298 lines
9.3 KiB
C
298 lines
9.3 KiB
C
// SPDX-License-Identifier: BSD-3-Clause
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/*
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* Reference to the ARM TF Project,
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* plat/arm/common/arm_bl2_setup.c
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* Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights
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* reserved.
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* Copyright (C) 2016 Rockchip Electronic Co.,Ltd
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* Written by Kever Yang <kever.yang@rock-chips.com>
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* Copyright (C) 2017 Theobroma Systems Design und Consulting GmbH
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*/
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#include <common.h>
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#include <atf_common.h>
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#include <cpu_func.h>
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#include <errno.h>
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#include <image.h>
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#include <log.h>
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#include <spl.h>
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#include <asm/cache.h>
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/* Holds all the structures we need for bl31 parameter passing */
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struct bl2_to_bl31_params_mem {
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struct bl31_params bl31_params;
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struct atf_image_info bl31_image_info;
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struct atf_image_info bl32_image_info;
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struct atf_image_info bl33_image_info;
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struct entry_point_info bl33_ep_info;
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struct entry_point_info bl32_ep_info;
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struct entry_point_info bl31_ep_info;
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};
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struct bl2_to_bl31_params_mem_v2 {
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struct bl_params bl_params;
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struct bl_params_node bl31_params_node;
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struct bl_params_node bl32_params_node;
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struct bl_params_node bl33_params_node;
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struct atf_image_info bl31_image_info;
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struct atf_image_info bl32_image_info;
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struct atf_image_info bl33_image_info;
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struct entry_point_info bl33_ep_info;
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struct entry_point_info bl32_ep_info;
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struct entry_point_info bl31_ep_info;
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};
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struct bl31_params *bl2_plat_get_bl31_params_default(uintptr_t bl32_entry,
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uintptr_t bl33_entry,
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uintptr_t fdt_addr)
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{
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static struct bl2_to_bl31_params_mem bl31_params_mem;
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struct bl31_params *bl2_to_bl31_params;
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struct entry_point_info *bl32_ep_info;
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struct entry_point_info *bl33_ep_info;
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/*
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* Initialise the memory for all the arguments that needs to
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* be passed to BL31
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*/
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memset(&bl31_params_mem, 0, sizeof(struct bl2_to_bl31_params_mem));
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/* Assign memory for TF related information */
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bl2_to_bl31_params = &bl31_params_mem.bl31_params;
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SET_PARAM_HEAD(bl2_to_bl31_params, ATF_PARAM_BL31, ATF_VERSION_1, 0);
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/* Fill BL31 related information */
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bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
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SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info,
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ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
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/* Fill BL32 related information */
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bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
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bl32_ep_info = &bl31_params_mem.bl32_ep_info;
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SET_PARAM_HEAD(bl32_ep_info, ATF_PARAM_EP, ATF_VERSION_1,
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ATF_EP_SECURE);
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/* secure payload is optional, so set pc to 0 if absent */
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bl32_ep_info->args.arg3 = fdt_addr;
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bl32_ep_info->pc = bl32_entry ? bl32_entry : 0;
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bl32_ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
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DISABLE_ALL_EXECPTIONS);
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bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
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SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info,
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ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
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/* Fill BL33 related information */
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bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
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bl33_ep_info = &bl31_params_mem.bl33_ep_info;
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SET_PARAM_HEAD(bl33_ep_info, ATF_PARAM_EP, ATF_VERSION_1,
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ATF_EP_NON_SECURE);
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/* BL33 expects to receive the primary CPU MPID (through x0) */
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bl33_ep_info->args.arg0 = 0xffff & read_mpidr();
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bl33_ep_info->pc = bl33_entry;
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bl33_ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
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DISABLE_ALL_EXECPTIONS);
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bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
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SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info,
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ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0);
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return bl2_to_bl31_params;
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}
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__weak struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
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uintptr_t bl33_entry,
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uintptr_t fdt_addr)
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{
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return bl2_plat_get_bl31_params_default(bl32_entry, bl33_entry,
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fdt_addr);
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}
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struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
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uintptr_t bl33_entry,
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uintptr_t fdt_addr)
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{
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static struct bl2_to_bl31_params_mem_v2 bl31_params_mem;
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struct bl_params *bl_params;
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struct bl_params_node *bl_params_node;
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/*
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* Initialise the memory for all the arguments that needs to
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* be passed to BL31
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*/
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memset(&bl31_params_mem, 0, sizeof(bl31_params_mem));
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/* Assign memory for TF related information */
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bl_params = &bl31_params_mem.bl_params;
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SET_PARAM_HEAD(bl_params, ATF_PARAM_BL_PARAMS, ATF_VERSION_2, 0);
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bl_params->head = &bl31_params_mem.bl31_params_node;
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/* Fill BL31 related information */
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bl_params_node = &bl31_params_mem.bl31_params_node;
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bl_params_node->image_id = ATF_BL31_IMAGE_ID;
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bl_params_node->image_info = &bl31_params_mem.bl31_image_info;
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bl_params_node->ep_info = &bl31_params_mem.bl31_ep_info;
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bl_params_node->next_params_info = &bl31_params_mem.bl32_params_node;
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SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY,
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ATF_VERSION_2, 0);
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/* Fill BL32 related information */
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bl_params_node = &bl31_params_mem.bl32_params_node;
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bl_params_node->image_id = ATF_BL32_IMAGE_ID;
