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microblaze: Support 4k/16k/64k pages
Add support for page size which is supported by MMU. Remove 8k and 32k page size because they are not supported by MMU. Signed-off-by: Michal Simek <monstr@monstr.eu>
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@ -243,14 +243,11 @@ choice
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config MICROBLAZE_4K_PAGES
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bool "4k page size"
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config MICROBLAZE_8K_PAGES
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bool "8k page size"
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config MICROBLAZE_16K_PAGES
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bool "16k page size"
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config MICROBLAZE_32K_PAGES
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bool "32k page size"
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config MICROBLAZE_64K_PAGES
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bool "64k page size"
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endchoice
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@ -23,12 +23,10 @@
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#ifdef __KERNEL__
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/* PAGE_SHIFT determines the page size */
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#if defined(CONFIG_MICROBLAZE_32K_PAGES)
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#define PAGE_SHIFT 15
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#if defined(CONFIG_MICROBLAZE_64K_PAGES)
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#define PAGE_SHIFT 16
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#elif defined(CONFIG_MICROBLAZE_16K_PAGES)
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#define PAGE_SHIFT 14
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#elif defined(CONFIG_MICROBLAZE_8K_PAGES)
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#define PAGE_SHIFT 13
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#else
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#define PAGE_SHIFT 12
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#endif
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@ -862,7 +862,13 @@ ex_handler_done:
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* bits 20 and 21 are zero.
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*/
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andi r3, r3, PAGE_MASK
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#ifdef CONFIG_MICROBLAZE_64K_PAGES
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ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_64K)
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#elif CONFIG_MICROBLAZE_16K_PAGES
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ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_16K)
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#else
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ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_4K)
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#endif
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mts rtlbhi, r3 /* Load TLB HI */
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nop
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