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soc: silabs: Add soc_prep_hook() for Series 2

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CMSIS SystemInit is not used in Zephyr. Implement the functionality
that isn't already done by Zephyr startup using soc_prep_hook().

The reason the lack of TrustZone init did not create immediately obvious
issues previously is that SMU faults can only happen if the SMU clock is
enabled.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>
This commit is contained in:
Aksel Skauge Mellbye 2024-10-03 21:38:18 +02:00 • committed by Carles Cufí
commit d12de2d6b4
5 changed files with 69 additions and 5 deletions
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4
modules/hal_silabs/simplicity_sdk/CMakeLists.txt
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@ -119,10 +119,6 @@ zephyr_compile_definitions_ifdef(CONFIG_SOC_GECKO_DEV_INIT
SL_CATALOG_HFXO_MANAGER_PRESENT
)
zephyr_compile_options(
-mcmse # Cortex-M Security Extensions are needed for startup code
)
zephyr_library_sources(
${DEVICE_DIR}/SiliconLabs/${SILABS_DEVICE_FAMILY}/Source/system_${CONFIG_SOC_SERIES}.c
${EMLIB_DIR}/src/em_system.c