/* Linker script for ARM M-profile Simulator
 *
 * Version: Sourcery G++ Lite 2010q1-188
 * Support: https://support.codesourcery.com/GNUToolchain/
 *
 * Copyright (c) 2007, 2008, 2009, 2010 CodeSourcery, Inc.
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions.  No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */
OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
ENTRY(__cy_reset)
SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)

/* Code sharing support */
INCLUDE cycodeshareexport.ld
INCLUDE cycodeshareimport.ld


MEMORY
{
	rom (rx) : ORIGIN = 0x0, LENGTH = 262144
	ram (rwx) : ORIGIN = 0x20000000 - (65536 / 2), LENGTH = 65536
}


CY_APPL_ORIGIN      = 0;
CY_FLASH_ROW_SIZE   = 256;
CY_ECC_ROW_SIZE     = 32;
CY_EE_IN_BTLDR      = 0x0;
CY_APPL_LOADABLE    = 0;
CY_EE_SIZE          = 2048;
CY_APPL_NUM         = 1;
CY_APPL_MAX         = 1;
CY_METADATA_SIZE    = 64;
CY_APPL_LOADABLE    = 0;
CY_CHECKSUM_EXCLUDE_SIZE = ALIGN(0, CY_FLASH_ROW_SIZE);


/* These force the linker to search for particular symbols from
 * the start of the link process and thus ensure the user's
 * overrides are picked up
 */
EXTERN(Reset)

/* Bring in interrupt routines & vector */
EXTERN(main)

/* Bring in the romvector */
EXTERN(RomVectors)

/* Bring in the ramvector */
EXTERN(CyRamVectors)

/* Bring in meta data */
EXTERN(cy_meta_loader cy_bootloader cy_meta_loadable cy_meta_bootloader)
EXTERN(cy_meta_custnvl cy_meta_wolatch cy_meta_flashprotect cy_metadata)

/* Provide fall-back values */
PROVIDE(__cy_heap_start = _end);
PROVIDE(__cy_region_num = (__cy_regions_end - __cy_regions) / 16);
PROVIDE(__cy_stack = ORIGIN(ram) + LENGTH(ram));
PROVIDE(__cy_heap_end = __cy_stack - 0x0800);


SECTIONS
{
	/* The bootloader location */
	.cybootloader 0x0 : { KEEP(*(.cybootloader)) } >rom

	/* Calculate where the loadables should start */
	appl1_start   = CY_APPL_ORIGIN ? CY_APPL_ORIGIN : ALIGN(CY_FLASH_ROW_SIZE);
	appl2_start   = appl1_start + ALIGN((LENGTH(rom) - appl1_start - 2 * CY_FLASH_ROW_SIZE) / 2, CY_FLASH_ROW_SIZE);
	appl_start    = (CY_APPL_NUM == 1) ? appl1_start : appl2_start;
	ecc_offset    = (appl_start / CY_FLASH_ROW_SIZE) * CY_ECC_ROW_SIZE;
	ee_offset     = (CY_APPL_LOADABLE && !CY_EE_IN_BTLDR) ? ((CY_EE_SIZE / CY_APPL_MAX) * (CY_APPL_NUM - 1)) : 0;
	ee_size       = (CY_APPL_LOADABLE && !CY_EE_IN_BTLDR) ? (CY_EE_SIZE / CY_APPL_MAX) : CY_EE_SIZE;
	PROVIDE(CY_ECC_OFFSET = ecc_offset);

	.text appl_start :
	{
 		CREATE_OBJECT_SYMBOLS
 		PROVIDE(__cy_interrupt_vector = RomVectors);

        KEEP(*(.romvectors))

 		/* Make sure we pulled in an interrupt vector.  */
 		ASSERT (. != __cy_interrupt_vector, "No interrupt vector");

 		ASSERT (CY_APPL_ORIGIN ? (SIZEOF(.cybootloader) <= CY_APPL_ORIGIN) : 1, "Wrong image location");

 		PROVIDE(__cy_reset = Reset);
 		*(.text.Reset)
 		/* Make sure we pulled in some reset code.  */
 		ASSERT (. != __cy_reset, "No reset code");

		/* Place DMA initialization before text to ensure it gets placed in first 64K of flash */
 		*(.dma_init)
 		ASSERT(appl_start + . <= 0x10000 || !0, "DMA Init must be within the first 64k of flash");

 		*(.text .text.* .gnu.linkonce.t.*)
 		*(.plt)
 		*(.gnu.warning)
 		*(.glue_7t) *(.glue_7) *(.vfp11_veneer)

 		KEEP(*(.bootloader)) /* necessary for bootloader's, but doesn't impact non-bootloaders */

