feat: add sd-stub and sd-boot

Add `sd-stub` and `sd-boot`.

Signed-off-by: Noel Georgi <git@frezbo.dev>

.github/renovate.json

@@ -80,7 +80,8 @@
         {
             "matchPackageNames": [
                 "git://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git",
-                "benhoyt/inih"
+                "benhoyt/inih",
+                "systemd/systemd"
             ],
             "versioning": "regex:^(?<major>\\d+)\\.?(?<minor>\\d+)?\\.?(?<patch>\\d+)?$"
         },

Makefile

@@ -60,6 +60,8 @@ TARGETS = \
 	openssl \
 	raspberrypi-firmware \
 	runc \
+	sd-boot \
+	sd-stub \
 	socat \
 	syslinux \
 	u-boot \

Pkgfile

@@ -3,7 +3,7 @@
 format: v1alpha2
 
 vars:
-  TOOLS_IMAGE: ghcr.io/siderolabs/tools:v1.5.0-alpha.0-2-g47b0fd3
+  TOOLS_IMAGE: ghcr.io/siderolabs/tools:v1.5.0-alpha.0-3-g81b09a5
 
   # renovate: datasource=github-releases depName=containernetworking/plugins
   cni_version: v1.2.0
@@ -162,6 +162,11 @@ vars:
   syslinux_sha256: 26d3986d2bea109d5dc0e4f8c4822a459276cf021125e8c9f23c3cca5d8c850e
   syslinux_sha512: dd2b2916962b9e93bc1e714182e3ca2a727a229b8afabe913050bcfdd43ee2af51ee3acf79121d8c20caf434583efaa7f3196871e0e07c04d82191323a50fe31
 
+  # renovate: datasource=github-releases depName=systemd/systemd
+  systemd_version: 253
+  systemd_sha256: acbd86d42ebc2b443722cb469ad215a140f504689c7a9133ecf91b235275a491
+  systemd_sha512: 3bbc431a292ab590b70d3b490a528f71d30ccf478ddfa66d1c210f40c260ef49ac30651c19f2d073acf38d68398a4a6fbf95391f0e3ea0333d94b9d4e81d514f
+
   # renovate: datasource=github-tags depName=ARM-software/arm-trusted-firmware
   arm_trusted_firmware_version: v2.8.0
   arm_trusted_firmware_sha256: 60fad60eeb6840097f8e64f16093c06ddb2ef269c7a22affed02beaa6cefe466

sd-boot/patches/musl.patch

@@ -0,0 +1,40 @@
+From a4ff7772acf1d983921833aa20ccd7c4d5e59a1c Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex@linutronix.de>
+Date: Mon, 6 Mar 2023 15:24:49 +0100
+Subject: [PATCH] src/boot/efi/efi-string.c: define wchar_t from __WCHAR_TYPE__
+
+systemd-boot relies on wchar_t being 16 bit, and breaks at build time otherwise.
+
+To set wchar_t to 16 bit it is passing -fshort-wchar to gcc; this has the
+desired effect on glibc (which sets wchar_t from __WCHAR_TYPE__) but not on
+musl (which hardcodes it to 32 bit).
+
+This patch ensures wchar_t is set from the compiler flags on all systems; note
+that systemd-boot is not actually using functions from musl or other libc, just their headers.
+
+Meanwhile upstream has refactored the code to not rely on libc headers at all;
+however this will not be backported to v253 and we need a different fix.
+
+Upstream-Status: Inappropriate [fixed differently in trunk according to https://github.com/systemd/systemd/pull/26689]
+Signed-off-by: Alexander Kanavin <alex@linutronix.de>
+---
+ src/boot/efi/efi-string.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/boot/efi/efi-string.c b/src/boot/efi/efi-string.c
+index 22923d60f6..22a8d1ef71 100644
+--- a/src/boot/efi/efi-string.c
++++ b/src/boot/efi/efi-string.c
+@@ -2,7 +2,13 @@
+
+ #include <stdbool.h>
+ #include <stdint.h>
++
++#if SD_BOOT
++typedef __WCHAR_TYPE__ wchar_t;
++#define __DEFINED_wchar_t
++#else
+ #include <wchar.h>
++#endif
+
+ #include "efi-string.h"

