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- load("//build/bazel_common_rules/dist:dist.bzl", "copy_to_dist_dir")
- load("//build/kernel/kleaf:constants.bzl", "aarch64_outs")
- load(
- "//build/kernel/kleaf:kernel.bzl",
- "kernel_build",
- "kernel_build_config",
- "kernel_compile_commands",
- "kernel_images",
- "kernel_modules_install",
- "kernel_uapi_headers_cc_library",
- "merged_kernel_uapi_headers",
- "super_image",
- "unsparsed_image",
- )
- load(
- "//build:msm_kernel_extensions.bzl",
- "define_extras",
- "get_build_config_fragments",
- "get_dtb_list",
- "get_dtbo_list",
- "get_dtstree",
- "get_gki_ramdisk_prebuilt_binary",
- "get_vendor_ramdisk_binaries",
- )
- load("@bazel_skylib//rules:write_file.bzl", "write_file")
- load(":msm_common.bzl", "define_top_level_config", "gen_config_without_source_lines", "get_out_dir")
- load(":msm_dtc.bzl", "define_dtc_dist")
- load(":msm_abl.bzl", "define_abl_dist")
- load(":avb_boot_img.bzl", "avb_sign_boot_image")
- load(":image_opts.bzl", "boot_image_opts")
- load(":target_variants.bzl", "lxc_variants")
- load(":modules.bzl", "get_gki_modules_list")
- def _define_build_config(
- msm_target,
- target,
- variant,
- boot_image_opts = boot_image_opts(),
- build_config_fragments = []):
- """Creates a kernel_build_config for an MSM target
- Creates a `kernel_build_config` for input to a `kernel_build` rule.
- Args:
- msm_target: name of target platform (e.g. "kalama")
- variant: variant of kernel to build (e.g. "gki")
- """
- # keep earlycon addr in earlycon cmdline param only when provided explicitly in target's bazel file
- # otherwise, rely on stdout-path
- earlycon_param = "={}".format(boot_image_opts.earlycon_addr) if boot_image_opts.earlycon_addr != None else ""
- earlycon_param = '[ "$KERNEL_CMDLINE_CONSOLE_AUTO" != "0" ] && KERNEL_VENDOR_CMDLINE+=\' earlycon{} \''.format(earlycon_param)
- write_file(
- name = "{}_build_config_bazel".format(target),
- out = "build.config.msm.{}.generated".format(target),
- content = [
- 'KERNEL_DIR="msm-kernel"',
- "VARIANTS=({})".format(" ".join([v.replace("-", "_") for v in lxc_variants])),
- "MSM_ARCH={}".format(msm_target.replace("-", "_")),
- "VARIANT={}".format(variant.replace("-", "_")),
- "ABL_SRC=bootable/bootloader/edk2",
- "BOOT_IMAGE_HEADER_VERSION={}".format(boot_image_opts.boot_image_header_version),
- "BASE_ADDRESS=0x%X" % boot_image_opts.base_address,
- "PAGE_SIZE={}".format(boot_image_opts.page_size),
- "BUILD_VENDOR_DLKM=1",
- "PREPARE_SYSTEM_DLKM=1",
- "SUPER_IMAGE_SIZE=0x%X" % boot_image_opts.super_image_size,
- "TRIM_UNUSED_MODULES=1",
- "BUILD_INIT_BOOT_IMG=1",
- "LZ4_RAMDISK={}".format(int(boot_image_opts.lz4_ramdisk)),
- '[ -z "$DT_OVERLAY_SUPPORT" ] && DT_OVERLAY_SUPPORT=1',
- earlycon_param,
- "KERNEL_VENDOR_CMDLINE+=' {} '".format(" ".join(boot_image_opts.kernel_vendor_cmdline_extras)),
- "VENDOR_BOOTCONFIG+='androidboot.first_stage_console=1 androidboot.hardware=qcom_kp'",
- "", # Needed for newline at end of file
- ],
- )
- top_level_config = define_top_level_config(target)
- common_config = gen_config_without_source_lines("build.config.common", target)
- # Concatenate build config fragments to form the final config
- kernel_build_config(
- name = "{}_build_config".format(target),
- srcs = [
- # do not sort
- top_level_config,
- "build.config.constants",
- common_config,
- "build.config.aarch64",
- ":{}_build_config_bazel".format(target),
- ] + [fragment for fragment in build_config_fragments] + [
- "build.config.msm.common",
- "build.config.msm.autoghgvm",
- ],
- )
- board_cmdline_extras = " ".join(boot_image_opts.board_kernel_cmdline_extras)
- if board_cmdline_extras:
- write_file(
- name = "{}_extra_cmdline".format(target),
- out = "board_extra_cmdline_{}".format(target),
- content = [board_cmdline_extras, ""],
- )
- board_bc_extras = " ".join(boot_image_opts.board_bootconfig_extras)
- if board_bc_extras:
- write_file(
- name = "{}_extra_bootconfig".format(target),
- out = "board_extra_bootconfig_{}".format(target),
- content = [board_bc_extras, ""],
- )
- def _define_kernel_build(
- target,
- in_tree_module_list,
- dtb_list,
- dtbo_list,
- dtstree):
- """Creates a `kernel_build` and other associated definitions
- This is where the main kernel build target is created (e.g. `//msm-kernel:kalama_gki`).
