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159 lines
4.0 KiB
159 lines
4.0 KiB
/* |
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* Copyright (c) 2013-2014, Wind River Systems, Inc. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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/* |
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* DESCRIPTION |
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* Platform independent, commonly used macros and defines related to linker |
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* script. |
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* |
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* This file may be included by: |
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* - Linker script files: for linker section declarations |
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* - C files: for external declaration of address or size of linker section |
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* - Assembly files: for external declaration of address or size of linker |
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* section |
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*/ |
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#ifndef _LINKERDEFS_H |
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#define _LINKERDEFS_H |
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#include <toolchain.h> |
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#include <linker/sections.h> |
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/* include platform dependent linker-defs */ |
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#ifdef CONFIG_X86 |
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/* Nothing yet to include */ |
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#elif defined(CONFIG_ARM) |
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/* Nothing yet to include */ |
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#elif defined(CONFIG_ARC) |
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/* Nothing yet to include */ |
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#elif defined(CONFIG_NIOS2) |
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/* Nothing yet to include */ |
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#elif defined(CONFIG_RISCV32) |
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/* Nothing yet to include */ |
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#elif defined(CONFIG_XTENSA) |
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/* Nothing yet to include */ |
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#else |
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#error Arch not supported. |
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#endif |
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#ifdef _LINKER |
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/* |
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* Space for storing per device busy bitmap. Since we do not know beforehand |
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* the number of devices, we go through the below mechanism to allocate the |
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* required space. |
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*/ |
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#ifdef CONFIG_DEVICE_POWER_MANAGEMENT |
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#define DEVICE_COUNT \ |
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((__device_init_end - __device_init_start) / _DEVICE_STRUCT_SIZE) |
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#define DEV_BUSY_SZ (((DEVICE_COUNT + 31) / 32) * 4) |
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#define DEVICE_BUSY_BITFIELD() \ |
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FILL(0x00) ; \ |
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__device_busy_start = .; \ |
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. = . + DEV_BUSY_SZ; \ |
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__device_busy_end = .; |
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#else |
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#define DEVICE_BUSY_BITFIELD() |
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#endif |
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/* |
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* generate a symbol to mark the start of the device initialization objects for |
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* the specified level, then link all of those objects (sorted by priority); |
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* ensure the objects aren't discarded if there is no direct reference to them |
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*/ |
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#define DEVICE_INIT_LEVEL(level) \ |
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__device_##level##_start = .; \ |
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KEEP(*(SORT(.init_##level[0-9]))); \ |
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KEEP(*(SORT(.init_##level[1-9][0-9]))); \ |
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/* |
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* link in device initialization objects for all devices that are automatically |
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* initialized by the kernel; the objects are sorted in the order they will be |
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* initialized (i.e. ordered by level, sorted by priority within a level) |
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*/ |
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#define DEVICE_INIT_SECTIONS() \ |
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__device_init_start = .; \ |
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DEVICE_INIT_LEVEL(PRE_KERNEL_1) \ |
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DEVICE_INIT_LEVEL(PRE_KERNEL_2) \ |
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DEVICE_INIT_LEVEL(POST_KERNEL) \ |
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DEVICE_INIT_LEVEL(APPLICATION) \ |
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__device_init_end = .; \ |
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DEVICE_BUSY_BITFIELD() \ |
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/* define a section for undefined device initialization levels */ |
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#define DEVICE_INIT_UNDEFINED_SECTION() \ |
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KEEP(*(SORT(.init_[_A-Z0-9]*))) \ |
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/* |
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* link in shell initialization objects for all modules that use shell and |
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* their shell commands are automatically initialized by the kernel. |
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*/ |
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#define SHELL_INIT_SECTIONS() \ |
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__shell_cmd_start = .; \ |
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KEEP(*(".shell_*")); \ |
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__shell_cmd_end = .; |
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#ifdef CONFIG_X86 /* LINKER FILES: defines used by linker script */ |
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/* Should be moved to linker-common-defs.h */ |
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#if defined(CONFIG_XIP) |
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#define ROMABLE_REGION ROM |
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#else |
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#define ROMABLE_REGION RAM |
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#endif |
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#endif |
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/* |
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* If image is loaded via kexec Linux system call, then program |
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* headers need to be page aligned. |
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* This can be done by section page aligning. |
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*/ |
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#ifdef CONFIG_BOOTLOADER_KEXEC |
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#define KEXEC_PGALIGN_PAD(x) . = ALIGN(x); |
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#else |
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#define KEXEC_PGALIGN_PAD(x) |
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#endif |
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#elif defined(_ASMLANGUAGE) |
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/* Assembly FILES: declaration defined by the linker script */ |
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GDATA(__bss_start) |
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GDATA(__bss_num_words) |
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#ifdef CONFIG_XIP |
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GDATA(__data_rom_start) |
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GDATA(__data_ram_start) |
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GDATA(__data_num_words) |
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#endif |
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#else /* ! _ASMLANGUAGE */ |
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#include <zephyr/types.h> |
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extern char __bss_start[]; |
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extern char __bss_end[]; |
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#ifdef CONFIG_XIP |
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extern char __data_rom_start[]; |
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extern char __data_ram_start[]; |
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extern char __data_ram_end[]; |
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#endif |
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extern char _image_rom_start[]; |
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extern char _image_rom_end[]; |
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extern char _image_ram_start[]; |
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extern char _image_ram_end[]; |
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extern char _image_text_start[]; |
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extern char _image_text_end[]; |
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/* end address of image. */ |
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extern char _end[]; |
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#endif /* ! _ASMLANGUAGE */ |
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#endif /* _LINKERDEFS_H */
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