184 lines
6.6 KiB
C
184 lines
6.6 KiB
C
/*
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* Copyright (c) 2013-2019, 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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#ifndef BL_COMMON_H
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#define BL_COMMON_H
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#include <common/ep_info.h>
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#include <common/param_header.h>
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#include <lib/utils_def.h>
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#ifndef __ASSEMBLER__
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#include <stddef.h>
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#include <stdint.h>
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#include <lib/cassert.h>
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#endif /* __ASSEMBLER__ */
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#include <export/common/bl_common_exp.h>
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#define UP U(1)
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#define DOWN U(0)
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/*******************************************************************************
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* Constants to identify the location of a memory region in a given memory
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* layout.
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******************************************************************************/
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#define TOP U(0x1)
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#define BOTTOM U(0x0)
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/*******************************************************************************
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* Constants to indicate type of exception to the common exception handler.
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******************************************************************************/
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#define SYNC_EXCEPTION_SP_EL0 U(0x0)
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#define IRQ_SP_EL0 U(0x1)
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#define FIQ_SP_EL0 U(0x2)
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#define SERROR_SP_EL0 U(0x3)
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#define SYNC_EXCEPTION_SP_ELX U(0x4)
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#define IRQ_SP_ELX U(0x5)
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#define FIQ_SP_ELX U(0x6)
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#define SERROR_SP_ELX U(0x7)
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#define SYNC_EXCEPTION_AARCH64 U(0x8)
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#define IRQ_AARCH64 U(0x9)
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#define FIQ_AARCH64 U(0xa)
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#define SERROR_AARCH64 U(0xb)
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#define SYNC_EXCEPTION_AARCH32 U(0xc)
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#define IRQ_AARCH32 U(0xd)
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#define FIQ_AARCH32 U(0xe)
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#define SERROR_AARCH32 U(0xf)
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/*
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* Mapping to connect linker symbols from .ld.S with their counterparts
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* from .scat for the BL31 image
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*/
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#if defined(USE_ARM_LINK)
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#define __BL31_END__ Load$$LR$$LR_END$$Base
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#define __BSS_START__ Load$$LR$$LR_BSS$$Base
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#define __BSS_END__ Load$$LR$$LR_BSS$$Limit
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#define __BSS_SIZE__ Load$$LR$$LR_BSS$$Length
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#define __COHERENT_RAM_START__ Load$$LR$$LR_COHERENT_RAM$$Base
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#define __COHERENT_RAM_END_UNALIGNED__ Load$$__COHERENT_RAM_EPILOGUE_UNALIGNED__$$Base
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#define __COHERENT_RAM_END__ Load$$LR$$LR_COHERENT_RAM$$Limit
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#define __COHERENT_RAM_UNALIGNED_SIZE__ Load$$__COHERENT_RAM__$$Length
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#define __CPU_OPS_START__ Load$$__CPU_OPS__$$Base
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#define __CPU_OPS_END__ Load$$__CPU_OPS__$$Limit
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#define __DATA_START__ Load$$__DATA__$$Base
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#define __DATA_END__ Load$$__DATA__$$Limit
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#define __GOT_START__ Load$$__GOT__$$Base
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#define __GOT_END__ Load$$__GOT__$$Limit
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#define __PERCPU_BAKERY_LOCK_START__ Load$$__BAKERY_LOCKS__$$Base
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#define __PERCPU_BAKERY_LOCK_END__ Load$$__BAKERY_LOCKS_EPILOGUE__$$Base
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#define __PMF_SVC_DESCS_START__ Load$$__PMF_SVC_DESCS__$$Base
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#define __PMF_SVC_DESCS_END__ Load$$__PMF_SVC_DESCS__$$Limit
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#define __PMF_TIMESTAMP_START__ Load$$__PMF_TIMESTAMP__$$Base
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#define __PMF_TIMESTAMP_END__ Load$$__PER_CPU_TIMESTAMPS__$$Limit
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#define __PMF_PERCPU_TIMESTAMP_END__ Load$$__PMF_TIMESTAMP_EPILOGUE__$$Base
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#define __RELA_END__ Load$$__RELA__$$Limit
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#define __RELA_START__ Load$$__RELA__$$Base
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#define __RODATA_START__ Load$$__RODATA__$$Base
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#define __RODATA_END__ Load$$__RODATA_EPILOGUE__$$Base
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#define __RT_SVC_DESCS_START__ Load$$__RT_SVC_DESCS__$$Base
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#define __RT_SVC_DESCS_END__ Load$$__RT_SVC_DESCS__$$Limit
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#define __RW_START__ Load$$LR$$LR_RW_DATA$$Base
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#define __RW_END__ Load$$LR$$LR_END$$Base
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#define __SPM_SHIM_EXCEPTIONS_START__ Load$$__SPM_SHIM_EXCEPTIONS__$$Base
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#define __SPM_SHIM_EXCEPTIONS_END__ Load$$__SPM_SHIM_EXCEPTIONS_EPILOGUE__$$Base
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#define __STACKS_START__ Load$$__STACKS__$$Base
