[Bug 1581299] Re: shim: set second stage not work

[Ivan Hu]

Here is the efibootmgr -v for your request.

BootNext: 0007
BootCurrent: 0006
Timeout: 0 seconds
BootOrder: 0006,0001,0000,0002,0003,0004
Boot0000* UEFI Internal Shell   FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(7c04a583-9e3e-4f1c-ad65-e05268d0b4d1)
Boot0001* Enter Setup   FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(462caa21-7614-4503-836e-8ab6f4662331)
Boot0002  Boot Device List      FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0)/FvFile(eec25bdc-67f2-4d95-b1d5-f81b2039d11d)
Boot0003* UEFI ATAPI iHAS124 E 3524665 228416501444     PciRoot(0x0)/Pci(0x1f,0x2)/Sata(2,0,0)N.....YM....R,Y.
Boot0004* UEFI ST500DM002-1BD142 Z3THAL0R       PciRoot(0x0)/Pci(0x1f,0x2)/Sata(3,0,0)N.....YM....R,Y.
Boot0005* UEFI SanDisk Ultra 4C530001310121113460       PciRoot(0x0)/Pci(0x1d,0x0)/USB(0,0)/USB(4,0)N.....YM....R,Y.
Boot0006* ubuntu        HD(1,GPT,cae6aec2-f305-4006-95b0-8063f692a715,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
Boot0007* Linux-Firmware-Updater \fwupx64.efi   HD(1,GPT,cae6aec2-f305-4006-95b0-8063f692a715,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)\.f.w.u.p.x.6.4...e.f.i...

actually, this patch fixed the commit 3322257e611e2000f79726d295bb4845bbe449e7 for those which load option only have one string won't work.
you can simple build a efi application, such as hello.efi, set the bootnext to it as
Boot0008* test  HD(1,GPT,cae6aec2-f305-4006-95b0-8063f692a715,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)\.h.e.l.l.o...e.f.i...
then to check it the hello.efi be run on next boot. To make sure shim works properly or not.

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https://bugs.launchpad.net/bugs/1581299

Title:
  shim: set second stage not work

Status in shim package in Ubuntu:
  Incomplete

Bug description:
  Using the applications such as fwupdate and efibootmgr to set the device path for the second stage path is not working on some platforms.
  The second stage set is not working after commit
  3322257e611e2000f79726d295bb4845bbe449e7 on https://github.com/rhinstaller/shim
  for those which load option only have one string.

  This is due to some versions of BDS, on loadoption we only get:
  00000000  5c 00 66 00 77 00 75 00  70 00 78 00 36 00 34 00  |\.f.w.u.p.x.6.4.|
  00000010  2e 00 65 00 66 00 69 00  00 00                    |..e.f.i...|
  0000001a

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