[nrf fromlist] modules: hal_nordic: ironside: Add NRF_MPCCONF_API_IN_RAM

Upstream PR #: 104759

Add an option for calling the MPCCONF service from RAM, by plugging in
the `__ramfunc` attribute via IronSide SE support package's glue layer.

Signed-off-by: Grzegorz Swiderski <grzegorz.swiderski@nordicsemi.no>
(cherry picked from commit 61ece1acb3d506ab17cfb8854d9625d6a5e1b6b2)

Author: 57300

modules/hal_nordic/ironside/se/Kconfig

@@ -127,4 +127,16 @@ config NRF_PERIPHCONF_SECTION_KEEP_BY_DEFAULT
 	  CONFIG_NRF_PERIPHCONF_SECTION_STRIP=n unless explicitly configured otherwise.
 	  To override this behavior, set CONFIG_NRF_PERIPHCONF_SECTION_STRIP=y directly.
 
+config NRF_MPCCONF_API_IN_RAM
+	bool "MPCCONF API in RAM"
+	depends on IRONSIDE_SE_CALL
+	depends on !IRONSIDE_SE_CALL_ZEPHYR || !XIP
+	help
+	  Ensure that the functions used to modify and lock the MPC configuration
+	  - namely, ironside_se_mpcconf_write() and ironside_se_mpcconf_finish_init() -
+	  are placed in RAM. This may be needed to reconfigure permissions for XIP memory.
+
+	  This is not supported with the default IronSide call driver in Zephyr,
+	  unless it and all of its dependencies are also relocated to be executed from RAM.
+
 endmenu # IronSide SE

modules/hal_nordic/ironside/se/include/ironside_zephyr/se/glue_impl.h

@@ -12,4 +12,10 @@
 #define IRONSIDE_SE_ALWAYS_INLINE ALWAYS_INLINE
 #endif
 
+#if defined(CONFIG_NRF_MPCCONF_API_IN_RAM)
+/* Place MPCCONF APIs in RAM by plugging in function attributes. */
+#define IRONSIDE_SE_MPCCONF_WRITE_FUNC_ATTR       __ramfunc
+#define IRONSIDE_SE_MPCCONF_FINISH_INIT_FUNC_ATTR __ramfunc
+#endif
+
 #endif /* ZEPHYR_MODULES_HAL_NORDIC_IRONSIDE_SE_INCLUDE_IRONSIDE_ZEPHYR_SE_GLUE_IMPL_H_ */