- Many other rules will take this `kernel_build` as an input.
- Args:
- target: name of main Bazel target (e.g. `kalama_gki`)
- in_tree_module_list: list of in-tree modules
- dtb_list: device tree blobs expected to be built
- dtbo_list: device tree overlay blobs expected to be built
- """
- out_list = [".config", "Module.symvers"]
- if dtb_list:
- out_list += dtb_list
- if dtbo_list:
- out_list += dtbo_list
- # Add basic kernel outputs
- out_list += aarch64_outs
- # Remove unused compressed formats
- out_list.remove("Image.lz4")
- out_list.remove("Image.gz")
- kernel_build(
- name = target,
- module_outs = in_tree_module_list,
- module_implicit_outs = get_gki_modules_list("arm64"),
- outs = out_list,
- build_config = ":{}_build_config".format(target),
- dtstree = dtstree,
- kmi_symbol_list = None,
- additional_kmi_symbol_lists = None,
- abi_definition = None,
- visibility = ["//visibility:public"],
- )
- kernel_modules_install(
- name = "{}_modules_install".format(target),
- kernel_build = ":{}".format(target),
- )
- merged_kernel_uapi_headers(
- name = "{}_merged_kernel_uapi_headers".format(target),
- kernel_build = ":{}".format(target),
- )
- kernel_compile_commands(
- name = "{}_compile_commands".format(target),
- kernel_build = ":{}".format(target),
- )
- def _define_image_build(
- target,
- msm_target,
- base_kernel,
- build_boot = True,
- build_dtbo = False,
- build_initramfs = False,
- boot_image_opts = boot_image_opts(),
- boot_image_outs = None,
- dtbo_list = [],
- vendor_ramdisk_binaries = None,
- gki_ramdisk_prebuilt_binary = None,
- in_tree_module_list = []):
- """Creates a `kernel_images` target which will generate bootable device images
- Args:
- target: name of main Bazel target (e.g. `kalama_gki`)
- msm_target: name of target platform (e.g. "kalama")
- base_kernel: kernel_build base kernel
- build_boot: whether to build a boot image
- build_dtbo: whether to build a dtbo image
- build_initramfs: whether to build an initramfs image
- boot_image_outs: boot image outputs,
- dtbo_list: list of device tree overlay blobs to be built into `dtbo.img`
- vendor_ramdisk_binaries: ramdisk binaries (cpio archives)
- """
- # Generate the vendor_dlkm list
- native.genrule(
- name = "{}_vendor_dlkm_modules_list_generated".format(target),
- srcs = [],
- outs = ["modules.list.vendor_dlkm.{}".format(target)],
- cmd_bash = """
- touch "$@"
- for module in {mod_list}; do
- basename "$$module" >> "$@"
- done
- """.format(mod_list = " ".join(in_tree_module_list)),
- )
- kernel_images(
- name = "{}_images".format(target),
- kernel_modules_install = ":{}_modules_install".format(target),
- kernel_build = ":{}".format(target),
- base_kernel_images = "{}_images".format(base_kernel),
- build_boot = build_boot,
- build_dtbo = build_dtbo,
- build_initramfs = build_initramfs,
- build_vendor_boot = False,
- build_vendor_kernel_boot = False,
- build_vendor_dlkm = False,
- build_system_dlkm = False,
- modules_list = "modules.list.msm.{}".format(msm_target),
- system_dlkm_modules_list = "android/gki_system_dlkm_modules",
- vendor_dlkm_modules_list = ":{}_vendor_dlkm_modules_list_generated".format(target),
- system_dlkm_modules_blocklist = "modules.systemdlkm_blocklist.msm.{}".format(msm_target),
- vendor_dlkm_modules_blocklist = "modules.vendor_blocklist.msm.{}".format(msm_target),
- dtbo_srcs = [":{}/".format(target) + d for d in dtbo_list] if dtbo_list else None,
- vendor_ramdisk_binaries = vendor_ramdisk_binaries,
- gki_ramdisk_prebuilt_binary = gki_ramdisk_prebuilt_binary,
- boot_image_outs = boot_image_outs,
- deps = [
- "modules.list.msm.{}".format(msm_target),
- "modules.vendor_blocklist.msm.{}".format(msm_target),
- "modules.systemdlkm_blocklist.msm.{}".format(msm_target),
- "android/gki_system_dlkm_modules",
- ],
- )
- if build_boot:
- artifacts = "{}_images".format(target)
- else:
- artifacts = "{}_gki_artifacts".format(base_kernel)
- avb_sign_boot_image(
- name = "{}_avb_sign_boot_image".format(target),
- artifacts = artifacts,
- avbtool = "//prebuilts/kernel-build-tools:linux-x86/bin/avbtool",
- key = "//tools/mkbootimg:gki/testdata/testkey_rsa4096.pem",
- props = [
- "com.android.build.boot.os_version:13",
- "com.android.build.boot.security_patch:2023-05-05",
- ],
- boot_partition_size = int(boot_image_opts.boot_partition_size),
- )
- native.filegroup(
- name = "{}_system_dlkm_image_file".format(target),
- srcs = ["{}_images".format(base_kernel)],
- output_group = "system_dlkm.img",
- )
- native.filegroup(
- name = "{}_vendor_dlkm_image_file".format(target),
- srcs = [":{}_images".format(target)],
- output_group = "vendor_dlkm.img",
- )
- super_image(
- name = "{}_super_image".format(target),
- system_dlkm_image = ":{}_system_dlkm_image_file".format(target),
- vendor_dlkm_image = ":{}_vendor_dlkm_image_file".format(target),
- )
- unsparsed_image(
- name = "{}_unsparsed_image".format(target),
- src = "{}_super_image".format(target),
- out = "super_unsparsed.img",
- )
- def _define_kernel_dist(
- target,
- msm_target,
- variant,
- boot_image_opts = boot_image_opts()):
- """Creates distribution targets for kernel builds
- When Bazel builds everything, the outputs end up buried in `bazel-bin`.
