initial buildroot for linux 5.15
This commit is contained in:
Huan.Feng
@@ -0,0 +1,102 @@
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config BR2_TARGET_ROOTFS_ISO9660
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bool "iso image"
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depends on (BR2_i386 || BR2_x86_64)
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depends on BR2_LINUX_KERNEL
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depends on BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX
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select BR2_LINUX_KERNEL_INSTALL_TARGET \
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if (!BR2_TARGET_ROOTFS_ISO9660_INITRD && !BR2_TARGET_ROOTFS_INITRAMFS)
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help
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Build a bootable ISO9660 image. By default, the root
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filesystem is directly packed as the ISO9660 filesystem,
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which means the root filesystem will be read-only. It
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requires ISO9660 filesystem support and CDROM support in the
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kernel.
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However, if BR2_TARGET_ROOTFS_INITRAMFS or
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BR2_TARGET_ROOTFS_ISO9660_INITRD have been enabled, the
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ISO9660 filesystem will only contain a kernel image and
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optionally an external initrd image. In this case, the
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filesystem being in RAM, it will be read/write. No ISO9660
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or CDROM support is needed in the kernel.
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if BR2_TARGET_ROOTFS_ISO9660
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choice
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prompt "Bootloader"
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config BR2_TARGET_ROOTFS_ISO9660_GRUB2
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bool "grub2"
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depends on BR2_TARGET_GRUB2
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select BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER \
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if BR2_TARGET_GRUB2_I386_PC
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select BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER \
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if (BR2_TARGET_GRUB2_I386_EFI || BR2_TARGET_GRUB2_X86_64_EFI)
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help
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Use Grub 2 as the bootloader for the ISO9660 image. Make
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sure to enable the 'iso9660' module in
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BR2_TARGET_GRUB2_BUILTIN_MODULES_PC or
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BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI. Use 'cd' as the boot
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partition in BR2_TARGET_GRUB2_BOOT_PARTITION= for GRUB on BIOS
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or 'set root=(cd0)' in the configuration file passed to
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BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI for GRUB on EFI.
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config BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
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bool "isolinux"
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depends on BR2_TARGET_SYSLINUX_ISOLINUX
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select BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER
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endchoice
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config BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER
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bool
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config BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER
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bool
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config BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU
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string "Boot menu config file"
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default "fs/iso9660/grub.cfg" if BR2_TARGET_ROOTFS_ISO9660_GRUB2
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default "fs/iso9660/isolinux.cfg" if BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
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help
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Use this option to provide a custom bootloader configuration
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file (grub.cfg for Grub 2, isolinux.cfg for isolinux).
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Note that the strings __KERNEL_PATH__ and __INITRD_PATH__
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will automatically be replaced by the path to the kernel and
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initrd images respectively.
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config BR2_TARGET_ROOTFS_ISO9660_INITRD
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bool "Use initrd"
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default y
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select BR2_TARGET_ROOTFS_CPIO
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help
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Enable this option to have the root filesystem bundled as an
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initrd/initramfs rather than directly as the ISO9660
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filesystem. With this option enabled, the ISO9660 will only
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contain a kernel image, an initrd image (unless an initramfs
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linked into the kernel is used) and the bootloader.
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config BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION
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bool "transparent compression"
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depends on !BR2_TARGET_ROOTFS_ISO9660_INITRD
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depends on !BR2_TARGET_ROOTFS_INITRAMFS
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help
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Say 'y' to enable use of transparent (de)compression. Files
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are stored compressed and will be decompressed on-the-fly
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upon access at runtime.
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config BR2_TARGET_ROOTFS_ISO9660_HYBRID
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bool "Build hybrid image"
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depends on BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
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help
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Enable this option to build an hybrid image, i.e an image
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which can either be booted from a CD-ROM or from a device
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which BIOS considers a hard disk or ZIP disk, e.g. a USB key
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or similar.
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endif
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comment "iso image needs a Linux kernel and either grub2 or isolinux to be built"
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depends on BR2_i386 || BR2_x86_64
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depends on !BR2_LINUX_KERNEL || \
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!(BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX)
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@@ -0,0 +1,7 @@
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set default="0"
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set timeout="10"
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menuentry "Buildroot" {
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linux __KERNEL_PATH__ root=/dev/sr0
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initrd __INITRD_PATH__
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}
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@@ -0,0 +1,197 @@
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################################################################################
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#
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# Build the iso96600 root filesystem image
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#
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################################################################################
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#
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# We need to handle three cases:
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#
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# 1. The ISO9660 filesystem will really be the real root filesystem
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# itself. This is when BR2_TARGET_ROOTFS_ISO9660_INITRD is
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# disabled.
