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kumquat-buildroot/fs/iso9660/Config.in

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patch from janlana adding an x86 bootable iso9660 CD-ROM target
2006-04-06 20:31:14 +02:00
config BR2_TARGET_ROOTFS_ISO9660
bool "iso image"
iso9660: take into account the linux changes Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-04-03 18:55:43 +02:00
depends on (BR2_i386 || BR2_x86_64)
depends on BR2_LINUX_KERNEL
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
depends on BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX
fs/iso9660: support building a real iso9660 filesystem Until now, the iso9660 filesystem handling only supported using an initrd/initramfs to store the root filesystem, which is very different from what we do with the other filesystems. This commit changes the iso9660 logic to also allow using directly an iso9660 filesystem to store the root filesystem. A new option, BR2_TARGET_ROOTFS_ISO9660_INITRD, is created to tell the iso9660 that we want to use an initrd and not directly the root filesystem in iso9660 format. This option defaults to 'y' to preserve the existing behavior. After this commit, we therefore have three possibilities: * BR2_TARGET_ROOTFS_ISO9660=y, with BR2_TARGET_ROOTFS_INITRAMFS and BR2_TARGET_ROOTFS_ISO9660_INITRD disabled. In this case, the iso9660 filesystem is directly the contents of the root filesystem (since is possible thanks to the Rockridge extensions that were already enabled using the -R option of genisoimage). Obviously, it means that the root filesystem is read-only. * BR2_TARGET_ROOTFS_ISO9660=y and BR2_TARGET_ROOTFS_INITRAMFS=y (the value of BR2_TARGET_ROOTFS_ISO9660_INITRD doesn't matter). In this case, the root filesystem is already linked into the kernel image itself, as an initramfs. So the iso9660 filesystem doesn't contain the root filesystem as is, but just the bootloader and the kernel image. * BR2_TARGET_ROOTFS_ISO9660=y, BR2_TARGET_ROOTFS_ISO9660_INITRD=y and BR2_TARGET_ROOTFS_INITRAMFS disabled. In this case, a separate initrd is used. The iso9660 filesystem only contains the bootloader, the kernel and the initrd. In order to support the first case out of the box, root=/dev/sr0 is added on the kernel command line in the example Grub configuration file, so that the kernel knows where the root filesystem is located. This argument is ignored when initrd/initramfs are used. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:41 +02:00
select BR2_LINUX_KERNEL_INSTALL_TARGET \
if (!BR2_TARGET_ROOTFS_ISO9660_INITRD && !BR2_TARGET_ROOTFS_INITRAMFS)
patch from janlana adding an x86 bootable iso9660 CD-ROM target
2006-04-06 20:31:14 +02:00
help
fs/iso9660: support building a real iso9660 filesystem Until now, the iso9660 filesystem handling only supported using an initrd/initramfs to store the root filesystem, which is very different from what we do with the other filesystems. This commit changes the iso9660 logic to also allow using directly an iso9660 filesystem to store the root filesystem. A new option, BR2_TARGET_ROOTFS_ISO9660_INITRD, is created to tell the iso9660 that we want to use an initrd and not directly the root filesystem in iso9660 format. This option defaults to 'y' to preserve the existing behavior. After this commit, we therefore have three possibilities: * BR2_TARGET_ROOTFS_ISO9660=y, with BR2_TARGET_ROOTFS_INITRAMFS and BR2_TARGET_ROOTFS_ISO9660_INITRD disabled. In this case, the iso9660 filesystem is directly the contents of the root filesystem (since is possible thanks to the Rockridge extensions that were already enabled using the -R option of genisoimage). Obviously, it means that the root filesystem is read-only. * BR2_TARGET_ROOTFS_ISO9660=y and BR2_TARGET_ROOTFS_INITRAMFS=y (the value of BR2_TARGET_ROOTFS_ISO9660_INITRD doesn't matter). In this case, the root filesystem is already linked into the kernel image itself, as an initramfs. So the iso9660 filesystem doesn't contain the root filesystem as is, but just the bootloader and the kernel image. * BR2_TARGET_ROOTFS_ISO9660=y, BR2_TARGET_ROOTFS_ISO9660_INITRD=y and BR2_TARGET_ROOTFS_INITRAMFS disabled. In this case, a separate initrd is used. The iso9660 filesystem only contains the bootloader, the kernel and the initrd. In order to support the first case out of the box, root=/dev/sr0 is added on the kernel command line in the example Grub configuration file, so that the kernel knows where the root filesystem is located. This argument is ignored when initrd/initramfs are used. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:41 +02:00
Build a bootable ISO9660 image. By default, the root
filesystem is directly packed as the ISO9660 filesystem,
which means the root filesystem will be read-only. It
requires ISO9660 filesystem support and CDROM support in the
kernel.
