[RFC PATCH edk2-platforms 0/6] expand capsule to include SCP firmware

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

Now that the NOR flash layout has been updated to split the actual SCP
firmware from the startup code and the builtin flasher, we can add the
SCP image to the capsule update to make it field upgradeable.

This involves some rather nasty plumbing, since making changes to capsule
update installable via capsule update requires some additional care.

Patch #1 fixes a bug in the FVB handling code of the flash access library.

Patch #2 addresses an issue where we accidentally started to dereference
arbitrary data as an FV header by incorporating the secure firmware binary
into the flash device.

Patch #3 is an optimization that speeds up flashing of sparse capsules.

Patch #4 adds a PCD that holds the minimum firmware version that is allowed
by a platform. We will use this to ensure that systems using the new layout
cannot be flashed using older capsules, which is unlikely to work in any
case, but not guaranteed to fail in a harmless manner.

Patch #5 is a temporary hack we will need to use to build capsules that
allow upgrading from the old layout to the new layout

Patch #6 implements the new layout, and adds support to set the minimum
version on the build command line.

Ard Biesheuvel (6):
  Silicon/SynQuacerPlatformFlashAccessLib: fix return value on no FVB
    found
  Silicon/SynQuacerPlatformFlashAccessLib: don't dereference FVB header
    fields
  Silicon/SynQuacerPlatformFlashAccessLib: skip empty blocks
  Silicon/SynQuacer: make lowest supported f/w version PCD configurable
  TEMPORARY
  Platform/Socionext/DeveloperBox: add SCP firmware image to capsule

 Platform/Socionext/DeveloperBox/DeveloperBox.dsc                                                      |  3 ++
 Platform/Socionext/DeveloperBox/DeveloperBox.fdf                                                      | 15 ++++---
 Platform/Socionext/DeveloperBox/SystemFirmwareDescriptor/SystemFirmwareDescriptor.inf                 |  2 +
 Platform/Socionext/DeveloperBox/SystemFirmwareDescriptor/SystemFirmwareDescriptorTable.aslc           |  2 +-
 Platform/Socionext/DeveloperBox/SystemFirmwareUpdateConfig/SystemFirmwareUpdateConfig.ini             |  4 +-
 Silicon/Socionext/SynQuacer/Library/SynQuacerPlatformFlashAccessLib/SynQuacerPlatformFlashAccessLib.c | 46 ++++++++++++++++----
 Silicon/Socionext/SynQuacer/SynQuacer.dec                                                             |  3 ++
 7 files changed, 58 insertions(+), 17 deletions(-)

-- 
2.15.1