sd-boot/pkg.yaml

@@ -0,0 +1,49 @@
+name: sd-boot
+variant: scratch
+shell: /toolchain/bin/bash
+dependencies:
+  - stage: base
+steps:
+  - sources:
+      - url: https://github.com/systemd/systemd/archive/refs/tags/v{{ .systemd_version }}.tar.gz
+        destination: systemd.tar.gz
+        sha256: "{{ .systemd_sha256 }}"
+        sha512: "{{ .systemd_sha512 }}"
+    env:
+      LD_LIBRARY_PATH: /toolchain/lib
+    prepare:
+      - |
+        tar -xzf systemd.tar.gz --strip-components=1
+
+        ln -s /toolchain/bin/echo /toolchain/bin/getent
+        mkdir -p /usr/bin
+        ln -sf /toolchain/bin/env /usr/bin/env
+        ln -sf /toolchain/bin/python3 /toolchain/bin/python
+
+        pip3 install jinja2 ninja
+
+        patch -p1 < /pkg/patches/musl.patch
+
+        meson setup build \
+          --buildtype=release \
+          -Dmode=release \
+          -Dsbat-distro=talos \
+          -Dsbat-distro-summary="Talos Linux" \
+          -Dsbat-distro-url=https://github.com/siderolabs/pkgs/issues \
+          -Dman=false \
+          -Defi=true \
+          -Dgnu-efi=true \
+          -Defi-libdir=/toolchain/lib \
+          -Defi-includedir=/toolchain/include/efi \
+          -Dtests=false
+    build:
+      - |
+        ninja -j $(nproc) -C build systemd-boot
+    install:
+      - |
+        mkdir -p /rootfs
+
+        cp build/src/boot/efi/*.efi /rootfs
+finalize:
+  - from: /rootfs
+    to: /

sd-stub/patches/musl.patch

@@ -0,0 +1,40 @@
+From a4ff7772acf1d983921833aa20ccd7c4d5e59a1c Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex@linutronix.de>
+Date: Mon, 6 Mar 2023 15:24:49 +0100
+Subject: [PATCH] src/boot/efi/efi-string.c: define wchar_t from __WCHAR_TYPE__
+
+systemd-boot relies on wchar_t being 16 bit, and breaks at build time otherwise.
+
+To set wchar_t to 16 bit it is passing -fshort-wchar to gcc; this has the
+desired effect on glibc (which sets wchar_t from __WCHAR_TYPE__) but not on
+musl (which hardcodes it to 32 bit).
+
+This patch ensures wchar_t is set from the compiler flags on all systems; note
+that systemd-boot is not actually using functions from musl or other libc, just their headers.
+
+Meanwhile upstream has refactored the code to not rely on libc headers at all;
+however this will not be backported to v253 and we need a different fix.
+
+Upstream-Status: Inappropriate [fixed differently in trunk according to https://github.com/systemd/systemd/pull/26689]
+Signed-off-by: Alexander Kanavin <alex@linutronix.de>
+---
+ src/boot/efi/efi-string.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/boot/efi/efi-string.c b/src/boot/efi/efi-string.c
+index 22923d60f6..22a8d1ef71 100644
+--- a/src/boot/efi/efi-string.c
++++ b/src/boot/efi/efi-string.c
+@@ -2,7 +2,13 @@
+
+ #include <stdbool.h>
+ #include <stdint.h>
++
++#if SD_BOOT
++typedef __WCHAR_TYPE__ wchar_t;
++#define __DEFINED_wchar_t
++#else
+ #include <wchar.h>
++#endif
+
+ #include "efi-string.h"

sd-stub/pkg.yaml

@@ -0,0 +1,49 @@
+name: sd-stub
+variant: scratch
+shell: /toolchain/bin/bash
+dependencies:
+  - stage: base
+steps:
+  - sources:
+      - url: https://github.com/systemd/systemd/archive/refs/tags/v{{ .systemd_version }}.tar.gz
+        destination: systemd.tar.gz
+        sha256: "{{ .systemd_sha256 }}"
+        sha512: "{{ .systemd_sha512 }}"
+    env:
+      LD_LIBRARY_PATH: /toolchain/lib
+    prepare:
+      - |
+        tar -xzf systemd.tar.gz --strip-components=1
+
+        ln -s /toolchain/bin/echo /toolchain/bin/getent
+        mkdir -p /usr/bin
+        ln -sf /toolchain/bin/env /usr/bin/env
+        ln -sf /toolchain/bin/python3 /toolchain/bin/python
+
+        pip3 install jinja2 ninja
+
+        patch -p1 < /pkg/patches/musl.patch
+
+        meson setup build \
+          --buildtype=release \
+          -Dmode=release \
+          -Dsbat-distro=talos \
+          -Dsbat-distro-summary="Talos Linux" \
+          -Dsbat-distro-url=https://github.com/siderolabs/pkgs/issues \
+          -Dman=false \
+          -Defi=true \
+          -Dgnu-efi=true \
+          -Defi-libdir=/toolchain/lib \
+          -Defi-includedir=/toolchain/include/efi \
+          -Dtests=false
+    build:
+      - |
+        ninja -j $(nproc) -C build systemd-stub
+    install:
+      - |
+        mkdir -p /rootfs
+
+        cp build/src/boot/efi/*.efi.stub /rootfs
+finalize:
+  - from: /rootfs
+    to: /