From: Saqib Khan <saqib.khan2011@gmail.com>
To: edk2-devel@lists.01.org
Subject: How to get BBS_BBS_DEVICE_PATH from BOOTXXXX variable
Date: Tue, 18 Oct 2016 22:18:28 +0500 [thread overview]
Message-ID: <CAF=YJJ8cgQEUiNK_-BmDgPaSXYrf9AWu8RSCWV3d9PvVX5rObQ@mail.gmail.com> (raw)
Hi,
I can not find structure of BOOTXXXX variable, Can any one help how to
extract device path from BOOTXXXX variable.
here is code i have attempt (rEFind)
*UINT8 *Value;*
*Status = gRT->GetVariable ((CHAR16 *)Name, &gEfiGlobalVariableGuid, NULL,
&BootVariableSize, Value); //print attribute /*Check if
device boot variable is legacy*/ Ptr = Value; Ptr
+= sizeof (UINT32); DevPathLen = *(UINT16 *) Ptr; Ptr +=
sizeof (UINT16); Ptr += StrSize ((UINT16 *) Ptr);
DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Ptr; Print (L"Paths:
%s\n",ConvertDevicePathToText (DevicePath,TRUE,TRUE));*
--
Regards
Saqib
next reply other threads:[~2016-10-18 17:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-18 17:18 Saqib Khan [this message]
2016-10-18 17:40 ` How to get BBS_BBS_DEVICE_PATH from BOOTXXXX variable Laszlo Ersek
2016-10-18 18:37 ` Andrew Fish
2016-10-19 18:17 ` Saqib Khan
2016-10-19 20:41 ` Carsey, Jaben
2016-10-20 7:29 ` Saqib Khan
2016-10-20 15:44 ` Carsey, Jaben
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-list from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAF=YJJ8cgQEUiNK_-BmDgPaSXYrf9AWu8RSCWV3d9PvVX5rObQ@mail.gmail.com' \
--to=devel@edk2.groups.io \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox