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| author | Geoff Levand <geoffrey.levand@am.sony.com> | 2006-11-23 00:46:57 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-12-04 20:40:52 +1100 |
| commit | 261efc3f178c8c5b55d76208aee1f39ce247f723 (patch) | |
| tree | f460915b8ea9c334100188b06974c0a34316c981 | |
| parent | 2832a81df7f3cb7e7f912a256c156ddbd3450265 (diff) | |
| download | linux-261efc3f178c8c5b55d76208aee1f39ce247f723.tar.bz2 | |
[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: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
| -rw-r--r-- | arch/powerpc/platforms/ps3/Kconfig | 11 | ||||
| -rw-r--r-- | include/asm-powerpc/sparsemem.h | 6 |
2 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig index f023719f6459..451bfcd5502e 100644 --- a/arch/powerpc/platforms/ps3/Kconfig +++ b/arch/powerpc/platforms/ps3/Kconfig @@ -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 diff --git a/include/asm-powerpc/sparsemem.h b/include/asm-powerpc/sparsemem.h index 38b1ea3b58fd..48ad807a0b8a 100644 --- a/include/asm-powerpc/sparsemem.h +++ b/include/asm-powerpc/sparsemem.h @@ -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); |