 		*(.ARM.extab* .gnu.linkonce.armextab.*)
 		*(.gcc_except_table)
  } >rom


	.eh_frame_hdr : ALIGN (4)
	{
		KEEP (*(.eh_frame_hdr))
	} >rom


	.eh_frame : ALIGN (4)
	{
		KEEP (*(.eh_frame))
	} >rom


	/* .ARM.exidx is sorted, so has to go in its own output section.  */
	PROVIDE_HIDDEN (__exidx_start = .);
	.ARM.exidx :
	{
		*(.ARM.exidx* .gnu.linkonce.armexidx.*)
	} >rom
	__exidx_end = .;


	.rodata : ALIGN (4)
	{
		*(.rodata .rodata.* .gnu.linkonce.r.*)

		. = ALIGN(4);
		KEEP(*(.init))

		. = ALIGN(4);
		__preinit_array_start = .;
		KEEP (*(.preinit_array))
		__preinit_array_end = .;

		. = ALIGN(4);
		__init_array_start = .;
		KEEP (*(SORT(.init_array.*)))
		KEEP (*(.init_array))
		__init_array_end = .;

		. = ALIGN(4);
		KEEP(*(.fini))

		. = ALIGN(4);
		__fini_array_start = .;
		KEEP (*(.fini_array))
		KEEP (*(SORT(.fini_array.*)))
		__fini_array_end = .;

		. = ALIGN(0x4);
		KEEP (*crtbegin.o(.ctors))
		KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
		KEEP (*(SORT(.ctors.*)))
		KEEP (*crtend.o(.ctors))

		. = ALIGN(0x4);
		KEEP (*crtbegin.o(.dtors))
		KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
		KEEP (*(SORT(.dtors.*)))
		KEEP (*crtend.o(.dtors))

		. = ALIGN(4);
		__cy_regions = .;
		LONG (__cy_region_init_ram)
		LONG (__cy_region_start_data)
		LONG (__cy_region_init_size_ram)
		LONG (__cy_region_zero_size_ram)
		__cy_regions_end = .;

		. = ALIGN (8);
		_etext = .;
	} >rom


	/***************************************************************************
    * Checksum Exclude Section for non-bootloadable projects. See below.
    ***************************************************************************/
    .cy_checksum_exclude : { KEEP(*(.cy_checksum_exclude)) } >rom


	.ramvectors (NOLOAD) : ALIGN(8)
	{
	  __cy_region_start_ram = .;
	  KEEP(*(.ramvectors))
	}


	.noinit (NOLOAD) : ALIGN(8)
	{
	  KEEP(*(.noinit))
	}


	.data : ALIGN(8)
	{
	  __cy_region_start_data = .;

	  KEEP(*(.jcr))
	  *(.got.plt) *(.got)
	  *(.shdata)
	  *(.data .data.* .gnu.linkonce.d.*)
	  . = ALIGN (8);
	  *(.ram)
	  _edata = .;
	} >ram AT>rom


  	.bss : ALIGN(8)
  	{
  	  PROVIDE(__bss_start__ = .);
  	  *(.shbss)
  	  *(.bss .bss.* .gnu.linkonce.b.*)
  	  *(COMMON)
  	  . = ALIGN (8);
  	  *(.ram.b)
  	  _end = .;
  	  __end = .;
  	} >ram AT>rom


	PROVIDE(end = .);
  	PROVIDE(__bss_end__ = .);

	__cy_region_init_ram = LOADADDR (.data);
	__cy_region_init_size_ram = _edata - ADDR (.data);
	__cy_region_zero_size_ram = _end - _edata;

	/* The .stack and .heap sections don't contain any symbols.
	 * They are only used for linker to calculate RAM utilization.
	 */
	.heap (NOLOAD) :
	{
	  . = _end;
	  . += 0x80;
	  __cy_heap_limit = .;
	} >ram

	.stack (__cy_stack - 0x0800) (NOLOAD) :
	{
	  __cy_stack_limit = .;
	  . += 0x0800;
	} >ram

	/* Check if data + heap + stack exceeds RAM limit */
	ASSERT(__cy_stack_limit >= __cy_heap_limit, "region RAM overflowed with stack")


