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[POWERPC] ps3: add lpar addressing

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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: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This commit is contained in:
Geoff Levand 2006-11-23 00:46:57 +01:00 committed by Paul Mackerras
parent 2832a81df7
commit 261efc3f17
2 changed files with 17 additions and 0 deletions
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11
arch/powerpc/platforms/ps3/Kconfig
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@ -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

6
include/asm-powerpc/sparsemem.h
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@ -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);