Bug #11717
loader.efi: efipart needs to use ioalign
Start date:
Due date:
% Done:
100%
Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:
Description
UEFI specification 2.7A, EFI_BLOCK_IO_PROTOCOL, page 566.
The ioalign property does define the alignment of data buffer.
If the alignment is required and our buffer is not aligned, or if
the data buffer is not multiple of Blocksize, we need to use bounce buffer
to perform the block IO. This is much like with BIOS version, except
there the INT13 needs buffer to be located in low memory.
Additionally, we need to handle disk writes properly.
Related issues
Updated by Toomas Soome about 1 year ago
Testing done: tested by forcing alignment "manually", but also by normal build/install/boot cycle.
Also integrated into FreeBSD.
Updated by Electric Monk about 1 year ago
- Status changed from In Progress to Closed
- % Done changed from 90 to 100
git commit 2b292e00835d471d54a29c338155ab9d5756c18d
commit 2b292e00835d471d54a29c338155ab9d5756c18d
Author: Toomas Soome <tsoome@me.com>
Date: 2019-09-28T06:59:54.000Z
11717 loader.efi: efipart needs to use ioalign
Reviewed by: Andy Fiddaman <omnios@citrus-it.co.uk>
Reviewed by: Andrew Stormont <andyjstormont@gmail.com>
Approved by: Robert Mustacchi <rm@fingolfin.org>