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bl_params_node->image_info = &bl31_params_mem.bl32_image_info;
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bl_params_node->ep_info = &bl31_params_mem.bl32_ep_info;
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bl_params_node->next_params_info = &bl31_params_mem.bl33_params_node;
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SET_PARAM_HEAD(bl_params_node->ep_info, ATF_PARAM_EP,
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ATF_VERSION_2, ATF_EP_SECURE);
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/* secure payload is optional, so set pc to 0 if absent */
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bl_params_node->ep_info->args.arg3 = fdt_addr;
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bl_params_node->ep_info->pc = bl32_entry ? bl32_entry : 0;
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bl_params_node->ep_info->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
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DISABLE_ALL_EXECPTIONS);
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SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY,
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ATF_VERSION_2, 0);
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/* Fill BL33 related information */
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bl_params_node = &bl31_params_mem.bl33_params_node;
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bl_params_node->image_id = ATF_BL33_IMAGE_ID;
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bl_params_node->image_info = &bl31_params_mem.bl33_image_info;
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bl_params_node->ep_info = &bl31_params_mem.bl33_ep_info;
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bl_params_node->next_params_info = NULL;
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SET_PARAM_HEAD(bl_params_node->ep_info, ATF_PARAM_EP,
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ATF_VERSION_2, ATF_EP_NON_SECURE);
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/* BL33 expects to receive the primary CPU MPID (through x0) */
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bl_params_node->ep_info->args.arg0 = 0xffff & read_mpidr();
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bl_params_node->ep_info->pc = bl33_entry;
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bl_params_node->ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
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DISABLE_ALL_EXECPTIONS);
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SET_PARAM_HEAD(bl_params_node->image_info, ATF_PARAM_IMAGE_BINARY,
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ATF_VERSION_2, 0);
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return bl_params;
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}
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__weak struct bl_params *bl2_plat_get_bl31_params_v2(uintptr_t bl32_entry,
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uintptr_t bl33_entry,
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uintptr_t fdt_addr)
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{
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return bl2_plat_get_bl31_params_v2_default(bl32_entry, bl33_entry,
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fdt_addr);
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}
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static inline void raw_write_daif(unsigned int daif)
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{
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__asm__ __volatile__("msr DAIF, %0\n\t" : : "r" (daif) : "memory");
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}
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typedef void (*atf_entry_t)(struct bl31_params *params, void *plat_params);
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static void bl31_entry(uintptr_t bl31_entry, uintptr_t bl32_entry,
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uintptr_t bl33_entry, uintptr_t fdt_addr)
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{
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atf_entry_t atf_entry = (atf_entry_t)bl31_entry;
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void *bl31_params;
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if (CONFIG_IS_ENABLED(ATF_LOAD_IMAGE_V2))
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bl31_params = bl2_plat_get_bl31_params_v2(bl32_entry,
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bl33_entry,
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fdt_addr);
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else
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bl31_params = bl2_plat_get_bl31_params(bl32_entry, bl33_entry,
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fdt_addr);
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raw_write_daif(SPSR_EXCEPTION_MASK);
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dcache_disable();
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atf_entry(bl31_params, (void *)fdt_addr);
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}
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static int spl_fit_images_find(void *blob, int os)
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{
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int parent, node, ndepth = 0;
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const void *data;
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if (!blob)
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return -FDT_ERR_BADMAGIC;
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parent = fdt_path_offset(blob, "/fit-images");
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if (parent < 0)
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return -FDT_ERR_NOTFOUND;
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for (node = fdt_next_node(blob, parent, &ndepth);
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(node >= 0) && (ndepth > 0);
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node = fdt_next_node(blob, node, &ndepth)) {
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if (ndepth != 1)
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continue;
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data = fdt_getprop(blob, node, FIT_OS_PROP, NULL);
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if (!data)
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continue;
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if (genimg_get_os_id(data) == os)
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return node;
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};
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return -FDT_ERR_NOTFOUND;
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}
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uintptr_t spl_fit_images_get_entry(void *blob, int node)
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{
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ulong val;
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int ret;
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ret = fit_image_get_entry(blob, node, &val);
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if (ret)
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ret = fit_image_get_load(blob, node, &val);
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debug("%s: entry point 0x%lx\n", __func__, val);
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return val;
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}
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void spl_invoke_atf(struct spl_image_info *spl_image)
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{
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uintptr_t bl32_entry = 0;
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uintptr_t bl33_entry = CONFIG_SYS_TEXT_BASE;
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void *blob = spl_image->fdt_addr;
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uintptr_t platform_param = (uintptr_t)blob;
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int node;
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/*
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* Find the OP-TEE binary (in /fit-images) load address or
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* entry point (if different) and pass it as the BL3-2 entry
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* point, this is optional.
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*/
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node = spl_fit_images_find(blob, IH_OS_TEE);
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if (node >= 0)
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bl32_entry = spl_fit_images_get_entry(blob, node);
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/*
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* Find the U-Boot binary (in /fit-images) load addreess or
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* entry point (if different) and pass it as the BL3-3 entry
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* point.
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* This will need to be extended to support Falcon mode.
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*/
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node = spl_fit_images_find(blob, IH_OS_U_BOOT);
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if (node >= 0)
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bl33_entry = spl_fit_images_get_entry(blob, node);
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/*
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* If ATF_NO_PLATFORM_PARAM is set, we override the platform
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* parameter and always pass 0. This is a workaround for
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* older ATF versions that have insufficiently robust (or
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* overzealous) argument validation.
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*/
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if (CONFIG_IS_ENABLED(ATF_NO_PLATFORM_PARAM))
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platform_param = 0;
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/*
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* We don't provide a BL3-2 entry yet, but this will be possible
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* using similar logic.
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*/
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bl31_entry(spl_image->entry_point, bl32_entry,
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bl33_entry, platform_param);
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}
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