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zephyr/include/linker/linker-defs.h
Ioannis Glaropoulos db3f6aab02 arch: arm: add option to define an NSC region 
This commit adds K-config options that allow the user to
signify an ARM Secure Firmware that contains Secure Entry
functions and to define the starting address of the linker
section that will contain the Secure Entry functions. It
also instructs the linker to append the NSC section if
instructed so by the user.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
2018-08-13 18:58:11 -07:00

278 lines
7.7 KiB
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/*
* 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 = .; \
/*
* link in shell initialization objects for all modules that use shell and
* their shell commands are automatically initialized by the kernel.
*/
#ifdef CONFIG_APPLICATION_MEMORY
#ifndef NUM_KERNEL_OBJECT_FILES
#error "Expected NUM_KERNEL_OBJECT_FILES to be defined"
#elif NUM_KERNEL_OBJECT_FILES > 32
#error "Max supported kernel objects is 32."
/* 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)
#define APP_SMEM_SECTION() KEEP(*(SORT(data_smem_[_a-zA-Z0-9]*)))
#else
#define KERNEL_INPUT_SECTION(sect) *(sect)
#define APP_INPUT_SECTION(sect) *(sect)
#define APP_SMEM_SECTION() KEEP(*(SORT(data_smem_[_a-zA-Z0-9]*)))
#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>
/*
* The following are externs symbols from the linker. This enables
* the dynamic k_mem_domain and k_mem_partition creation and alignment
* to the section produced in the linker.
*/
extern char _app_smem_start[];
extern char _app_smem_end[];
extern char _app_smem_size[];
extern char _app_smem_rom_start[];
#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 */
/* Used by the Security Attribution Unit to configure the
* Non-Secure Callable region.
*/
#ifdef CONFIG_ARM_FIRMWARE_HAS_SECURE_ENTRY_FUNCS
extern char __sg_start[];
extern char __sg_end[];
extern char __sg_size[];
#endif /* CONFIG_ARM_FIRMWARE_HAS_SECURE_ENTRY_FUNCS */
#endif /* ! _ASMLANGUAGE */
#endif /* _LINKERDEFS_H */
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