started project with basic efi setup
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@@ -0,0 +1,6 @@
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# Zig build outputs
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.zig-cache/
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zig-out/
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# JetBrains IDE
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.idea/
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@@ -0,0 +1,110 @@
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const std = @import("std");
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pub fn build(b: *std.Build) void {
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const target = b.standardTargetOptions(.{});
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const optimize = b.standardOptimizeOption(.{});
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const mod = b.addModule("danos", .{
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.root_source_file = b.path("src/root.zig"),
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.target = target,
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});
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const exe = b.addExecutable(.{
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.name = "danos",
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.root_module = b.createModule(.{
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.root_source_file = b.path("src/main.zig"),
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.target = target,
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.optimize = optimize,
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.imports = &.{
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.{ .name = "danos", .module = mod },
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},
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}),
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});
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b.installArtifact(exe);
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const efiexe = b.addExecutable(.{
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.name = "BOOTX64",
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.root_module = b.createModule(.{
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.root_source_file = b.path("src/efi.zig"),
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.target = b.resolveTargetQuery(.{
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.cpu_arch = .x86_64,
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.os_tag = .uefi,
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}),
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.optimize = optimize,
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}),
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});
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b.installArtifact(efiexe);
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// --- run-efi: boot BOOTX64.efi in QEMU with OVMF firmware ---
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// OVMF paths follow the Arch (edk2-ovmf) layout; override with -Dovmf-code
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// and -Dovmf-vars if your distro installs them elsewhere.
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const ovmf_code = b.option(
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[]const u8,
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"ovmf-code",
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"Path to the OVMF_CODE firmware image",
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) orelse "/usr/share/edk2/x64/OVMF_CODE.4m.fd";
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const ovmf_vars = b.option(
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[]const u8,
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"ovmf-vars",
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"Path to the OVMF_VARS firmware image (a writable copy is made)",
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) orelse "/usr/share/edk2/x64/OVMF_VARS.4m.fd";
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// Assemble an EFI System Partition layout: esp/EFI/BOOT/BOOTX64.efi
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const efi_install = b.addInstallArtifact(efiexe, .{
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.dest_dir = .{ .override = .{ .custom = "esp/EFI/BOOT" } },
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});
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// The firmware needs to write NVRAM, so give it a writable copy of the vars.
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const vars_copy = b.addSystemCommand(&.{ "cp", "-f", ovmf_vars });
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const vars_out = vars_copy.addOutputFileArg("OVMF_VARS.4m.fd");
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const run_efi = b.addSystemCommand(&.{
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"qemu-system-x86_64",
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"-machine",
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"q35",
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"-m",
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"128M",
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"-drive",
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b.fmt("if=pflash,format=raw,readonly=on,file={s}", .{ovmf_code}),
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});
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run_efi.addArg("-drive");
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run_efi.addPrefixedFileArg("if=pflash,format=raw,file=", vars_out);
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// Present the ESP directory to the guest as a FAT drive.
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run_efi.addArgs(&.{
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"-drive",
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b.fmt("format=raw,file=fat:rw:{s}/esp", .{b.install_path}),
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"-net",
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"none",
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});
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run_efi.step.dependOn(&efi_install.step);
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const run_efi_step = b.step("run-efi", "Boot the EFI app in QEMU (OVMF)");
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run_efi_step.dependOn(&run_efi.step);
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// const run_cmd = b.addRunArtifact(exe);
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// const run_step = b.step("run", "Run the app");
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// run_step.dependOn(&run_cmd.step);
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// run_cmd.step.dependOn(b.getInstallStep());
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//
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// if (b.args) |args| {
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// run_cmd.addArgs(args);
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// }
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const mod_tests = b.addTest(.{
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.root_module = mod,
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});
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const run_mod_tests = b.addRunArtifact(mod_tests);
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const exe_tests = b.addTest(.{
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.root_module = exe.root_module,
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});
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const run_exe_tests = b.addRunArtifact(exe_tests);
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const test_step = b.step("test", "Run tests");
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test_step.dependOn(&run_mod_tests.step);
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test_step.dependOn(&run_exe_tests.step);
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}
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@@ -0,0 +1,81 @@
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.{
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// This is the default name used by packages depending on this one. For
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// example, when a user runs `zig fetch --save <url>`, this field is used
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// as the key in the `dependencies` table. Although the user can choose a
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// different name, most users will stick with this provided value.
