254 lines
6.9 KiB
C
254 lines
6.9 KiB
C
/*
|
|
* Copyright (c) 2013-2014, Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/*
|
|
* DESCRIPTION
|
|
* Platform independent, commonly used macros and defines related to linker
|
|
* script.
|
|
*
|
|
* This file may be included by:
|
|
* - Linker script files: for linker section declarations
|
|
* - C files: for external declaration of address or size of linker section
|
|
* - Assembly files: for external declaration of address or size of linker
|
|
* section
|
|
*/
|
|
|
|
#ifndef _LINKERDEFS_H
|
|
#define _LINKERDEFS_H
|
|
|
|
#include <toolchain.h>
|
|
#include <linker/sections.h>
|
|
#include <misc/util.h>
|
|
|
|
/* include platform dependent linker-defs */
|
|
#ifdef CONFIG_X86
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_ARM)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_ARC)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_NIOS2)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_RISCV32)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_XTENSA)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_ARCH_POSIX)
|
|
/* Nothing yet to include */
|
|
#else
|
|
#error Arch not supported.
|
|
#endif
|
|
|
|
#ifdef _LINKER
|
|
|
|
|
|
/*
|
|
* Space for storing per device busy bitmap. Since we do not know beforehand
|
|
* the number of devices, we go through the below mechanism to allocate the
|
|
* required space.
|
|
*/
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
#define DEVICE_COUNT \
|
|
((__device_init_end - __device_init_start) / _DEVICE_STRUCT_SIZE)
|
|
#define DEV_BUSY_SZ (((DEVICE_COUNT + 31) / 32) * 4)
|
|
#define DEVICE_BUSY_BITFIELD() \
|
|
FILL(0x00) ; \
|
|
__device_busy_start = .; \
|
|
. = . + DEV_BUSY_SZ; \
|
|
__device_busy_end = .;
|
|
#else
|
|
#define DEVICE_BUSY_BITFIELD()
|
|
#endif
|
|
|
|
/*
|
|
* generate a symbol to mark the start of the device initialization objects for
|
|
* the specified level, then link all of those objects (sorted by priority);
|
|
* ensure the objects aren't discarded if there is no direct reference to them
|
|
*/
|
|
|
|
#define DEVICE_INIT_LEVEL(level) \
|
|
__device_##level##_start = .; \
|
|
KEEP(*(SORT(.init_##level[0-9]))); \
|
|
KEEP(*(SORT(.init_##level[1-9][0-9]))); \
|
|
|
|
/*
|
|
* link in device initialization objects for all devices that are automatically
|
|
* initialized by the kernel; the objects are sorted in the order they will be
|
|
* initialized (i.e. ordered by level, sorted by priority within a level)
|
|
*/
|
|
|
|
#define DEVICE_INIT_SECTIONS() \
|
|
__device_init_start = .; \
|
|
DEVICE_INIT_LEVEL(PRE_KERNEL_1) \
|
|
DEVICE_INIT_LEVEL(PRE_KERNEL_2) \
|
|
DEVICE_INIT_LEVEL(POST_KERNEL) \
|
|
DEVICE_INIT_LEVEL(APPLICATION) \
|
|
__device_init_end = .; \
|
|
DEVICE_BUSY_BITFIELD() \
|
|
|
|
|
|
/* define a section for undefined device initialization levels */
|
|
#define DEVICE_INIT_UNDEFINED_SECTION() \
|
|
KEEP(*(SORT(.init_[_A-Z0-9]*))) \
|
|
|
|
/*
|
|
* link in shell initialization objects for all modules that use shell and
|
|
* their shell commands are automatically initialized by the kernel.
|
|
*/
|
|
|
|
#define SHELL_INIT_SECTIONS() \
|
|
__shell_module_start = .; \
|
|
KEEP(*(".shell_module_*")); \
|
|
__shell_module_end = .; \
|
|
__shell_cmd_start = .; \
|
|
KEEP(*(".shell_cmd_*")); \
|
|
__shell_cmd_end = .; \
|
|
|
|
#ifdef CONFIG_APPLICATION_MEMORY
|
|
|
|
#ifndef NUM_KERNEL_OBJECT_FILES
|
|
#error "Expected NUM_KERNEL_OBJECT_FILES to be defined"
|
|
#elif NUM_KERNEL_OBJECT_FILES > 19
|
|
#error "Max supported kernel objects is 19."
|
|
/* TODO: Using the preprocessor to do this was a mistake. Rewrite to
|
|
scale better. e.g. by aggregating the kernel objects into two
|
|
archives like KBuild did.*/
|
|
#endif
|
|
|
|
#define X(i, j) KERNEL_OBJECT_FILE_##i (j)
|
|
#define Y(i, j) KERNEL_OBJECT_FILE_##i
|
|
|
|
#define KERNEL_INPUT_SECTION(sect) \
|
|
UTIL_LISTIFY(NUM_KERNEL_OBJECT_FILES, X, sect)
|
|
#define APP_INPUT_SECTION(sect) \
|
|
*(EXCLUDE_FILE (UTIL_LISTIFY(NUM_KERNEL_OBJECT_FILES, Y, ~)) sect)
|
|
|
|
#else
|
|
#define KERNEL_INPUT_SECTION(sect) *(sect)
|
|
#define APP_INPUT_SECTION(sect) *(sect)
|
|
#endif
|
|
|
|
|
|
#ifdef CONFIG_X86 /* LINKER FILES: defines used by linker script */
|
|
/* Should be moved to linker-common-defs.h */
|
|
#if defined(CONFIG_XIP)
|
|
#define ROMABLE_REGION ROM
|
|
#else
|
|
#define ROMABLE_REGION RAM
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* If image is loaded via kexec Linux system call, then program
|
|
* headers need to be page aligned.
