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vmm: acpi: Support compiling ACPI code on aarch64

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This skeleton commit brings in the support for compiling aarch64 with
the "acpi" feature ready to the ACPI enabling. It builds on the work to
move the ACPI hotplug devices from I/O ports to MMIO and conditionalises
any code that is x86_64 only (i.e. because it uses an I/O port.)

Filling in the aarch64 specific details in tables such as the MADT it
out of the scope.

See: #2178

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2021-01-25 10:48:45 +00:00
committed by Michael
parent 7659055eec
commit 76e15a4240
4 changed files with 96 additions and 61 deletions
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72
vmm/src/cpu.rs
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@@ -22,8 +22,6 @@ use crate::CPU_MANAGER_SNAPSHOT_ID;
#[cfg(feature = "acpi")]
use acpi_tables::{aml, aml::Aml, sdt::SDT};
use anyhow::anyhow;
#[cfg(feature = "acpi")]
use arch::layout;
#[cfg(target_arch = "x86_64")]
use arch::x86_64::SgxEpcSection;
#[cfg(target_arch = "x86_64")]
@@ -1031,40 +1029,48 @@ impl CpuManager {
assert!(self.config.boot_vcpus <= self.config.max_vcpus);
let mut madt = SDT::new(*b"APIC", 44, 5, *b"CLOUDH", *b"CHMADT ", 1);
madt.write(36, layout::APIC_START);
#[cfg(target_arch = "x86_64")]
{
madt.write(36, arch::layout::APIC_START);
for cpu in 0..self.config.max_vcpus {
let lapic = LocalAPIC {
r#type: 0,
length: 8,
processor_id: cpu,
apic_id: cpu,
flags: if cpu < self.config.boot_vcpus {
1 << MADT_CPU_ENABLE_FLAG
} else {
0
},
};
madt.append(lapic);
for cpu in 0..self.config.max_vcpus {
let lapic = LocalAPIC {
r#type: 0,
length: 8,
processor_id: cpu,
apic_id: cpu,
flags: if cpu < self.config.boot_vcpus {
1 << MADT_CPU_ENABLE_FLAG
} else {
0
},
};
madt.append(lapic);
}
madt.append(IOAPIC {
r#type: 1,
length: 12,
ioapic_id: 0,
apic_address: arch::layout::IOAPIC_START.0 as u32,
gsi_base: 0,
..Default::default()
});
madt.append(InterruptSourceOverride {
r#type: 2,
length: 10,
bus: 0,
source: 4,
gsi: 4,
flags: 0,
});
}
madt.append(IOAPIC {
r#type: 1,
length: 12,
ioapic_id: 0,
apic_address: layout::IOAPIC_START.0 as u32,
gsi_base: 0,
..Default::default()
});
madt.append(InterruptSourceOverride {
r#type: 2,
length: 10,
bus: 0,
source: 4,
gsi: 4,
flags: 0,
});
#[cfg(target_arch = "aarch64")]
{
madt.update_checksum();
}
madt
}