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Peter Jones 2901506937 Make SHIM_LOCK_GUID a first-class object with a symbol. 
Right now the CA is checking if shim builds expose a particular version
of the shim protocol.  To do this, they're looking for SHIM_LOCK_GUID's
value in the resulting binary.

Currently, with SHIM_LOCK_GUID as a macro that gets assigned to local
variables, that means they have to compensate for mov instructions mixed
in with the actual value.  This is completely absurd, so promote it to a
first-class object with a symbol to make it both easy to find and
continuous.

Signed-off-by: Peter Jones <pjones@redhat.com>
2013-09-23 10:40:49 -04:00
Cryptlib Make sure all the Makefiles use the same arguments for mmx/sse/ms_abi. 2013-06-10 16:38:05 -04:00
.gitignore add a .gitignore 2013-06-10 17:36:22 -04:00
cert.S Fix some pointer casting issues. 2013-06-11 14:59:48 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
dbx.S Make .vendor_cert get the right flags set. 2013-06-10 17:36:23 -04:00
elf_ia32_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_ia64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
elf_x86_64_efi.lds Move embedded certificates to their own section. 2013-06-10 17:35:33 -04:00
fallback.c Fix some minor type errors. 2013-05-15 13:37:15 -04:00
make-certs Sign MokManager with a locally-generated key 2012-11-26 13:43:50 -05:00
Makefile Bump version to 0.4 2013-06-10 17:51:57 -04:00
MokManager.c Make sure the menu shows when the callback fails 2013-01-03 12:20:30 +08:00
MokVars.txt Add documentation of the Mok variables 2012-10-30 16:14:02 -04:00
netboot.c EFI_PXE_BASE_CODE_DHCPV6_PACKET is in gnu-efi-3.0t 2013-05-31 15:34:11 -04:00
netboot.h Add draft version of Neil's netboot code 2012-10-12 20:14:14 -04:00
PeImage.h dos2unix PeImage.h 2012-09-06 12:01:43 -04:00
README Add basic documentation 2012-07-28 00:42:43 -04:00
shim.c Make SHIM_LOCK_GUID a first-class object with a symbol. 2013-09-23 10:40:49 -04:00
shim.h Make SHIM_LOCK_GUID a first-class object with a symbol. 2013-09-23 10:40:49 -04:00
signature.h Switch to using db format for MokList and MokNew 2012-10-12 19:55:20 -04:00
TODO Update TODO 2012-07-09 10:39:14 -04:00
ucs2.h Add StrCSpn() 2013-04-30 09:46:22 -04:00

README 

shim is a trivial EFI application that, when run, attempts to open and
execute another application. It will initially attempt to do this via the
standard EFI LoadImage() and StartImage() calls. If these fail (because secure
boot is enabled and the binary is not signed with an appropriate key, for
instance) it will then validate the binary against a built-in certificate. If
this succeeds and if the binary or signing key are not blacklisted then shim
will relocate and execute the binary.

shim will also install a protocol which permits the second-stage bootloader
to perform similar binary validation. This protocol has a GUID as described
in the shim.h header file and provides a single entry point. On 64-bit systems
this entry point expects to be called with SysV ABI rather than MSABI, and
so calls to it should not be wrapped.

To use shim, simply place a hex dump of the public certificate in cert.h
and build it with make.