diff options
| author | Peter Jones <pjones@redhat.com> | 2018-08-01 11:04:14 -0400 |
|---|---|---|
| committer | Peter Jones <pjones@redhat.com> | 2021-02-15 17:20:05 -0500 |
| commit | d211ab2435dad02311b4f8e204491d42638d4aec (patch) | |
| tree | c16e27b1fc88fff50401ab46a30925cf504203bf | |
| parent | 5cd4ec44b81361a20a15f5c6e173ecbd8838d822 (diff) | |
| download | efi-boot-shim-d211ab2435dad02311b4f8e204491d42638d4aec.tar.gz efi-boot-shim-d211ab2435dad02311b4f8e204491d42638d4aec.zip | |
Add fallback boot loop detection to TODO
Signed-off-by: Peter Jones <pjones@redhat.com>
| -rw-r--r-- | TODO | 13 |
1 files changed, 13 insertions, 0 deletions
@@ -27,5 +27,18 @@ the string table :/ - Make build.log an artifact of building. - KEK for Mok. (koike expressed an interest in working on this.) +- Detection of fallback.efi boot loops + - Some tablet devices seem to always boot the fallback path, ignoring + boot variables, so we need to detect that. + - fallback creates 2 variables, one volatile, one nonvolatile + - if shim sees the nonvolatile variable but not the volatile one, it has + been booted correctly after fallback has run, so it should remove the + nonvolatile variable. + - if fallback sees the nonvolatile variable, it is in a fallback boot + loop, and should launch the next stage instead of rebooting. + - This means the TPM extend chain on machines with broken BDS always + looks like: shim -> fallback -> shim -> grub2 -> kernel, *except* on + boots from removable media (i.e. install media without fallback), + where it looks like shim -> grub2 -> kernel /once/. # vim:filetype=mail:tw=74 |