When building with MbedTLS, we are using MbedTLS to decode ASN1 data
for x509, pkcs7 and mscode.
Introduce _LEGACY and _MBEDTLS kconfigs for ASN1 decoder legacy and
MbedTLS implementations respectively.

Signed-off-by: Raymond Mao <raymond....@linaro.org>
---
Changes in v2
- Initial patch.
Changes in v3
- None.
Changes in v4
- Introduce _LEGACY and _MBEDTLS kconfigs for ASN1 decoder legacy and
  MbedTLS implementations respectively.
- Update the commit subject.

 lib/Makefile         |  2 +-
 lib/mbedtls/Kconfig  | 28 ++++++++++++++++++++++++++++
 lib/mbedtls/Makefile |  2 +-
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/lib/Makefile b/lib/Makefile
index f76af77a969..c3b44c3c9ae 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -80,7 +80,7 @@ obj-$(CONFIG_$(SPL_)SHA256_LEGACY) += sha256.o
 obj-$(CONFIG_$(SPL_)SHA512_LEGACY) += sha512.o
 
 obj-$(CONFIG_CRYPT_PW) += crypt/
-obj-$(CONFIG_$(SPL_)ASN1_DECODER) += asn1_decoder.o
+obj-$(CONFIG_$(SPL_)ASN1_DECODER_LEGACY) += asn1_decoder.o
 
 obj-$(CONFIG_$(SPL_)ZLIB) += zlib/
 obj-$(CONFIG_$(SPL_)ZSTD) += zstd/
diff --git a/lib/mbedtls/Kconfig b/lib/mbedtls/Kconfig
index 87c500d6ca9..4dd2fe07a1f 100644
--- a/lib/mbedtls/Kconfig
+++ b/lib/mbedtls/Kconfig
@@ -122,12 +122,14 @@ endif # LEGACY_CRYPTO_BASIC
 
 config LEGACY_CRYPTO_CERT
        bool "legacy certificate libraries"
+       select ASN1_DECODER_LEGACY if ASN1_DECODER
        select ASYMMETRIC_PUBLIC_KEY_SUBTYPE_LEGACY if \
                ASYMMETRIC_PUBLIC_KEY_SUBTYPE
        select RSA_PUBLIC_KEY_PARSER_LEGACY if RSA_PUBLIC_KEY_PARSER
        select X509_CERTIFICATE_PARSER_LEGACY if X509_CERTIFICATE_PARSER
        select PKCS7_MESSAGE_PARSER_LEGACY if PKCS7_MESSAGE_PARSER
        select MSCODE_PARSER_LEGACY if MSCODE_PARSER
+       select SPL_ASN1_DECODER_LEGACY if ASN1_DECODER && SPL
        select SPL_ASYMMETRIC_PUBLIC_KEY_SUBTYPE_LEGACY if \
                ASYMMETRIC_PUBLIC_KEY_SUBTYPE && SPL
        select SPL_RSA_PUBLIC_KEY_PARSER_LEGACY if RSA_PUBLIC_KEY_PARSER && SPL
@@ -136,6 +138,12 @@ config LEGACY_CRYPTO_CERT
 
 if LEGACY_CRYPTO_CERT
 
+config ASN1_DECODER_LEGACY
+       bool "ASN1 decoder with legacy certificate library"
+       depends on LEGACY_CRYPTO_CERT && ASN1_DECODER
+       help
+         This option chooses legacy certificate library for ASN1 decoder.
+
 config ASYMMETRIC_PUBLIC_KEY_SUBTYPE_LEGACY
        bool "Asymmetric public key crypto with legacy certificate library"
        depends on LEGACY_CRYPTO_CERT && ASYMMETRIC_PUBLIC_KEY_SUBTYPE
@@ -177,6 +185,13 @@ config MSCODE_PARSER_LEGACY
 
