Anshul Dalal 856480eef0
arm: armv8: mmu: add mmu_unmap_reserved_mem ...
For armv8, U-Boot uses a static map defined as 'mem_map' for configuring
the MMU's page tables, done by mmu_setup.
Though this works well for simpler platforms, it makes creating runtime
carveouts by modifying the static array at runtime exceedingly complex
like in mach-snapdragon/board.c.
Creation of such carveouts are much better handled by APIs such as
mmu_change_region_attr once the page tables are configured. Usually such
carveouts are configured via the device-tree's reserved-memory node
which provides the address and size for the carveout.
Therefore this patch adds mmu_unmap_reserved_mem which acts as a wrapper
over mmu_change_region_attr, helping unmap a reserved-memory region.
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org >
Signed-off-by: Anshul Dalal <anshuld@ti.com >
Tested-by: Wadim Egorov <w.egorov@phytec.de >
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856480eef0