kopia lustrzana https://github.com/micropython/micropython
280 wiersze
8.0 KiB
Plaintext
280 wiersze
8.0 KiB
Plaintext
/*
|
|
** ###################################################################
|
|
** Linker script inspired by NXP linker script for MIMXRT10xx
|
|
**
|
|
** Copyright for original linker script:
|
|
** Copyright 2016 Freescale Semiconductor, Inc.
|
|
** Copyright 2016-2018 NXP
|
|
** SPDX-License-Identifier: BSD-3-Clause
|
|
**
|
|
** http: www.nxp.com
|
|
** mail: support@nxp.com
|
|
**
|
|
** Integrated ideas from CircuitPython:
|
|
** SPDX-License-Identifier: The MIT License (MIT)
|
|
** SPDX-FileCopyrightText: Copyright (c) 2020 Scott Shawcroft (tannewt)
|
|
**
|
|
** Copyright (c) 2021 Philipp Ebensberger
|
|
**
|
|
** ###################################################################
|
|
*/
|
|
|
|
/* Entry Point */
|
|
ENTRY(Reset_Handler)
|
|
|
|
HEAP_SIZE = DEFINED(__heap_size__) ? __heap_size__ : 0x0400;
|
|
STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0400;
|
|
|
|
/* Reserved Area
|
|
* Users can create a reserved area at the end of the flash memory via
|
|
* 'reserved_size' variable. The size of the reserved area should be a multiple
|
|
* of the sector size of the flash memory!
|
|
*/
|
|
reserved_size = DEFINED(reserved_size) ? reserved_size : 0k;
|
|
|
|
/* Specify the memory areas */
|
|
MEMORY
|
|
{
|
|
m_flash_config (RX) : ORIGIN = flash_config_start, LENGTH = flash_config_size
|
|
m_ivt (RX) : ORIGIN = ivt_start, LENGTH = ivt_size
|
|
m_interrupts (RX) : ORIGIN = interrupts_start, LENGTH = interrupts_size
|
|
m_text (RX) : ORIGIN = text_start, LENGTH = text_size
|
|
m_vfs (RX) : ORIGIN = vfs_start, LENGTH = vfs_size
|
|
/* Teensy uses the last bit of flash for recovery. */
|
|
m_reserved (RX) : ORIGIN = (vfs_start + vfs_size), LENGTH = reserved_size
|
|
m_itcm (RX) : ORIGIN = itcm_start, LENGTH = itcm_size
|
|
m_dtcm (RW) : ORIGIN = dtcm_start, LENGTH = dtcm_size
|
|
m_ocrm (RW) : ORIGIN = ocrm_start, LENGTH = ocrm_size
|
|
|
|
#if MICROPY_HW_SDRAM_AVAIL
|
|
m_sdram (RX) : ORIGIN = sdram_start, LENGTH = sdram_size
|
|
#endif
|
|
}
|
|
|
|
/* Define output sections */
|
|
SECTIONS
|
|
{
|
|
__flash_start = flash_start;
|
|
#if MICROPY_HW_SDRAM_AVAIL
|
|
__sdram_start = sdram_start;
|
|
#endif
|
|
__vfs_start = ORIGIN(m_vfs);
|
|
__vfs_end = __vfs_start + LENGTH(m_vfs);
|
|
|
|
.flash_config :
|
|
{
|
|
. = ALIGN(4);
|
|
__FLASH_BASE = .;
|
|
KEEP(* (.boot_hdr.conf)) /* flash config section */
|
|
. = ALIGN(4);
|
|
} > m_flash_config
|
|
|
|
ivt_begin = ORIGIN(m_flash_config) + LENGTH(m_flash_config);
|
|
|
|
.ivt : AT(ivt_begin)
|
|
{
|
|
. = ALIGN(4);
|
|
KEEP(* (.boot_hdr.ivt)) /* ivt section */
|
|
KEEP(* (.boot_hdr.boot_data)) /* boot section */
|
|
KEEP(* (.boot_hdr.dcd_data)) /* dcd section */
|
