https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202614
Bug ID: 202614
Summary: [EFI] boot/loader.efi: Fix and improve the 'nvram'
command
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: ganael.laplan...@corp.ovh.com
Created attachment 160296
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=160296&action=edit
patch-sys-boot-efi-loader-main.c
Hi,
The embedded 'nvram' command of loader.efi (-CURRENT, r286279) fails to list
EFI variables with the following message :
??=<error retrieving variable>
Find attached a patch that brings the following :
- Fix variables enumeration (to initiate the search, the 'VariableName'
argument of GetNextVariableName() should be a pointer to NULL, not a NULL
pointer [1])
- Add a '-v' (verbose) option to display variables' contents (now hidden by
default, as the output is un-readable with too many variables)
- Add the ability to specify a variable name to restrict display to variable(s)
matching this name only
- Print GUID along with each variable name
- Simplify contents' rendering by *always* printing them in hex (most of the
contents were un-readable in ascii)
Best Regards,
Ganael.
[1] UEFI Specification Version v2.5, p239:
http://www.uefi.org/sites/default/files/resources/UEFI%202_5.pdf
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