b57c2a10af
Add support for multiple, shared, early initrd images. These early images will be loaded in the order declared, and all will be loaded before the initrd image. While many classes of data can be provided by early images, the immediate use case would be for distributions to provide CPU microcode to mitigate the Meltdown and Spectre vulnerabilities. There are two environment variables provided for declaring the early images. * GRUB_EARLY_INITRD_LINUX_STOCK is for the distribution declare images that are provided by the distribution or installed packages. If undeclared, this will default to a set of common microcode image names. * GRUB_EARLY_INITRD_LINUX_CUSTOM is for user created images. User images will be loaded after the stock images. These separate configurations allow the distribution and user to declare different image sets without clobbering each other. This also makes a minor update to ensure that UUID partition labels stay disabled when no initrd image is found, even if early images are present. This is a continuation of a previous patch published by Christian Hesse in 2016: http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00025.html Down stream Gentoo bug: https://bugs.gentoo.org/645088 Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Matthew S. Turnbull <sparky@bluefang-logic.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> |
||
|---|---|---|
| .. | ||
| 00_header.in | ||
| 10_hurd.in | ||
| 10_illumos.in | ||
| 10_kfreebsd.in | ||
| 10_linux.in | ||
| 10_netbsd.in | ||
| 10_windows.in | ||
| 10_xnu.in | ||
| 20_linux_xen.in | ||
| 30_os-prober.in | ||
| 40_custom.in | ||
| 41_custom.in | ||
| README | ||
All executable files in this directory are processed in shell expansion order. 00_*: Reserved for 00_header. 10_*: Native boot entries. 20_*: Third party apps (e.g. memtest86+). The number namespace in-between is configurable by system installer and/or administrator. For example, you can add an entry to boot another OS as 01_otheros, 11_otheros, etc, depending on the position you want it to occupy in the menu; and then adjust the default setting via /etc/default/grub.