fs/iso9660, grub2 : grub-eltorito.img not found during the generation of rootfs.iso9660
Hi everybody,
I am trying Buildroot_2016.11.2 and I have an issue during the generation of an iso rootfs.
My target is an "x86-64-efi" system.
The error is the following one :
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Generating root filesystem image rootfs.iso9660
/usr/bin/install -D -m 0644 fs/iso9660/grub.cfg /home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub.cfg/bin/sed -i -e "s%__KERNEL_PATH__%/boot/bzImage%" /home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub.cfg/usr/bin/install -D -m 0644 /home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/grub-eltorito.img /home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub-eltorito.img /usr/bin/install: impossible d'?valuer ? /home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/grub-eltorito.img ?: Aucun fichier ou dossier de ce typefs/iso9660/iso9660.mk:160: recipe for target '/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/rootfs.iso9660' failed
make: *** [/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/rootfs.iso9660] Error 1
If I check the makefile for Grub2, I find that the grub-eltorito.img file is created for only i386_pc target. See boot/grub2.mk, lines 80 to 85.
ifeq ($(BR2_TARGET_GRUB2_I386_PC),y)
define GRUB2_IMAGE_INSTALL_ELTORITO
cat $(HOST_DIR)/usr/lib/grub/$(GRUB2_TUPLE)/cdboot.img $(GRUB2_IMAGE) > \
$(BINARIES_DIR)/grub-eltorito.imgendef
endif
But in iso9660.mk, the only condition for installing grub-eltorito.img is the use of rootfs_iso9660_grub2 as seen lines 56 to 64 :
else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2),y)ROOTFS_ISO9660_DEPENDENCIES += grub2
ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/grub.cfg
ROOTFS_ISO9660_BOOT_IMAGE = boot/grub/grub-eltorito.img
define ROOTFS_ISO9660_INSTALL_BOOTLOADER
$(INSTALL) -D -m 0644 $(BINARIES_DIR)/grub-eltorito.img \
$(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/grub-eltorito.imgendef
Is it a bug ? Or I misunderstood anything ?
If it is a bug, I lack some informations for patching my own installation with a convenient manner :
Is grub-eltorito.img still relevant when using Grub2 ?
If yes, should grub-eltorito.img be just built with i386_pc ? Must I have to add x86_64_efi target ?
Thank you a lot for your responses.
Arnaud
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Hi Arnaud,
Quoted 49 lines · arnaud.miche at orange.com
Hi everybody,
I am trying Buildroot_2016.11.2 and I have an issue during the generation of an iso rootfs.
My target is an "x86-64-efi" system.
The error is the following one :
===================*>>> Generating root filesystem image rootfs.iso9660
/usr/bin/install-D -m 0644fs/iso9660/grub.cfg/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub.cfg/bin/sed-i -e "s%__KERNEL_PATH__%/boot/bzImage%"/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub.cfg/usr/bin/install-D -m 0644/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/grub-eltorito.img/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/build/rootfs.iso9660.tmp/boot/grub/grub-eltorito.img/usr/bin/install: impossible d'?valuer
?/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/grub-eltorito.img?:
Aucun fichier ou dossier de ce typefs/iso9660/iso9660.mk:160: recipe for target '/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/rootfs.iso9660' failed
make: *** [/home/arnaud/Developments/Projects/Linux_Firmware/Buildroot_2016.11.2/buildroot-2016.11.2/output/images/rootfs.iso9660] Error 1*If I check the makefile for Grub2, I find that the grub-eltorito.img file is created for only
i386_pctarget. Seeboot/grub2.mk, lines 80 to 85.*ifeq ($(BR2_TARGET_GRUB2_I386_PC),y)
defineGRUB2_IMAGE_INSTALL_ELTORITOcat $(HOST_DIR)/usr/lib/grub/$(GRUB2_TUPLE)/cdboot.img $(GRUB2_IMAGE) > \ $(BINARIES_DIR)/grub-eltorito.imgendef
endif*But in iso9660.mk, the only condition for installing grub-eltorito.img is the use of
rootfs_iso9660_grub2as seen lines 56 to 64 :*else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2),y)
ROOTFS_ISO9660_DEPENDENCIES+= grub2ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \ $(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/grub.cfg ROOTFS_ISO9660_BOOT_IMAGE = boot/grub/grub-eltorito.img define ROOTFS_ISO9660_INSTALL_BOOTLOADER $(INSTALL) -D -m 0644 $(BINARIES_DIR)/grub-eltorito.img \ $(ROOTFS_ISO9660_TARGET_DIR)/boot/grub/grub-eltorito.img
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endef
*Is it a bug ? Or I misunderstood anything ?
