FreeEMS: memory.x Source File

00001 /*  FreeEMS - the open source engine management system
00002 
00003     Copyright 2008, 2009 Fred Cooke
00004     
00005     This file is part of the FreeEMS project.
00006 
00007     FreeEMS software is free software: you can redistribute it and/or modify
00008     it under the terms of the GNU General Public License as published by
00009     the Free Software Foundation, either version 3 of the License, or
00010     (at your option) any later version.
00011 
00012     FreeEMS software is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015     GNU General Public License for more details.
00016 
00017     You should have received a copy of the GNU General Public License
00018     along with any FreeEMS software.  If not, see http://www.gnu.org/licenses/
00019 
00020     We ask that if you make any changes to this file you email them upstream to
00021     us at admin(at)diyefi(dot)org or, even better, fork the code on github.com!
00022 
00023     Thank you for choosing FreeEMS to run your engine! */
00024 
00025 
00043   MEMORY
00044   {
00045 /*  regs        (r)     : ORIGIN = 0x0000, LENGTH = 0x0800 /*   2k register space DON'T use! */
00046     eeprom      (r)     : ORIGIN = 0x0800, LENGTH = 0x0800 /*   2K of eeprom for now, 4K requires paging */
00047 
00048     /* RAM space split up for tuning and flash burning use as well as GP use */
00049     rpage       (rw)    : ORIGIN = 0x1000, LENGTH = 0x1000 /*   4k WINDOW for large tables etc */
00050     txbuf       (rw)    : ORIGIN = 0x2000, LENGTH = 0x0820 /*  ~2k FIXED transmission buffer */
00051     rxbuf       (rw)    : ORIGIN = 0x2820, LENGTH = 0x0810 /*  ~2k FIXED reception buffer */
00052     data        (rw)    : ORIGIN = 0x3030, LENGTH = 0x0FD0 /*  ~4k FIXED general purpose RAM */
00053     /* The TX and RX buffers are slightly larger than 2k because the RX buffer */
00054     /* needs to also receive a header, checksum and attributes for the data    */
00055     /* involved and the TX buffer needs to handle all of those two fold.       */
00056 
00057     /* Flash space in linear space while using the page window (16k + 14k + 2k SM = 30k usable, 2k protected) */
00058     text1       (rx)    : ORIGIN = 0x4000, LENGTH = 0x3800 /*   Unpaged 14k flash block before page window  */
00059     fixedconf1  (rx)    : ORIGIN = 0x7800, LENGTH = 0x0400 /*   Unpaged   1K flash block before page window */
00060     fixedconf2  (rx)    : ORIGIN = 0x7C00, LENGTH = 0x0400 /*   Unpaged   1K flash block before page window */
00061     /*ppaged    (rx)    : ORIGIN = 0x8000, LENGTH = 0x4000      16K flash page window, DO NOT USE */
00062     text        (rx)    : ORIGIN = 0xC000, LENGTH = 0x3710 /*   Unpaged 14K flash block after page window minus serial monitor and vector space */
00063     /* TODO split the above text and text1 regions into halves or similar to allow us to know how the linear space is being spent, eg perf/required/isr etc */
00064 
00065     /* These are correct as of the 0.0.17 release */
00066     ppageE0 (rx)    : ORIGIN = 0x390000, LENGTH = 0x4000
