audk/MdeModulePkg/Library/UefiBootManagerLib
Gary Lin 02021d2ea4 MdeModulePkg/UefiBootManagerLib: Match the nested partitions
In some cases, such as MD RAID1 in Linux, the bootloader may be in a
nested EFI system partition partition. For example, sda1 and sdb1 are
combined as md0 and the first partition of md0, md0p1, is an EFI system
partition. Then, the bootloader can be located by the following device
paths:

PCI()/SATA(sda)/Partition(sda1)/Partition(md0p1)/File(bootloader.efi)
PCI()/SATA(sdb)/Partition(sdb1)/Partition(md0p1)/File(bootloader.efi)

To make the boot option more resilient, we may create a boot option with
the short-form device path like "Partition(md0p1)/File(bootloader.efi)".

However, BmMatchPartitionDevicePathNode() only matched the first
partition node and ignored the nested partitions, so the firmware would
refuse to load bootloader.efi since "Partition(md0p1)" doesn't match
either "Partition(sda1)" or "Partition(sda2)".

This commit modifies BmMatchPartitionDevicePathNode() to iterate all
nested partitions so that the above boot option could work.

v2 - Simplify the node matching logic

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
2019-01-31 12:25:36 +08:00
..
BmBoot.c MdeModulePkg/UefiBootManagerLib: Match the nested partitions 2019-01-31 12:25:36 +08:00
BmBootDescription.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
BmConnect.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
BmConsole.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
BmDriverHealth.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
BmHotkey.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
BmLoadOption.c MdeModulePkg/UefiBootManagerLib: Fix small LoadOptionToVariable leak 2018-07-06 15:38:15 +08:00
BmMisc.c MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
InternalBm.h MdeModulePkg: Clean up source files 2018-06-28 11:19:45 +08:00
UefiBootManagerLib.inf MdeModulePkg: Removing ipf which is no longer supported from edk2. 2018-09-06 15:25:16 +08:00
UefiBootManagerLib.uni MdeModulePkg: Convert all .uni files to utf-8 2015-12-15 04:56:23 +00:00