| /* |
| * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #ifndef BL_COMMON_H |
| #define BL_COMMON_H |
| |
| #include <common/ep_info.h> |
| #include <common/param_header.h> |
| #include <lib/utils_def.h> |
| |
| #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) |
| |
| /* |
| * Mapping to connect linker symbols from .ld.S with their counterparts |
| * from .scat for the BL31 image |
| */ |
| #if defined(USE_ARM_LINK) |
| #define __BL31_END__ Load$$LR$$LR_END$$Base |
| #define __BSS_START__ Load$$LR$$LR_BSS$$Base |
| #define __BSS_END__ Load$$LR$$LR_BSS$$Limit |
| #define __BSS_SIZE__ Load$$LR$$LR_BSS$$Length |
| #define __COHERENT_RAM_START__ Load$$LR$$LR_COHERENT_RAM$$Base |
| #define __COHERENT_RAM_END_UNALIGNED__ Load$$__COHERENT_RAM_EPILOGUE_UNALIGNED__$$Base |
| #define __COHERENT_RAM_END__ Load$$LR$$LR_COHERENT_RAM$$Limit |
| #define __COHERENT_RAM_UNALIGNED_SIZE__ Load$$__COHERENT_RAM__$$Length |
| #define __CPU_OPS_START__ Load$$__CPU_OPS__$$Base |
| #define __CPU_OPS_END__ Load$$__CPU_OPS__$$Limit |
| #define __DATA_START__ Load$$__DATA__$$Base |
| #define __DATA_END__ Load$$__DATA__$$Limit |
| #define __GOT_START__ Load$$__GOT__$$Base |
| #define __GOT_END__ Load$$__GOT__$$Limit |
| #define __PERCPU_BAKERY_LOCK_START__ Load$$__BAKERY_LOCKS__$$Base |
| #define __PERCPU_BAKERY_LOCK_END__ Load$$__BAKERY_LOCKS_EPILOGUE__$$Base |
| #define __PMF_SVC_DESCS_START__ Load$$__PMF_SVC_DESCS__$$Base |
| #define __PMF_SVC_DESCS_END__ Load$$__PMF_SVC_DESCS__$$Limit |
| #define __PMF_TIMESTAMP_START__ Load$$__PMF_TIMESTAMP__$$Base |
| #define __PMF_TIMESTAMP_END__ Load$$__PER_CPU_TIMESTAMPS__$$Limit |
| #define __PMF_PERCPU_TIMESTAMP_END__ Load$$__PMF_TIMESTAMP_EPILOGUE__$$Base |
| #define __RELA_END__ Load$$__RELA__$$Limit |
| #define __RELA_START__ Load$$__RELA__$$Base |
| #define __RODATA_START__ Load$$__RODATA__$$Base |
| #define __RODATA_END__ Load$$__RODATA_EPILOGUE__$$Base |
| #define __RT_SVC_DESCS_START__ Load$$__RT_SVC_DESCS__$$Base |
| #define __RT_SVC_DESCS_END__ Load$$__RT_SVC_DESCS__$$Limit |
| #define __RW_START__ Load$$LR$$LR_RW_DATA$$Base |
| #define __RW_END__ Load$$LR$$LR_END$$Base |
| #define __SPM_SHIM_EXCEPTIONS_START__ Load$$__SPM_SHIM_EXCEPTIONS__$$Base |
| #define __SPM_SHIM_EXCEPTIONS_END__ Load$$__SPM_SHIM_EXCEPTIONS_EPILOGUE__$$Base |
| #define __STACKS_START__ Load$$__STACKS__$$Base |
| #define __STACKS_END__ Load$$__STACKS__$$Limit |
| #define __TEXT_START__ Load$$__TEXT__$$Base |
| #define __TEXT_END__ Load$$__TEXT_EPILOGUE__$$Base |
| #endif /* USE_ARM_LINK */ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <lib/cassert.h> |
| |
| /* |
| * Declarations of linker defined symbols to help determine memory layout of |
| * BL images |
| */ |
| #if SEPARATE_CODE_AND_RODATA |
| IMPORT_SYM(uintptr_t, __TEXT_START__, BL_CODE_BASE); |
| IMPORT_SYM(uintptr_t, __TEXT_END__, BL_CODE_END); |
| IMPORT_SYM(uintptr_t, __RODATA_START__, BL_RO_DATA_BASE); |
| IMPORT_SYM(uintptr_t, __RODATA_END__, BL_RO_DATA_END); |
| #else |
| IMPORT_SYM(uintptr_t, __RO_START__, BL_CODE_BASE); |
| IMPORT_SYM(uintptr_t, __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(uintptr_t, __BL2_END__, BL2_END); |
| #elif defined(IMAGE_BL2U) |
| IMPORT_SYM(uintptr_t, __BL2U_END__, BL2U_END); |
| #elif defined(IMAGE_BL31) |
| IMPORT_SYM(uintptr_t, __BL31_START__, BL31_START); |
| IMPORT_SYM(uintptr_t, __BL31_END__, BL31_END); |
| #elif defined(IMAGE_BL32) |
| IMPORT_SYM(uintptr_t, __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) |
| IMPORT_SYM(uintptr_t, __BL2_ROM_END__, BL2_ROM_END); |
| |
| IMPORT_SYM(uintptr_t, __BL2_RAM_START__, BL2_RAM_BASE); |
| IMPORT_SYM(uintptr_t, __BL2_RAM_END__, 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(uintptr_t, __COHERENT_RAM_START__, BL_COHERENT_RAM_BASE); |
| IMPORT_SYM(uintptr_t, __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); |
| |
| void bl_handle_pauth(void); |
| |
| #endif /*__ASSEMBLY__*/ |
| |
| #endif /* BL_COMMON_H */ |