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Commit 261efc3f authored by Geoff Levand's avatar Geoff Levand Committed by Paul Mackerras
Browse files

[POWERPC] ps3: add lpar addressing 



Adds some needed bits for a config option PS3_USE_LPAR_ADDR that disables
the PS3 lpar address translation mechanism.  This is a currently needed
workaround for limitations in the design of the generic cell spu support.

Signed-off-by: default avatarGeoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: default avatarArnd Bergmann <arnd.bergmann@de.ibm.com>
parent 2832a81d

arch/powerpc/platforms/ps3/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -29,4 +29,15 @@ config PS3_DYNAMIC_DMA 
	  This support is mainly for Linux kernel development.  If unsure,

	  say N.



config PS3_USE_LPAR_ADDR

	depends on PPC_PS3 && EXPERIMENTAL

	bool "PS3 use lpar address space"

	default y

	help

	  This option is solely for experimentation by experts.  Disables

	  translation of lpar addresses.  SPE support currently won't work

	  without this set to y.



	  If you have any doubt, choose the default y.



endmenu

include/asm-powerpc/sparsemem.h

+6 −0
Original line number Diff line number Diff line
@@ -9,8 +9,14 @@ 
 * MAX_PHYSMEM_BITS		2^N: how much memory we can have in that space

 */

#define SECTION_SIZE_BITS       24



#if defined(CONFIG_PS3_USE_LPAR_ADDR)

#define MAX_PHYSADDR_BITS       47

#define MAX_PHYSMEM_BITS        47

#else

#define MAX_PHYSADDR_BITS       44

#define MAX_PHYSMEM_BITS        44

#endif



#ifdef CONFIG_MEMORY_HOTPLUG

extern void create_section_mapping(unsigned long start, unsigned long end);