hal: renesas: ra: add a portable for bsp_security.h

Add new implementation for R_BSP_SecurityInit on Zephyr

Signed-off-by: The Nguyen <[email protected]>

Author: thenguyenyf

drivers/ra/README

@@ -123,3 +123,7 @@ Patch List:
    * Disable the priority setting for IRQ in FSP HAL layer so that priority setting will not be override when Open() API is called.
    Impacted files:
       zephyr/ra/portable/bsp_irq.h
+
+   * Add new implementation for R_BSP_SecurityInit on Zephyr.
+      Impacted files:
+         zephyr/ra/portable/bsp_security.h

zephyr/ra/portable/bsp_security.h

@@ -26,6 +26,36 @@ FSP_HEADER
  * Exported global functions (to be accessed by other files)
  **********************************************************************************************************************/
 void R_BSP_NonSecureEnter(void);
+void R_BSP_RegisterProtectDisable (bsp_reg_protect_t regs_to_unprotect);
+void R_BSP_RegisterProtectEnable (bsp_reg_protect_t regs_to_protect);
+
+/*******************************************************************************************************************//**
+ * Initialize security features for TrustZone.
+ *
+ * This function initializes ARM security register and Renesas SAR registers for secure projects.
+ *
+ * @note IDAU settings must be configured to match project settings with a separate configuration tool.
+ **********************************************************************************************************************/
+__STATIC_INLINE void R_BSP_SecurityInit (void)
+{
+#if FSP_PRIV_TZ_USE_SECURE_REGS
+	/* Disable protection using PRCR register. */
+	R_BSP_RegisterProtectDisable(BSP_REG_PROTECT_SAR);
+
+	/* Initialize peripherals to secure mode for flat projects */
+	R_PSCU->PSARB = 0;
+	R_PSCU->PSARC = 0;
+	R_PSCU->PSARD = 0;
+	R_PSCU->PSARE = 0;
+
+	R_CPSCU->ICUSARG = 0;
+	R_CPSCU->ICUSARH = 0;
+	R_CPSCU->ICUSARI = 0;
+
+	/* Enable protection using PRCR register. */
+	R_BSP_RegisterProtectEnable(BSP_REG_PROTECT_SAR);
+#endif
+}
 
 /** Common macro for FSP header files. There is also a corresponding FSP_HEADER macro at the top of this file. */
 FSP_FOOTER