Yes, this is a bug. iso9660 support in Buildroot is not used a lot so it tends
to be brittle.
Quoted 4 lines
If it is a bug, I lack some informations for patching my own installation with a convenient manner :
Is grub-eltorito.img still relevant when using Grub2 ?
It certainly is.
Quoted 2 lines
If yes, should grub-eltorito.img be just built with
i386_pc? Must I have to addx86_64_efitarget ?
As I understand it, the eltorito-style bootable CDROM only makes sense with
legacy BIOS (i.e. i386-pc). For EFI, I think you need to add an addition (FAT?) filesystem track to the iso image. You can read up on it on [1].
The simplest solution is to limit the iso9660 grub2 support to i386-pc.
The proper solution is to add EFI support to iso9660.mk. But that requires more
investigation.
I'll send a patch implementing the first solution.
Regards,
Arnout
[1] http://wiki.osdev.org/El-Torito
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Thank you a lot for your responses.
Arnaud
_________________________________________________________________________________________________________________________
Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci.
This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation.
If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you._______________________________________________
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Arnout Vandecappelle arnout at mind be Senior Embedded Software Architect +32-16-286500 Essensium/Mind http://www.mind.be G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle GPG fingerprint: 7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF
PATCH 1/1 fs/iso9660: doesn't support (grub2) EFI
The iso9660 generation for grub2 assumes that grub-eltorito.img is available. However, this image is only available for the i386-pc target (i.e. legacy BIOS). An EFI-bootable iso9660 requires a different layout.
Since we currently can't generate the EFI-bootable iso9660 layout, require the i386-pc target to be selected in grub.
--- fs/iso9660/Config.in | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
fs/iso9660/Config.in +4 -4
@@ -3,7 +3,7 @@ config BR2_TARGET_ROOTFS_ISO9660 depends on (BR2_i386 || BR2_x86_64) depends on BR2_LINUX_KERNEL depends on BR2_TARGET_GRUB || \ - BR2_TARGET_GRUB2 || \ + BR2_TARGET_GRUB2_I386_PC || \ BR2_TARGET_SYSLINUX_ISOLINUX select BR2_LINUX_KERNEL_INSTALL_TARGET \ if (!BR2_TARGET_ROOTFS_ISO9660_INITRD && !BR2_TARGET_ROOTFS_INITRAMFS)
@@ -33,7 +33,7 @@ config BR2_TARGET_ROOTFS_ISO9660_GRUB config BR2_TARGET_ROOTFS_ISO9660_GRUB2 bool "grub2" - depends on BR2_TARGET_GRUB2 + depends on BR2_TARGET_GRUB2_I386_PC help Use Grub 2 as the bootloader for the ISO9660 image. Make sure to enable the 'iso9660' module in
@@ -82,7 +82,7 @@ config BR2_TARGET_ROOTFS_ISO9660_HYBRID endif -comment "iso image needs a Linux kernel and one of grub, grub2 or isolinux to be built" +comment "iso image needs a Linux kernel and one of grub, grub2 i386-pc or isolinux to be built" depends on BR2_i386 || BR2_x86_64 depends on !BR2_LINUX_KERNEL || \ - !(BR2_TARGET_GRUB || BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX) + !(BR2_TARGET_GRUB || BR2_TARGET_GRUB2_I386_PC || BR2_TARGET_SYSLINUX_ISOLINUX)
Signature · 1 line
2.11.0
PATCH 1/1 fs/iso9660: doesn't support (grub2) EFI
Arnout, All,
On 2017-03-01 21:05 +0100, Arnout Vandecappelle (Essensium/Mind) spake thusly:
Quoted 9 lines
The iso9660 generation for grub2 assumes that grub-eltorito.img is available. However, this image is only available for the i386-pc target (i.e. legacy BIOS). An EFI-bootable iso9660 requires a different layout.
