[Buildroot] initrd isn't needed for iso9660 when initramfs is used

[Buildroot] initrd isn't needed for iso9660 when initramfs is used

[Assaf Inbal]

I'm not entirely sure of this patch.
The problem is that, while initrd isn't needed when initramfs is used, the
default menu for grub always includes the initrd directive and will fail to load
when it's missing.
Perhaps we should have two grub menus? Or create it during build?
Any ideas?

Thanks,
Assaf

[Buildroot] [PATCH] iso9660 fs: no need to copy initrd when using initramfs

[Assaf Inbal]

Signed-off-by: Assaf Inbal <shmuelzon@gmail.com>
---
 fs/iso9660/iso9660.mk |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/iso9660/iso9660.mk b/fs/iso9660/iso9660.mk
index 317314a..12ab9eb 100644
--- a/fs/iso9660/iso9660.mk
+++ b/fs/iso9660/iso9660.mk
@@ -21,7 +21,9 @@ $(BINARIES_DIR)/rootfs.iso9660: host-cdrkit host-fakeroot linux rootfs-cpio grub
 	cp $(GRUB_DIR)/stage2/stage2_eltorito $(ISO9660_TARGET_DIR)/boot/grub/
 	cp $(ISO9660_BOOT_MENU) $(ISO9660_TARGET_DIR)/boot/grub/menu.lst
 	cp $(LINUX_IMAGE_PATH) $(ISO9660_TARGET_DIR)/kernel
-	cp $(BINARIES_DIR)/rootfs.cpio$(ISO9660_CPIO_EXT-y) $(ISO9660_TARGET_DIR)/initrd
+	if [ "$(BR2_TARGET_ROOTFS_INITRAMFS)" != "y" ]; then \
+	  cp $(BINARIES_DIR)/rootfs.cpio$(ISO9660_CPIO_EXT-y) $(ISO9660_TARGET_DIR)/initrd; \
+	fi
 	# Use fakeroot to pretend all target binaries are owned by root
 	rm -f $(FAKEROOT_SCRIPT)
 	echo "chown -R 0:0 $(ISO9660_TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
-- 
1.7.9.5

[Buildroot] initrd isn't needed for iso9660 when initramfs is used

[Arnout Vandecappelle]

On 22/08/13 07:09, Assaf Inbal wrote:
> I'm not entirely sure of this patch.
> The problem is that, while initrd isn't needed when initramfs is used, the
> default menu for grub always includes the initrd directive and will fail to load
> when it's missing.

  Why do you want to use iso9660 with an initramfs? initramfs is only 
really useful for boat loaders that have a problem with passing an 
initrd, e.g. network boot.


  Regards,
  Arnout

> Perhaps we should have two grub menus? Or create it during build?
> Any ideas?
>
> Thanks,
> Assaf
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot
>


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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[Buildroot] initrd isn't needed for iso9660 when initramfs is used

[Assaf Inbal]

Hey,

 Why do you want to use iso9660 with an initramfs? initramfs is only really
> useful for boat loaders that have a problem with passing an initrd, e.g.
> network boot.
>

Can't give you a real answer for that :)
I was basically playing around with a few things and didn't understand why
initrd was always included.
Feel free to disregard this patch.

Good day,
Assaf
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