However, if BR2_TARGET_ROOTFS_INITRAMFS or
BR2_TARGET_ROOTFS_ISO9660_INITRD have been enabled, the
ISO9660 filesystem will only contain a kernel image and
optionally an external initrd image. In this case, the
filesystem being in RAM, it will be read/write. No ISO9660
or CDROM support is needed in the kernel.
patch from janlana adding an x86 bootable iso9660 CD-ROM target
2006-04-06 20:31:14 +02:00
fs/iso9660: use if ... endif block instead of depends on In preparation to the addition of numerous additional options to the iso9660 filesystem logic, use a if ... endif block instead of a depends on for the only option that currently exists. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Samuel Martin <s.martin49@gmail.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:34 +02:00
if BR2_TARGET_ROOTFS_ISO9660
fs/iso9660: introduce bootloader choice In preparation to the introduction for the support of other bootloaders than Grub, this commit adds a "choice ... endchoice" block with just the Grub option, and adds some conditionals in the iso9660.mk code for the Grub specific parts. Of course, for now those conditionals are a bit useless with just this commit, but they become useful with the followup commits. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:43 +02:00
choice
prompt "Bootloader"
fs/iso9660: add support for grub2 After having extended the iso9660 support to allow isolinux as an alternative to grub, this commit adds grub2 as a third alternative. With the previous work done to support isolinux, adding support for grub2 is fairly trivial. [Thomas: set timeout to 10 seconds and not 5 seconds, in order to match the configuration used for grub.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:48 +02:00
config BR2_TARGET_ROOTFS_ISO9660_GRUB2
bool "grub2"
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
depends on BR2_TARGET_GRUB2
fs/iso9660: add support for hybrid image using Grub2 on BIOS and EFI Add support for building an hybrid ISO9660 image compatible with legacy and UEFI BIOS. Note that this is not about an (iso)hybrid image, which can boot from both a CDROM or a USB stick, but really about an image being bootable from the legay BIOS or EFI; the two are orthognal. The option -eltorito-alt-boot need to be used in the xorriso command to generate the hybrid image. That option is a separator, meaning the previous boot entry is done, and the following boot options define a new boot entry. The -no-emul-boot defines the type of the current boot image; that's why it has to now be repeated in each of the BIOS and EFI options. Finally, for symetry and consistency between the BIOS and EFI options, we move the BIOS image option first. Note: the BIOS boot image options have to be provided before the EFI ones, or the system won't boot; the underlying reason is not known... Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: - note about hybrid vs. (iso)hybrid - explain -eltorito-alt-boot - explain duplication of -no-emul-boot - rename the variables - note about the BIOS-EFI ordering ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:23 +02:00
select BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER \
if BR2_TARGET_GRUB2_I386_PC
select BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER \
if (BR2_TARGET_GRUB2_I386_EFI || BR2_TARGET_GRUB2_X86_64_EFI)
fs/iso9660: add support for grub2 After having extended the iso9660 support to allow isolinux as an alternative to grub, this commit adds grub2 as a third alternative. With the previous work done to support isolinux, adding support for grub2 is fairly trivial. [Thomas: set timeout to 10 seconds and not 5 seconds, in order to match the configuration used for grub.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:48 +02:00
help
Use Grub 2 as the bootloader for the ISO9660 image. Make
sure to enable the 'iso9660' module in
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
BR2_TARGET_GRUB2_BUILTIN_MODULES_PC or
BR2_TARGET_GRUB2_BUILTIN_MODULES_EFI. Use 'cd' as the boot
partition in BR2_TARGET_GRUB2_BOOT_PARTITION= for GRUB on BIOS
or 'set root=(cd0)' in the configuration file passed to
BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI for GRUB on EFI.
