internal/rosa/package: migrate kernel

This introduces bindings for extra paths and KnownChecksum, and exposes a passthrough special case.

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

1 files changed, 160 insertions, 0 deletions

diff --git a/internal/rosa/package/kernel/package.az b/internal/rosa/package/kernel/package.az
new file mode 100644
index 00000000..e3ce8b3e
--- /dev/null
+++ b/internal/rosa/package/kernel/package.az
@@ -0,0 +1,160 @@
+package kernel-source {
+	description = "unpatched Linux kernel source tree";
+	website = "https://kernel.org";
+
+	version* = "6.12.87";
+	output = remoteTar {
+		url = "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/"+
+			"snapshot/linux-"+version+".tar.gz";
+		checksum = "QTl5teIy0K5KsOLYGHQ3FbnPCZNRH2bySXVzghiOoHDdM3zAcSPUkmdly85lMzHx";
+		compress = gzip;
+	};
+}
+
+package kernel-headers {
+	description = "an installation of kernel headers";
+	website = "https://kernel.org";
+
+	source = kernel-source;
+
+	files = [
+		// updated manually for API changes
+		"version.h",
+	];
+	toyboxEarly = true;
+
+	exec = make {
+		skipConfigure = true;
+		make = [
+			"-f /usr/src/kernel-headers/Makefile",
+			"O=/tmp/kbuild",
+			"LLVM=1",
+			`HOSTLDFLAGS="${LDFLAGS:-''}"`,
+			"INSTALL_HDR_PATH=/work/system",
+			"headers_install",
+		];
+		skipCheck = true;
+		install = `
+cat \
+	/usr/src/version.h > \
+	/work/system/include/linux/version.h
+`;
+	};
+
+	checksum = arch {
+		default = "";
+
+		amd64 = "lCmBNcMeUmXifg0vecKOPy3GAaFcJSmOPnf3wit9xYTDSTsFADPt1xxUFfmTn1fD";
+		arm64 = "PlRxp4JzZeMGx7CScRlT1NBzc2NVyJlb8Gm8sa3ofFght9ZT101ZJhcIXiCkHSHM";
+	};
+	inputs = [ rsync ];
+}
+
+package kernel {
+	description = "the generic Rosa OS linux kernel";
+	website = "https://kernel.org";
+	anitya = 375621;
+
+	source = kernel-source;
+	patches = [
+		"f54a91f5337cd918eb86cf600320d25b6cfd8209.patch",
+		"6ce6fbfddc5b127e4f57c3b5bfdcf40239a4fc2f.patch",
+	];
+	files = [
+		arch {
+			amd64 = ".config:kernel_amd64.config";
+			arm64 = ".config:kernel_arm64.config";
+			riscv64 = ".config:kernel_riscv64.config";
+		},
+
+		".installkernel:installkernel",
+		".depmod:depmod",
+	];
+
+	env = [
+		"PATH=/system/sbin",
+	];
+
+	early = `
+install -Dm0400 \
+	/usr/src/.config \
+	/tmp/kbuild/.config
+install -Dm0500 \
+	/usr/src/.installkernel \
+	/sbin/installkernel
+`;
+
+	exclusive = true;
+
+	exec = make {
+		omitDefaults = true;
+		skipConfigure = true;
+
+		// Build, install, and boot kernel before running kselftest on it.
+		skipCheck = true;
+
+		make = [
+			"-f /usr/src/kernel/Makefile",
+			"O=/tmp/kbuild",
+
+			"LLVM=1",
+			"KBUILD_BUILD_VERSION='1-Rosa'",
+			"KBUILD_BUILD_TIMESTAMP='2106-02-07 06:28:15 UTC'",
+			"KBUILD_BUILD_USER=kbuild",
+			"KBUILD_BUILD_HOST=localhost",
+			"all",
+		];
+
+		install = `
+# kernel is not aware of kmod moduledir
+install -Dm0500 \
+	/usr/src/.depmod \
+	/sbin/depmod
+
+make \
+	` + jobsFlagE + ` \
+	-f /usr/src/kernel/Makefile \
+	O=/tmp/kbuild \
+	LLVM=1 \
+	INSTALL_PATH=/work \
+	install \
+	INSTALL_MOD_PATH=/work/system \
+	DEPMOD=/sbin/depmod \
+	modules_install
+rm -v "/work/system/lib/modules/$(make -f /usr/src/kernel/Makefile kernelversion)/build"
+`;
+	};
+
+	inputs = [
+		flex,
+		bison,
+		m4,
+		tar,
+		perl,
+		bc,
+		sed,
+		gawk,
+		coreutils,
+		diffutils,
+		python,
+
+		xz,
+		gzip,
+		kmod,
+		elfutils,
+		util-linux,
+		kernel-headers,
+	];
+}
+
+package gen_init_cpio {
+	description = "a program in the kernel source tree for creating initramfs archive";
+	source = kernel-source;
+
+	exec = generic {
+		build = `
+mkdir -p /work/system/bin/
+cc -o /work/system/bin/gen_init_cpio usr/gen_init_cpio.c
+`;
+	};
+}