/* * Copyright (c) 2013-2024, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef BL_COMMON_H #define BL_COMMON_H #include #include #include #ifndef __ASSEMBLER__ #include #include #include #endif /* __ASSEMBLER__ */ #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) /******************************************************************************* * 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 #if SPMC_AT_EL3 #define __EL3_LP_DESCS_START__ Load$$__EL3_LP_DESCS__$$Base #define __EL3_LP_DESCS_END__ Load$$__EL3_LP_DESCS__$$Limit #endif #if ENABLE_SPMD_LP #define __SPMD_LP_DESCS_START__ Load$$__SPMD_LP_DESCS__$$Base #define __SPMD_LP_DESCS_END__ Load$$__SPMD_LP_DESCS__$$Limit #endif #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 __ASSEMBLER__ /* * 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 SEPARATE_NOBITS_REGION IMPORT_SYM(uintptr_t, __NOBITS_START__, BL_NOBITS_BASE); IMPORT_SYM(uintptr_t, __NOBITS_END__, BL_NOBITS_END); #endif IMPORT_SYM(uintptr_t, __RW_END__, BL_END); #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); #elif defined(IMAGE_RMM) IMPORT_SYM(uintptr_t, __RMM_END__, RMM_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; /******************************************************************************* * 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 const char *get_version(void); 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 /*__ASSEMBLER__*/ #endif /* BL_COMMON_H */