powerpc/kconfig: define PAGE_SHIFT inside Kconfig
This patch defined CONFIG_PPC_PAGE_SHIFT in order to be able to use PAGE_SHIFT value inside Kconfig. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -704,6 +704,13 @@ config PPC_256K_PAGES
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endchoice
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config PPC_PAGE_SHIFT
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int
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default 18 if PPC_256K_PAGES
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default 16 if PPC_64K_PAGES
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default 14 if PPC_16K_PAGES
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default 12
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config THREAD_SHIFT
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int "Thread shift" if EXPERT
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range 13 15
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@ -20,20 +20,11 @@
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/*
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* On regular PPC32 page size is 4K (but we support 4K/16K/64K/256K pages
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* on PPC44x). For PPC64 we support either 4K or 64K software
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* on PPC44x and 4K/16K on 8xx). For PPC64 we support either 4K or 64K software
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* page size. When using 64K pages however, whether we are really supporting
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* 64K pages in HW or not is irrelevant to those definitions.
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*/
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#if defined(CONFIG_PPC_256K_PAGES)
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#define PAGE_SHIFT 18
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#elif defined(CONFIG_PPC_64K_PAGES)
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#define PAGE_SHIFT 16
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#elif defined(CONFIG_PPC_16K_PAGES)
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#define PAGE_SHIFT 14
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#else
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#define PAGE_SHIFT 12
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#endif
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#define PAGE_SHIFT CONFIG_PPC_PAGE_SHIFT
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#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
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#ifndef __ASSEMBLY__
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