228 lines
6.7 KiB
C
228 lines
6.7 KiB
C
/*
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* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <common/bl_common.h>
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#include <common/interrupt_props.h>
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#include <drivers/arm/gicv2.h>
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#include <drivers/console.h>
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#include <lib/mmio.h>
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#include "ls_16550.h"
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#include "plat_ls.h"
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#include "soc.h"
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/*
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* Placeholder variables for copying the arguments that have been passed to
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* BL31 from BL2.
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*/
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static entry_point_info_t bl32_image_ep_info;
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static entry_point_info_t bl33_image_ep_info;
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static const interrupt_prop_t g0_interrupt_props[] = {
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INTR_PROP_DESC(9, GIC_HIGHEST_SEC_PRIORITY,
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GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
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};
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gicv2_driver_data_t ls_gic_data = {
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.gicd_base = GICD_BASE,
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.gicc_base = GICC_BASE,
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.interrupt_props = g0_interrupt_props,
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.interrupt_props_num = ARRAY_SIZE(g0_interrupt_props),
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};
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/*******************************************************************************
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* Return a pointer to the 'entry_point_info' structure of the next image for the
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* security state specified. BL33 corresponds to the non-secure image type
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* while BL32 corresponds to the secure image type. A NULL pointer is returned
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* if the image does not exist.
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******************************************************************************/
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entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
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{
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entry_point_info_t *next_image_info;
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assert(sec_state_is_valid(type));
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next_image_info = (type == NON_SECURE)
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? &bl33_image_ep_info : &bl32_image_ep_info;
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if (next_image_info->pc)
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return next_image_info;
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else
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return NULL;
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}
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/*******************************************************************************
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* Perform any BL31 early platform setup common to Layerscape platforms.
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* Here is an opportunity to copy parameters passed by the calling EL (S-EL1
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* in BL2 & EL3 in BL1) before they are lost (potentially). This needs to be
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* done before the MMU is initialized so that the memory layout can be used
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* while creating page tables. BL2 has flushed this information to memory, so
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* we are guaranteed to pick up good data.
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******************************************************************************/
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void ls_bl31_early_platform_setup(void *from_bl2,
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void *plat_params_from_bl2)
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{
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static console_ls_16550_t console;
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/* Initialize the console to provide early debug support */
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console_ls_16550_register(LS_TF_UART_BASE, LS_TF_UART_CLOCK,
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LS_TF_UART_BAUDRATE, &console);
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#if RESET_TO_BL31
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/* There are no parameters from BL2 if BL31 is a reset vector */
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assert(from_bl2 == NULL);
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assert(plat_params_from_bl2 == NULL);
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#ifdef BL32_BASE
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/* Populate entry point information for BL32 */
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SET_PARAM_HEAD(&bl32_image_ep_info,
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PARAM_EP,
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VERSION_1,
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0);
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SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
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bl32_image_ep_info.pc = BL32_BASE;
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bl32_image_ep_info.spsr = ls_get_spsr_for_bl32_entry();
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#endif /* BL32_BASE */
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/* Populate entry point information for BL33 */
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SET_PARAM_HEAD(&bl33_image_ep_info,
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PARAM_EP,
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VERSION_1,
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0);
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/*
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* Tell BL31 where the non-trusted software image
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* is located and the entry state information
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*/
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bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
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bl33_image_ep_info.spsr = ls_get_spsr_for_bl33_entry();
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SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
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#else /* RESET_TO_BL31 */
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/*
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* In debug builds, we pass a special value in 'plat_params_from_bl2'
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* to verify platform parameters from BL2 to BL31.
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* In release builds, it's not used.
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*/
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assert(((unsigned long long)plat_params_from_bl2) ==
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LS_BL31_PLAT_PARAM_VAL);
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/*
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* Check params passed from BL2 should not be NULL,
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*/
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bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2;
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assert(params_from_bl2 != NULL);
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assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
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assert(params_from_bl2->h.version >= VERSION_2);
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bl_params_node_t *bl_params = params_from_bl2->head;
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/*
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* Copy BL33 and BL32 (if present), entry point information.
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* They are stored in Secure RAM, in BL2's address space.
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*/
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while (bl_params) {
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if (bl_params->image_id == BL32_IMAGE_ID)
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bl32_image_ep_info = *bl_params->ep_info;
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if (bl_params->image_id == BL33_IMAGE_ID)
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bl33_image_ep_info = *bl_params->ep_info;
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bl_params = bl_params->next_params_info;
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}
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if (bl33_image_ep_info.pc == 0)
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panic();
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#endif /* RESET_TO_BL31 */
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}
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/*******************************************************************************
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* Perform any BL31 platform setup common to Layerscape platforms
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******************************************************************************/
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void ls_bl31_platform_setup(void)
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{
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uint32_t gicc_base, gicd_base;
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NOTICE(FIRMWARE_WELCOME_STR_LS1043_BL31);
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/* Initialize the GIC driver, cpu and distributor interfaces */
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get_gic_offset(&gicc_base, &gicd_base);
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ls_gic_data.gicd_base = (uintptr_t)gicd_base;
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ls_gic_data.gicc_base = (uintptr_t)gicc_base;
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gicv2_driver_init(&ls_gic_data);
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gicv2_distif_init();
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gicv2_pcpu_distif_init();
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gicv2_cpuif_enable();
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#if RESET_TO_BL31
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/*
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* Do initial security configuration to allow DRAM/device access
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* (if earlier BL has not already done so).
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*/
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plat_ls_security_setup();
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#endif /* RESET_TO_BL31 */
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/* Enable and initialize the System level generic timer */
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mmio_write_32(LS1043_SYS_CNTCTL_BASE + CNTCR_OFF,
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CNTCR_FCREQ(0U) | CNTCR_EN);
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VERBOSE("Leave arm_bl31_platform_setup\n");
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}
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/*******************************************************************************
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* Perform any BL31 platform runtime setup prior to BL31 exit common to Layerscape
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* platforms
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******************************************************************************/
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void ls_bl31_plat_runtime_setup(void)
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{
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static console_ls_16550_t console;
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/* Initialize the runtime console */
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console_ls_16550_register(PLAT_LS1043_UART_BASE, PLAT_LS1043_UART_CLOCK,
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PLAT_LS1043_UART_BAUDRATE, &console);
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}
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void bl31_platform_setup(void)
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{
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ls_bl31_platform_setup();
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}
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void bl31_plat_runtime_setup(void)
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{
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ls_bl31_plat_runtime_setup();
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}
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/*******************************************************************************
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* Perform the very early platform specific architectural setup shared between
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* Layerscape platforms. This only does basic initialization. Later
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* architectural setup (bl31_arch_setup()) does not do anything platform
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* specific.
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******************************************************************************/
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void ls_bl31_plat_arch_setup(void)
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{
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ls_setup_page_tables(BL31_BASE,
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BL31_END - BL31_BASE,
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BL_CODE_BASE,
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BL_CODE_END,
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BL_RO_DATA_BASE,
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BL_RO_DATA_END
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#if USE_COHERENT_MEM
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, BL_COHERENT_RAM_BASE,
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BL_COHERENT_RAM_END
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#endif
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);
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enable_mmu_el3(0);
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}
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void bl31_plat_arch_setup(void)
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{
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ls_bl31_plat_arch_setup();
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}
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