nuttx/boards/arm/imxrt/imxrt1064-evk/scripts/flash-ocram.ld

/****************************************************************************
 * boards/arm/imxrt/imxrt1064-evk/scripts/flash-ocram.ld
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

/* Specify the memory areas */

/* The imxrt1064-evk has 8MiB of QSPI FLASH beginning at address,
 * 0x0060:0000, Upto 512Kb of DTCM RAM beginning at 0x2000:0000, and 1MiB OCRAM
 * beginning at 0x2020:0000.  Neither DTCM or SDRAM are used in this
 * configuration.
 *
 * The default flexram setting on the iMXRT 1064 is
 * 256Kib to OCRRAM, 128Kib ITCM and 128Kib DTCM.
 * This can be changed by using a dcd by minipulating
 * IOMUX GPR16 and GPR17.
 * The configuartion we will use is 384Kib to OCRRAM, 0Kib ITCM and
 * 128Kib DTCM.
 *
 * This is the OCRAM inker script.
 * The NXP ROM bootloader will move the FLASH image to OCRAM.
 * We must reserve 32K for the bootloader' OCRAM usage from  the OCRAM Size
 * and an additinal 8K for the ivt_s which is IVT_SIZE(8K) This 40K can be
 * reused once the application is running.
 *
 *      0x2020:A000 to 0x202d:ffff - The application Image's vector table
 *      0x2020:8000 to 0x2020:A000 - IVT
 *      0x2020:0000 to 0x2020:7fff - NXP ROM bootloader.
 *
 * We artificially split the FLASH to allow locating sections that we do not
 * want loaded inoto OCRAM. This is to save on OCRAM where the speen of the
 * code does not matter.
 *
 */

MEMORY
{
  flash    (rx)  : ORIGIN = 0x70000000, LENGTH = 3M
  flashxip (rx)  : ORIGIN = 0x70300000, LENGTH = 1M
  /*                     Vectors @ boot+ivt   OCRAM2   Flex RAM     Boot  IVT */
  sram     (rwx) : ORIGIN = 0x2020A000, LENGTH = 512K + 256K + 128K - (32K + 8K)
  itcm     (rwx) : ORIGIN = 0x00000000, LENGTH = 0K
  dtcm     (rwx) : ORIGIN = 0x20000000, LENGTH = 128K
}

OUTPUT_ARCH(arm)
EXTERN(_vectors)
EXTERN(g_flash_config)
EXTERN(g_image_vector_table)
EXTERN(g_boot_data)
EXTERN(g_dcd_data)

ENTRY(_stext)

SECTIONS
{
    /* Image Vector Table and Boot Data for booting from external flash */

    .boot_hdr : ALIGN(4)
    {
        FILL(0xff)
        __boot_hdr_start__ = ABSOLUTE(.) ;
        KEEP(*(.boot_hdr.conf))
        . = 0x1000 ;
        KEEP(*(.boot_hdr.ivt))
        . = 0x1020 ;
        KEEP(*(.boot_hdr.boot_data))
        . = 0x1030 ;
        KEEP(*(.boot_hdr.dcd_data))
        __boot_hdr_end__ = ABSOLUTE(.) ;
        . = 0x2000 ;
    } > flash

	/* Catch all the section we want not in OCRAM so that the *(.text .text.*) in flash does not */

    .flashxip : ALIGN(4)
	{
		FILL(0xff)

		/* Order matters */

		imxrt_start.o(.text)
		imxrt_boot.o(.text)

		*(.slow_memory)
		*(.rodata .rodata.*)
		KEEP(*(__param*))
		*(.fixup)
		*(.gnu.warning)
		*(.gnu.linkonce.t.*)
		*(.glue_7)
		*(.glue_7t)
		*(.got)
		*(.gcc_except_table)
		*(.gnu.linkonce.r.*)

    } > flashxip

    .text :
    {
        _stext = ABSOLUTE(.);
        *(.vectors)
        *(.text .text.*)
        _etext = ABSOLUTE(.);
    } > sram AT > flash

    .init_section :
    {
        _sinit = ABSOLUTE(.);
        *(.init_array .init_array.*)
        _einit = ABSOLUTE(.);
    } > flash

    .ARM.extab :
    {
        *(.ARM.extab*)
    } > sram AT > flash

    .ARM.exidx :
    {
        __exidx_start = ABSOLUTE(.);
        *(.ARM.exidx*)
        __exidx_end = ABSOLUTE(.);
    } > sram AT > flash

    _eronly = ABSOLUTE(.);

    .data :
    {
        _sdata = ABSOLUTE(.);
        *(.data .data.*)
        *(.gnu.linkonce.d.*)
        CONSTRUCTORS
        . = ALIGN(4);
        _edata = ABSOLUTE(.);
    } > sram AT > flash

    .ramfunc ALIGN(4):
    {
        _sramfuncs = ABSOLUTE(.);
        *(.ramfunc  .ramfunc.*)
        _eramfuncs = ABSOLUTE(.);
    } > sram AT > flash

    _framfuncs = LOADADDR(.ramfunc);

    .bss :
    {
        _sbss = ABSOLUTE(.);
        *(.bss .bss.*)
        *(.gnu.linkonce.b.*)
        *(COMMON)
        . = ALIGN(4);
        _ebss = ABSOLUTE(.);
    } > sram

    /* Stabs debugging sections. */

    .stab 0 : { *(.stab) }
    .stabstr 0 : { *(.stabstr) }
    .stab.excl 0 : { *(.stab.excl) }
    .stab.exclstr 0 : { *(.stab.exclstr) }
    .stab.index 0 : { *(.stab.index) }
    .stab.indexstr 0 : { *(.stab.indexstr) }
    .comment 0 : { *(.comment) }
    .debug_abbrev 0 : { *(.debug_abbrev) }
    .debug_info 0 : { *(.debug_info) }
    .debug_line 0 : { *(.debug_line) }
    .debug_pubnames 0 : { *(.debug_pubnames) }
    .debug_aranges 0 : { *(.debug_aranges) }
}