104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*
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* Copyright (c) 2015-2019, 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 <plat/common/platform.h>
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#include "qemu_private.h"
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/*
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* Placeholder variables for copying the arguments that have been passed to
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* BL3-1 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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/*******************************************************************************
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* Perform any BL3-1 early platform setup. Here is an opportunity to copy
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* parameters passed by the calling EL (S-EL1 in BL2 & EL3 in BL1) before
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* they are lost (potentially). This needs to be done before the MMU is
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* initialized so that the memory layout can be used while creating page
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* tables. BL2 has flushed this information to memory, so we are guaranteed
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* to pick up good data.
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******************************************************************************/
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void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
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u_register_t arg2, u_register_t arg3)
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{
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/* Initialize the console to provide early debug support */
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qemu_console_init();
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/*
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* Check params passed from BL2
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*/
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bl_params_t *params_from_bl2 = (bl_params_t *)arg0;
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assert(params_from_bl2);
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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)
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panic();
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}
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void bl31_plat_arch_setup(void)
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{
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qemu_configure_mmu_el3(BL31_BASE, (BL31_END - BL31_BASE),
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BL_CODE_BASE, BL_CODE_END,
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BL_RO_DATA_BASE, BL_RO_DATA_END,
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BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END);
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}
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void bl31_platform_setup(void)
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{
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plat_qemu_gic_init();
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}
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unsigned int plat_get_syscnt_freq2(void)
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{
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return SYS_COUNTER_FREQ_IN_TICKS;
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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
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* for the security state specified. BL3-3 corresponds to the non-secure
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* image type while BL3-2 corresponds to the secure image type. A NULL
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* pointer is returned 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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/*
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* None of the images on the ARM development platforms can have 0x0
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* as the entrypoint
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*/
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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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