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Build tiny empty PE image as initrd carrier

This commit is contained in:
Julian Stecklina 2022-11-23 13:00:55 +01:00
parent e6953037e7
commit 9567fa7f0e
5 changed files with 150 additions and 5 deletions
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16
flake.nix
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@ -56,17 +56,25 @@
"$IN" "$OUT" "$IN" "$OUT"
''; '';
lanzaboote = naersk-nightly.buildPackage { buildRustEfiApp = src: naersk-nightly.buildPackage {
src = ./rust/lanzaboote; inherit src;
cargoBuildOptions = old: old ++ [ cargoBuildOptions = old: old ++ [
"--target x86_64-unknown-uefi" "--target x86_64-unknown-uefi"
]; ];
}; };
lanzatool = naersk-nightly.buildPackage { buildRustLinuxApp = src: naersk-nightly.buildPackage {
src = ./rust/lanzatool; inherit src;
}; };
# This is basically an empty EFI application that we use as a
# carrier for the initrd.
initrd-stub = buildRustEfiApp ./rust-nightly/initrd-stub;
lanzaboote = buildRustEfiApp ./rust/lanzaboote;
lanzatool = buildRustLinuxApp ./rust/lanzatool;
osrel = pkgs.writeText "lanzaboote-osrel" '' osrel = pkgs.writeText "lanzaboote-osrel" ''
NAME=Lanzaboote NAME=Lanzaboote
VERSION="${lanzaboote.version}" VERSION="${lanzaboote.version}"

2
rust/initrd-stub/.cargo/config Normal file
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@ -0,0 +1,2 @@
[build]
target = "x86_64-unknown-uefi"

104
rust/initrd-stub/Cargo.lock generated Normal file
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@ -0,0 +1,104 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "bit_field"
version = "0.10.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dcb6dd1c2376d2e096796e234a70e17e94cc2d5d54ff8ce42b28cef1d0d359a4"
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "initrd-stub"
version = "0.1.0"
dependencies = [
"uefi",
]
[[package]]
name = "log"
version = "0.4.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
dependencies = [
"cfg-if",
]
[[package]]
name = "proc-macro2"
version = "1.0.47"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
dependencies = [
"unicode-ident",
]
[[package]]
name = "quote"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
dependencies = [
"proc-macro2",
]
[[package]]
name = "syn"
version = "1.0.103"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a864042229133ada95abf3b54fdc62ef5ccabe9515b64717bcb9a1919e59445d"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
]
[[package]]
name = "ucs2"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bad643914094137d475641b6bab89462505316ec2ce70907ad20102d28a79ab8"
dependencies = [
"bit_field",
]
[[package]]
name = "uefi"
version = "0.18.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "07b87700863d65dd4841556be3374d8d4f9f8dbb577ad93a39859e70b3b91f35"
dependencies = [
"bitflags",
"log",
"ucs2",
"uefi-macros",
]
[[package]]
name = "uefi-macros"
version = "0.9.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "275f054a1d9fd7e43a2ce91cc24298a87b281117dea8afc120ae95faa0e96b94"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "unicode-ident"
version = "1.0.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"

12
rust/initrd-stub/Cargo.toml Normal file
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@ -0,0 +1,12 @@
[package]
name = "initrd-stub"
version = "0.1.0"
edition = "2021"
publish = false
[dependencies]
uefi = { version = "0.18.0", default-features = false, features = [ ] }
[profile.release]
opt-level = "s"
lto = true

19
rust/initrd-stub/src/main.rs Normal file
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@ -0,0 +1,19 @@
#![no_main]
#![no_std]
#![feature(abi_efiapi)]
use core::panic::PanicInfo;
use uefi::{
prelude::{entry, Boot, SystemTable},
Handle, Status,
};
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
loop {}
}
#[entry]
fn main(_handle: Handle, mut _system_table: SystemTable<Boot>) -> Status {
Status::UNSUPPORTED
}