fs/iso9660: add support for grub2 After having extended the iso9660 support to allow isolinux as an alternative to grub, this commit adds grub2 as a third alternative. With the previous work done to support isolinux, adding support for grub2 is fairly trivial. [Thomas: set timeout to 10 seconds and not 5 seconds, in order to match the configuration used for grub.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:48 +02:00
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
config BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
bool "isolinux"
depends on BR2_TARGET_SYSLINUX_ISOLINUX
fs/iso9660: add support for hybrid image using Grub2 on BIOS and EFI Add support for building an hybrid ISO9660 image compatible with legacy and UEFI BIOS. Note that this is not about an (iso)hybrid image, which can boot from both a CDROM or a USB stick, but really about an image being bootable from the legay BIOS or EFI; the two are orthognal. The option -eltorito-alt-boot need to be used in the xorriso command to generate the hybrid image. That option is a separator, meaning the previous boot entry is done, and the following boot options define a new boot entry. The -no-emul-boot defines the type of the current boot image; that's why it has to now be repeated in each of the BIOS and EFI options. Finally, for symetry and consistency between the BIOS and EFI options, we move the BIOS image option first. Note: the BIOS boot image options have to be provided before the EFI ones, or the system won't boot; the underlying reason is not known... Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: - note about hybrid vs. (iso)hybrid - explain -eltorito-alt-boot - explain duplication of -no-emul-boot - rename the variables - note about the BIOS-EFI ordering ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:23 +02:00
select BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
fs/iso9660: introduce bootloader choice In preparation to the introduction for the support of other bootloaders than Grub, this commit adds a "choice ... endchoice" block with just the Grub option, and adds some conditionals in the iso9660.mk code for the Grub specific parts. Of course, for now those conditionals are a bit useless with just this commit, but they become useful with the followup commits. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:43 +02:00
endchoice
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
config BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER
fs/iso9660: add support for hybrid image using Grub2 on BIOS and EFI Add support for building an hybrid ISO9660 image compatible with legacy and UEFI BIOS. Note that this is not about an (iso)hybrid image, which can boot from both a CDROM or a USB stick, but really about an image being bootable from the legay BIOS or EFI; the two are orthognal. The option -eltorito-alt-boot need to be used in the xorriso command to generate the hybrid image. That option is a separator, meaning the previous boot entry is done, and the following boot options define a new boot entry. The -no-emul-boot defines the type of the current boot image; that's why it has to now be repeated in each of the BIOS and EFI options. Finally, for symetry and consistency between the BIOS and EFI options, we move the BIOS image option first. Note: the BIOS boot image options have to be provided before the EFI ones, or the system won't boot; the underlying reason is not known... Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: - note about hybrid vs. (iso)hybrid - explain -eltorito-alt-boot - explain duplication of -no-emul-boot - rename the variables - note about the BIOS-EFI ordering ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:23 +02:00
bool
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
config BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER
fs/iso9660: add support for hybrid image using Grub2 on BIOS and EFI Add support for building an hybrid ISO9660 image compatible with legacy and UEFI BIOS. Note that this is not about an (iso)hybrid image, which can boot from both a CDROM or a USB stick, but really about an image being bootable from the legay BIOS or EFI; the two are orthognal. The option -eltorito-alt-boot need to be used in the xorriso command to generate the hybrid image. That option is a separator, meaning the previous boot entry is done, and the following boot options define a new boot entry. The -no-emul-boot defines the type of the current boot image; that's why it has to now be repeated in each of the BIOS and EFI options. Finally, for symetry and consistency between the BIOS and EFI options, we move the BIOS image option first. Note: the BIOS boot image options have to be provided before the EFI ones, or the system won't boot; the underlying reason is not known... Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: - note about hybrid vs. (iso)hybrid - explain -eltorito-alt-boot - explain duplication of -no-emul-boot - rename the variables - note about the BIOS-EFI ordering ] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:23 +02:00
bool
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
patch from janlana adding an x86 bootable iso9660 CD-ROM target
2006-04-06 20:31:14 +02:00
config BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU
fs: iso9660: change boot menu entry text Replace Grub-specific "menu.lst" with "menu config" in the BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU Kconfig entry text, and mention missing grub.cfg for Grub 2. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-08-11 23:23:50 +02:00
string "Boot menu config file"
fs/iso9660: add support for grub2 After having extended the iso9660 support to allow isolinux as an alternative to grub, this commit adds grub2 as a third alternative. With the previous work done to support isolinux, adding support for grub2 is fairly trivial. [Thomas: set timeout to 10 seconds and not 5 seconds, in order to match the configuration used for grub.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:48 +02:00
default "fs/iso9660/grub.cfg" if BR2_TARGET_ROOTFS_ISO9660_GRUB2
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
default "fs/iso9660/isolinux.cfg" if BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
fs/iso9660: prepare cleaner kernel/initrd path handling The iso9660.mk modifies the menu.lst file from Grub to set the correct initrd/kernel image locations. However, with the upcoming support of other bootloaders for iso9660 filesystems, we need to modify a bit this logic. Instead of relying on the specific details of the grub menu.lst syntax, we introduce the __KERNEL_PATH__ and __INITRD_PATH__ magic keywords, which iso9660.mk will replace by the appropriate values. They can therefore be used where needed in grub menu.lst, and in similar configuration files of other bootloaders, as will be supported in the following commits. Also, in order to be consistent with the soon to be introduced support for having the root filesystem itself as iso9660, this commit changes the installation location of the initrd and kernel. Instead of being /initrd and /kernel, they become /boot/initrd and /boot/$(LINUX_IMAGE_NAME). Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Samuel Martin <s.martin49@gmail.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:40 +02:00
help
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
Use this option to provide a custom bootloader configuration
fs/iso9660: remove support for grub grub will be removed soon. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2017-08-11 18:10:15 +02:00
file (grub.cfg for Grub 2, isolinux.cfg for isolinux).
