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acpi: AArch64: Enable PSCI in FADT

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This commit enables the PSCI (Power State Coordination Interface)
for the AArch64 platform, which allows the VMM to manage the power
status of the guest. Also, multiple vCPUs can be brought up using
PSCI.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit is contained in:
Henry Wang 2021-02-18 16:35:03 +08:00 committed by Sebastien Boeuf
parent d882f8c928
commit efc583c13e
1 changed files with 5 additions and 0 deletions
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5
vmm/src/acpi.rs
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@ -145,6 +145,11 @@ fn create_facp_table(dsdt_offset: GuestAddress) -> Sdt {
facp.write(256, GenericAddress::io_port_address::<u8>(0x3c0));
}
// aarch64 specific fields
#[cfg(target_arch = "aarch64")]
// ARM_BOOT_ARCH: enable PSCI with HVC enable-method
facp.write(129, 3u16);
// Architecture common fields
// HW_REDUCED_ACPI, RESET_REG_SUP, TMR_VAL_EXT
let fadt_flags: u32 = 1 << 20 | 1 << 10 | 1 << 8;