U-Boot requires to access x509_internal.h, mbedtls_sha256_context and
mbedtls_sha1_context in the porting layer, and this requires to
enable MBEDTLS_ALLOW_PRIVATE_ACCESS.

Enable it to mscode and pkcs7_parser to fix a mbedtls internal building
error when X509 is selected.

Moreover, Move it to a separate file to avoid enabling it in multiple
places.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Building SPL fails with MBEDTLS enabled.
Currently we don't need it there.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>

Implement digest shim layer on top of MbedTLS crypto library.
Introduce <alg>_MBEDTLS kconfig for MbedTLS crypto implementations.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>

We don't need an API specially for non-watchdog since sha1_csum_wd
supports it by disabling CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG.
Set 0x10000 as default chunk size for SHA1.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

Adapt digest header files to support both original libs and MbedTLS
by switching on/off MBEDTLS_LIB_CRYPTO.
Introduce <alg>_LEGACY kconfig for legacy hash implementations.
sha256.o should depend on SHA256 kconfig only but not SUPPORT_EMMC_RPMB,
SHA256 should be selected when SUPPORT_EMMC_RPMB is enabled instead.

`IS_ENABLED` or `CONFIG_IS_ENABLED` is not applicable here, since
including <linux/kconfig.h> causes undefined reference on schedule()
with sandbox build, as <linux/kconfig.h> includes <generated/autoconf.h>
which enables `CONFIG_HW_WATCHDOG` and `CONFIG_WATCHDOG` but no schedule()
are defined in sandbox build,
Thus we use `#if defined(CONFIG_MBEDTLS_LIB_CRYPTO)` instead.

Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>

A few headers rely on indirect inclusion of <linux/types.h> or
<linux/kernel.h> so add them directly. In the case of <netdev.h> add a
"struct bd_info;" as well rather than the large header chain to resolve
that.

Signed-off-by: Tom Rini <trini@konsulko.com>

sha1 digest size is 5*32-bit => 160-bit. Using 64-bit unsigned long
does not cause issue with the current sha1 implementation, but could
be problematic for vectorized access.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>