This commit enhances mkimage to update the node
/image/pre-load/sig with the public key.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Add a stage pre-load to the command bootm.
Right now, this stage may be used to read a
header and check the signature of the full
image.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Add a stage pre-load that could
check or modify an image.
For the moment, only a header with a signature is
supported. This header has the following format:
- magic : 4 bytes
- version : 4 bytes
- header size : 4 bytes
- image size : 4 bytes
- offset image signature : 4 bytes
- flags : 4 bytes
- reserved0 : 4 bytes
- reserved1 : 4 bytes
- sha256 of the image signature : 32 bytes
- signature of the first 64 bytes : n bytes
- image signature : n bytes
- padding : up to header size
The stage uses a node /image/pre-load/sig to
get some informations:
- algo-name (mandatory) : name of the algo used to sign
- padding-name : name of padding used to sign
- signature-size : size of the signature (in the header)
- mandatory : set to yes if this sig is mandatory
- public-key (madatory) : value of the public key
Before running the image, the stage pre-load checks
the signature provided in the header.
This is an initial support, later we could add the
support of:
- ciphering
- uncompressing
- ...
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
At present mkimage displays the node information but it is not clear what
signing action was taken. Add a message that shows it. For now it only
supports showing a single signing action, since that is the common case.
Sample:
Signature written to 'sha1-basic/test.fit',
node '/configurations/conf-1/signature'
Public key written to 'sha1-basic/sandbox-u-boot.dtb',
node '/signature/key-dev'
Signed-off-by: Simon Glass <sjg@chromium.org>
At present we rely on the key blob being in the global_data fdt_blob
pointer. This is true in U-Boot but not with tools. For clarity, pass the
parameter around.
Signed-off-by: Simon Glass <sjg@chromium.org>
This permits to prepare FIT image description that do not hard-code the
final choice of the signature algorithm, possibly requiring the user to
patch the sources.
When -o <algo> is specified, this information is used in favor of the
'algo' property in the signature node. Furthermore, that property is set
accordingly when writing the image.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
The data blob apparently does not need to be modified through the fit
field of the image_sign_info struct so make it point to const to avoid
the need to cast away constness in functions that assign a pointer to
const data to the field.
fit_image_setup_verify already had to cast away constness as it assigned
a const void * argument to the field. The cast can now be removed.
Signed-off-by: Hannu Lounento <hannu.lounento@vaisala.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This file has a lot of conditional code and much of it is unnecessary.
Clean this up to reduce the number of build combinations.
Signed-off-by: Simon Glass <sjg@chromium.org>
This function is only used in one place and does not need to use the
preprocessor. Move it to the C file and convert it to a normal function.
Drop fit_unsupported() since it is not used.
Signed-off-by: Simon Glass <sjg@chromium.org>
We can use the new host_build() function for this, so drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This is not needed with Kconfig, since we can use IS_ENABLED() easily
enough. Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This is not needed with Kconfig, since we can use IS_ENABLED() easily
enough. Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This is not needed with Kconfig, since we can use IS_ENABLED() easily
enough and the board code is now in a separate file. Update the only place
where this is used and drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add a host Kconfig for FIT_RSASSA_PSS. With this we can use
CONFIG_IS_ENABLED(FIT_RSASSA_PSS) directly in the host build, so drop the
forcing of this in the image.h header.
Drop the #ifdef around padding_pss_verify() too since it is not needed.
Use the compiler to check the config where possible, instead of the
preprocessor.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add a host Kconfig for FIT_VERBOSE. With this we can use
CONFIG_IS_ENABLED(FIT_VERBOSE) directly in the tools build, so drop the
forcing of this in the image.h header.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Add a host Kconfig for OF_LIBFDT. With this we can use
CONFIG_IS_ENABLED(OF_LIBFDT) directly in the tools build, so drop the
unnecessary indirection.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Make use of the host Kconfig for FIT. With this we can use
CONFIG_IS_ENABLED(FIT) directly in the host build, so drop the unnecessary
indirection.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
At present when building host tools, we force CONFIG_SHAxxx to be enabled
regardless of the board Kconfig setting. This is done in the image.h
header file.
For SPL we currently just assume the algorithm is desired if U-Boot proper
enables it.