 if SPL
 
+config SPL_ASN1_DECODER_LEGACY
+       bool "ASN1 decoder with legacy certificate library in SPL"
+       depends on LEGACY_CRYPTO_CERT && SPL_ASN1_DECODER
+       help
+         This option chooses legacy certificate library for ASN1 decoder in
+         SPL.
+
 config SPL_ASYMMETRIC_PUBLIC_KEY_SUBTYPE_LEGACY
        bool "Asymmetric public key crypto with legacy certificate library in 
SPL"
        depends on LEGACY_CRYPTO_CERT && SPL_ASYMMETRIC_PUBLIC_KEY_SUBTYPE
@@ -303,12 +318,14 @@ endif # MBEDTLS_LIB_CRYPTO
 
 config MBEDTLS_LIB_X509
        bool "MbedTLS certificate libraries"
+       select ASN1_DECODER_MBEDTLS if ASN1_DECODER
        select ASYMMETRIC_PUBLIC_KEY_SUBTYPE_MBEDTLS if \
                ASYMMETRIC_PUBLIC_KEY_SUBTYPE
        select RSA_PUBLIC_KEY_PARSER_MBEDTLS if RSA_PUBLIC_KEY_PARSER
        select X509_CERTIFICATE_PARSER_MBEDTLS if X509_CERTIFICATE_PARSER
        select PKCS7_MESSAGE_PARSER_MBEDTLS if PKCS7_MESSAGE_PARSER
        select MSCODE_PARSER_MBEDTLS if MSCODE_PARSER
+       select SPL_ASN1_DECODER_MBEDTLS if ASN1_DECODER && SPL
        select SPL_ASYMMETRIC_PUBLIC_KEY_SUBTYPE_MBEDTLS if \
                ASYMMETRIC_PUBLIC_KEY_SUBTYPE && SPL
        select SPL_RSA_PUBLIC_KEY_PARSER_MBEDTLS if RSA_PUBLIC_KEY_PARSER && SPL
@@ -317,6 +334,11 @@ config MBEDTLS_LIB_X509
 
 if MBEDTLS_LIB_X509
 
+config ASN1_DECODER_MBEDTLS
+       bool "ASN1 decoder with MbedTLS certificate library"
+       help
+         This option chooses MbedTLS certificate library for ASN1 decoder.
+
 config ASYMMETRIC_PUBLIC_KEY_SUBTYPE_MBEDTLS
        bool "Asymmetric public key crypto with MbedTLS certificate library"
        help
@@ -356,6 +378,12 @@ config MSCODE_PARSER_MBEDTLS
 
 if SPL
 
+config SPL_ASN1_DECODER_MBEDTLS
+       bool "ASN1 decoder with MbedTLS certificate library in SPL"
+       help
+         This option chooses MbedTLS certificate library for ASN1 decoder in
+         SPL.
+
 config SPL_ASYMMETRIC_PUBLIC_KEY_SUBTYPE_MBEDTLS
        bool "Asymmetric public key crypto with MbedTLS certificate library in 
SPL"
        help
diff --git a/lib/mbedtls/Makefile b/lib/mbedtls/Makefile
index 9c6991f8783..9b09fbcea28 100644
--- a/lib/mbedtls/Makefile
+++ b/lib/mbedtls/Makefile
@@ -46,7 +46,7 @@ mbedtls_lib_crypto-$(CONFIG_$(SPL_)SHA512_MBEDTLS) += \
 # MbedTLS X509 library
 obj-$(CONFIG_MBEDTLS_LIB_X509) += mbedtls_lib_x509.o
 mbedtls_lib_x509-y += $(MBEDTLS_LIB_DIR)/x509.o
-mbedtls_lib_x509-$(CONFIG_$(SPL_)ASN1_DECODER) += \
+mbedtls_lib_x509-$(CONFIG_$(SPL_)ASN1_DECODER_MBEDTLS) += \
        $(MBEDTLS_LIB_DIR)/asn1parse.o \
        $(MBEDTLS_LIB_DIR)/asn1write.o \
        $(MBEDTLS_LIB_DIR)/oid.o
-- 
2.25.1

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