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
Note that the strings __KERNEL_PATH__ and __INITRD_PATH__
will automatically be replaced by the path to the kernel and
fs/iso9660: prepare cleaner kernel/initrd path handling The iso9660.mk modifies the menu.lst file from Grub to set the correct initrd/kernel image locations. However, with the upcoming support of other bootloaders for iso9660 filesystems, we need to modify a bit this logic. Instead of relying on the specific details of the grub menu.lst syntax, we introduce the __KERNEL_PATH__ and __INITRD_PATH__ magic keywords, which iso9660.mk will replace by the appropriate values. They can therefore be used where needed in grub menu.lst, and in similar configuration files of other bootloaders, as will be supported in the following commits. Also, in order to be consistent with the soon to be introduced support for having the root filesystem itself as iso9660, this commit changes the installation location of the initrd and kernel. Instead of being /initrd and /kernel, they become /boot/initrd and /boot/$(LINUX_IMAGE_NAME). Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Samuel Martin <s.martin49@gmail.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:40 +02:00
initrd images respectively.
target/iso9660: needs a linux kernel Closes #403. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2009-07-27 00:05:14 +02:00
fs/iso9660: support building a real iso9660 filesystem Until now, the iso9660 filesystem handling only supported using an initrd/initramfs to store the root filesystem, which is very different from what we do with the other filesystems. This commit changes the iso9660 logic to also allow using directly an iso9660 filesystem to store the root filesystem. A new option, BR2_TARGET_ROOTFS_ISO9660_INITRD, is created to tell the iso9660 that we want to use an initrd and not directly the root filesystem in iso9660 format. This option defaults to 'y' to preserve the existing behavior. After this commit, we therefore have three possibilities: * BR2_TARGET_ROOTFS_ISO9660=y, with BR2_TARGET_ROOTFS_INITRAMFS and BR2_TARGET_ROOTFS_ISO9660_INITRD disabled. In this case, the iso9660 filesystem is directly the contents of the root filesystem (since is possible thanks to the Rockridge extensions that were already enabled using the -R option of genisoimage). Obviously, it means that the root filesystem is read-only. * BR2_TARGET_ROOTFS_ISO9660=y and BR2_TARGET_ROOTFS_INITRAMFS=y (the value of BR2_TARGET_ROOTFS_ISO9660_INITRD doesn't matter). In this case, the root filesystem is already linked into the kernel image itself, as an initramfs. So the iso9660 filesystem doesn't contain the root filesystem as is, but just the bootloader and the kernel image. * BR2_TARGET_ROOTFS_ISO9660=y, BR2_TARGET_ROOTFS_ISO9660_INITRD=y and BR2_TARGET_ROOTFS_INITRAMFS disabled. In this case, a separate initrd is used. The iso9660 filesystem only contains the bootloader, the kernel and the initrd. In order to support the first case out of the box, root=/dev/sr0 is added on the kernel command line in the example Grub configuration file, so that the kernel knows where the root filesystem is located. This argument is ignored when initrd/initramfs are used. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:41 +02:00
config BR2_TARGET_ROOTFS_ISO9660_INITRD
bool "Use initrd"
default y
select BR2_TARGET_ROOTFS_CPIO
help
Enable this option to have the root filesystem bundled as an
initrd/initramfs rather than directly as the ISO9660
filesystem. With this option enabled, the ISO9660 will only
contain a kernel image, an initrd image (unless an initramfs
linked into the kernel is used) and the bootloader.
