linux/Documentation/x86
Andres Salomon fd699c7655 x86, olpc: Add support for calling into OpenFirmware
Add support for saving OFW's cif, and later calling into it to run OFW
commands.  OFW remains resident in memory, living within virtual range
0xff800000 - 0xffc00000.  A single page directory entry points to the
pgdir that OFW actually uses, so rather than saving the entire page
table, we grab and install that one entry permanently in the kernel's
page table.

This is currently only used by the OLPC XO.  Note that this particular
calling convention breaks PAE and PAT, and so cannot be used on newer
x86 hardware.

Signed-off-by: Andres Salomon <dilinger@queued.net>
LKML-Reference: <20100618174653.7755a39a@dev.queued.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2010-06-18 14:54:36 -07:00
..
i386 x86: doc: move x86-generic documentation from Doc/x86/i386 2008-07-22 15:34:38 -04:00
x86_64 x86, numa: Remove configurable node size support for numa emulation 2010-02-15 14:34:18 -08:00
00-INDEX Doc: move Documentation/exception.txt into x86 subdir 2009-07-10 19:10:32 -07:00
boot.txt x86: Add hardware_subarch ID for Moorestown 2009-08-31 11:09:40 +02:00
earlyprintk.txt USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp 2009-09-23 06:46:39 -07:00
exception-tables.txt Doc: move Documentation/exception.txt into x86 subdir 2009-07-10 19:10:32 -07:00
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 x86, olpc: Add support for calling into OpenFirmware 2010-06-18 14:54:36 -07:00