Initial commit

3 files changed, 77 insertions, 0 deletions

diff --git a/.SRCINFO b/.SRCINFO
new file mode 100644
index 000000000000..8994d221f70b
--- /dev/null
+++ b/.SRCINFO
@@ -0,0 +1,18 @@
+pkgbase = amd-real-ucode-git
+	pkgdesc = Actually provides the latest CPU microcode for AMD
+	pkgver = 20231021.ba8eaf5
+	pkgrel = 1
+	arch = any
+	license = custom
+	makedepends = linux-firmware
+	makedepends = git
+	provides = amd-ucode
+	conflicts = amd-ucode
+	source = CPUMicrocodes::git+https://github.com/platomav/CPUMicrocodes
+	source = real-ucode::git+https://github.com/divestedcg/real-ucode#commit=c93c9ed85eb3c0566a76d8c3accebd6ee82c1ca9
+	source = amd-ucodegen::git+https://github.com/AndyLavr/amd-ucodegen#commit=0d34b54e396ef300d0364817e763d2c7d1ffff02
+	sha256sums = SKIP
+	sha256sums = SKIP
+	sha256sums = SKIP
+
+pkgname = amd-real-ucode-git
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000000..8631db7dd9f8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+*
+!.gitignore
+!PKGBUILD
+!.SRCINFO
+
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 000000000000..26a19080646a
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,54 @@
+# Maintainer: moparisthebest <admin dot archlinux AT moparisthebest dot com>
+# Contributor: Tad <tad@spotco.us>
+pkgname=amd-real-ucode-git
+pkgver=20231021.ba8eaf5
+pkgrel=1
+pkgdesc="Actually provides the latest CPU microcode for AMD"
+arch=('any')
+license=('custom')
+makedepends=('linux-firmware' 'git')
+conflicts=('amd-ucode')
+provides=('amd-ucode')
+source=('CPUMicrocodes::git+https://github.com/platomav/CPUMicrocodes' 'real-ucode::git+https://github.com/divestedcg/real-ucode#commit=c93c9ed85eb3c0566a76d8c3accebd6ee82c1ca9' 'amd-ucodegen::git+https://github.com/AndyLavr/amd-ucodegen#commit=0d34b54e396ef300d0364817e763d2c7d1ffff02')
+sha256sums=(SKIP SKIP SKIP)
+
+pkgver() {
+  cd "${srcdir}/CPUMicrocodes"
+  git log -1 --pretty='format:%cd.%h' --date=format:'%Y%m%d'
+}
+
+build() {
+	set -eo pipefail
+
+	cd amd-ucodegen
+	patch -p1 < ../real-ucode/amd-ucodegen-tweak.diff
+	make
+	cd ../CPUMicrocodes
+	mv ../amd-ucodegen/amd-ucodegen .
+	../real-ucode/process-amd.sh
+	cd ..
+	mkdir -p firmware
+	cd firmware
+	cp /usr/lib/firmware/amd-ucode/microcode_amd*.bin .
+	cp ../CPUMicrocodes/microcode_amd*.bin .
+	# this directory and exact name matters
+	# https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/blob/main/PKGBUILD?ref_type=heads#L43
+	mkdir -p kernel/x86/microcode
+  cat microcode_amd*.bin > kernel/x86/microcode/AuthenticAMD.bin
+
+  # Reproducibility: set the timestamp on the bin file
+  if [[ -n ${SOURCE_DATE_EPOCH} ]]; then
+    touch -d @${SOURCE_DATE_EPOCH} kernel/x86/microcode/AuthenticAMD.bin
+  fi
+
+  # Reproducibility: strip the inode and device numbers from the cpio archive
+  echo kernel/x86/microcode/AuthenticAMD.bin |
+    bsdtar --uid 0 --gid 0 -cnf - -T - |
+    bsdtar --null -cf - --format=newc @- > ../amd-ucode.img
+}
+
+package() {
+	install -Dt "${pkgdir}/boot" -m644 amd-ucode.img
+
+  install -Dt "${pkgdir}/usr/share/licenses/${pkgname}" -m644 real-ucode/LICENSE.amd-ucode
+}