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Ard Biesheuvel f7a182154e Factor out x86-isms and add cross compile support 
This patch cleans up and refactors the Makefiles to better allow new
architectures to be added:
- remove unused Makefile definitions
- import Makefile definitions from top level rather than redefining
- move x86 specific CFLAGS to inside ifeq() blocks
- remove x86 inline asm
- allow $(FORMAT) to be overridden: this is necessary as there exists no
  EFI or PE/COFF aware objcopy for ARM

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
2014-08-12 10:54:05 -04:00
Cryptlib Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
include Make sure we default to assuming we're locked down. 2014-06-25 10:55:56 -04:00
lib Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
.gitignore Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -04:00
cert.S Make vendor_cert/vendor_dbx actually replaceable by an external tool. 2013-10-01 14:03:16 -04:00
COPYRIGHT Add copyright file 2012-07-09 11:03:12 -04:00
crypt_blowfish.c MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -04:00
crypt_blowfish.h MokManager: support blowfish-based crypt() hash 2013-09-26 11:58:01 -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 [fallback] Try to boot the first boot option anyway 2014-05-13 13:30:07 -04:00
make-certs Sign MokManager with a locally-generated key 2012-11-26 13:43:50 -05:00
Makefile Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
MokManager.c MokManager: handle the error status from ReadKeyStroke 2014-06-25 10:02:18 -04:00
MokVars.txt Add support for disabling db for verification 2013-10-02 11:29:34 -04:00
netboot.c Factor out x86-isms and add cross compile support 2014-08-12 10:54:05 -04:00
netboot.h netboot.h: fix build error on 32-bit systems 2013-11-12 10:25:40 -05:00
PasswordCrypt.c additional bounds-checking on section sizes 2014-04-11 14:41:22 -04:00
PasswordCrypt.h MokManager: support Tradition DES hash 2013-09-26 11:58:01 -04:00
README Replace build instructions in README with something not completely wrong. 2014-07-21 16:15:07 -04:00
replacements.c unhook_system_services: bail on systab == NULL 2014-08-12 10:54:05 -04:00
replacements.h Allow fallback to use the system's LoadImage/StartImage . 2014-02-14 17:48:01 -05:00
shim.c Simplify the checking of SB and DB states 2014-06-25 10:58:23 -04:00
shim.h Make SHIM_LOCK_GUID a first-class object with a symbol. 2013-09-23 10:40:49 -04:00
testplan.txt Add a failure case to the test plan and fix an ordering error. 2014-02-14 17:48:01 -05:00
TODO Update for Josh's changes. 2013-10-02 13:33:52 -04:00
ucs2.h Add StrCSpn() 2013-04-30 09:46:22 -04:00
version.c.in Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -04:00
version.h Add ident-like blobs to shim.efi for version checking. 2013-10-03 11:11:09 -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 DER-encoded public certificate in a file such as
pub.cer and build with "make VENDOR_CERT_FILE=pub.cer".