 index 000000000000..dc1bba534c14 --- /dev/null +++ b/arch/x86/include/asm/realmode.h @@ -0,0 +1,26 @@ +#ifndef _ARCH_X86_REALMODE_H +#define _ARCH_X86_REALMODE_H + +#include <linux/types.h> +#include <asm/io.h> + +/* This must match data at realmode.S */ +struct real_mode_header { + u32 text_start; + u32 ro_end; + u32 end; +} __attribute__((__packed__)); + +extern struct real_mode_header real_mode_header; +extern unsigned char *real_mode_base; + +extern unsigned long init_rsp; +extern unsigned long initial_code; +extern unsigned long initial_gs; + +extern unsigned char real_mode_blob[]; +extern unsigned char real_mode_relocs[]; + +extern void __init setup_real_mode(void); + +#endif /* _ARCH_X86_REALMODE_H */ |