UEFI Add Boot Option programmatically

Question

How can i write code which add boot option from UEFI driver programmatically? 1) I try to add "Boot0001" variable:

  ZeroMem(Data, 2048);
  StrCpy(Data, L"Boot0001");
  DataSize = StrLen(Data) * 2;

  Status = gRT->SetVariable(L"Boot0001", &dGuid, Attr, DataSize, &Data);

2) I need add entry to "BootOrder" variable. But i can't understand how. Ideally, i want to add boot option boot from sample efi application.

1) What is the result? 2) What aspect do you not understand? — unixsmurf
1) new variable "Boot0001" in NVRAM. 2) How to change "BootOrder" variable to add "Boot0001" option as second option? — yakovlev.it
(Sorry, out travelling, intermittent computer access.) OK that makes it clear enough to answer. — unixsmurf

CodeRush CodeRush · Accepted Answer · 2014-10-25T11:37:31

To add something to UEFI boot list:

Create BootXXXX variable, it's format looks like this.
Change BootOrder variable, adding newly created option somewhere in the list.

You can find a working code snippet in UEFI shell sources.

UEFI Add Boot Option programmatically

2 Answers