/* * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef BL_COMMON_H #define BL_COMMON_H #include #include #include #define UP U(1) #define DOWN U(0) /******************************************************************************* * Constants to identify the location of a memory region in a given memory * layout. ******************************************************************************/ #define TOP U(0x1) #define BOTTOM U(0x0) /* * The following are used for image state attributes. * Image can only be in one of the following state. */ #define IMAGE_STATE_RESET U(0) #define IMAGE_STATE_COPIED U(1) #define IMAGE_STATE_COPYING U(2) #define IMAGE_STATE_AUTHENTICATED U(3) #define IMAGE_STATE_EXECUTED U(4) #define IMAGE_STATE_INTERRUPTED U(5) #define IMAGE_ATTRIB_SKIP_LOADING U(0x02) #define IMAGE_ATTRIB_PLAT_SETUP U(0x04) #define INVALID_IMAGE_ID U(0xFFFFFFFF) /******************************************************************************* * Constants to indicate type of exception to the common exception handler. ******************************************************************************/ #define SYNC_EXCEPTION_SP_EL0 U(0x0) #define IRQ_SP_EL0 U(0x1) #define FIQ_SP_EL0 U(0x2) #define SERROR_SP_EL0 U(0x3) #define SYNC_EXCEPTION_SP_ELX U(0x4) #define IRQ_SP_ELX U(0x5) #define FIQ_SP_ELX U(0x6) #define SERROR_SP_ELX U(0x7) #define SYNC_EXCEPTION_AARCH64 U(0x8) #define IRQ_AARCH64 U(0x9) #define FIQ_AARCH64 U(0xa) #define SERROR_AARCH64 U(0xb) #define SYNC_EXCEPTION_AARCH32 U(0xc) #define IRQ_AARCH32 U(0xd) #define FIQ_AARCH32 U(0xe) #define SERROR_AARCH32 U(0xf) #ifndef __ASSEMBLY__ #include #include #include /* * Declarations of linker defined symbols to help determine memory layout of * BL images */ #if SEPARATE_CODE_AND_RODATA IMPORT_SYM(unsigned long, __TEXT_START__, BL_CODE_BASE); IMPORT_SYM(unsigned long, __TEXT_END__, BL_CODE_END); IMPORT_SYM(unsigned long, __RODATA_START__, BL_RO_DATA_BASE); IMPORT_SYM(unsigned long, __RODATA_END__, BL_RO_DATA_END); #else IMPORT_SYM(unsigned long, __RO_START__, BL_CODE_BASE); IMPORT_SYM(unsigned long, __RO_END__, BL_CODE_END); #endif #if defined(IMAGE_BL1) IMPORT_SYM(uintptr_t, __BL1_ROM_END__, BL1_ROM_END); IMPORT_SYM(uintptr_t, __BL1_RAM_START__, BL1_RAM_BASE); IMPORT_SYM(uintptr_t, __BL1_RAM_END__, BL1_RAM_LIMIT); #elif defined(IMAGE_BL2) IMPORT_SYM(unsigned long, __BL2_END__, BL2_END); #elif defined(IMAGE_BL2U) IMPORT_SYM(unsigned long, __BL2U_END__, BL2U_END); #elif defined(IMAGE_BL31) IMPORT_SYM(unsigned long, __BL31_START__, BL31_START); IMPORT_SYM(unsigned long, __BL31_END__, BL31_END); #elif defined(IMAGE_BL32) IMPORT_SYM(unsigned long, __BL32_END__, BL32_END); #endif /* IMAGE_BLX */ /* The following symbols are only exported from the BL2 at EL3 linker script. */ #if BL2_IN_XIP_MEM && defined(IMAGE_BL2) extern uintptr_t __BL2_ROM_END__; #define BL2_ROM_END (uintptr_t)(&__BL2_ROM_END__) extern uintptr_t __BL2_RAM_START__; extern uintptr_t __BL2_RAM_END__; #define BL2_RAM_BASE (uintptr_t)(&__BL2_RAM_START__) #define BL2_RAM_LIMIT (uintptr_t)(&__BL2_RAM_END__) #endif /* BL2_IN_XIP_MEM */ /* * The next 2 constants identify the extents of the coherent memory region. * These addresses are used by the MMU setup code and therefore they must be * page-aligned. It is the responsibility of the linker script to ensure that * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to * page-aligned addresses. */ #if USE_COHERENT_MEM IMPORT_SYM(unsigned long, __COHERENT_RAM_START__, BL_COHERENT_RAM_BASE); IMPORT_SYM(unsigned long, __COHERENT_RAM_END__, BL_COHERENT_RAM_END); #endif /******************************************************************************* * Structure used for telling the next BL how much of a particular type of * memory is available for its use and how much is already used. ******************************************************************************/ typedef struct meminfo { uintptr_t total_base; size_t total_size; } meminfo_t; /***************************************************************************** * Image info binary provides information from the image loader that * can be used by the firmware to manage available trusted RAM. * More advanced firmware image formats can provide additional * information that enables optimization or greater flexibility in the * common firmware code *****************************************************************************/ typedef struct image_info { param_header_t h; uintptr_t image_base; /* physical address of base of image */ uint32_t image_size; /* bytes read from image file */ uint32_t image_max_size; } image_info_t; /***************************************************************************** * The image descriptor struct definition. *****************************************************************************/ typedef struct image_desc { /* Contains unique image id for the image. */ unsigned int image_id; /* * This member contains Image state information. * Refer IMAGE_STATE_XXX defined above. */ unsigned int state; uint32_t copied_size; /* image size copied in blocks */ image_info_t image_info; entry_point_info_t ep_info; } image_desc_t; /* BL image node in the BL image loading sequence */ typedef struct bl_load_info_node { unsigned int image_id; image_info_t *image_info; struct bl_load_info_node *next_load_info; } bl_load_info_node_t; /* BL image head node in the BL image loading sequence */ typedef struct bl_load_info { param_header_t h; bl_load_info_node_t *head; } bl_load_info_t; /* BL image node in the BL image execution sequence */ typedef struct bl_params_node { unsigned int image_id; image_info_t *image_info; entry_point_info_t *ep_info; struct bl_params_node *next_params_info; } bl_params_node_t; /* * BL image head node in the BL image execution sequence * It is also used to pass information to next BL image. */ typedef struct bl_params { param_header_t h; bl_params_node_t *head; } bl_params_t; /******************************************************************************* * Function & variable prototypes ******************************************************************************/ int load_auth_image(unsigned int image_id, image_info_t *image_data); #if TRUSTED_BOARD_BOOT && defined(DYN_DISABLE_AUTH) /* * API to dynamically disable authentication. Only meant for development * systems. */ void dyn_disable_auth(void); #endif extern const char build_message[]; extern const char version_string[]; void print_entry_point_info(const entry_point_info_t *ep_info); uintptr_t page_align(uintptr_t value, unsigned dir); struct mmap_region; void setup_page_tables(const struct mmap_region *bl_regions, const struct mmap_region *plat_regions); #endif /*__ASSEMBLY__*/ #endif /* BL_COMMON_H */