Merge patch series "Integrate MbedTLS v3.6 LTS with U-Boot"

Raymond Mao <[email protected]> says:
Integrate MbedTLS v3.6 LTS (currently v3.6.0) with U-Boot.

Motivations:
------------

1. MbedTLS is well maintained with LTS versions.
2. LWIP is integrated with MbedTLS and easily to enable HTTPS.
3. MbedTLS recently switched license back to GPLv2.

Prerequisite:
-------------

This patch series requires mbedtls git repo to be added as a
subtree to the main U-Boot repo via:
    $ git subtree add --prefix lib/mbedtls/external/mbedtls \
          https://github.com/Mbed-TLS/mbedtls.git \
          v3.6.0 --squash
Moreover, due to the Windows-style files from mbedtls git repo,
we need to convert the CRLF endings to LF and do a commit manually:
    $ git add --renormalize .
    $ git commit

New Kconfig options:
--------------------

`MBEDTLS_LIB` is for MbedTLS general switch.
`MBEDTLS_LIB_CRYPTO` is for replacing original digest and crypto libs with
MbedTLS.
`MBEDTLS_LIB_CRYPTO_ALT` is for using original U-Boot crypto libs as
MbedTLS crypto alternatives.
`MBEDTLS_LIB_X509` is for replacing original X509, PKCS7, MSCode, ASN1,
and Pubkey parser with MbedTLS.
By default `MBEDTLS_LIB_CRYPTO_ALT` and `MBEDTLS_LIB_X509` are selected
when `MBEDTLS_LIB` is enabled.
`LEGACY_CRYPTO` is introduced as a main switch for legacy crypto library.
`LEGACY_CRYPTO_BASIC` is for the basic crypto functionalities and
`LEGACY_CRYPTO_CERT` is for the certificate related functionalities.
For each of the algorithm, a pair of `<alg>_LEGACY` and `<alg>_MBEDTLS`
Kconfig options are introduced. Meanwhile, `SPL_` Kconfig options are
introduced.

In this patch set, MBEDTLS_LIB, MBEDTLS_LIB_CRYPTO and MBEDTLS_LIB_X509
are by default enabled in qemu_arm64_defconfig and sandbox_defconfig
for testing purpose.

Patches for external MbedTLS project:
-------------------------------------

Since U-Boot uses Microsoft Authentication Code to verify PE/COFFs
executables which is not supported by MbedTLS at the moment,
addtional patches for MbedTLS are created to adapt with the EFI loader:
1. Decoding of Microsoft Authentication Code.
2. Decoding of PKCS#9 Authenticate Attributes.
3. Extending MbedTLS PKCS#7 lib to support multiple signer's certificates.
4. MbedTLS native test suites for PKCS#7 signer's info.

All above 4 patches (tagged with `mbedtls/external`) are submitted to
MbedTLS project and being reviewed, eventually they should be part of
MbedTLS LTS release.
But before that, please merge them into U-Boot, otherwise the building
will be broken when MBEDTLS_LIB_X509 is enabled.

See below PR link for the reference:
https://github.com/Mbed-TLS/mbedtls/pull/9001

Miscellaneous:
--------------

Optimized MbedTLS library size by tailoring the config file
and disabling all unnecessary features for EFI loader.
From v2, original libs (rsa, asn1_decoder, rsa_helper, md5, sha1, sha256,
sha512) are completely replaced when MbedTLS is enabled.
From v3, the size-growth is slightly reduced by refactoring Hash functions.
From v6, smaller implementations for SHA256 and SHA512 are enabled and
target size reduce significantly.
Target(QEMU arm64) size-growth when enabling MbedTLS:
v1: 6.03%
v2: 4.66%
v3 - v5: 4.55%
v6: 2.90%

Tests done:
-----------

EFI Secure Boot test (EFI variables loading and verifying, EFI signed image
verifying and booting) via U-Boot console.
EFI Secure Boot and Capsule sandbox test passed.

Known issues:
-------------

None.

Link: https://lore.kernel.org/u-boot/[email protected]/

1 files changed, 9 insertions, 6 deletions

diff --git a/lib/Makefile b/lib/Makefile
index 7ccc91f5d33..3fc428cff1d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -50,7 +50,6 @@ obj-$(CONFIG_XXHASH) += xxhash.o
 obj-y += net_utils.o
 obj-$(CONFIG_PHYSMEM) += physmem.o
 obj-y += rc4.o
-obj-$(CONFIG_SUPPORT_EMMC_RPMB) += sha256.o
 obj-$(CONFIG_RBTREE)	+= rbtree.o
 obj-$(CONFIG_BITREVERSE) += bitrev.o
 obj-y += list_sort.o
@@ -71,16 +70,18 @@ obj-$(CONFIG_$(PHASE_)CRC16) += crc16.o
 obj-y += crypto/
 
 obj-$(CONFIG_$(PHASE_)ACPI) += acpi/
-obj-$(CONFIG_$(XPL_)MD5) += md5.o
 obj-$(CONFIG_ECDSA) += ecdsa/
 obj-$(CONFIG_$(XPL_)RSA) += rsa/
 obj-$(CONFIG_HASH) += hash-checksum.o
 obj-$(CONFIG_BLAKE2) += blake2/blake2b.o
-obj-$(CONFIG_$(XPL_)SHA1) += sha1.o
-obj-$(CONFIG_$(XPL_)SHA256) += sha256.o
-obj-$(CONFIG_$(XPL_)SHA512) += sha512.o
+
+obj-$(CONFIG_$(XPL_)MD5_LEGACY) += md5.o
+obj-$(CONFIG_$(XPL_)SHA1_LEGACY) += sha1.o
+obj-$(CONFIG_$(XPL_)SHA256_LEGACY) += sha256.o
+obj-$(CONFIG_$(XPL_)SHA512_LEGACY) += sha512.o
+
 obj-$(CONFIG_CRYPT_PW) += crypt/
-obj-$(CONFIG_$(XPL_)ASN1_DECODER) += asn1_decoder.o
+obj-$(CONFIG_$(XPL_)ASN1_DECODER_LEGACY) += asn1_decoder.o
 
 obj-$(CONFIG_$(XPL_)ZLIB) += zlib/
 obj-$(CONFIG_$(XPL_)ZSTD) += zstd/
@@ -96,6 +97,8 @@ obj-$(CONFIG_LIBAVB) += libavb/
 obj-$(CONFIG_$(PHASE_)OF_LIBFDT) += libfdt/
 obj-$(CONFIG_$(PHASE_)OF_REAL) += fdtdec_common.o fdtdec.o
 
+obj-$(CONFIG_MBEDTLS_LIB) += mbedtls/
+
 ifdef CONFIG_XPL_BUILD
 obj-$(CONFIG_SPL_YMODEM_SUPPORT) += crc16-ccitt.o
 obj-$(CONFIG_$(PHASE_)HASH) += crc16-ccitt.o