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//
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// It is redundant to include "zig" in this name because it is already
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// within the Zig package namespace.
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.name = .danos,
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// This is a [Semantic Version](https://semver.org/).
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// In a future version of Zig it will be used for package deduplication.
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.version = "0.0.0",
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// Together with name, this represents a globally unique package
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// identifier. This field is generated by the Zig toolchain when the
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// package is first created, and then *never changes*. This allows
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// unambiguous detection of one package being an updated version of
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// another.
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//
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// When forking a Zig project, this id should be regenerated (delete the
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// field and run `zig build`) if the upstream project is still maintained.
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// Otherwise, the fork is *hostile*, attempting to take control over the
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// original project's identity. Thus it is recommended to leave the comment
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// on the following line intact, so that it shows up in code reviews that
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// modify the field.
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.fingerprint = 0x402a07325b01d626, // Changing this has security and trust implications.
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// Tracks the earliest Zig version that the package considers to be a
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// supported use case.
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.minimum_zig_version = "0.16.0",
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// This field is optional.
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// Each dependency must either provide a `url` and `hash`, or a `path`.
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// `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
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// Once all dependencies are fetched, `zig build` no longer requires
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// internet connectivity.
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.dependencies = .{
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// See `zig fetch --save <url>` for a command-line interface for adding dependencies.
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//.example = .{
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// // When updating this field to a new URL, be sure to delete the corresponding
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// // `hash`, otherwise you are communicating that you expect to find the old hash at
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// // the new URL. If the contents of a URL change this will result in a hash mismatch
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// // which will prevent zig from using it.
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// .url = "https://example.com/foo.tar.gz",
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//
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// // This is computed from the file contents of the directory of files that is
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// // obtained after fetching `url` and applying the inclusion rules given by
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// // `paths`.
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// //
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// // This field is the source of truth; packages do not come from a `url`; they
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// // come from a `hash`. `url` is just one of many possible mirrors for how to
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// // obtain a package matching this `hash`.
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// //
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// // Uses the [multihash](https://multiformats.io/multihash/) format.
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// .hash = "...",
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//
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// // When this is provided, the package is found in a directory relative to the
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// // build root. In this case the package's hash is irrelevant and therefore not
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// // computed. This field and `url` are mutually exclusive.
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// .path = "foo",
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//
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// // When this is set to `true`, a package is declared to be lazily
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// // fetched. This makes the dependency only get fetched if it is
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// // actually used.
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// .lazy = false,
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//},
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},
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// Specifies the set of files and directories that are included in this package.
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// Only files and directories listed here are included in the `hash` that
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// is computed for this package. Only files listed here will remain on disk
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// when using the zig package manager. As a rule of thumb, one should list
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// files required for compilation plus any license(s).
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// Paths are relative to the build root. Use the empty string (`""`) to refer to
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// the build root itself.
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// A directory listed here means that all files within, recursively, are included.
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.paths = .{
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"build.zig",
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"build.zig.zon",
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"src",
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// For example...
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//"LICENSE",
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//"README.md",
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},
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}
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+15
@@ -0,0 +1,15 @@
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const std = @import("std");
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const uefi = std.os.uefi;
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pub fn main() uefi.Status {
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// std's start code populates these globals before calling main.
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const con_out = uefi.system_table.con_out orelse return .device_error;
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// UEFI console output expects a null-terminated UTF-16 string.
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const message = std.unicode.utf8ToUtf16LeStringLiteral("Hello from Zig UEFI!\r\n");
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_ = con_out.outputString(message) catch {};
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while (true) {}
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return .success;
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}
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@@ -0,0 +1,8 @@
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const std = @import("std");
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const Io = std.Io;
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const danos = @import("danos");
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pub fn main() !void {
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}
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@@ -0,0 +1 @@
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//! By convention, root.zig is the root source file when making a package.
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