RISC-V: Implement compile-time fixed mappings
This patch implements compile-time virtual to physical mappings. These compile-time fixed mappings can be used by earlycon, ACPI, and early ioremap for creating fixed mappings when FIX_EARLYCON_MEM=y. To start with, we have enabled compile-time fixed mappings for earlycon. Signed-off-by: NAnup Patel <anup.patel@wdc.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NPalmer Dabbelt <palmer@sifive.com>
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arch/riscv/include/asm/fixmap.h
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