mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
synced 2025-03-20 07:58:55 +00:00
183529d024
Remove unnecessary parentheses from code and this will cleanup the warning from cargo build. Signed-off-by: Yang Zhong <yang.zhong@intel.com>
104 lines
3.6 KiB
Rust
104 lines
3.6 KiB
Rust
// Copyright © 2020, Oracle and/or its affiliates.
|
|
//
|
|
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE-BSD-3-Clause file.
|
|
|
|
use vm_memory::{GuestAddress, GuestUsize};
|
|
|
|
/*
|
|
|
|
Memory layout documentation and constants
|
|
~~~~~~ ~~~~~~ ~~~~~~~~~~~~~ ~~~ ~~~~~~~~~
|
|
|
|
Constants are in order and grouped by range. Take care to update all references
|
|
when making changes and keep them in order.
|
|
|
|
*/
|
|
|
|
// ** Low RAM (start: 0, length: 640KiB) **
|
|
pub const LOW_RAM_START: GuestAddress = GuestAddress(0x0);
|
|
|
|
// == Fixed addresses within the "Low RAM" range: ==
|
|
|
|
// Initial GDT/IDT needed to boot kernel
|
|
pub const BOOT_GDT_START: GuestAddress = GuestAddress(0x500);
|
|
pub const BOOT_IDT_START: GuestAddress = GuestAddress(0x520);
|
|
|
|
/// Address for the hvm_start_info struct used in PVH boot
|
|
pub const PVH_INFO_START: GuestAddress = GuestAddress(0x6000);
|
|
|
|
/// Address of memory map table used in PVH boot. Can overlap
|
|
/// with the zero page address since they are mutually exclusive.
|
|
pub const MEMMAP_START: GuestAddress = GuestAddress(0x7000);
|
|
|
|
/// The 'zero page', a.k.a linux kernel bootparams.
|
|
pub const ZERO_PAGE_START: GuestAddress = GuestAddress(0x7000);
|
|
|
|
/// Initial stack for the boot CPU.
|
|
pub const BOOT_STACK_START: GuestAddress = GuestAddress(0x8000);
|
|
pub const BOOT_STACK_POINTER: GuestAddress = GuestAddress(0x8ff0);
|
|
|
|
// Initial pagetables.
|
|
pub const PML4_START: GuestAddress = GuestAddress(0x9000);
|
|
pub const PDPTE_START: GuestAddress = GuestAddress(0xa000);
|
|
pub const PDE_START: GuestAddress = GuestAddress(0xb000);
|
|
|
|
/// Kernel command line start address.
|
|
pub const CMDLINE_START: GuestAddress = GuestAddress(0x20000);
|
|
/// Kernel command line start address maximum size.
|
|
pub const CMDLINE_MAX_SIZE: usize = 0x10000;
|
|
|
|
// MPTABLE, describing VCPUS.
|
|
pub const MPTABLE_START: GuestAddress = GuestAddress(0x9fc00);
|
|
|
|
// == End of "Low RAM" range. ==
|
|
|
|
// ** EBDA reserved area (start: 640KiB, length: 384KiB) **
|
|
pub const EBDA_START: GuestAddress = GuestAddress(0xa0000);
|
|
|
|
// == Fixed constants within the "EBDA" range ==
|
|
|
|
// ACPI RSDP table
|
|
pub const RSDP_POINTER: GuestAddress = EBDA_START;
|
|
|
|
// == End of "EBDA" range ==
|
|
|
|
// ** High RAM (start: 1MiB, length: 3071MiB) **
|
|
pub const HIGH_RAM_START: GuestAddress = GuestAddress(0x100000);
|
|
|
|
// == No fixed addresses in the "High RAM" range ==
|
|
|
|
// ** 32-bit reserved area (start: 3GiB, length: 1GiB) **
|
|
pub const MEM_32BIT_RESERVED_START: GuestAddress = GuestAddress(0xc000_0000);
|
|
pub const MEM_32BIT_RESERVED_SIZE: GuestUsize = 1024 << 20;
|
|
|
|
// == Fixed constants within the "32-bit reserved" range ==
|
|
|
|
// Sub range: 32-bit PCI devices (start: 3GiB, length: 640Mib)
|
|
pub const MEM_32BIT_DEVICES_START: GuestAddress = MEM_32BIT_RESERVED_START;
|
|
pub const MEM_32BIT_DEVICES_SIZE: GuestUsize = 640 << 20;
|
|
|
|
// PCI MMCONFIG space (start: after the device space, length: 256MiB)
|
|
pub const PCI_MMCONFIG_START: GuestAddress =
|
|
GuestAddress(MEM_32BIT_DEVICES_START.0 + MEM_32BIT_DEVICES_SIZE);
|
|
pub const PCI_MMCONFIG_SIZE: GuestUsize = 256 << 20;
|
|
|
|
// IOAPIC
|
|
pub const IOAPIC_START: GuestAddress = GuestAddress(0xfec0_0000);
|
|
pub const IOAPIC_SIZE: GuestUsize = 0x20;
|
|
|
|
// APIC
|
|
pub const APIC_START: GuestAddress = GuestAddress(0xfee0_0000);
|
|
|
|
/// Address for the TSS setup.
|
|
pub const KVM_TSS_ADDRESS: GuestAddress = GuestAddress(0xfffb_d000);
|
|
|
|
// == End of "32-bit reserved" range. ==
|
|
|
|
// ** 64-bit RAM start (start: 4GiB, length: varies) **
|
|
pub const RAM_64BIT_START: GuestAddress = GuestAddress(0x1_0000_0000);
|