/**************************************************************************** * boards/mips/pic32mz/pic32mz-starterkit/scripts/xc32-debug.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. * ****************************************************************************/ /* Memory Regions ***********************************************************/ MEMORY { /* The PIC32MZ2048ECH144 and PIC32MZ2048ECM144 chips have has 2048Kb of * program FLASH at physical address 0x1d000000 but is always accessed * at KSEG0 address 0x9d00:0000 */ kseg0_program_mem (rx) : ORIGIN = 0x9d000000, LENGTH = 2048K /* The PIC32MZ2048ECH144 and PIC32MZ2048ECM144 chips have 160Kb of boot * FLASH: 80Kb at physical address 0x1fc4000 (Boot Flash 1, boot1) and * 80Kb at physical address 0x1fc60000 (Boot Flash 2, boot2). Either * may be mappled to the lower boot alias region (0x1fc00000, * boolalias1) or the upper boot alias region (0x1fc20000, bootalias2). * This linker script assumes that Boot Flash 1 is mapped to the lower * alias region and Boot Flash 2 to the upper region. * * NOTE: This linker script simply writes into the lower boot alias, * whichever boot FLASH that may correspond to. The other boot FLASH * is simply ignored. * * 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 * ADEVCFG3-0 0x1fc0ff40 KSEG1 16 12288 (12Kb) * DEVCFG3-0 0x1fc0ffc0 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 = 0x9fc004ac, LENGTH = 8192-1196 kseg1_dbgcode (rx) : ORIGIN = 0xbfc02000, LENGTH = 4096-16 kseg1_adevcfg (r) : ORIGIN = 0x1fc0ff40, LENGTH = 128 kseg1_devcfg (r) : ORIGIN = 0x1fc0ffc0, LENGTH = 128 /* The The PIC32MZ2048ECH144 and PIC32MZ2048ECM144 chips have has 512Kb * of data memory at physical address 0x00000000. Since the PIC32MZ * has no data cache, this memory is always accessed through KSEG1. * * When used with MPLABX, we need to set aside 512 bytes of memory * for use by MPLABX and 128 for DSP register storage. */ kseg1_data_mem (rw!x) : ORIGIN = 0xa0000200, LENGTH = 512K - 640 } 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); .adevcfg : { KEEP (*(.adevcfg)) } > kseg1_adevcfg .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_program_mem /* Initialization data begins here in progmem */ _data_loaddr = LOADADDR(.data); .eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } .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_data_mem AT > kseg0_program_mem _ramfunc_loadaddr = LOADADDR(.ramfunc); _ramfunc_sizeof = SIZEOF(.ramfunc); _bmxdkpba_address = _sramfunc - ORIGIN(kseg1_data_mem) ; _bmxdudba_address = LENGTH(kseg1_data_mem) ; _bmxdupba_address = LENGTH(kseg1_data_mem) ; */ .data : { _sdata = ABSOLUTE(.); *(.data .data.*) *(.gnu.linkonce.d.*) KEEP (*(.gnu.linkonce.d.*personality*)) *(.data1) } > kseg1_data_mem AT > kseg0_program_mem .eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) } _gp = ALIGN(16) + 0x7FF0 ; .got : { *(.got.plt) *(.got) } > kseg1_data_mem AT > kseg0_program_mem .sdata : { *(.sdata .sdata.* .gnu.linkonce.s.*) } > kseg1_data_mem AT > kseg0_program_mem .lit8 : { *(.lit8) } > kseg1_data_mem AT > kseg0_program_mem .lit4 : { *(.lit4) . = ALIGN(4); _edata = ABSOLUTE(.); } >kseg1_data_mem AT>kseg0_program_mem .sbss : { . = ALIGN(16); _sbss = ABSOLUTE(.); *(.dynsbss) *(.sbss .sbss.* .gnu.linkonce.sb.*) *(.scommon) } >kseg1_data_mem .bss : { *(.dynbss) *(.bss .bss.*) *(.gnu.linkonce.b.*) *(COMMON) . = ALIGN(16); _ebss = ABSOLUTE(.); } > kseg1_data_mem /* 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) } }