Tegra: memctrl: remove unused TZRAM setup function

This patch removes the unused TZRAM setup function from the memory
controller driver.

Change-Id: Ic16f21fb84c47df71be6ab3e1e286640daa39291
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/common/tegra_bl31_setup.c

@@ -247,12 +247,6 @@ void bl31_platform_setup(void)
 	 */
 	tegra_memctrl_setup();
 
-	/*
-	 * Set up the TZRAM memory aperture to allow only secure world
-	 * access
-	 */
-	tegra_memctrl_tzram_setup(TEGRA_TZRAM_BASE, TEGRA_TZRAM_SIZE);
-
 	/*
 	 * Late setup handler to allow platforms to performs additional
 	 * functionality.

plat/nvidia/tegra/common/tegra_pm.c

@@ -180,11 +180,6 @@ void tegra_pwr_domain_on_finish(const psci_power_state_t *target_state)
 		tegra_memctrl_tzdram_setup(plat_params->tzdram_base,
 			(uint32_t)plat_params->tzdram_size);
 
-		/*
-		 * Set up the TZRAM memory aperture to allow only secure world
-		 * access
-		 */
-		tegra_memctrl_tzram_setup(TEGRA_TZRAM_BASE, TEGRA_TZRAM_SIZE);
 	} else {
 		/*
 		 * Initialize the GIC cpu and distributor interfaces

plat/nvidia/tegra/drivers/memctrl/memctrl_v1.c

 /*
  * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -92,20 +93,6 @@ void tegra_memctrl_tzdram_setup(uint64_t phys_base, uint32_t size_in_bytes)
 	tegra_mc_write_32(MC_SECURITY_CFG1_0, size_in_bytes >> 20);
 }
 
-/*
- * Secure the BL31 TZRAM aperture.
- *
- * phys_base = physical base of TZRAM aperture
- * size_in_bytes = size of aperture in bytes
- */
-void tegra_memctrl_tzram_setup(uint64_t phys_base, uint32_t size_in_bytes)
-{
-	/*
-	 * The v1 hardware controller does not have any registers
-	 * for setting up the on-chip TZRAM.
-	 */
-}
-
 static void tegra_clear_videomem(uintptr_t non_overlap_area_start,
 				 unsigned long long non_overlap_area_size)
 {

plat/nvidia/tegra/include/drivers/memctrl.h

 /*
  * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -10,7 +11,6 @@
 void tegra_memctrl_setup(void);
 void tegra_memctrl_restore_settings(void);
 void tegra_memctrl_tzdram_setup(uint64_t phys_base, uint32_t size_in_bytes);
-void tegra_memctrl_tzram_setup(uint64_t phys_base, uint32_t size_in_bytes);
 void tegra_memctrl_videomem_setup(uint64_t phys_base, uint32_t size_in_bytes);
 void tegra_memctrl_disable_ahb_redirection(void);
 void tegra_memctrl_clear_pending_interrupts(void);