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[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>
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@ -29,4 +29,15 @@ config PS3_DYNAMIC_DMA
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This support is mainly for Linux kernel development. If unsure,
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say N.
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config PS3_USE_LPAR_ADDR
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depends on PPC_PS3 && EXPERIMENTAL
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bool "PS3 use lpar address space"
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default y
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help
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This option is solely for experimentation by experts. Disables
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translation of lpar addresses. SPE support currently won't work
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without this set to y.
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If you have any doubt, choose the default y.
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endmenu
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@ -9,8 +9,14 @@
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* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
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*/
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#define SECTION_SIZE_BITS 24
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#if defined(CONFIG_PS3_USE_LPAR_ADDR)
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#define MAX_PHYSADDR_BITS 47
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#define MAX_PHYSMEM_BITS 47
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#else
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#define MAX_PHYSADDR_BITS 44
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#define MAX_PHYSMEM_BITS 44
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#endif
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#ifdef CONFIG_MEMORY_HOTPLUG
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extern void create_section_mapping(unsigned long start, unsigned long end);
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