2812CMD文件之疑问

只看该作者 · 2010-5-24 21:52

2812的标准CMD文件如下：
MEMORY
{
PAGE 0 :
PRAMH0    : origin = 0x3F8000, length = 0x001A00
/*  PRAML0L1 : origin = 0x008000, length = 0x002000 */
/* SARAM                   */
OTP       : origin = 0x3D7800, length = 0x000800
/* SARAM                   */
FLASHJ    : origin = 0x3D8000, length = 0x002000
FLASHI    : origin = 0x3DA000, length = 0x002000
FLASHH    : origin = 0x3DC000, length = 0x004000
FLASHG    : origin = 0x3E0000, length = 0x004000
FLASHF    : origin = 0x3E4000, length = 0x004000
FLASHE    : origin = 0x3E8000, length = 0x004000
FLASHD    : origin = 0x3EC000, length = 0x004000
FLASHC    : origin = 0x3F0000, length = 0x004000
FLASHA    : origin = 0x3F6000, length = 0x001FF6
BEGIN    : origin = 0x3F7FF6, length = 0x000002
PASSWDS    : origin = 0x3F7FF8, length = 0x000008
ROM       : origin = 0x3FF000, length = 0x000FC0
VECTORS    : origin = 0x3FFFC2, length = 0x00003E
RESET    : origin = 0x3FFFC0, length = 0x000002

PAGE 1 :
/* SARAM                   */
RAMM0M1 : origin = 0x000000, length = 0x000800
RAML0L1 : origin = 0x008000, length = 0x002000
DRAMH0    : origin = 0x3F9A00, length = 0x000300
SRAM    : origin = 0x080000, length = 0x002000
FLASHB    : origin = 0x3F4000, length = 0x002000
BOOTROM : origin = 0x3ff000, length = 0x000502

/* Peripheral Frame 0: */
DEV_EMU : origin = 0x000880, length = 0x000180
FLASH_REGS : origin = 0x000A80, length = 0x000060
CSM       : origin = 0x000AE0, length = 0x000010
XINTF    : origin = 0x000B20, length = 0x000020
CPU_TIMER0 : origin = 0x000C00, length = 0x000008
CPU_TIMER1 : origin = 0x000C08, length = 0x000008
CPU_TIMER2 : origin = 0x000C10, length = 0x000008
PIE_CTRL : origin = 0x000CE0, length = 0x000020
PIE_VECT : origin = 0x000D00, length = 0x000100

/* Peripheral Frame 1: */
ECAN_A    : origin = 0x006000, length = 0x000100
ECAN_AMBOX : origin = 0x006100, length = 0x000100

/* Peripheral Frame 2: */
SYSTEM    : origin = 0x007010, length = 0x000020
SPI_A    : origin = 0x007040, length = 0x000010
SCI_A    : origin = 0x007050, length = 0x000010
XINTRUPT : origin = 0x007070, length = 0x000010
GPIOMUX : origin = 0x0070C0, length = 0x000020
GPIODAT : origin = 0x0070E0, length = 0x000020
ADC       : origin = 0x007100, length = 0x000020
EV_A    : origin = 0x007400, length = 0x000040
EV_B    : origin = 0x007500, length = 0x000040
SPI_B    : origin = 0x007740, length = 0x000010
SCI_B    : origin = 0x007750, length = 0x000010
MCBSP_A : origin = 0x007800, length = 0x000040

/* CSM Password Locations */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008

}

只看该作者 · 2010-5-24 21:53

SECTIONS
{
/* Allocate program areas: */
CodeStart          : > BEGIN    PAGE = 0
.cinit             : > FLASHJ    PAGE = 0
.text             : > FLASHD    PAGE = 0


      vectors          : > VECTORS    PAGE = 0, TYPE = DSECT
.reset             : > RESET    PAGE = 0, TYPE = DSECT /*这个分配很重要*/

