RISC-V: ACPI: Enhance acpi_os_ioremap with MMIO remapping

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Enhance the acpi_os_ioremap() to support opregions in MMIO space. Also,
have strict checks using EFI memory map to allow remapping the RAM similar
to arm64.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20231018124007.1306159-2-sunilvl@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Sunil V L 2023-10-18 18:10:04 +05:30 • committed by Palmer Dabbelt

parent 0bb80ecc33

commit e8065df5b0

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arch/riscv/Kconfig

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89

arch/riscv/kernel/acpi.c

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