UEFI_CapsuleOnDisk branch is used to develop the Capsule-On-Disk feature. Please refer to the patch of Readme.md to get the detailed feature introduction.
Note: The branch will be created by the end of Apr 19th if no objection. Cc: Kinney Michael D <michael.d.kin...@intel.com<mailto:michael.d.kin...@intel.com>> Cc: Zhang, Chao B <chao.b.zh...@intel.com<mailto:chao.b.zh...@intel.com>> Cc: Gao, Liming <liming....@intel.com<mailto:liming....@intel.com>> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: xuwei6 <wei6...@intel.com<mailto:wei6...@intel.com>> --- Readme.md | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Readme.md diff --git a/Readme.md b/Readme.md new file mode 100644 index 0000000000..5528044802 --- /dev/null +++ b/Readme.md @@ -0,0 +1,42 @@ + +# Introduction + +This branch is used to develop the **Capsule-On-Disk** feature. +The branch owner: Chao Zhang < [chao.b.zh...@intel.com](mailto:chao.b.zh...@intel.com) >, Wei Xu < [wei6...@intel.com](mailto:wei6...@intel.com) > + +# Feature Summary + +Traditionally capsule image is delivered to BIOS in persistent memory across system reset, but not all platforms support or function well across memory persistent reset. To solve this problem, **Capsule-On-Disk** delivers capsule images through EFI system partition on peripheral storage device. For security reasons, Design is composed of 2 solutions. +- **Solution A)** - Load the image out of TCB and rely on Capsule-In-RAM to deliver Capsule-On-Disk. +- **Solution B)** - Relocate capsule image outside TCB. And leverage existing storage stack in PEI to load all capsule on disk images. Solution B) has bigger TCB but can work without Capsule-In-RAM support + +>User can test this feature with **CapsuleApp** in **MdeModulePkg**. It has been updated to support Capsule on Disk since **2019 Q1 stable release**. + +Brief working flow of **Capsule-On-Disk**: +``` +1. Store capsule images into \EFI\Capsules\ folder on EFI system partition. +2. Set EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED flag in L"OsIndications". +3. Reboot system. +4. Get all capsule images from \EFI\Capsules\ after TCB, relocated them to root direcotry of a platform-specific NV storage device with BlockIo protocol. +5. Reboot system. +6. Load capsule imaages from the root direcotry in TCB, and build CV hobs +``` + +## Related Modules + +The following modules are related to **Capsule-On-Disk**. +``` +MdeModulePkg\Library\DxeCapsuleLibFmp\DxeCapsuleLib.inf +MdeModulePkg\Universal\CapsuleOnDiskLoadPei\CapsuleOnDiskLoadPei.inf +``` + +# Time Line + +|Date |Event | +|----------------|-------------------------------| +|2019 Q2 | Exit Staging | + + +# Related Materials + +UEFI Specification - http://uefi.org/specifications \ No newline at end of file -- 2.16.2.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#38966): https://edk2.groups.io/g/devel/message/38966 Mute This Topic: https://groups.io/mt/31057259/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
