Please use the EfiBootManagerSortLoadOptionVariable() to sort the boot options
from PlatformBootManagerLib.
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Ashish Singhal
> via groups.io
> Sent: Tuesday, May 17, 2022 7:02 AM
> To: devel@edk2.groups.io; Wang, Jian J <jian.j.w...@intel.com>; Gao, Liming
> <gaolim...@byosoft.com.cn>; Gao, Zhichao
> <zhichao....@intel.com>; Ni, Ray <ray...@intel.com>
> Cc: Ashish Singhal <ashishsin...@nvidia.com>
> Subject: [edk2-devel] [PATCH] MdeModulePkg/UefiBootManagerLib: Configurable
> New Boot Options
>
> Add a new PCD to be able to configure whether newly detected boot options
> are to be added at the beginning of the current boot options list or at
> the end.
>
> Signed-off-by: Ashish Singhal <ashishsin...@nvidia.com>
> ---
> MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c | 6 +++++-
> .../Library/UefiBootManagerLib/UefiBootManagerLib.inf | 1 +
> MdeModulePkg/MdeModulePkg.dec | 5 +++++
> MdeModulePkg/MdeModulePkg.uni | 4 ++++
> 4 files changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> index 962892d38f..8a46100c2a 100644
> --- a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> +++ b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
> @@ -2435,7 +2435,11 @@ EfiBootManagerRefreshAllBootOption (
> //
> for (Index = 0; Index < BootOptionCount; Index++) {
> if (EfiBootManagerFindLoadOption (&BootOptions[Index], NvBootOptions,
> NvBootOptionCount) == -1) {
> - EfiBootManagerAddLoadOptionVariable (&BootOptions[Index], (UINTN)-1);
> + if (PcdGetBool (PcdNewBootOptionAtStart)) {
> + EfiBootManagerAddLoadOptionVariable (&BootOptions[Index], 0);
> + } else {
> + EfiBootManagerAddLoadOptionVariable (&BootOptions[Index], (UINTN)-1);
> + }
> //
> // Try best to add the boot options so continue upon failure.
> //
> diff --git a/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
> b/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
> index fe05d5f1cc..46f41a7c63 100644
> --- a/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
> +++ b/MdeModulePkg/Library/UefiBootManagerLib/UefiBootManagerLib.inf
> @@ -119,3 +119,4 @@
> gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile
> ## CONSUMES
> gEfiMdeModulePkgTokenSpaceGuid.PcdDriverHealthConfigureForm
> ## SOMETIMES_CONSUMES
> gEfiMdeModulePkgTokenSpaceGuid.PcdMaxRepairCount
> ## CONSUMES
> + gEfiMdeModulePkgTokenSpaceGuid.PcdNewBootOptionAtStart
> ## CONSUMES
> diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
> index cf79292ec8..9d696f117b 100644
> --- a/MdeModulePkg/MdeModulePkg.dec
> +++ b/MdeModulePkg/MdeModulePkg.dec
> @@ -2146,6 +2146,11 @@
> # @Prompt GHCB Pool Size
> gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbSize|0|UINT64|0x00030008
>
> + ## This dynamic PCD holds the flag to tell UEFI boot manager whether to
> add newly detected devices at
> + # the end, or at the start of the boot option.
> + # @Prompt Add new devices in boot options at start
> +
> gEfiMdeModulePkgTokenSpaceGuid.PcdNewBootOptionAtStart|FALSE|BOOLEAN|0x00030009
> +
> [PcdsDynamicEx]
> ## This dynamic PCD enables the default variable setting.
> # Its value is the default store ID value. The default value is zero as
> Standard default.
> diff --git a/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
> index b070f15ff2..8e68db1c25 100644
> --- a/MdeModulePkg/MdeModulePkg.uni
> +++ b/MdeModulePkg/MdeModulePkg.uni
> @@ -1325,6 +1325,10 @@
>
> #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbBase_HELP #language en-US
> "Used with SEV-ES support to identify
> an address range that is not to be encrypted."
>
> +#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdNewBootOptionAtStart_PROMPT
> #language en-US "Add new devices in
> boot options at start"
> +
> +#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdNewBootOptionAtStart_HELP
> #language en-US "Used by UEFI boot
> manager to decide whether to place newly detcted devices at start of the list
> or end."
> +
> #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbSize_PROMPT #language
> en-US "Guest-Hypervisor Communication
> Block (GHCB) Pool Base Size"
>
> #string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbSize_HELP #language en-US
> "Used with SEV-ES support to identify the
> size of the address range that is not to be encrypted."
> --
> 2.17.1
>
>
>
>
>
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