fs/iso9660: add option for transparent (de)compression Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> [Thomas: rename option to BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-12-20 22:27:42 +01:00
config BR2_TARGET_ROOTFS_ISO9660_TRANSPARENT_COMPRESSION
bool "transparent compression"
depends on !BR2_TARGET_ROOTFS_ISO9660_INITRD
depends on !BR2_TARGET_ROOTFS_INITRAMFS
help
Say 'y' to enable use of transparent (de)compression. Files
are stored compressed and will be decompressed on-the-fly
upon access at runtime.
fs/iso9660: add hybrid image support This commit adds a new option, which allows, when isolinux is used as the bootloader, to generate an "hybrid" ISO image. Such images can either be booted from CD-ROM or from USB keys. It simply uses the isohybrid tool provided by syslinux. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:46 +02:00
config BR2_TARGET_ROOTFS_ISO9660_HYBRID
bool "Build hybrid image"
depends on BR2_TARGET_ROOTFS_ISO9660_ISOLINUX
help
Enable this option to build an hybrid image, i.e an image
which can either be booted from a CD-ROM or from a device
which BIOS considers a hard disk or ZIP disk, e.g. a USB key
or similar.
fs/iso9660: use if ... endif block instead of depends on In preparation to the addition of numerous additional options to the iso9660 filesystem logic, use a if ... endif block instead of a depends on for the only option that currently exists. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Samuel Martin <s.martin49@gmail.com> Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:34 +02:00
endif
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
comment "iso image needs a Linux kernel and either grub2 or isolinux to be built"
Config.in files: add missing dependencies to toolchain option comments When a package A depends on config option B and toolchain option C, then the comment that is given when C is not fulfilled should also depend on B. For example: config BR2_PACKAGE_A depends on BR2_B depends on BR2_LARGEFILE depends on BR2_WCHAR comment "A needs a toolchain w/ largefile, wchar" depends on !BR2_LARGEFILE || !BR2_WCHAR This comment should actually be: comment "A needs a toolchain w/ largefile, wchar" depends on BR2_B depends on !BR2_LARGEFILE || !BR2_WCHAR or if possible (typically when B is a package config option declared in that same Config.in file): if BR2_B comment "A needs a toolchain w/ largefile, wchar" depends on !BR2_LARGEFILE || !BR2_WCHAR [other config options depending on B] endif Otherwise, the comment would be visible even though the other dependencies are not met. This patch adds such missing dependencies, and changes existing such dependencies from depends on BR2_BASE_DEP && !BR2_TOOLCHAIN_USES_GLIBC to depends on BR2_BASE_DEP depends on !BR2_TOOLCHAIN_USES_GLIBC so that (positive) base dependencies are separate from the (negative) toolchain dependencies. This strategy makes it easier to write such comments (because one can simply copy the base dependency from the actual package config option), but also avoids complex and long boolean expressions. Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> (untested) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2013-11-07 09:24:37 +01:00
depends on BR2_i386 || BR2_x86_64
fs/iso9660: add isolinux support After all the preparation commits, this commit finally adds the iso9660 support itself. Besides adding a new Config.in entry, a little bit of .mk code and the isolinux.cfg default configuration, not much is needed. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2015-06-09 00:21:45 +02:00
depends on !BR2_LINUX_KERNEL || \
fs/iso9660: add support to Grub EFI bootloader in the image Add support to boot the Grub bootloader from an EFI BIOS in the ISO9660 image. For that we need to create EFI System Partition (ESP). The ESP is a vfat partition which contain the Grub2 binary at the /EFI/BOOT/ location. xorriso command will generate the iso image including the ESP. We notice Grub can not read and mount the ESP, therefore we place the Grub configuration file in the ISO9660 partition. A Grub2 builtin configuration need to be used to tell Grub2 to search automatically its configuration file in the ISO9660 partition. Use 'set root=(cd0)' in the configuration file passed to BR2_TARGET_GRUB2_BUILTIN_CONFIG_EFI. Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> [yann.morin.1998@free.fr: fix timestamp fixup hook] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2021-09-23 17:57:22 +02:00
!(BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX)
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