djsundog/circuitpython
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
913f9ad5ad
circuitpython/ports/mimxrt/boards/common.ld
robert-hh 5e990cc27f mimxrt: Add support for MIMXRT1176 MCUs, and MIMXRT1170_EVK board. 
The RT1176 has two cores, but the actual firmware supports only the CM7.
There are currently no good plans on how to use the CM4.

The actual MIMXRT1170_EVK board is on par with the existing MIMXRT boards,
with the following extensions:
- Use 64 MB RAM for the heap.
- Support both LAN interfaces as LAN(0) and LAN(1), with LAN(1)
  being the 1GB interface.

The dual LAN port interface can eventually be adapted as well for the
RT1062 MCU.

This work was done in collaboration with @alphaFred.
2022-11-17 14:11:50 +11:00

279 lines
8.0 KiB
Plaintext
Raw Blame History

/*
** ###################################################################
** 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 :
{
__VECTOR_TABLE = .;
. = ALIGN(4);
KEEP(*(.isr_vector)) /* Startup code */
. = ALIGN(4);
} > m_interrupts
__VECTOR_RAM = __VECTOR_TABLE;
__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")
}
Reference in New Issue View Git Blame Copy Permalink