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#
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# 2. The ISO9660 filesystem will be a filesystem with just a kernel
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# image, initrd and grub. This is when
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# BR2_TARGET_ROOTFS_ISO9660_INITRD is enabled, but
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# BR2_TARGET_ROOTFS_INITRAMFS is disabled.
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#
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# 3. The ISO9660 filesystem will be a filesystem with just a kernel
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# image and grub. This is like (2), except that the initrd is
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# built into the kernel image. This is when
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# BR2_TARGET_ROOTFS_INITRAMFS is enabled (regardless of the value
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# of BR2_TARGET_ROOTFS_ISO9660_INITRD).
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ROOTFS_ISO9660_BOOT_MENU = $(call qstrip,$(BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU))
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ROOTFS_ISO9660_DEPENDENCIES = host-xorriso linux
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ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)
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ROOTFS_ISO9660_USE_INITRD = YES
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endif
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_INITRD),y)
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ROOTFS_ISO9660_USE_INITRD = YES
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endif
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ifeq ($(ROOTFS_ISO9660_USE_INITRD),YES)
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ROOTFS_ISO9660_TMP_TARGET_DIR = $(FS_DIR)/rootfs.iso9660.tmp
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define ROOTFS_ISO9660_CREATE_TEMPDIR
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$(RM) -rf $(ROOTFS_ISO9660_TMP_TARGET_DIR)
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mkdir -p $(ROOTFS_ISO9660_TMP_TARGET_DIR)
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endef
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_CREATE_TEMPDIR
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else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION),y)
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ROOTFS_ISO9660_DEPENDENCIES += host-zisofs-tools
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ROOTFS_ISO9660_TMP_TARGET_DIR = $(FS_DIR)/rootfs.iso9660.tmp
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# This must be early, before we copy the bootloader files.
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define ROOTFS_ISO9660_MKZFTREE
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$(RM) -rf $(ROOTFS_ISO9660_TMP_TARGET_DIR)
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$(HOST_DIR)/bin/mkzftree -X -z 9 -p $(PARALLEL_JOBS) \
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$(TARGET_DIR) \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)
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endef
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_MKZFTREE
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ROOTFS_ISO9660_OPTS += -z
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else
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ROOTFS_ISO9660_TMP_TARGET_DIR = $(TARGET_DIR)
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endif
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ifeq ($(BR2_REPRODUCIBLE),y)
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ROOTFS_ISO9660_VFAT_OPTS = --invariant
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ROOTFS_ISO9660_FIX_TIME = touch -d @$(SOURCE_DATE_EPOCH)
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else
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ROOTFS_ISO9660_FIX_TIME = :
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endif
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),yy)
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ROOTFS_ISO9660_DEPENDENCIES += grub2
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ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
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ROOTFS_ISO9660_BOOT_IMAGE = boot/grub/grub-eltorito.img
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define ROOTFS_ISO9660_INSTALL_BOOTLOADER_BIOS
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$(INSTALL) -D -m 0644 $(BINARIES_DIR)/grub-eltorito.img \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub-eltorito.img
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endef
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endif
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),yy)
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ROOTFS_ISO9660_DEPENDENCIES += grub2 host-dosfstools host-mtools
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ROOTFS_ISO9660_EFI_PARTITION = boot/fat.efi
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ROOTFS_ISO9660_EFI_PARTITION_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_EFI_PARTITION)
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ROOTFS_ISO9660_EFI_PARTITION_CONTENT = $(BINARIES_DIR)/efi-part
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ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
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define ROOTFS_ISO9660_INSTALL_BOOTLOADER_EFI
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rm -rf $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
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mkdir -p $(dir $(ROOTFS_ISO9660_EFI_PARTITION_PATH))
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dd if=/dev/zero of=$(ROOTFS_ISO9660_EFI_PARTITION_PATH) bs=1M count=1
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$(HOST_DIR)/sbin/mkfs.vfat $(ROOTFS_ISO9660_VFAT_OPTS) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
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$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/*
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$(HOST_DIR)/bin/mcopy -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) -s \
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$(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/* ::/
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$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
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endef
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endif
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_ISOLINUX),y)
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ROOTFS_ISO9660_DEPENDENCIES += syslinux
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ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/isolinux.cfg
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ROOTFS_ISO9660_BOOT_IMAGE = isolinux/isolinux.bin
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define ROOTFS_ISO9660_INSTALL_BOOTLOADER_BIOS
