/*
* 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 */
