Commit 36bcd39d authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: Split out 29-bit and 32-bit physical mode definitions. 



Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent af3c7dfe

arch/sh/mm/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -46,9 +46,20 @@ config MEMORY_SIZE 
	  as 0x00400000 which was the default value before this became

	  configurable.



# Physical addressing modes



config 29BIT

	def_bool !32BIT

	depends on SUPERH32



config 32BIT

	bool

	default y if CPU_SH5



config PMB

	bool "Support 32-bit physical addressing through PMB"

	depends on MMU && (CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785)

	select 32BIT

	default y

	help

	  If you say Y here, physical addressing will be extended to

arch/sh/mm/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ endif 
endif



obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o

obj-$(CONFIG_32BIT)		+= pmb.o

obj-$(CONFIG_PMB)		+= pmb.o

obj-$(CONFIG_NUMA)		+= numa.o



EXTRA_CFLAGS += -Werror

include/asm-sh/pgtable.h

+17 −0
Original line number Diff line number Diff line
@@ -28,6 +28,23 @@ extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; 


#endif /* !__ASSEMBLY__ */



/*

 * Effective and physical address definitions, to aid with sign

 * extension.

 */

#define NEFF		32

#define	NEFF_SIGN	(1LL << (NEFF - 1))

#define	NEFF_MASK	(-1LL << NEFF)



#ifdef CONFIG_29BIT

#define NPHYS		29

#else

#define NPHYS		32

#endif



#define	NPHYS_SIGN	(1LL << (NPHYS - 1))

#define	NPHYS_MASK	(-1LL << NPHYS)



/*

 * traditional two-level paging structure

 */