From: "Yann E. MORIN" <yann.morin.1998@free.fr>
To: Kory Maincent <kory.maincent@bootlin.com>
Cc: thomas.petazzoni@bootlin.com, buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH v3 3/7] fs/iso9660: add support to Grub EFI bootloader in the image
Date: Mon, 27 Sep 2021 22:43:55 +0200 [thread overview]
Message-ID: <20210927204355.GE1504958@scaer> (raw)
In-Reply-To: <20210923155726.87851-4-kory.maincent@bootlin.com>
Köry, All,
On 2021-09-23 17:57 +0200, Kory Maincent spake thusly:
> 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>
> ---
[--SNIP--]
> diff --git a/fs/iso9660/iso9660.mk b/fs/iso9660/iso9660.mk
> index 23421a9a5c..921efa1b02 100644
> --- a/fs/iso9660/iso9660.mk
> +++ b/fs/iso9660/iso9660.mk
> @@ -57,7 +57,12 @@ else
> ROOTFS_ISO9660_TMP_TARGET_DIR = $(TARGET_DIR)
> endif
>
> -ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2),y)
> +ifeq ($(BR2_REPRODUCIBLE),y)
> +ROOTFS_ISO9660_VFAT_OPTS = --invariant
> +ROOTFS_ISO9660_FIX_TIME = touch $(SOURCE_DATE_EPOCH)
I think you may have missed something about SOURCE_DATE_EPOCH: it is a
UNIX timestamp, as a number of seconds elapsed since 1970-01-01T00:00:00+0000.
Right now, it's around 1632775187.
So, what you wrote would create a file named '1632775187' in the
Buildroot top-level directory... Probably not what is expected...
So I've changed to:
ifeq ($(BR2_REPRODUCIBLE),y)
ROOTFS_ISO9660_VFAT_OPTS = --invariant
ROOTFS_ISO9660_FIX_TIME = touch -d @$(SOURCE_DATE_EPOCH)
else
ROOTFS_ISO9660_FIX_TIME = @:
endif
... and then...
> +ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),yy)
> ROOTFS_ISO9660_DEPENDENCIES += grub2
> ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
> $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
> @@ -66,6 +71,22 @@ define ROOTFS_ISO9660_INSTALL_BOOTLOADER
> $(INSTALL) -D -m 0644 $(BINARIES_DIR)/grub-eltorito.img \
> $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub-eltorito.img
> endef
> +else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_GRUB2)$(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),yy)
> +ROOTFS_ISO9660_DEPENDENCIES += grub2 host-dosfstools host-mtools
> +ROOTFS_ISO9660_EFI_PARTITION = boot/fat.efi
> +ROOTFS_ISO9660_EFI_PARTITION_PATH = $(ROOTFS_ISO9660_TMP_TARGET_DIR)/$(ROOTFS_ISO9660_EFI_PARTITION)
> +ROOTFS_ISO9660_EFI_PARTITION_CONTENT = $(BINARIES_DIR)/efi-part
> +ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
> + $(ROOTFS_ISO9660_TMP_TARGET_DIR)/boot/grub/grub.cfg
> +define ROOTFS_ISO9660_INSTALL_BOOTLOADER
> + rm -rf $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
> + mkdir -p $(dir $(ROOTFS_ISO9660_EFI_PARTITION_PATH))
> + dd if=/dev/zero of=$(ROOTFS_ISO9660_EFI_PARTITION_PATH) bs=1M count=1
> + $(ROOTFS_ISO9660_FIX_TIME)
> + $(HOST_DIR)/sbin/mkfs.vfat $(ROOTFS_ISO9660_VFAT_OPTS) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
... here:
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/*
... and...
> + $(HOST_DIR)/bin/mcopy -p -m -i $(ROOTFS_ISO9660_EFI_PARTITION_PATH) -s \
> + $(ROOTFS_ISO9660_EFI_PARTITION_CONTENT)/* ::/
... here:
$(ROOTFS_ISO9660_FIX_TIME) $(ROOTFS_ISO9660_EFI_PARTITION_PATH)
Applied to master with the above changes, thanks.
Regards,
Yann E. MORIN.
