forked from Minki/linux
a0ab36689a
This introduces some much overdue chainsawing of the fixed PMB support. fixed PMB was introduced initially to work around the fact that dynamic PMB mode was relatively broken, though they were never intended to converge. The main areas where there are differences are whether the system is booted in 29-bit mode or 32-bit mode, and whether legacy mappings are to be preserved. Any system booting in true 32-bit mode will not care about legacy mappings, so these are roughly decoupled. Regardless of the entry point, PMB and 32BIT are directly related as far as the kernel is concerned, so we also switch back to having one select the other. With legacy mappings iterated through and applied in the initialization path it's now possible to finally merge the two implementations and permit dynamic remapping overtop of remaining entries regardless of whether boot mappings are crafted by hand or inherited from the boot loader. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
65 lines
2.2 KiB
Makefile
65 lines
2.2 KiB
Makefile
#
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# Makefile for the Linux SuperH-specific parts of the memory manager.
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#
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obj-y := alignment.o cache.o init.o consistent.o mmap.o
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cacheops-$(CONFIG_CPU_SH2) := cache-sh2.o
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cacheops-$(CONFIG_CPU_SH2A) := cache-sh2a.o
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cacheops-$(CONFIG_CPU_SH3) := cache-sh3.o
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cacheops-$(CONFIG_CPU_SH4) := cache-sh4.o flush-sh4.o
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cacheops-$(CONFIG_CPU_SH5) := cache-sh5.o flush-sh4.o
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cacheops-$(CONFIG_SH7705_CACHE_32KB) += cache-sh7705.o
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obj-y += $(cacheops-y)
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mmu-y := nommu.o extable_32.o
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mmu-$(CONFIG_MMU) := extable_$(BITS).o fault_$(BITS).o \
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ioremap_$(BITS).o kmap.o pgtable.o tlbflush_$(BITS).o
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obj-y += $(mmu-y)
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obj-$(CONFIG_DEBUG_FS) += asids-debugfs.o
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ifdef CONFIG_DEBUG_FS
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obj-$(CONFIG_CPU_SH4) += cache-debugfs.o
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endif
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ifdef CONFIG_MMU
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tlb-$(CONFIG_CPU_SH3) := tlb-sh3.o
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tlb-$(CONFIG_CPU_SH4) := tlb-sh4.o
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tlb-$(CONFIG_CPU_SH5) := tlb-sh5.o
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tlb-$(CONFIG_CPU_HAS_PTEAEX) := tlb-pteaex.o
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obj-y += $(tlb-y)
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endif
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obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
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obj-$(CONFIG_PMB) += pmb.o
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obj-$(CONFIG_NUMA) += numa.o
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# Special flags for fault_64.o. This puts restrictions on the number of
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# caller-save registers that the compiler can target when building this file.
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# This is required because the code is called from a context in entry.S where
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# very few registers have been saved in the exception handler (for speed
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# reasons).
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# The caller save registers that have been saved and which can be used are
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# r2,r3,r4,r5 : argument passing
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# r15, r18 : SP and LINK
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# tr0-4 : allow all caller-save TR's. The compiler seems to be able to make
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# use of them, so it's probably beneficial to performance to save them
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# and have them available for it.
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#
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# The resources not listed below are callee save, i.e. the compiler is free to
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# use any of them and will spill them to the stack itself.
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CFLAGS_fault_64.o += -ffixed-r7 \
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-ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12 \
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-ffixed-r13 -ffixed-r14 -ffixed-r16 -ffixed-r17 -ffixed-r19 \
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-ffixed-r20 -ffixed-r21 -ffixed-r22 -ffixed-r23 \
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-ffixed-r24 -ffixed-r25 -ffixed-r26 -ffixed-r27 \
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-ffixed-r36 -ffixed-r37 -ffixed-r38 -ffixed-r39 -ffixed-r40 \
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-ffixed-r41 -ffixed-r42 -ffixed-r43 \
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-ffixed-r60 -ffixed-r61 -ffixed-r62 \
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-fomit-frame-pointer
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EXTRA_CFLAGS += -Werror
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