RISC-V: Implement compile-time fixed mappings

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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: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>

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Anup Patel 2019-01-07 20:57:01 +05:30 • committed by Anup Patel

parent 6f1e9e946f

commit f2c17aabc9

3 changed files with 81 additions and 0 deletions

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3

arch/riscv/Kconfig

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44

arch/riscv/include/asm/fixmap.h

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34

arch/riscv/mm/init.c

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