    /***************************************************************************
     * Checksum Exclude Section
     ***************************************************************************
     *
     * For the normal and bootloader projects this section is placed at any
     * place. For the Bootloadable applications, it is placed at the specific
     * address.
     *
     * Case # 1. Bootloadable application
     *
     *  _______________________________
     * | Metadata (BTLDBL)             |
     * |-------------------------------|
     * | Checksum Exclude (BTLDBL)     |
     * |-------------------------------|
     * |                               |
     * |                               |
     * |                               |
     * |-------------------------------|
     * |                               |
     * |                               |
     * |                               |
     * | BTLDBL                        |
     * |                               |
     * |                               |
     * |                               |
     * |-------------------------------|
     * |                               |
     * | BTLDR                         |
     * |_______________________________|
     *
     *
     *  Case # 2. Bootloadable application for Dual-Application Bootloader
     *
     *  _______________________________
     * | Metadata (BTLDBL # 1)         |
     * |-------------------------------|
     * | Metadata (BTLDBL # 2)         |
     * |-------------------------------|
     * | Checksum Exclude (BTLDBL # 2) |
     * |-------------------------------|
     * |                               |
     * |                               |
     * |                               |
     * |-------------------------------|
     * |                               |
     * | BTLDBL # 2                    |
     * |_______________________________|____BTLDBL # 2 Start address___
     * | Checksum Exclude (BTLDBL # 1) |
     * |-------------------------------|
     * |                               |
     * |                               |
     * |                               |
     * |-------------------------------|
     * |                               |
     * | BTLDBL # 1                    |
     * |                               |
     * |-------------------------------|
     * | BTLDR                         |
     * |_______________________________|
     */
    


    /* Bootloadable applications only: verify that size of the data in the section is within the specified limit. */
    cy_checksum_exclude_size = (CY_APPL_LOADABLE == 1) ? SIZEOF(.cy_checksum_exclude) : 0;
    ASSERT(cy_checksum_exclude_size <= CY_CHECKSUM_EXCLUDE_SIZE, "CY_BOOT: Section .cy_checksum_exclude size exceedes specified limit.")


	.cyloadermeta ((appl_start == 0) ? (LENGTH(rom) - CY_METADATA_SIZE) : 0xF0000000) :
	{
	  KEEP(*(.cyloadermeta))
	} :NONE

	.cyloadablemeta (LENGTH(rom) - CY_FLASH_ROW_SIZE * (CY_APPL_NUM - 1) - CY_METADATA_SIZE) :
	{
	  KEEP(*(.cyloadablemeta))
	} >rom


	.cyconfigecc (0x80000000 + ecc_offset) :
	{
		KEEP(*(.cyconfigecc))
	} :NONE

	.cycustnvl      0x90000000 : { KEEP(*(.cycustnvl)) } :NONE
	.cywolatch      0x90100000 : { KEEP(*(.cywolatch)) } :NONE

	.cyeeprom (0x90200000 + ee_offset) :
	{
		KEEP(*(.cyeeprom))
		ASSERT(. <= (0x90200000 + ee_offset + ee_size), ".cyeeprom data will not fit in EEPROM");
	} :NONE

	.cyflashprotect 0x90400000 : { KEEP(*(.cyflashprotect)) } :NONE
	.cymeta         0x90500000 : { KEEP(*(.cymeta)) } :NONE

	.stab 0 (NOLOAD) : { *(.stab) }
	.stabstr 0 (NOLOAD) : { *(.stabstr) }
	/* DWARF debug sections.
	 * Symbols in the DWARF debugging sections are relative to the beginning
	 * of the section so we begin them at 0.
	 */
	/* DWARF 1 */
	.debug          0 : { *(.debug) }
	.line           0 : { *(.line) }
	/* GNU DWARF 1 extensions */
	.debug_srcinfo  0 : { *(.debug_srcinfo) }
	.debug_sfnames  0 : { *(.debug_sfnames) }
	/* DWARF 1.1 and DWARF 2 */
	.debug_aranges  0 : { *(.debug_aranges) }
	.debug_pubnames 0 : { *(.debug_pubnames) }
	/* DWARF 2 */
	.debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
	.debug_abbrev   0 : { *(.debug_abbrev) }
	.debug_line     0 : { *(.debug_line) }
	.debug_frame    0 : { *(.debug_frame) }
	.debug_str      0 : { *(.debug_str) }
	.debug_loc      0 : { *(.debug_loc) }
	.debug_macinfo  0 : { *(.debug_macinfo) }
	/* DWARF 2.1 */
	.debug_ranges   0 : { *(.debug_ranges) }
	/* SGI/MIPS DWARF 2 extensions */
	.debug_weaknames 0 : { *(.debug_weaknames) }
	.debug_funcnames 0 : { *(.debug_funcnames) }
	.debug_typenames 0 : { *(.debug_typenames) }
	.debug_varnames  0 : { *(.debug_varnames) }

	.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }
	.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) }
	/DISCARD/ : { *(.note.GNU-stack) }
}

