diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@intel.com> | 2012-05-08 21:22:25 +0300 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-05-08 11:41:48 -0700 |
| commit | b3266bd6ff52efb9e57c7fbfff4c8f7363dfaab3 (patch) | |
| tree | 66f16447ee345e21372fe0fe35b987b16c8061c0 /arch/x86/realmode/rm/header.S | |
| parent | 433de739bbc22a5b2c87602116566ce27e3b4cab (diff) | |
| download | linux-b3266bd6ff52efb9e57c7fbfff4c8f7363dfaab3.tar.bz2 | |
x86, realmode: realmode.bin infrastructure
Create realmode.bin and realmode.relocs files. Piggy
pack them into relocatable object that will be included
into .init.data section of the main kernel image.
The first file includes binary image of the real-mode code.
The latter file includes all relocations. The layout of the
binary image is specified in realmode.lds.S. The makefile
generates pa_ prefixed symbols for each exported global.
These are used in 32-bit code and in realmode header to
define symbols that need to be relocated.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-3-git-send-email-jarkko.sakkinen@intel.com
Originally-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/realmode/rm/header.S')
| -rw-r--r-- | arch/x86/realmode/rm/header.S | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S new file mode 100644 index 000000000000..7be17f2c65a3 --- /dev/null +++ b/arch/x86/realmode/rm/header.S @@ -0,0 +1,16 @@ +/* + * Real-mode blob header; this should match realmode.h and be + * readonly; for mutable data instead add pointers into the .data + * or .bss sections as appropriate. + */ + +#include <linux/linkage.h> +#include <asm/page_types.h> + + .section ".header", "a" + +ENTRY(real_mode_header) + .long pa_text_start + .long pa_ro_end + .long pa_end +END(real_mode_header) |