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-rw-r--r--docs/ENVIRONMENT.md11
1 files changed, 7 insertions, 4 deletions
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
index c6a7f1babd..83c2d25134 100644
--- a/docs/ENVIRONMENT.md
+++ b/docs/ENVIRONMENT.md
@@ -36,10 +36,13 @@ All tools:
* `$SD_EVENT_PROFILE_DELAYS=1` — if set, the sd-event event loop implementation
will print latency information at runtime.
-* `$SYSTEMD_PROC_CMDLINE` — if set, may contain a string that is used as kernel
- command line instead of the actual one readable from /proc/cmdline. This is
- useful for debugging, in order to test generators and other code against
- specific kernel command lines.
+* `$SYSTEMD_PROC_CMDLINE` — if set, the contents are used as the kernel command
+ line instead of the actual one in /proc/cmdline. This is useful for
+ debugging, in order to test generators and other code against specific kernel
+ command lines.
+
+* `$SYSTEMD_EFI_OPTIONS` — if set, used instead of the string in SystemdOptions
+ EFI variable. Analogous to `$SYSTEMD_PROC_CMDLINE`.
* `$SYSTEMD_IN_INITRD` — takes a boolean. If set, overrides initrd detection.
This is useful for debugging and testing initrd-only programs in the main