00067     ppageE1 (rx)    : ORIGIN = 0x394000, LENGTH = 0x4000
00068     ppageE2 (rx)    : ORIGIN = 0x398000, LENGTH = 0x4000
00069     ppageE3 (rx)    : ORIGIN = 0x39C000, LENGTH = 0x4000
00070     ppageE4 (rx)    : ORIGIN = 0x3A0000, LENGTH = 0x4000
00071     ppageE5 (rx)    : ORIGIN = 0x3A4000, LENGTH = 0x4000
00072     ppageE6 (rx)    : ORIGIN = 0x3A8000, LENGTH = 0x4000
00073     ppageE7 (rx)    : ORIGIN = 0x3AC000, LENGTH = 0x4000
00074     ppageE8 (rx)    : ORIGIN = 0x3B0000, LENGTH = 0x4000
00075     ppageE9 (rx)    : ORIGIN = 0x3B4000, LENGTH = 0x4000
00076     ppageEA (rx)    : ORIGIN = 0x3B8000, LENGTH = 0x4000
00077     ppageEB (rx)    : ORIGIN = 0x3BC000, LENGTH = 0x4000
00078     ppageEC (rx)    : ORIGIN = 0x3C0000, LENGTH = 0x4000
00079     ppageED (rx)    : ORIGIN = 0x3C4000, LENGTH = 0x4000
00080     ppageEE (rx)    : ORIGIN = 0x3C8000, LENGTH = 0x4000
00081     ppageEF (rx)    : ORIGIN = 0x3CC000, LENGTH = 0x4000
00082     ppageF0 (rx)    : ORIGIN = 0x3D0000, LENGTH = 0x4000
00083     ppageF1 (rx)    : ORIGIN = 0x3D4000, LENGTH = 0x4000
00084     ppageF2 (rx)    : ORIGIN = 0x3D8000, LENGTH = 0x4000
00085     ppageF3 (rx)    : ORIGIN = 0x3DC000, LENGTH = 0x4000
00086     ppageF4 (rx)    : ORIGIN = 0x3E0000, LENGTH = 0x4000
00087     ppageF5 (rx)    : ORIGIN = 0x3E4000, LENGTH = 0x4000
00088     ppageF6 (rx)    : ORIGIN = 0x3E8000, LENGTH = 0x4000
00089     ppageF7 (rx)    : ORIGIN = 0x3EC000, LENGTH = 0x4000
00090     ppageF8 (rx)    : ORIGIN = 0x3F0000, LENGTH = 0x4000
00091     fpageF9 (rx)    : ORIGIN = 0x3F4000, LENGTH = 0x2000
00092     dpageF9 (rx)    : ORIGIN = 0x3F6000, LENGTH = 0x2000
00093     fpageFA (rx)    : ORIGIN = 0x3F8000, LENGTH = 0x2000
00094     dpageFA (rx)    : ORIGIN = 0x3FA000, LENGTH = 0x2000
00095     fpageFB (rx)    : ORIGIN = 0x3FC000, LENGTH = 0x2000
00096     dpageFB1    (rx)    : ORIGIN = 0x3FE000, LENGTH = 0x0400
00097     dpageFB2    (rx)    : ORIGIN = 0x3FE400, LENGTH = 0x0400
00098     dpageFB3    (rx)    : ORIGIN = 0x3FE800, LENGTH = 0x0400
00099     dpageFB4    (rx)    : ORIGIN = 0x3FEC00, LENGTH = 0x0400
00100     dpageFB5    (rx)    : ORIGIN = 0x3FF000, LENGTH = 0x0400
00101     dpageFB6    (rx)    : ORIGIN = 0x3FF400, LENGTH = 0x0400
00102     dpageFB7    (rx)    : ORIGIN = 0x3FF800, LENGTH = 0x0400
00103     dpageFB8    (rx)    : ORIGIN = 0x3FFC00, LENGTH = 0x0400
00104     fpageFC (rx)    : ORIGIN = 0x400000, LENGTH = 0x2000
00105     dpageFC (rx)    : ORIGIN = 0x402000, LENGTH = 0x2000
00106     ppageFE (rx)    : ORIGIN = 0x408000, LENGTH = 0x4000 /* Represents 0x8000 - 0xC000 ("text2" paged) */
00107 /*  ppageFD (rx)    : ORIGIN = 0x404000, LENGTH = 0x4000 ** Represents 0x4000 - 0x8000 ("text1" paged) */
00108 /*  ppageFF (rx)    : ORIGIN = 0x40C000, LENGTH = 0x3710 ** Represents 0xC000 - 0xFFFF ("text" paged) */
00109 /*  The previous two lines are included for clarity only. */
00110 /*  Changes to this file should be reflected in memory.h and Makefile also */
00111   }
00112 
00113   PROVIDE (_stack = 0x4000-1); /* Start the stack immediately after ram */
00114   /* Vectors are located via the linker command line, not here. */
00115 
00116