Clean this up by adding new Kconfig options to enable hashing on the host,
relying on CONFIG_IS_ENABLED() to deal with the different builds.
Add new SPL Kconfigs for hardware-accelerated hashing, to maintain the
current settings.
This allows us to drop the image.h code and the I_WANT_MD5 hack.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
We are not guaranteed to have the padding_pkcs_15_verify symbol since
commit 92c960bc1d ("lib: rsa: Remove #ifdefs from rsa.h"), and
commit 61416fe9df ("Kconfig: FIT_SIGNATURE should not select RSA_VERIFY")
The padding_algos only make sense with RSA verification, which can now
be disabled in lieu of ECDSA. In fact this will lead to build failures
because of the missing symbol mentioned earlier.
To resolve this, move the padding_algos to a linker list, with
declarations moved to rsa_verify.c. This is consistent with commit
6909edb4ce ("image: rsa: Move verification algorithm to a linker list")
One could argue that the added #ifdef USE_HOSTCC is ugly, and should
be hidden within the U_BOOT_PADDING_ALGO() macro. However, this would
be inconsistent with the "cryptos" list. This logic for was not
previously explored:
Without knowledge of the U_BOOT_PADDING_ALGO() macro, its use is
similar to something being declared. However, should #ifndef
USE_HOSTCC be part of the macro, it would not be obvious that it
behaves differently on host code and target code. Having the #ifndef
outside the macro makes this obvious.
Also, the #ifdef is not always necessary. For example ecda-verify
makes use of U_BOOT_CRYPTO_ALGO() without any accompanying #ifdefs.
The fundamental issue is a lack of separation of host and target code
in rsa_verify. Therefore, the declaration of a padding algo with the
external #ifdef is more readable and consistent.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
MD5 is being called directly in some places, but it is not available
via hash_lookup_algo("md5"). This is inconsistent with other hasing
routines. To resolve this, add an "md5" entry to hash_algos[].
The #ifdef clause looks funnier than those for other entries. This is
because both MD5 and SPL_MD5 configs exist, whereas the other hashes
do not have "SPL_" entries. The long term plan is to get rid of the
ifdefs, so those should not be expected to survive much longer.
The md5 entry does not have .hash_init/update/finish members. That's
okay because hash_progressive_lookup_algo() will catch that, and
return -EPROTONOSUPPORT, while hash_lookup_algo() will return the
correct pointer.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
[trini: Use CONFIG_IS_ENABLED not IS_ENABLED for MD5 check]
Signed-off-by: Tom Rini <trini@konsulko.com>
Originally CONFIG_FIT_SHAxxx enabled specific SHA algos for and only
for hash_calculate() in common/image-fit.c. However, since commit
14f061dcb1 ("image: Drop IMAGE_ENABLE_SHAxxx"),
the correct selector was changed to CONFIG_SHAxxx.
The extra "_FIT_" variants are neither used, nor needed. Remove them.
One defconfig disables FIT_SHA256, which is now changed to 'SHA256'.
CMD_MVEBU_BUBT needs to select select SHA256 to avoid undefined
references to "sha256_*()". bubt.c needs sha256, so this selection is
correct. It is not clear why this problem did not manifest before.
Note that SHA selection in SPL is broken for this exact reason. There
is no corresponding SPL_SHAxxx. Fixing this is is beyond the scope of
this change.
Also note that we make CONFIG_FIT now imply SHA256, to make up for
FIT_SHA256 previously being a default y option.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
[trini: Add imply SHA256 to FIT]
Signed-off-by: Tom Rini <trini@konsulko.com>
This macro is no longer needed for code flow or #ifdefs. Remove it.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This macro is no longer needed for code flow or #ifdefs. Remove it.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The purpose of this change is to enable crypto algorithms to be placed
in linker lists, rather than be declared as a static array. The goal
is to remove the crypto_algos array in a subsequent patch.
Create a new linker list named "cryptos", and search it when
image_get_crypto_algo() is invoked.
