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Commit f7a84915 authored by Atsushi Nemoto's avatar Atsushi Nemoto Committed by Ralf Baechle
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[MIPS] Fix FIXADDR_TOP for TX39/TX49. 



FIXADDR_TOP is used for HIGHMEM and for upper limit of vmalloc area on
32bit kernel.  TX39XX and TX49XX have "reserved" segment in CKSEG3
area.  0xff000000-0xff3fffff on TX49XX and 0xff000000-0xfffeffff on
TX39XX are reserved (unmapped, uncached) therefore can not be used as
mapped area.

Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 6feb6efa

include/asm-mips/fixmap.h

+4 −0
Original line number Diff line number Diff line
@@ -69,7 +69,11 @@ extern void __set_fixmap (enum fixed_addresses idx, 
 * the start of the fixmap, and leave one page empty

 * at the top of mem..

 */

#if defined(CONFIG_CPU_TX39XX) || defined(CONFIG_CPU_TX49XX)

#define FIXADDR_TOP	(0xff000000UL - 0x2000)

#else

#define FIXADDR_TOP	(0xffffe000UL)

#endif

#define FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)

#define FIXADDR_START	(FIXADDR_TOP - FIXADDR_SIZE)