> +endef
> else ifeq ($(BR2_TARGET_ROOTFS_ISO9660_ISOLINUX),y)
> ROOTFS_ISO9660_DEPENDENCIES += syslinux
> ROOTFS_ISO9660_BOOTLOADER_CONFIG_PATH = \
> @@ -128,9 +149,25 @@ ROOTFS_ISO9660_PRE_GEN_HOOKS += ROOTFS_ISO9660_DISABLE_EXTERNAL_INITRD
>
> endif # ROOTFS_ISO9660_USE_INITRD
>
> +ROOTFS_ISO9660_OPTS += \
> + -J \
> + -R \
> + -no-emul-boot
> +
> +ifeq ($(BR2_TARGET_ROOTFS_ISO9660_BIOS_BOOTLOADER),y)
> +ROOTFS_ISO9660_OPTS += \
> + -boot-load-size 4 \
> + -boot-info-table \
> + -b $(ROOTFS_ISO9660_BOOT_IMAGE)
> +endif
> +
> +ifeq ($(BR2_TARGET_ROOTFS_ISO9660_EFI_BOOTLOADER),y)
> +ROOTFS_ISO9660_OPTS += \
> + --efi-boot $(ROOTFS_ISO9660_EFI_PARTITION)
> +endif
> +
> define ROOTFS_ISO9660_CMD
> - $(HOST_DIR)/bin/xorriso -as mkisofs -J -R -b $(ROOTFS_ISO9660_BOOT_IMAGE) \
> - -no-emul-boot -boot-load-size 4 -boot-info-table \
> + $(HOST_DIR)/bin/xorriso -as mkisofs \
> $(ROOTFS_ISO9660_OPTS) \
> -o $@ $(ROOTFS_ISO9660_TMP_TARGET_DIR)
> endef
> --
> 2.25.1
>
> _______________________________________________
> buildroot mailing list
> buildroot@lists.buildroot.org
> https://lists.buildroot.org/mailman/listinfo/buildroot
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next prev parent reply other threads:[~2021-09-27 20:44 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-23 15:57 [Buildroot] [PATCH v3 0/7] Add support for ISO9660 image compatible with Legacy and EFI BIOS Kory Maincent
2021-09-23 15:57 ` [Buildroot] [PATCH v3 1/7] board, boot, package: remove usage of startup.nsh in EFI partition Kory Maincent
2021-09-23 20:06 ` Yann E. MORIN
2021-09-24 20:28 ` Erico Nunes
2021-09-27 19:28 ` Yann E. MORIN
2021-09-27 19:27 ` Yann E. MORIN
2021-09-23 15:57 ` [Buildroot] [PATCH v3 2/7] boot/grub2: add support to build multiple Grub2 configurations in the same build Kory Maincent
2021-09-27 19:42 ` Yann E. MORIN
2021-10-06 18:11 ` Yann E. MORIN
2021-10-07 8:23 ` Köry Maincent
2021-10-07 9:53 ` Yann E. MORIN
2021-10-07 12:43 ` Köry Maincent
2021-10-07 16:29 ` Yann E. MORIN
2021-10-08 8:20 ` Köry Maincent
2021-10-11 10:27 ` Köry Maincent
2021-10-14 20:02 ` Yann E. MORIN
2021-10-14 20:27 ` Yann E. MORIN
2021-10-14 20:48 ` Adam Duskett
2021-10-14 21:02 ` Yann E. MORIN
2021-10-15 9:19 ` Köry Maincent
2021-10-15 9:28 ` Thomas Petazzoni
2021-10-15 20:50 ` Yann E. MORIN
2021-10-19 16:30 ` Adam Duskett
2021-10-20 15:58 ` Köry Maincent
2021-09-23 15:57 ` [Buildroot] [PATCH v3 3/7] fs/iso9660: add support to Grub EFI bootloader in the image Kory Maincent
2021-09-27 20:43 ` Yann E. MORIN [this message]
2021-09-28 5:35 ` Yann E. MORIN
2021-09-23 15:57 ` [Buildroot] [PATCH v3 4/7] fs/iso9660: add support for hybrid image using Grub bootloader on BIOS and EFI Kory Maincent
2021-09-27 21:05 ` Yann E. MORIN
2021-09-29 8:23 ` Köry Maincent
2021-09-29 21:26 ` Yann E. MORIN
2021-09-30 9:12 ` Köry Maincent
2021-09-23 15:57 ` [Buildroot] [PATCH v3 5/7] support/testing/infra/emulator.py: update encoding when calling qemu Kory Maincent
2021-09-30 20:28 ` Yann E. MORIN
2021-10-02 20:28 ` Yann E. MORIN
2021-10-03 9:09 ` Thomas Petazzoni
2021-10-03 12:47 ` Yann E. MORIN
2021-10-04 7:47 ` Köry Maincent
2021-10-06 14:59 ` Peter Korsgaard
2021-09-23 15:57 ` [Buildroot] [PATCH v3 6/7] boot/edk2: add support to i386 architecture Kory Maincent
2021-09-30 19:51 ` Yann E. MORIN
2021-10-03 12:49 ` Yann E. MORIN
2021-10-04 10:22 ` Köry Maincent
2021-09-23 15:57 ` [Buildroot] [PATCH v3 7/7] support/testing/tests/fs/test_iso9660.py: add support to test using EFI BIOS Kory Maincent
2021-10-03 12:50 ` Yann E. MORIN
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