NOTE that adding support for manual relocation of crypto_algos within
linker lists is beyond the scope of this patch.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This is not needed with Kconfig, since we can use IS_ENABLED() easily
enough. Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
We already have a host Kconfig for these SHA options. Use
CONFIG_IS_ENABLED(SHAxxx) directly in the code shared with the host build,
so we can drop the unnecessary indirections.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
We already have a host Kconfig for SHA1. Use CONFIG_IS_ENABLED(SHA1)
directly in the code shared with the host build, so we can drop the
unnecessary indirection.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Drop the _SUPPORT suffix so we can use CONFIG_IS_ENABLED() with this
option.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Drop the _SUPPORT suffix so we can use CONFIG_IS_ENABLED() with this
option.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Drop the ENABLE and SUPPORT parts of this, which are redundant.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
These option are named inconsistently with other SPL options, thus making
them incompatible with the CONFIG_IS_ENABLED() macro. Rename them.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
The ENABLE part of this name is redundant, since all boolean Kconfig
options serve to enable something. The SUPPORT part is also redundant
since Kconfigs can be assumed to enable support for something. Together
they just serve to make these options overly long and inconsistent
with other options.
Rename FIT_ENABLE_SHAxxx_SUPPORT to FIT_SHAxxx
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
board_fit_image_post_process() passes only start and size of the image,
but type of the image is not passed. So pass fit and node_offset, to
derive information about image to be processed.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
It's not always desirable to use 'keydir' and some ad-hoc heuristics
to get the filename of the signing key. More often, just passing the
filename is the simpler, easier, and logical thing to do.
Since mkimage doesn't use long options, we're slowly running out of
letters. I've chosen '-G' because it was available.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
mkimage supports rsa2048, and rsa4096 signatures. With newer silicon
now supporting hardware-accelerated ECDSA, it makes sense to expand
signing support to elliptic curves.
Implement host-side ECDSA signing and verification with libcrypto.
Device-side implementation of signature verification is beyond the
scope of this patch.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
rsa-checksum.c sontains the hash_calculate() implementations. Despite
the "rsa-" file prefix, this function is useful for other algorithms.
To prevent confusion, move this file to lib/, and rename it to
hash-checksum.c, to give it a more "generic" feel.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Sandbox is special in that it is used for testing and it does not match
any particular target architecture. Allow it to load an image from any
architecture, so that 'bootm' can be used as needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Unfortunately -ENODATA is not available in OpenBSD. Use -EBADMSG
instead, to indicate a missing timestamp.
Fixes: c5819701a3 image: Adjust the workings of fit_check_format()
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
There's no point in guarding function prototypes with #ifdefs. If a
function is not defined, the linker will notice. Having the prototype
does not affect code size.
What the #if guard takes away is the ability to use IS_ENABLED:
if (CONFIG_IS ENABLED(FIT_IMAGE_POST_PROCESS))
board_fit_image_post_process(...)
When the prototype is guarded, the above form cannot be used. This
leads to the proliferation of #ifdefs, and unreadable code. The
opportunity cost of the #if guard outweighs any benefits. Remove it.
Since the original version of this patch, an empty definition was
added by commit f14e6eec6c ("image: cleanup pre-processor usage").
The empty definition can cause silent failures, when an implementation
of board_fit_image_post_process() is expected because the linker will
not catch the missing function. Thus this patch removes this empty
inline declaration.
Fixes: f14e6eec6c ("image: cleanup pre-processor usage")
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
At present this function does not accept a size for the FIT. This means
that it must be read from the FIT itself, introducing potential security
risk. Update the function to include a size parameter, which can be
invalid, in which case fit_check_format() calculates it.
For now no callers pass the size, but this can be updated later.
Also adjust the return value to an error code so that all the different
types of problems can be distinguished by the user.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Bruce Monroe <bruce.monroe@intel.com>
Reported-by: Arie Haenel <arie.haenel@intel.com>
Reported-by: Julien Lenoir <julien.lenoir@intel.com>
So far we used the separate mksunxiboot tool for generating a bootable
image for Allwinner SPLs, probably just for historical reasons.
Use the mkimage framework to generate a so called eGON image the
Allwinner BROM expects.
The new image type is called "sunxi_egon", to differentiate it
from the (still to be implemented) secure boot TOC0 image.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Replace most #ifdef checks for USE_HOSTCC and CONFIG_*
with normal if instructions.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
