esp8266/bootloaders/eboot/eboot.ld

/* This linker script generated from xt-genldscripts.tpp for LSP . */
/* Linker Script for ld -N */
MEMORY
{
  dport0_0_seg :                      	org = 0x3FF00000, len = 0x10
  dram0_0_seg :                       	org = 0x3FFE8000, len = 0x14000
  iram1_0_seg :                       	org = 0x4010f000, len = 0x1000
  irom0_0_seg :                       	org = 0x40240000, len = 0x32000
}

PHDRS
{
  dport0_0_phdr PT_LOAD;
  dram0_0_phdr PT_LOAD;
  dram0_0_bss_phdr PT_LOAD;
  iram1_0_phdr PT_LOAD;
  irom0_0_phdr PT_LOAD;
}


/*  Default entry point:  */
ENTRY(main)
PROVIDE(_memmap_vecbase_reset = 0x40000000);
/* Various memory-map dependent cache attribute settings: */
_memmap_cacheattr_wb_base = 0x00000110;
_memmap_cacheattr_wt_base = 0x00000110;
_memmap_cacheattr_bp_base = 0x00000220;
_memmap_cacheattr_unused_mask = 0xFFFFF00F;
_memmap_cacheattr_wb_trapnull = 0x2222211F;
_memmap_cacheattr_wba_trapnull = 0x2222211F;
_memmap_cacheattr_wbna_trapnull = 0x2222211F;
_memmap_cacheattr_wt_trapnull = 0x2222211F;
_memmap_cacheattr_bp_trapnull = 0x2222222F;
_memmap_cacheattr_wb_strict = 0xFFFFF11F;
_memmap_cacheattr_wt_strict = 0xFFFFF11F;
_memmap_cacheattr_bp_strict = 0xFFFFF22F;
_memmap_cacheattr_wb_allvalid = 0x22222112;
_memmap_cacheattr_wt_allvalid = 0x22222112;
_memmap_cacheattr_bp_allvalid = 0x22222222;
PROVIDE(_memmap_cacheattr_reset = _memmap_cacheattr_wb_trapnull);

SECTIONS
{

  .dport0.rodata : ALIGN(4)
  {
    _dport0_rodata_start = ABSOLUTE(.);
    *(.dport0.rodata)
    *(.dport.rodata)
    _dport0_rodata_end = ABSOLUTE(.);
  } >dport0_0_seg :dport0_0_phdr

  .dport0.literal : ALIGN(4)
  {
    _dport0_literal_start = ABSOLUTE(.);
    *(.dport0.literal)
    *(.dport.literal)
    _dport0_literal_end = ABSOLUTE(.);
  } >dport0_0_seg :dport0_0_phdr

  .dport0.data : ALIGN(4)
  {
    _dport0_data_start = ABSOLUTE(.);
    *(.dport0.data)
    *(.dport.data)
    _dport0_data_end = ABSOLUTE(.);
  } >dport0_0_seg :dport0_0_phdr

  .data : ALIGN(4)
  {
    *(COMMON)  /* Global vars */
    . = ALIGN(4);
    _heap_start = ABSOLUTE(.);
/*    _stack_sentry = ALIGN(0x8); */
  } >dram0_0_seg :dram0_0_bss_phdr
/* __stack = 0x3ffc8000; */

  .text : ALIGN(4)
  {
    _stext = .;
    _text_start = ABSOLUTE(.);
    *(.entry.text)
    *(.init.literal)
    *(.init)
    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
    *(.fini.literal)
    *(.fini)
    *(.gnu.version)
    _text_end = ABSOLUTE(.);
    _etext = .;
    . = ALIGN (8);
    _data_start = ABSOLUTE(.);
    *(.data)
    *(.data.*)
    *(.gnu.linkonce.d.*)
    *(.data1)
    *(.sdata)
    *(.sdata.*)
    *(.gnu.linkonce.s.*)
    *(.sdata2)
    *(.sdata2.*)
    *(.gnu.linkonce.s2.*)
    *(.jcr)
    _data_end = ABSOLUTE(.);
  . = ALIGN (8);
    _rodata_start = ABSOLUTE(.);
    *(.rodata)
    *(.rodata.*)
    *(.gnu.linkonce.r.*)
    *(.rodata1)
    __XT_EXCEPTION_TABLE__ = ABSOLUTE(.);
    *(.xt_except_table)
    *(.gcc_except_table)
    *(.gnu.linkonce.e.*)
    *(.gnu.version_r)
    *(.eh_frame)
    /*  C++ constructor and destructor tables, properly ordered:  */
    KEEP (*crtbegin.o(.ctors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
    KEEP (*crtbegin.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
    /*  C++ exception handlers table:  */
    __XT_EXCEPTION_DESCS__ = ABSOLUTE(.);
    *(.xt_except_desc)
    *(.gnu.linkonce.h.*)
    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
    *(.xt_except_desc_end)
    *(.dynamic)
    *(.gnu.version_d)
    . = ALIGN(4);   /* this table MUST be 4-byte aligned */
    _bss_table_start = ABSOLUTE(.);
    LONG(_bss_start)
    LONG(_bss_end)
    _bss_table_end = ABSOLUTE(.);
    _rodata_end = ABSOLUTE(.);

    . = ALIGN (8);
    _bss_start = ABSOLUTE(.);
    *(.dynsbss)
    *(.sbss)
    *(.sbss.*)
    *(.gnu.linkonce.sb.*)
    *(.scommon)
    *(.sbss2)
    *(.sbss2.*)
    *(.gnu.linkonce.sb2.*)
    *(.dynbss)
    *(.bss)
    *(.bss.*)
    *(.gnu.linkonce.b.*)
    . = ALIGN (8);
    _bss_end = ABSOLUTE(.);
    _free_space = 4096 - 17 - (. - _stext);
/*
The boot loader checksum must be before the CRC, which is written by elf2bin.py.
This leaves 16 bytes after the checksum for the CRC placed at the end of the
4096-byte sector. */
    _cs_here = (ALIGN((. + 1), 16) == ALIGN(16)) ? (ALIGN(16) - 1) : (. + 0x0F);

/*
The filling (padding) and values for _crc_size and _crc_val are handled by
elf2bin.py. With this, we give values to the symbols without explicitly
assigning space. This avoids the linkers back *fill* operation that causes
trouble.

The CRC info is stored in last 8 bytes.    */
    _crc_size = _stext + 4096 - 8;
    _crc_val = _stext + 4096 - 4;
    ASSERT((4096 > (17 + (. - _stext))), "Error: No space for CS and CRC in bootloader sector.");
    ASSERT((_crc_size > _cs_here), "Error: CRC must be located after CS.");
  } >iram1_0_seg :iram1_0_phdr

  .lit4 : ALIGN(4)
  {
    _lit4_start = ABSOLUTE(.);
    *(*.lit4)
    *(.lit4.*)
    *(.gnu.linkonce.lit4.*)
    _lit4_end = ABSOLUTE(.);
  } >iram1_0_seg :iram1_0_phdr

  .irom0.text : ALIGN(4)
  {
    _irom0_text_start = ABSOLUTE(.);
    *(.irom0.literal .irom.literal .irom.text.literal .irom0.text .irom.text)
    _irom0_text_end = ABSOLUTE(.);
  } >irom0_0_seg :irom0_0_phdr
}

/* get ROM code address */
INCLUDE "rom.ld"