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#define __STACKS_END__ Load$$__STACKS__$$Limit
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#define __TEXT_START__ Load$$__TEXT__$$Base
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#define __TEXT_END__ Load$$__TEXT_EPILOGUE__$$Base
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#endif /* USE_ARM_LINK */
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#ifndef __ASSEMBLER__
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/*
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* Declarations of linker defined symbols to help determine memory layout of
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* BL images
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*/
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#if SEPARATE_CODE_AND_RODATA
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IMPORT_SYM(uintptr_t, __TEXT_START__, BL_CODE_BASE);
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IMPORT_SYM(uintptr_t, __TEXT_END__, BL_CODE_END);
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IMPORT_SYM(uintptr_t, __RODATA_START__, BL_RO_DATA_BASE);
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IMPORT_SYM(uintptr_t, __RODATA_END__, BL_RO_DATA_END);
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#else
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IMPORT_SYM(uintptr_t, __RO_START__, BL_CODE_BASE);
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IMPORT_SYM(uintptr_t, __RO_END__, BL_CODE_END);
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#endif
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#if defined(IMAGE_BL1)
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IMPORT_SYM(uintptr_t, __BL1_ROM_END__, BL1_ROM_END);
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IMPORT_SYM(uintptr_t, __BL1_RAM_START__, BL1_RAM_BASE);
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IMPORT_SYM(uintptr_t, __BL1_RAM_END__, BL1_RAM_LIMIT);
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#elif defined(IMAGE_BL2)
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IMPORT_SYM(uintptr_t, __BL2_END__, BL2_END);
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#elif defined(IMAGE_BL2U)
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IMPORT_SYM(uintptr_t, __BL2U_END__, BL2U_END);
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#elif defined(IMAGE_BL31)
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IMPORT_SYM(uintptr_t, __BL31_START__, BL31_START);
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IMPORT_SYM(uintptr_t, __BL31_END__, BL31_END);
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#elif defined(IMAGE_BL32)
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IMPORT_SYM(uintptr_t, __BL32_END__, BL32_END);
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#endif /* IMAGE_BLX */
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/* The following symbols are only exported from the BL2 at EL3 linker script. */
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#if BL2_IN_XIP_MEM && defined(IMAGE_BL2)
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IMPORT_SYM(uintptr_t, __BL2_ROM_END__, BL2_ROM_END);
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IMPORT_SYM(uintptr_t, __BL2_RAM_START__, BL2_RAM_BASE);
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IMPORT_SYM(uintptr_t, __BL2_RAM_END__, BL2_RAM_END);
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#endif /* BL2_IN_XIP_MEM */
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/*
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* The next 2 constants identify the extents of the coherent memory region.
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* These addresses are used by the MMU setup code and therefore they must be
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* page-aligned. It is the responsibility of the linker script to ensure that
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* __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
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* page-aligned addresses.
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*/
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#if USE_COHERENT_MEM
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IMPORT_SYM(uintptr_t, __COHERENT_RAM_START__, BL_COHERENT_RAM_BASE);
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IMPORT_SYM(uintptr_t, __COHERENT_RAM_END__, BL_COHERENT_RAM_END);
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#endif
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/*******************************************************************************
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* Structure used for telling the next BL how much of a particular type of
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* memory is available for its use and how much is already used.
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******************************************************************************/
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typedef struct meminfo {
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uintptr_t total_base;
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size_t total_size;
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} meminfo_t;
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/*******************************************************************************
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* Function & variable prototypes
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******************************************************************************/
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int load_auth_image(unsigned int image_id, image_info_t *image_data);
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#if TRUSTED_BOARD_BOOT && defined(DYN_DISABLE_AUTH)
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/*
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* API to dynamically disable authentication. Only meant for development
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* systems.
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*/
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void dyn_disable_auth(void);
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#endif
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extern const char build_message[];
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extern const char version_string[];
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void print_entry_point_info(const entry_point_info_t *ep_info);
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uintptr_t page_align(uintptr_t value, unsigned dir);
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struct mmap_region;
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void setup_page_tables(const struct mmap_region *bl_regions,
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const struct mmap_region *plat_regions);
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void bl_handle_pauth(void);
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#endif /*__ASSEMBLER__*/
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#endif /* BL_COMMON_H */
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