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Expand "Configuration file split" section

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Signed-off-by: Ronald Cron <ronald.cron@arm.com>
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Ronald Cron
2025-10-08 11:29:52 +02:00
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docs/4.0-migration-guide/repo-split.md
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@@ -29,7 +29,23 @@ These changes reflect the move of cryptographic, cryptographic-adjacent, and pla
(\*) The `library` and `include/mbedtls` directories still exist in Mbed TLS, but not contain only TLS and X.509 components.
### Configuration file split
Cryptography and platform configuration options have been moved from `mbedtls_config.h` to `crypto_config.h`, which is now mandatory. See [Compile-time configuration](#compile-time-confiuration).
Cryptography and platform configuration options have been moved from `include/mbedtls/mbedtls_config.h` to `tf-psa-crypto/include/psa/crypto_config.h`, which is now mandatory.
See [Compile-time configuration](#compile-time-configuration).
The header `include/mbedtls/mbedtls_config.h` still exists and now contains only the TLS and X.509 configuration options.
If you use the Python script `scripts/config.py` to adjust your configuration, you do not need to modify your scripts to specify which configuration file to edit, the script automatically updates the correct file.
There has been significant changes in the configuration options, primarily affecting cryptography.
#### Cryptography configuration
- See [psa-transition.md](https://github.com/Mbed-TLS/TF-PSA-Crypto/blob/development/docs/psa-transition.md#compile-time-configuration).
- See also the following sections in the TF-PSA-Crypto 1.0 migration guide:
- *PSA as the Only Cryptography API* and its sub-section *Impact on the Library Configuration*
- *Random Number Generation Configuration*
#### TLS configuration
For details about TLS-related changes, see [Changes to TLS options](#changes-to-tls-options).
### Impact on some usages of the library