|
|
* This can be done by section page aligning.
|
|
*/
|
|
#ifdef CONFIG_BOOTLOADER_KEXEC
|
|
#define KEXEC_PGALIGN_PAD(x) . = ALIGN(x);
|
|
#else
|
|
#define KEXEC_PGALIGN_PAD(x)
|
|
#endif
|
|
|
|
#elif defined(_ASMLANGUAGE)
|
|
|
|
/* Assembly FILES: declaration defined by the linker script */
|
|
GDATA(__bss_start)
|
|
GDATA(__bss_num_words)
|
|
#ifdef CONFIG_XIP
|
|
GDATA(__data_rom_start)
|
|
GDATA(__data_ram_start)
|
|
GDATA(__data_num_words)
|
|
#endif
|
|
|
|
#else /* ! _ASMLANGUAGE */
|
|
|
|
#include <zephyr/types.h>
|
|
|
|
#ifdef CONFIG_APPLICATION_MEMORY
|
|
/* Memory owned by the application. Start and end will be aligned for memory
|
|
* management/protection hardware for the target architecture.
|
|
|
|
* The policy for this memory will be to configure all of it as user thread
|
|
* accessible. It consists of all non-kernel globals.
|
|
*/
|
|
extern char __app_ram_start[];
|
|
extern char __app_ram_end[];
|
|
extern char __app_ram_size[];
|
|
#endif
|
|
|
|
/* Memory owned by the kernel. Start and end will be aligned for memory
|
|
* management/protection hardware for the target architecture..
|
|
*
|
|
* Consists of all kernel-side globals, all kernel objects, all thread stacks,
|
|
* and all currently unused RAM. If CONFIG_APPLICATION_MEMORY is not enabled,
|
|
* has all globals, not just kernel side.
|
|
*
|
|
* Except for the stack of the currently executing thread, none of this memory
|
|
* is normally accessible to user threads unless specifically granted at
|
|
* runtime.
|
|
*/
|
|
extern char __kernel_ram_start[];
|
|
extern char __kernel_ram_end[];
|
|
extern char __kernel_ram_size[];
|
|
|
|
/* Used by _bss_zero or arch-specific implementation */
|
|
extern char __bss_start[];
|
|
extern char __bss_end[];
|
|
#ifdef CONFIG_APPLICATION_MEMORY
|
|
extern char __app_bss_start[];
|
|
extern char __app_bss_end[];
|
|
#endif
|
|
|
|
/* Used by _data_copy() or arch-specific implementation */
|
|
#ifdef CONFIG_XIP
|
|
extern char __data_rom_start[];
|
|
extern char __data_ram_start[];
|
|
extern char __data_ram_end[];
|
|
#ifdef CONFIG_APPLICATION_MEMORY
|
|
extern char __app_data_rom_start[];
|
|
extern char __app_data_ram_start[];
|
|
extern char __app_data_ram_end[];
|
|
#endif /* CONFIG_APPLICATION_MEMORY */
|
|
#endif /* CONFIG_XIP */
|
|
|
|
/* Includes text and rodata */
|
|
extern char _image_rom_start[];
|
|
extern char _image_rom_end[];
|
|
extern char _image_rom_size[];
|
|
|
|
/* datas, bss, noinit */
|
|
extern char _image_ram_start[];
|
|
extern char _image_ram_end[];
|
|
|
|
extern char _image_text_start[];
|
|
extern char _image_text_end[];
|
|
|
|
extern char _image_rodata_start[];
|
|
extern char _image_rodata_end[];
|
|
|
|
extern char _vector_start[];
|
|
extern char _vector_end[];
|
|
|
|
/* end address of image, used by newlib for the heap */
|
|
extern char _end[];
|
|
|
|
#ifdef CONFIG_CCM_BASE_ADDRESS
|
|
extern char __ccm_data_rom_start[];
|
|
extern char __ccm_start[];
|
|
extern char __ccm_data_start[];
|
|
extern char __ccm_data_end[];
|
|
extern char __ccm_bss_start[];
|
|
extern char __ccm_bss_end[];
|
|
extern char __ccm_noinit_start[];
|
|
extern char __ccm_noinit_end[];
|
|
extern char __ccm_end[];
|
|
#endif /* CONFIG_CCM_BASE_ADDRESS */
|
|
|
|
|
|
#endif /* ! _ASMLANGUAGE */
|
|
|
|
#endif /* _LINKERDEFS_H */
|