Re: [PATCH v2 3/5] MdeModulePkg/BootManagerUiLib: show inactive boot options

["Leif Lindholm" <leif@nuviainc.com>]

On Thu, May 28, 2020 at 11:17:39 +0200, Ard Biesheuvel wrote:
> UEFI boot options may exist but have the LOAD_OPTION_ACTIVE flag
> cleared. This means that the boot option should not be selected
> by default, but it does not mean it should be omitted from the
> boot selection presented by the boot manager: for this purpose,
> another flag LOAD_OPTION_HIDDEN exists.
> 
> Given that the latter flag exists solely for the purpose of omitting
> boot options from the boot selection menu, and LOAD_OPTION_XXX flags
> can be combined if desired, hiding inactive boot options as well is
> a mistake, and violates the intent of paragraph 3.1.3 of the UEFI
> specification (revision 2.8 errata A). Let's fix this by dropping
> the LOAD_OPTION_ACTIVE check from the code that populates the boot
> selection menu.
> 
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@arm.com>

Acked-by: Leif Lindholm <leif@nuviainc.com>

> ---
>  MdeModulePkg/Library/BootManagerUiLib/BootManager.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/MdeModulePkg/Library/BootManagerUiLib/BootManager.c b/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
> index 13b40e11b396..4b2c4c77a124 100644
> --- a/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
> +++ b/MdeModulePkg/Library/BootManagerUiLib/BootManager.c
> @@ -535,9 +535,9 @@ UpdateBootManager (
>      mKeyInput++;
>  
>      //
> -    // Don't display the hidden/inactive boot option
> +    // Don't display hidden boot options, but retain inactive ones.
>      //
> -    if (((BootOption[Index].Attributes & LOAD_OPTION_HIDDEN) != 0) || ((BootOption[Index].Attributes & LOAD_OPTION_ACTIVE) == 0)) {
> +    if ((BootOption[Index].Attributes & LOAD_OPTION_HIDDEN) != 0) {
>        continue;
>      }
>  
> -- 
> 2.17.1
>