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xtensa: rework noMMU cache attributes initialization

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Marking default memory region as cached is not always sufficient and is
not flexible. Allow specifying cache attributes for the whole memory
address space with new config entry MEMMAP_CACHEATTR. Apply it after
cache initialization.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov
2018-08-12 06:01:40 -07:00
parent fec3259c9f
commit 7bb516ca54
4 changed files with 42 additions and 22 deletions
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1
arch/xtensa/configs/nommu_kc705_defconfig
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@@ -33,6 +33,7 @@ CONFIG_XTENSA_VARIANT_CUSTOM_NAME="de212"
# CONFIG_XTENSA_VARIANT_MMU is not set
CONFIG_XTENSA_UNALIGNED_USER=y
CONFIG_PREEMPT=y
CONFIG_MEMMAP_CACHEATTR=0xfff2442f
# CONFIG_PCI is not set
CONFIG_XTENSA_PLATFORM_XTFPGA=y
CONFIG_CMDLINE_BOOL=y