129 lines
5.0 KiB
C
129 lines
5.0 KiB
C
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//
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// Copyright (C) 2022 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <utility>
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#include <optional>
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#include <string>
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#include <vector>
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#include "host/libs/config/cuttlefish_config.h"
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#include "common/libs/utils/environment.h"
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namespace cuttlefish {
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// For licensing and build reproducibility reasons, pick up the bootloaders
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// from the host Linux distribution (if present) and pack them into the
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// automatically generated ESP. If the user wants their own bootloaders,
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// they can use -esp_image=/path/to/esp.img to override, so we don't need
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// to accommodate customizations of this packing process.
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// Currently we only support Debian based distributions, and GRUB is built
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// for those distros to always load grub.cfg from EFI/debian/grub.cfg, and
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// nowhere else. If you want to add support for other distros, make the
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// extra directories below and copy the initial grub.cfg there as well
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//
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// Currently the Cuttlefish bootloaders are built only for x86 (32-bit),
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// ARM (QEMU only, 32-bit) and AArch64 (64-bit), and U-Boot will hard-code
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// these search paths. Install all bootloaders to one of these paths.
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// NOTE: For now, just ignore the 32-bit ARM version, as Debian doesn't
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// build an EFI monolith for this architecture.
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// These are the paths Debian installs the monoliths to. If another distro
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// uses an alternative monolith path, add it to this table
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static constexpr char kBootSrcPathIA32[] = "/usr/lib/grub/i386-efi/monolithic/grubia32.efi";
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static constexpr char kBootDestPathIA32[] = "/EFI/BOOT/BOOTIA32.EFI";
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static constexpr char kBootSrcPathAA64[] = "/usr/lib/grub/arm64-efi/monolithic/grubaa64.efi";
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static constexpr char kBootDestPathAA64[] = "/EFI/BOOT/BOOTAA64.EFI";
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static constexpr char kMultibootModuleSrcPathIA32[] = "/usr/lib/grub/i386-efi/multiboot.mod";
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static constexpr char kMultibootModuleDestPathIA32[] = "/EFI/modules/multiboot.mod";
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static constexpr char kMultibootModuleSrcPathAA64[] = "/usr/lib/grub/arm64-efi/multiboot.mod";
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static constexpr char kMultibootModuleDestPathAA64[] = "/EFI/modules/multiboot.mod";
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static constexpr char kKernelDestPath[] = "/vmlinuz";
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static constexpr char kInitrdDestPath[] = "/initrd";
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static constexpr char kZedbootDestPath[] = "/zedboot.zbi";
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static constexpr char kMultibootBinDestPath[] = "/multiboot.bin";
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// TODO(b/260338443, b/260337906) remove ubuntu and debian variations
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// after migrating to grub-mkimage or adding grub binaries as a prebuilt
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static constexpr char kGrubDebianConfigDestPath[] = "/EFI/debian/grub.cfg";
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static constexpr char kGrubUbuntuConfigDestPath[] = "/EFI/ubuntu/grub.cfg";
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static constexpr char kGrubConfigDestDirectoryPath[] = "/boot/grub";
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static constexpr char kGrubConfigDestPath[] = "/boot/grub/grub.cfg";
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const std::vector<std::string> kGrubModulesX86 =
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{"normal", "configfile", "linux", "linuxefi", "multiboot",
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"ls", "cat", "help", "fat", "part_msdos", "part_gpt"};
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static constexpr char kGrubModulesPath[] = "/usr/lib/grub/";
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static constexpr char kGrubModulesX86Name[] = "i386-efi";
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static constexpr char kGrubModulesArm64Name[] = "arm64-efi";
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class LinuxEspBuilder final {
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public:
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LinuxEspBuilder() = delete;
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LinuxEspBuilder(std::string image_path): image_path_(std::move(image_path)) {}
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LinuxEspBuilder& Argument(std::string key, std::string value) &;
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LinuxEspBuilder& Argument(std::string value) &;
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LinuxEspBuilder& Root(std::string root) &;
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LinuxEspBuilder& Kernel(std::string kernel) &;
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LinuxEspBuilder& Initrd(std::string initrd) &;
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LinuxEspBuilder& Architecture(Arch arch) &;
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bool Build() const;
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private:
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std::string DumpConfig() const;
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const std::string image_path_;
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std::vector<std::pair<std::string, std::string>> arguments_;
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std::vector<std::string> single_arguments_;
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std::string root_;
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std::string kernel_;
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std::string initrd_;
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std::optional<Arch> arch_;
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};
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class FuchsiaEspBuilder {
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public:
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FuchsiaEspBuilder() = delete;
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FuchsiaEspBuilder(std::string image_path): image_path_(std::move(image_path)) {}
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FuchsiaEspBuilder& MultibootBinary(std::string multiboot) &;
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FuchsiaEspBuilder& Zedboot(std::string zedboot) &;
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FuchsiaEspBuilder& Architecture(Arch arch) &;
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bool Build() const;
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private:
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std::string DumpConfig() const;
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const std::string image_path_;
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std::string multiboot_bin_;
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std::string zedboot_;
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std::optional<Arch> arch_;
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};
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bool NewfsMsdos(const std::string& data_image, int data_image_mb,
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int offset_num_mb);
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bool CanGenerateEsp(Arch arch);
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} // namespace cuttlefish
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