- These rules are used to copy the build artifacts to `out/msm-kernel-<target>/dist/`
- with proper permissions, etc.
- Args:
- target: name of main Bazel target (e.g. `kalama_gki`)
- msm_target: name of just the platform target (e.g. `kalama`)
- variant: name of just the variant (e.g. `gki`)
- """
- dist_dir = get_out_dir(msm_target, variant) + "/dist"
- msm_dist_targets = [
- # do not sort
- ":{}".format(target),
- ":{}_images".format(target),
- ":{}_merged_kernel_uapi_headers".format(target),
- ":{}_build_config".format(target),
- ]
- copy_to_dist_dir(
- name = "{}_dist".format(target),
- data = msm_dist_targets,
- dist_dir = dist_dir,
- flat = True,
- wipe_dist_dir = True,
- allow_duplicate_filenames = True,
- mode_overrides = {
- # do not sort
- "**/*.elf": "755",
- "**/vmlinux": "755",
- "**/Image": "755",
- "**/*.dtb*": "755",
- "**/LinuxLoader*": "755",
- "**/*": "644",
- },
- log = "info",
- )
- def _define_uapi_library(target):
- """Define a cc_library for userspace programs to use
- Args:
- target: kernel_build target name (e.g. "kalama_gki")
- """
- kernel_uapi_headers_cc_library(
- name = "{}_uapi_header_library".format(target),
- kernel_build = ":{}".format(target),
- )
- def define_msm_lagvm(
- msm_target,
- variant,
- in_tree_module_list,
- boot_image_opts = boot_image_opts()):
- """Top-level kernel build definition macro for an MSM platform
- Args:
- msm_target: name of target platform (e.g. "kalama")
- variant: variant of kernel to build (e.g. "gki")
- in_tree_module_list: list of in-tree modules
- boot_image_header_version: boot image header version (for `boot.img`)
- base_address: edk2 base address
- page_size: kernel page size
- super_image_size: size of super image partition
- lz4_ramdisk: whether to use an lz4-compressed ramdisk
- """
- if not variant in lxc_variants:
- fail("{} not defined in target_variants.bzl lxc_variants!".format(variant))
- # Enforce format of "//msm-kernel:target-foo_variant-bar" (underscore is the delimeter
- # between target and variant)
- target = msm_target.replace("_", "-") + "_" + variant.replace("_", "-")
- # Always set base_kernel to kernel_aarch64
- base_kernel = "//common:kernel_aarch64"
- lxc_target = msm_target.split("-")[0]
- dtb_list = get_dtb_list(lxc_target)
- dtbo_list = get_dtbo_list(lxc_target)
- dtstree = get_dtstree(lxc_target)
- vendor_ramdisk_binaries = get_vendor_ramdisk_binaries(target)
- gki_ramdisk_prebuilt_binary = get_gki_ramdisk_prebuilt_binary()
- build_config_fragments = get_build_config_fragments(lxc_target)
- _define_build_config(
- lxc_target,
- target,
- variant,
- boot_image_opts = boot_image_opts,
- build_config_fragments = build_config_fragments,
- )
- _define_kernel_build(
- target,
- in_tree_module_list,
- dtb_list,
- dtbo_list,
- dtstree,
- )
- _define_image_build(
- target,
- msm_target,
- base_kernel,
- # When building a GKI target, we take the kernel and boot.img directly from
- # common, so no need to build here.
- build_boot = True,
- build_dtbo = True,
- build_initramfs = True,
- dtbo_list = dtbo_list,
- vendor_ramdisk_binaries = vendor_ramdisk_binaries,
- boot_image_opts = boot_image_opts,
- boot_image_outs = None if dtb_list else ["boot.img", "init_boot.img"],
- in_tree_module_list = in_tree_module_list,
- )
- _define_kernel_dist(
- target,
- msm_target,
- variant,
- boot_image_opts = boot_image_opts,
- )
- _define_uapi_library(target)
- define_abl_dist(target, msm_target, variant)
- define_dtc_dist(target, msm_target, variant)
- define_extras(target)
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