Re: [PATCH 1/1] UEFI section 2.6 exceptions for boot services

On Mon, 15 Feb 2021 at 18:13, Heinrich Schuchardt xypron.glpk@gmx.de wrote:

Describes deviations for ConnectController() and LoadImage().

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de

Acked-by: Ard Biesheuvel ardb@kernel.org

---

source/chapter2-uefi.rst | 11 +++++++++++ 1 file changed, 11 insertions(+)

diff --git a/source/chapter2-uefi.rst b/source/chapter2-uefi.rst index 49aec46..660eb27 100644 --- a/source/chapter2-uefi.rst +++ b/source/chapter2-uefi.rst @@ -112,6 +112,17 @@ interface specific UEFI protocols, and so they have been made optional.

* - Element
  - Description of deviation

• • • `LoadImage()`

• - The LoadImage() boot service is not required to install an
  

•   EFI_HII_PACKAGE_LIST_PROTOCOL for an image containing a custom PE/COFF
  

•   resource with the type 'HII'. - HII resource images are not needed to run
  

•   the UEFI shell or the SCT.
  

• • • `ConnectController()`

• - The ConnectController()` boot service is not required to support the
  

•   EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL,
  

•   EFI_DRIVER_FAMILY_OVERRIDE_PROTOCOL, and
  

•   EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL. - These override protocols are
  

•   only useful if drivers are loaded as EFI binaries by the firmware.
  

  • • `EFI_HII_CONFIG_ACCESS_PROTOCOL`
    • UEFI requires this for console devices, but it is rarely necessary in practice. Therefore this protocol is not required.

-- 2.30.0

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