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2015-09-06boot loader: support root=UUIDPatrick Ohly1
As mentioned when introducing the VM images (https://bugzilla.yoctoproject.org/show_bug.cgi?id=7374), the resulting images only work when the image is mounted as a disk that results in the hard-coded path (/dev/sda in the current default). Using the file system UUID to find the rootfs is more flexible. To enable this for boot-direct.bbclass and thus image-vm.bbclass (aka FSTYPEs vdi/vmdk/qcow2), set SYSLINUX_ROOT = "root=UUID=<<uuid-of-rootfs>>". The rootfs image must use an ext file system. The special string will get replaced in the APPEND line with the actual UUID when the boot loader (grub-efi, syslinux or gummiboot) writes the boot loader configuration files. At that time, the rootfs image has already been created and its UUID can be extracted using "tune2fs -l", which also should be available because the e2fsprogs-native tools were needed to create the image in the first place. Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2014-06-24gummiboot.bbclass: Ensure MLPREFIX is applied to depends flagMing Liu1
Add MLPREFIX to depends flag to ensure the correct gummiboot is dependended upon. Signed-off-by: Ming Liu <ming.liu@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2014-03-11classes: Add gummiboot classStefan Stanacar1
Adds a gummiboot class similar to grub-efi class and makes the necessary changes so it can be used for live/hddimg images as well. One can set EFI_PROVIDER = "gummiboot" in local.conf to use gummiboot instead of grub-efi. Gummiboot requires some kernel options that are not enabled by default, so one has to build with KERNEL_FEATURES_append = " cfg/efi-ext". The install scripts have been updated too, keeping the old behaviour around, but accounting for the new boot loader config files (if they exist). It can be argued that the installer and bootimg are a bit wierd and not necessarily correct, but I wanted to have the exact same behviour with gummiboot. With the default EFI_PROVIDER = "grub-efi" nothing changes, everthing should be just as before. I've tested live boot, install and normal boot on: - FRI2 - genericx86-64 on NUC with: EFI_PROVIDER = "gummiboot" KERNEL_FEATURES_append = " cfg/efi-ext" in local.conf. Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>