[讨论] 连接命令文件（CMD文件）F28027.cmd

qinkaiabc 2012-12-20 12:40 楼主

1.通过MEMORY伪指令来指示存储空间
MEMORY
{
PAGE 0: /* Program Memory */ /* 程序存储空间 */
               /* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */

PRAML0    : origin = 0x008000, length = 0x000800    /* on-chip RAM block L0 */
OTP       : origin = 0x3D7800, length = 0x000400    /* on-chip OTP */
FLASHD    : origin = 0x3F0000, length = 0x002000    /* on-chip FLASH */
FLASHC    : origin = 0x3F2000, length = 0x002000    /* on-chip FLASH */
FLASHA    : origin = 0x3F6000, length = 0x001F80    /* on-chip FLASH */
CSM_RSVD : origin = 0x3F7F80, length = 0x000076    /* Part of FLASHA.  Program with all 0x0000 when CSM is in use. */
BEGIN    : origin = 0x3F7FF6, length = 0x000002    /* Part of FLASHA.  Used for "boot to Flash" bootloader mode. */
CSM_PWL_P0  : origin = 0x3F7FF8, length = 0x000008    /* Part of FLASHA.  CSM password locations in FLASHA */

IQTABLES : origin = 0x3FE000, length = 0x000B50    /* IQ Math Tables in Boot ROM */
IQTABLES2 : origin = 0x3FEB50, length = 0x00008C    /* IQ Math Tables in Boot ROM */
IQTABLES3 : origin = 0x3FEBDC, length = 0x0000AA    /* IQ Math Tables in Boot ROM */

ROM       : origin = 0x3FF27C, length = 0x000D44    /* Boot ROM */
RESET    : origin = 0x3FFFC0, length = 0x000002    /* part of boot ROM  */
VECTORS    : origin = 0x3FFFC2, length = 0x00003E    /* part of boot ROM  */

PAGE 1 : /* Data Memory */  /* 数据存储空间 */
         /* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */
         /* Registers remain on PAGE1                                                 */

BOOT_RSVD : origin = 0x000000, length = 0x000050    /* Part of M0, BOOT rom will use this for stack */
RAMM0    : origin = 0x000050, length = 0x0003B0    /* on-chip RAM block M0 */
RAMM1    : origin = 0x000400, length = 0x000400    /* on-chip RAM block M1 */
DRAML0    : origin = 0x008800, length = 0x000800    /* on-chip RAM block L0 */
FLASHB    : origin = 0x3F4000, length = 0x002000    /* on-chip FLASH */
}

PAGE 0:    /* 程序存储空间 */
PAGE 1: /* 数据存储空间 */
PRAML0 、OTP  、FLASHC 、IQTABLES2 、......等等表示：某一属性和地址范围的存储空间名称。
origin ：定义存储空间起始地址的关键字
length ：定义存储空间长度的关键字

/* Allocate sections to memory blocks.
Note:
      codestart user defined section in DSP28_CodeStartBranch.asm used to redirect code
               execution when booting to flash
      ramfuncs  user defined section to store functions that will be copied from Flash into RAM
*/
2.通过SECTIONS伪指令来分配段的存储空间

SECTIONS
{

/* Allocate program areas: */
.cinit             : > FLASHA    PAGE = 0
.pinit             : > FLASHA,    PAGE = 0
.text             : > FLASHA    PAGE = 0
codestart          : > BEGIN       PAGE = 0
ramfuncs          : LOAD = FLASHA,
                     RUN = PRAML0,
                     LOAD_START(_RamfuncsLoadStart),
                     LOAD_END(_RamfuncsLoadEnd),
                     RUN_START(_RamfuncsRunStart),
                     PAGE = 0
LOAD  ：定义输出段将会被装载到哪里的关键字
RUN  ：定义输出段将会在哪里运行的关键字
csmpasswds       : > CSM_PWL_P0 PAGE = 0
csm_rsvd          : > CSM_RSVD    PAGE = 0

/* Allocate uninitalized data sections: */
.stack             : > RAMM0       PAGE = 1
.ebss             : > DRAML0    PAGE = 1
.esysmem          : > DRAML0    PAGE = 1

/* Initalized sections go in Flash */
/* For SDFlash to program these, they must be allocated to page 0 */
.econst          : > FLASHA    PAGE = 0
.switch          : > FLASHA    PAGE = 0

/* Allocate IQ math areas: */
IQmath             : > FLASHA    PAGE = 0          /* Math Code */
IQmathTables       : > IQTABLES, PAGE = 0, TYPE = NOLOAD

/* Uncomment the section below if calling the IQNexp() or IQexp()
   functions from the IQMath.lib library in order to utilize the
   relevant IQ Math table in Boot ROM (This saves space and Boot ROM
   is 1 wait-state). If this section is not uncommented, IQmathTables2
   will be loaded into other memory (SARAM, Flash, etc.) and will take
   up space, but 0 wait-state is possible.
*/
/*
IQmathTables2 : > IQTABLES2, PAGE = 0, TYPE = NOLOAD
{

            IQmath.lib (IQmathTablesRam)

}
*/
/* Uncomment the section below if calling the IQNasin() or IQasin()
   functions from the IQMath.lib library in order to utilize the
   relevant IQ Math table in Boot ROM (This saves space and Boot ROM
   is 1 wait-state). If this section is not uncommented, IQmathTables2
   will be loaded into other memory (SARAM, Flash, etc.) and will take
   up space, but 0 wait-state is possible.
*/
/*
IQmathTables3 : > IQTABLES3, PAGE = 0, TYPE = NOLOAD
{

            IQmath.lib (IQmathTablesRam)

}
*/

/* .reset is a standard section used by the compiler.  It contains the */
/* the address of the start of _c_int00 for C Code. /*
/* When using the boot ROM this section and the CPU vector */
/* table is not needed.  Thus the default type is set here to  */
/* DSECT  */
.reset             : > RESET,    PAGE = 0, TYPE = DSECT
vectors          : > VECTORS    PAGE = 0, TYPE = DSECT

}

/*
//===========================================================================
// End of file.
//===========================================================================
*/