/**************************************************************************** * configs/pcblogic-pic32mx/scripts/pcblogic-pic32mx.ld * * Copyright (C) 2011, 2017 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /* Memory Regions ***********************************************************/ MEMORY { /* The PIC32MX460F512L has 512Kb of program FLASH at physical address * 0x1d000000 but is always accessed at KSEG0 address 0x9d00:0000 */ kseg0_progmem (rx) : ORIGIN = 0x9d000000, LENGTH = 512K /* The PIC32MX460F512L has 12Kb of boot FLASH at physical address * 0x1fc00000. The initial reset vector is in KSEG1, but all other * accesses are in KSEG0. * * REGION PHYSICAL KSEG SIZE * DESCRIPTION START ADDR (BYTES) * ------------- ---------- ------ ---------------------- * Exceptions:* * Reset 0x1fc00000 KSEG1 512 512 * TLB Refill 0x1fc00200 KSEG1 256 768 * Cache Error 0x1fc00300 KSEG1 128 896 * Others 0x1fc00380 KSEG1 128 1024 (1Kb) * Interrupt 0x1fc00400 KSEG1 128 1152 * JTAG 0x1fc00480 KSEG1 16 1168 * Exceptions 0x1fc00490 KSEG0 8192-1168 8192 (4Kb) * Debug code 0x1fc02000 KSEG1 4096-16 12272 * DEVCFG3-0 0x1fc02ff0 KSEG1 16 12288 (12Kb) * * Exceptions assume: * * STATUS: BEV=0/1 and EXL=0 * CAUSE: IV=1 * JTAG: ProbEn=0 * And multi-vector support disabled */ kseg1_reset (rx) : ORIGIN = 0xbfc00000, LENGTH = 384 kseg1_genexcpt (rx) : ORIGIN = 0xbfc00180, LENGTH = 128 kseg1_ebexcpt (rx) : ORIGIN = 0xbfc00200, LENGTH = 128 kseg1_bevexcpt (rx) : ORIGIN = 0xbfc00380, LENGTH = 128 kseg1_intexcpt (rx) : ORIGIN = 0xbfc00400, LENGTH = 128 kseg1_dbgexcpt (rx) : ORIGIN = 0xbfc00480, LENGTH = 16 kseg0_bootmem (rx) : ORIGIN = 0x9fc00490, LENGTH = 8192-1168 kseg1_dbgcode (rx) : ORIGIN = 0xbfc02000, LENGTH = 4096-16 kseg1_devcfg (r) : ORIGIN = 0xbfc02ff0, LENGTH = 16 /* The PIC32MX460F512L has 32Kb of data memory at physical address * 0x00000000. Since the PIC32MX has no data cache, this memory is * always accessed through KSEG1. * * When used with MPLAB, we need to set aside 512 bytes of memory * for use by MPLAB. */ kseg1_datamem (w!x) : ORIGIN = 0xa0000200, LENGTH = 32K - 512 } OUTPUT_FORMAT("elf32-tradlittlemips") OUTPUT_ARCH(pic32mx) ENTRY(__start) SECTIONS { /* Boot FLASH sections */ .reset : { KEEP (*(.reset)) } > kseg1_reset /* Exception handlers. The following is assumed: * * STATUS: BEV=1 and EXL=0 * CAUSE: IV=1 * JTAG: ProbEn=0 * And multi-vector support disabled * * In that configuration, the vector locations become: * * Reset, Soft Reset bfc0:0000 * TLB Refill bfc0:0200 * Cache Error bfc0:0300 * All others bfc0:0380 * Interrupt bfc0:0400 * EJTAG Debug bfc0:0480 */ /* KSEG1 exception handler "trampolines" */ .gen_excpt : { KEEP (*(.gen_excpt)) } > kseg1_genexcpt .ebase_excpt : { KEEP (*(.ebase_excpt)) } > kseg1_ebexcpt .bev_excpt : { KEEP (*(.bev_excpt)) } > kseg1_bevexcpt .int_excpt : { KEEP (*(.int_excpt)) } > kseg1_intexcpt .dbg_excpt = ORIGIN(kseg1_dbgexcpt); .start : { /* KSEG0 Reset startup logic */ *(.start) /* KSEG0 exception handlers */ *(.nmi_handler) *(.bev_handler) *(.int_handler) } > kseg0_bootmem .dbg_code = ORIGIN(kseg1_dbgcode); .devcfg : { KEEP (*(.devcfg)) } > kseg1_devcfg /* Program FLASH sections */ .text : { _stext = ABSOLUTE(.); *(.text .text.*) *(.stub) KEEP (*(.text.*personality*)) *(.gnu.linkonce.t.*) *(.gnu.warning) *(.mips16.fn.*) *(.mips16.call.*) /* Read-only data is included in the text section */ *(.rodata .rodata.*) *(.rodata1) *(.gnu.linkonce.r.*) /* Small initialized constant global and static data */ *(.sdata2 .sdata2.*) *(.gnu.linkonce.s2.*) /* Uninitialized constant global and static data */ *(.sbss2 .sbss2.*) *(.gnu.linkonce.sb2.*) _etext = ABSOLUTE(.); } > kseg0_progmem /* Initialization data begins here in progmem */ _data_loaddr = LOADADDR(.data); .eh_frame_hdr : { *(.eh_frame_hdr) } .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) } /* RAM functions are positioned at the beginning of RAM so that * they can be guaranteed to satisfy the 2Kb alignment requirement. */ /* This causes failures if there are no RAM functions .ramfunc ALIGN(2K) : { _sramfunc = ABSOLUTE(.); *(.ramfunc .ramfunc.*) _eramfunc = ABSOLUTE(.); } > kseg1_datamem AT > kseg0_progmem _ramfunc_loadaddr = LOADADDR(.ramfunc); _ramfunc_sizeof = SIZEOF(.ramfunc); _bmxdkpba_address = _sramfunc - ORIGIN(kseg1_datamem) ; _bmxdudba_address = LENGTH(kseg1_datamem) ; _bmxdupba_address = LENGTH(kseg1_datamem) ; */ .data : { _sdata = ABSOLUTE(.); *(.data .data.*) *(.gnu.linkonce.d.*) KEEP (*(.gnu.linkonce.d.*personality*)) *(.data1) } > kseg1_datamem AT > kseg0_progmem .eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) } _gp = ALIGN(16) + 0x7FF0 ; .got : { *(.got.plt) *(.got) } > kseg1_datamem AT > kseg0_progmem .sdata : { *(.sdata .sdata.* .gnu.linkonce.s.*) } > kseg1_datamem AT > kseg0_progmem .lit8 : { *(.lit8) } > kseg1_datamem AT > kseg0_progmem .lit4 : { *(.lit4) _edata = ABSOLUTE(.); } >kseg1_datamem AT>kseg0_progmem .sbss : { _sbss = ABSOLUTE(.); *(.dynsbss) *(.sbss .sbss.* .gnu.linkonce.sb.*) *(.scommon) } >kseg1_datamem .bss : { *(.dynbss) *(.bss .bss.*) *(.gnu.linkonce.b.*) *(COMMON) _ebss = ABSOLUTE(.); } > kseg1_datamem /* 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) } /* DWARF debug sections */ /* 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) } /* 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) } /DISCARD/ : { *(.note.GNU-stack) } }