linux/Documentation/x86
H. Peter Anvin 5031296c57 x86: add extension fields for bootloader type and version
A long ago, in days of yore, it all began with a god named Thor.
There were vikings and boats and some plans for a Linux kernel
header.  Unfortunately, a single 8-bit field was used for bootloader
type and version.  This has generally worked without *too* much pain,
but we're getting close to flat running out of ID fields.

Add extension fields for both type and version.  The type will be
extended if it the old field is 0xE; the version is a simple MSB
extension.

Keep /proc/sys/kernel/bootloader_type containing
(type << 4) + (ver & 0xf) for backwards compatiblity, but also add
/proc/sys/kernel/bootloader_version which contains the full version
number.

[ Impact: new feature to support more bootloaders ]

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-05-11 17:45:06 -07:00
..
i386 x86: doc: move x86-generic documentation from Doc/x86/i386 2008-07-22 15:34:38 -04:00
x86_64 trivial: fix where cgroup documentation is not correctly referred to 2009-03-30 15:22:02 +02:00
00-INDEX documentation: move mtrr.txt to Doc/x86/ subdir 2008-07-28 14:46:49 +02:00
boot.txt x86: add extension fields for bootloader type and version 2009-05-11 17:45:06 -07:00
earlyprintk.txt x86/doc: mini-howto for using earlyprintk=dbgp 2009-03-05 10:57:52 +01:00
mtrr.txt documentation: move mtrr.txt to Doc/x86/ subdir 2008-07-28 14:46:49 +02:00
pat.txt x86: PAT: pfnmap documentation update changes 2008-12-19 15:40:31 -08:00
usb-legacy-support.txt x86: doc: move x86-generic documentation from Doc/x86/i386 2008-07-22 15:34:38 -04:00
zero-page.txt documentation: update header file paths 2009-01-06 15:59:28 -08:00