[Bug 1926011] Re: groovy / focal fwupd sbat support

[Yuan-Chen Cheng]

@superm1 please review again, thank you.

object dump for the efi in #10

Idx Name          Size      VMA               LMA               File off  Algn
  0 .text         000075bb  0000000000004000  0000000000004000  00000400  2**4
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  1 .reloc        0000000a  000000000000c000  000000000000c000  00007a00  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  2 .data         00002d68  000000000000d000  000000000000d000  00007c00  2**5
                  CONTENTS, ALLOC, LOAD, DATA
  3 .sbat         000000ed  0000000000010000  0000000000010000  0000aa00  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 .dynamic      00000150  0000000000011000  0000000000011000  0000ac00  2**3
                  CONTENTS, ALLOC, LOAD, DATA
  5 .rela         00000e70  0000000000012000  0000000000012000  0000ae00  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  6 .rela.plt     00000018  0000000000012e70  0000000000012e70  0000be70  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  7 .dynsym       00000288  0000000000013000  0000000000013000  0000c200  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA

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https://bugs.launchpad.net/bugs/1926011

Title:
  groovy / focal fwupd sbat support

Status in OEM Priority Project:
  Confirmed
Status in fwupd package in Ubuntu:
  Confirmed
Status in fwupd-signed package in Ubuntu:
  New
Status in fwupd source package in Groovy:
  New
Status in fwupd-signed source package in Groovy:
  New

Bug description:
  this is a follow-up bug for

  https://bugs.launchpad.net/oem-priority/+bug/1921539/comments/23

  [Impact]
  Future releases of shim will require that EFI binaries that are chainloaded include an SBAT region. fwupd in bionic does not currently contain this region.

  [Test Case]
  Verify that a shim that checks for sbat region can boot the fwupd with sbat region.

  [Regression Potential]
  This is moving to a new stable release in each of the series which is in bug fix only mode. The sbat region is the only "feature" that has been backported to this series in over a year.

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