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$(INSTALL) -D -m 0644 $(BINARIES_DIR)/syslinux/* \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/
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$(INSTALL) -D -m 0644 $(HOST_DIR)/share/syslinux/ldlinux.c32 \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/isolinux/ldlinux.c32
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endef
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endif
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define ROOTFS_ISO9660_PREPARATION
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$(INSTALL) -D -m 0644 $(ROOTFS_ISO9660_BOOT_MENU) \
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$(ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH)
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$(SED) "s%__KERNEL_PATH__%/boot/$(LINUX_IMAGE_NAME)%" \
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$(ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH)
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$(ROOTFS_ISO9660_INSTALL_BOOTLOADER_BIOS)
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$(ROOTFS_ISO9660_INSTALL_BOOTLOADER_EFI)
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endef
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_PREPARATION
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define ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
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$(SED) '/__INITRD_PATH__/d' $(ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH)
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endef
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# Copy the kernel to temporary filesystem
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define ROOTFS_ISO9660_COPY_KERNEL
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$(INSTALL) -D -m 0644 $(LINUX_IMAGE_PATH) \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/$(LINUX_IMAGE_NAME)
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endef
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ifeq ($(ROOTFS_ISO9660_USE_INITRD),YES)
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_COPY_KERNEL
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# If initramfs is used, disable loading the initrd as the rootfs is
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# already inside the kernel image. Otherwise, make sure a cpio is
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# generated and use it as the initrd.
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ifeq ($(BR2_TARGET_ROOTFS_INITRAMFS),y)
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
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else
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ROOTFS_ISO9660_DEPENDENCIES += rootfs-cpio
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define ROOTFS_ISO9660_COPY_INITRD
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$(INSTALL) -D -m 0644 $(BINARIES_DIR)/rootfs.cpio$(ROOTFS_CPIO_COMPRESS_EXT) \
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$(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/initrd
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$(SED) "s%__INITRD_PATH__%/boot/initrd%" \
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$(ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH)
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endef
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_COPY_INITRD
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endif
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else # ROOTFS_ISO9660_USE_INITRD
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION),y)
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# We must use the uncompressed kernel image
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_COPY_KERNEL
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endif
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ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
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endif # ROOTFS_ISO9660_USE_INITRD
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ROOTFS_ISO9660_OPTS += -J -R
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ROOTFS_ISO9660_OPTS_BIOS = \
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-b $(ROOTFS_ISO9660_BOOT_IMAGE) \
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-no-emul-boot \
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-boot-load-size 4 \
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-boot-info-table
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ROOTFS_ISO9660_OPTS_EFI = \
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--efi-boot $(ROOTFS_ISO9660_EFI_PARTITION) \
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-no-emul-boot
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER)$(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),yy)
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ROOTFS_ISO9660_OPTS += \
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$(ROOTFS_ISO9660_OPTS_BIOS) \
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-eltorito-alt-boot \
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$(ROOTFS_ISO9660_OPTS_EFI)
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else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),y)
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ROOTFS_ISO9660_OPTS += $(ROOTFS_ISO9660_OPTS_BIOS)
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else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),y)
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ROOTFS_ISO9660_OPTS += $(ROOTFS_ISO9660_OPTS_EFI)
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endif
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define ROOTFS_ISO9660_CMD
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$(HOST_DIR)/bin/xorriso -as mkisofs \
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$(ROOTFS_ISO9660_OPTS) \
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-o $@ $(ROOTFS_ISO9660_TMP_TARGET_DIR)
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endef
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ifeq ($(BR2_TARGET_ROOTFS_ISO9660_HYBRID),y)
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define ROOTFS_ISO9660_GEN_HYBRID
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$(HOST_DIR)/bin/isohybrid -t 0x96 $@
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endef
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ROOTFS_ISO9660_POST_GEN_HOOKS += ROOTFS_ISO9660_GEN_HYBRID
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endif
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$(eval $(rootfs))
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@@ -0,0 +1,5 @@
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default 1
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label 1
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kernel __KERNEL_PATH__
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initrd __INITRD_PATH__
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append root=/dev/sr0
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Reference in New Issue
Block a user