|
. = ALIGN(4);
|
|
} > m_ivt
|
|
|
|
/* The startup code goes first into internal RAM */
|
|
.interrupts :
|
|
{
|
|
__Vectors = .;
|
|
__vector_table = .;
|
|
. = ALIGN(4);
|
|
KEEP(*(.isr_vector)) /* Startup code */
|
|
. = ALIGN(4);
|
|
} > m_interrupts
|
|
|
|
__VECTOR_RAM = __Vectors;
|
|
__RAM_VECTOR_TABLE_SIZE_BYTES = 0x0;
|
|
|
|
/* The program code and other data goes into internal RAM */
|
|
.text :
|
|
{
|
|
. = ALIGN(4);
|
|
*(EXCLUDE_FILE(*fsl_flexspi.o *gc.o *vm.o *parse*.o *runtime*.o *map.o *mpirq.o ) .text*) /* .text* sections (code) */
|
|
*(.rodata) /* .rodata sections (constants, strings, etc.) */
|
|
*(.rodata*) /* .rodata* sections (constants, strings, etc.) */
|
|
*(.glue_7) /* glue arm to thumb code */
|
|
*(.glue_7t) /* glue thumb to arm code */
|
|
*(.eh_frame)
|
|
KEEP (*(.init))
|
|
KEEP (*(.fini))
|
|
. = ALIGN(4);
|
|
} > m_text
|
|
|
|
.ARM.extab :
|
|
{
|
|
*(.ARM.extab* .gnu.linkonce.armextab.*)
|
|
} > m_text
|
|
|
|
.ARM :
|
|
{
|
|
__exidx_start = .;
|
|
*(.ARM.exidx*)
|
|
__exidx_end = .;
|
|
} > m_text
|
|
|
|
.ctors :
|
|
{
|
|
__CTOR_LIST__ = .;
|
|
/* gcc uses crtbegin.o to find the start of
|
|
the constructors, so we make sure it is
|
|
first. Because this is a wildcard, it
|
|
doesn't matter if the user does not
|
|
actually link against crtbegin.o; the
|
|
linker won't look for a file to match a
|
|
wildcard. The wildcard also means that it
|
|
doesn't matter which directory crtbegin.o
|
|
is in. */
|
|
KEEP (*crtbegin.o(.ctors))
|
|
KEEP (*crtbegin?.o(.ctors))
|
|
/* We don't want to include the .ctor section from
|
|
from the crtend.o file until after the sorted ctors.
|
|
The .ctor section from the crtend file contains the
|
|
end of ctors marker and it must be last */
|
|
KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors))
|
|
KEEP (*(SORT(.ctors.*)))
|
|
KEEP (*(.ctors))
|
|
__CTOR_END__ = .;
|
|
} > m_text
|
|
|
|
.dtors :
|
|
{
|
|
__DTOR_LIST__ = .;
|
|
KEEP (*crtbegin.o(.dtors))
|
|
KEEP (*crtbegin?.o(.dtors))
|
|
KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors))
|
|
KEEP (*(SORT(.dtors.*)))
|
|
KEEP (*(.dtors))
|
|
__DTOR_END__ = .;
|
|
} > m_text
|
|
|
|
.preinit_array :
|
|
{
|
|
PROVIDE_HIDDEN (__preinit_array_start = .);
|
|
KEEP (*(.preinit_array*))
|
|
PROVIDE_HIDDEN (__preinit_array_end = .);
|
|
} > m_text
|
|
|
|
.init_array :
|
|
{
|
|
PROVIDE_HIDDEN (__init_array_start = .);
|
|
KEEP (*(SORT(.init_array.*)))
|
|
KEEP (*(.init_array*))
|
|
PROVIDE_HIDDEN (__init_array_end = .);
|
|
} > m_text
|
|
|
|
.fini_array :
|
|
{
|
|
PROVIDE_HIDDEN (__fini_array_start = .);
|
|
KEEP (*(SORT(.fini_array.*)))
|
|
KEEP (*(.fini_array*))
|
|
PROVIDE_HIDDEN (__fini_array_end = .);
|
|
} > m_text
|
|
|
|
__etext = .; /* define a global symbol at end of code */
|
|
