internal/rosa: firmware artifact

Required for generic hardware.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/all.go

@@ -30,6 +30,8 @@ const (
 	KernelHeaders
 	// KernelSource is a writable kernel source tree installed to [AbsUsrSrc].
 	KernelSource
+	// Firmware is firmware blobs for use with the Linux kernel.
+	Firmware
 
 	ACL
 	ArgpStandalone

internal/rosa/kernel.go

@@ -1272,3 +1272,55 @@ func init() {
 		Description: "a program in the kernel source tree for creating initramfs archive",
 	}
 }
+
+func (t Toolchain) newFirmware() (pkg.Artifact, string) {
+	const (
+		version  = "20260221"
+		checksum = "vTENPW5rZ6yLVq7YKDLHkCVgKXvwUWigEx7T4LcxoKeBVYIyf1_sEExeV4mo-e46"
+	)
+	return t.NewPackage("firmware", version, pkg.NewHTTPGetTar(
+		nil, "https://gitlab.com/kernel-firmware/linux-firmware/-/"+
+			"archive/"+version+"/linux-firmware-"+version+".tar.bz2",
+		mustDecode(checksum),
+		pkg.TarBzip2,
+	), &PackageAttr{
+		// dedup creates temporary file
+		Writable: true,
+		// does not use configure
+		EnterSource: true,
+
+		Env: []string{
+			"HOME=/proc/nonexistent",
+		},
+	}, &MakeHelper{
+		OmitDefaults:  true,
+		SkipConfigure: true,
+		InPlace:       true,
+
+		Make: []string{
+			"DESTDIR=/work/system",
+			"install-zst",
+		},
+		SkipCheck: true, // requires pre-commit
+		Install:   `make "-j$(nproc)" DESTDIR=/work/system dedup`,
+	},
+		Perl,
+		Parallel,
+		Nettle,
+		Rdfind,
+		Zstd,
+		Findutils,
+		Coreutils,
+	), version
+}
+func init() {
+	artifactsM[Firmware] = Metadata{
+		f: Toolchain.newFirmware,
+
+		Name:        "firmware",
+		Description: "firmware blobs for use with the Linux kernel",
+		Website:     "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/",
+
+		ID: 141464,
+	}
+}