/*       UserPage:       LOAD = FLASHD,PAGE = 0
                                       RUN  = PRAMH0,PAGE = 0
                                       RUN_START(_UserPage_runstart),
                                       LOAD_START(_UserPage_loadstart),
                                       LOAD_END(_UserPage_loadend)
*/
/*       codeA:          LOAD = FLASHD,PAGE = 0
                                       RUN  = PRAMH0,PAGE = 0
                                       RUN_START(_codeA_runstart),
                                       LOAD_START(_codeA_loadstart),
                                       LOAD_END(_codeA_loadend)
*/
      ramfuncs:       LOAD = FLASHD,PAGE = 0
                                       RUN  = RAML0L1,PAGE = 1
                                       RUN_START(_ramfuncs_runstart),
                                       LOAD_START(_ramfuncs_loadstart),
                                       LOAD_END(_ramfuncs_loadend)

/* Allocate data areas: */
.stack             : > RAMM0M1    PAGE = 1
.bss             : > SRAM       PAGE = 1
.ebss             : > SRAM       PAGE = 1
/* .const             : > FLASHB PAGE = 1 */
.econst          : > FLASHB    PAGE = 1

.const             : > FLASHB    PAGE = 1
/*  .SWITCH          : > FLASHA PAGE = 0       */

.sysmem          : > SRAM       PAGE = 1
.esysmem          : > SRAM       PAGE = 1

/* Allocate IQ math areas: */
/* IQmath             : > FLASHI    PAGE = 0 /* Math Code */
/* IQmathFastTables : > FLASHI    PAGE = 0 /* Math Tables in fast memory */
/* IQmathTables       : > ROM       PAGE = 0 /* Math Tables In ROM */

/* Allocate Peripheral Frame 0 Register Structures: */
DevEmuRegsFile    : > DEV_EMU    PAGE = 1
FlashRegsFile    : > FLASH_REGS  PAGE = 1
CsmRegsFile       : > CSM       PAGE = 1
XintfRegsFile    : > XINTF    PAGE = 1
CpuTimer0RegsFile : > CPU_TIMER0  PAGE = 1
CpuTimer1RegsFile : > CPU_TIMER1  PAGE = 1
CpuTimer2RegsFile : > CPU_TIMER2  PAGE = 1
PieCtrlRegsFile    : > PIE_CTRL PAGE = 1
PieVectTable       : > PIE_VECT PAGE = 1

/* Allocate Peripheral Frame 2 Register Structures: */
ECanaRegsFile    : > ECAN_A    PAGE = 1
ECanaMboxesFile    : > ECAN_AMBOX  PAGE = 1

/* Allocate Peripheral Frame 1 Register Structures: */
SysCtrlRegsFile    : > SYSTEM    PAGE = 1
SpiaRegsFile       : > SPI_A    PAGE = 1
SciaRegsFile       : > SCI_A    PAGE = 1
XIntruptRegsFile : > XINTRUPT PAGE = 1
GpioMuxRegsFile    : > GPIOMUX    PAGE = 1
GpioDataRegsFile : > GPIODAT    PAGE = 1
AdcRegsFile       : > ADC       PAGE = 1
EvaRegsFile       : > EV_A       PAGE = 1
EvbRegsFile       : > EV_B       PAGE = 1
ScibRegsFile       : > SCI_B    PAGE = 1
McbspaRegsFile    : > MCBSP_A    PAGE = 1

/* CSM Password Locations */
CsmPwlFile       : > CSM_PWL    PAGE = 1

}

问题如下：
1.如果2812上电后使用的是PIE中断矢量表，那么vectors    : > VECTORS    PAGE = 0, TYPE = DSECT是不是可以不映射
2。.reset             : > RESET    PAGE = 0, TYPE = DSECT /*这个分配很重要*/ 这句后面的TYPE=DSECT是什么意思？
3.在自定义段ramfuncs下，将FLASH程序加载到RAM里面，在工程文件中定义如下：
extern Uint16 Ramfuncs_loadStart;
extern Uint16 Ramfuncs_loadEnd;
extern Uint16 Ramfuncs_runStart;
需不需要指定这些变量是哪个具体的地址，即要不要给它们赋值呢？