__DATA_ROM = .; /* Symbol is used by startup for data initialization */
|
|
|
|
.data : AT(__DATA_ROM)
|
|
{
|
|
. = ALIGN(4);
|
|
__DATA_RAM = .;
|
|
__data_start__ = .; /* create a global symbol at data start */
|
|
__data_section_table = .;
|
|
*(m_usb_dma_init_data)
|
|
*(.data) /* .data sections */
|
|
*(.data*) /* .data* sections */
|
|
KEEP(*(.jcr*))
|
|
. = ALIGN(4);
|
|
__data_end__ = .; /* define a global symbol at data end */
|
|
__data_section_table_end = .;
|
|
} > m_dtcm
|
|
|
|
__RAM_FUNCTIONS_ROM = __DATA_ROM + (__data_end__ - __data_start__);
|
|
.ram_functions : AT(__RAM_FUNCTIONS_ROM)
|
|
{
|
|
. = ALIGN(4);
|
|
__ram_function_start__ = .;
|
|
*(.ram_functions*)
|
|
/* remaining .text and .rodata; i.e. stuff we exclude above because we want it in RAM */
|
|
*(.text*)
|
|
. = ALIGN(4);
|
|
__ram_function_end__ = .;
|
|
} > m_itcm
|
|
|
|
__NDATA_ROM = __RAM_FUNCTIONS_ROM + (__ram_function_end__ - __ram_function_start__);
|
|
.ncache.init : AT(__NDATA_ROM)
|
|
{
|
|
__noncachedata_start__ = .; /* create a global symbol at ncache data start */
|
|
*(NonCacheable.init)
|
|
. = ALIGN(4);
|
|
__noncachedata_init_end__ = .; /* create a global symbol at initialized ncache data end */
|
|
} > m_dtcm
|
|
. = __noncachedata_init_end__;
|
|
.ncache :
|
|
{
|
|
*(NonCacheable)
|
|
. = ALIGN(4);
|
|
__noncachedata_end__ = .; /* define a global symbol at ncache data end */
|
|
} > m_dtcm
|
|
|
|
__DATA_END = __NDATA_ROM + (__noncachedata_end__ - __noncachedata_start__);
|
|
__FLASH_DATA_END = __NDATA_ROM + (__noncachedata_init_end__ - __noncachedata_start__);
|
|
text_end = ORIGIN(m_text) + LENGTH(m_text);
|
|
ASSERT(__DATA_END <= text_end, "region m_text overflowed with text and data")
|
|
|
|
/* Uninitialized data section */
|
|
.bss :
|
|
{
|
|
/* This is used by the startup in order to initialize the .bss section */
|
|
. = ALIGN(4);
|
|
__START_BSS = .;
|
|
__bss_start__ = .;
|
|
__bss_section_table = .;
|
|
*(m_usb_dma_noninit_data)
|
|
*(.bss)
|
|
*(.bss*)
|
|
*(COMMON)
|
|
. = ALIGN(4);
|
|
__bss_end__ = .;
|
|
__bss_section_table_end = .;
|
|
__END_BSS = .;
|
|
} > m_dtcm
|
|
|
|
.heap :
|
|
{
|
|
. = ALIGN(8);
|
|
__end__ = .;
|
|
PROVIDE(end = .);
|
|
__HeapBase = .;
|
|
. += HEAP_SIZE;
|
|
__HeapLimit = .;
|
|
__heap_limit = .; /* Add for _sbrk */
|
|
} > m_dtcm
|
|
|
|
.stack :
|
|
{
|
|
. = ALIGN(8);
|
|
. += STACK_SIZE;
|
|
} > m_dtcm
|
|
|
|
_flashimagelen = __FLASH_DATA_END - flash_start;
|
|
|
|
/* Initializes stack on the end of block */
|
|
__StackTop = ORIGIN(m_dtcm) + LENGTH(m_dtcm);
|
|
__StackLimit = __StackTop - STACK_SIZE;
|
|
_vStackTop = __StackTop;
|
|
PROVIDE(__stack = __StackTop);
|
|
|
|
.ARM.attributes 0 : { *(.ARM.attributes) }
|
|
|
|
ASSERT(__StackLimit >= __HeapLimit, "region m_dtcm overflowed with stack and heap")
|
|
}
|
|
|