From 0ca54f28e0e5a5f08271ff2ff2d818aa5622f835 Mon Sep 17 00:00:00 2001
From: Mark Poliakov <mark@alnyan.me>
Date: Wed, 19 Jul 2023 21:57:18 +0300
Subject: [PATCH] ***: add initial initrd build

---
 .gitignore       |  1 +
 Cargo.lock       |  7 +++++++
 Cargo.toml       |  4 ++++
 build.sh         | 52 ++++++++++++++++++++++++++++++++++++++++++++++++
 init/Cargo.toml  |  8 ++++++++
 init/src/main.rs |  3 +++
 6 files changed, 75 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100755 build.sh
 create mode 100644 init/Cargo.toml
 create mode 100644 init/src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..ea8c4bf7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000..8cddee5b
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "init"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 00000000..87eed40e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,4 @@
+[workspace]
+members = [
+    "init"
+]
diff --git a/build.sh b/build.sh
new file mode 100755
index 00000000..ee89c559
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+set -e
+
+if [ "${ARCH}" = "" ]; then
+    ARCH=aarch64
+fi
+
+if [ "${PROFILE}" = "" ]; then
+    PROFILE=debug
+fi
+
+USER_TARGET=${ARCH}-unknown-yggdrasil
+USER_CARGO_OPTS="--target=${USER_TARGET}"
+
+USER_FILES=init
+
+pstatus() {
+    echo -e "[BUILD] \033[32;1m$@\033[0m"
+}
+
+die() {
+    echo -e "[ERROR] \033[31;1m$@\033[0m" >&2
+    exit 1
+}
+
+check_toolchain() {
+    pstatus "Checking toolchain"
+    if ! cargo +ygg-stage1 --version; then
+        die "Yggdrasil OS Rust toolchain is not built/installed, see https://git.alnyan.me/yggdrasil/yggdrasil-rust"
+    fi
+}
+
+pack_initrd() {
+    cd "target/${USER_TARGET}/${PROFILE}"
+    tar --xform='s/^/\//' -cf initrd.tar ${USER_FILES}
+    cd -
+}
+
+check_toolchain
+
+case "$1" in
+    build|"")
+        pstatus "Building userspace programs"
+        cargo +ygg-stage1 build ${USER_CARGO_OPTS}
+
+        pstatus "Creating initrd.tar"
+        pack_initrd
+        ;;
+    **)
+        ;;
+esac
diff --git a/init/Cargo.toml b/init/Cargo.toml
new file mode 100644
index 00000000..f922052a
--- /dev/null
+++ b/init/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "init"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/init/src/main.rs b/init/src/main.rs
new file mode 100644
index 00000000..f030d1b3
--- /dev/null
+++ b/init/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello!");
+}