Since we currently can't generate the EFI-bootable iso9660 layout, require the i386-pc target to be selected in grub.
Reported-by arnaud.miche at orange.com
Regards,
Yann E. MORIN.
Quoted 43 lines
--- fs/iso9660/Config.in | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)fs/iso9660/Config.in +4
-4@@ -3,7 +3,7 @@ config BR2_TARGET_ROOTFS_ISO9660 depends on (BR2_i386 || BR2_x86_64) depends on BR2_LINUX_KERNEL depends on BR2_TARGET_GRUB || \ - BR2_TARGET_GRUB2 || \ + BR2_TARGET_GRUB2_I386_PC || \ BR2_TARGET_SYSLINUX_ISOLINUX select BR2_LINUX_KERNEL_INSTALL_TARGET \ if (!BR2_TARGET_ROOTFS_ISO9660_INITRD && !BR2_TARGET_ROOTFS_INITRAMFS)@@ -33,7 +33,7 @@ config BR2_TARGET_ROOTFS_ISO9660_GRUB config BR2_TARGET_ROOTFS_ISO9660_GRUB2 bool "grub2" - depends on BR2_TARGET_GRUB2 + depends on BR2_TARGET_GRUB2_I386_PC help Use Grub 2 as the bootloader for the ISO9660 image. Make sure to enable the 'iso9660' module in@@ -82,7 +82,7 @@ config BR2_TARGET_ROOTFS_ISO9660_HYBRID endif -comment "iso image needs a Linux kernel and one of grub, grub2 or isolinux to be built" +comment "iso image needs a Linux kernel and one of grub, grub2 i386-pc or isolinux to be built" depends on BR2_i386 || BR2_x86_64 depends on !BR2_LINUX_KERNEL || \ - !(BR2_TARGET_GRUB || BR2_TARGET_GRUB2 || BR2_TARGET_SYSLINUX_ISOLINUX) + !(BR2_TARGET_GRUB || BR2_TARGET_GRUB2_I386_PC || BR2_TARGET_SYSLINUX_ISOLINUX)Signature · 6 lines
2.11.0 _______________________________________________ buildroot mailing list buildroot at busybox.net http://lists.busybox.net/mailman/listinfo/buildroot
Signature · 6 lines
.-----------------.--------------------.------------------.--------------------. | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: | | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ | | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no | | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. | '------------------------------^-------^------------------^--------------------'
Thomas Petazzoni
AppliedPATCH 1/1 fs/iso9660: doesn't support (grub2) EFI
In reply to Arnout Vandecappelle (Essensium/Mind)Hello,
Quoted 4 lines · Arnout Vandecappelle (Essensium/Mind)
The iso9660 generation for grub2 assumes that grub-eltorito.img is available. However, this image is only available for the i386-pc target (i.e. legacy BIOS). An EFI-bootable iso9660 requires a different layout.
Quoted 8 lines
Since we currently can't generate the EFI-bootable iso9660 layout, require the i386-pc target to be selected in grub.
Reported-by arnaud.miche at orange.com--- fs/iso9660/Config.in | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
Applied to master, thanks. Peter, I believe this one qualifies for the LTS branch.
Thomas
Signature · 3 lines
Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
PATCH 1/1 fs/iso9660: doesn't support (grub2) EFI
Quoted 12 lines
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"Thomas" == Thomas Petazzoni <[email protected]> writes:
Hello,
Quoted 7 lines · Arnout Vandecappelle (Essensium/Mind)
The iso9660 generation for grub2 assumes that grub-eltorito.img is available. However, this image is only available for the i386-pc target (i.e. legacy BIOS). An EFI-bootable iso9660 requires a different layout.
Since we currently can't generate the EFI-bootable iso9660 layout, require the i386-pc target to be selected in grub.
Quoted 8 lines
Quoted 5 lines
Reported-by arnaud.miche at orange.com---
fs/iso9660/Config.in| 8 ++++----1 file changed, 4 insertions(+), 4 deletions(-)Applied to master, thanks. Peter, I believe this one qualifies for the LTS branch.
Committed to 2017.02.x, thanks.
Signature · 1 line
Bye, Peter Korsgaard