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问题如下：
我下载了TI的2812片内Flash测试的Demo，.CMD文件如下：
MEMORY
{
PAGE 0: /* Program Memory */
ZONE0 : origin = 0x002000, length = 0x002000 /* XINTF zone 0 */
ZONE1 : origin = 0x004000, length = 0x002000 /* XINTF zone 1 */
RAML0 : origin = 0x008000, length = 0x001000 /* on-chip RAM block L0 */
ZONE2 : origin = 0x080000, length = 0x080000 /* XINTF zone 2 */
ZONE6 : origin = 0x100000, length = 0x040000 /* XINTF zone 6 allocated for code */
OTP : origin = 0x3D7800, length = 0x000800 /* on-chip OTP */
FLASHJ : origin = 0x3D8000, length = 0x002000 /* on-chip FLASH */
FLASHI : origin = 0x3DA000, length = 0x002000 /* on-chip FLASH */
FLASHH : origin = 0x3DC000, length = 0x004000 /* on-chip FLASH */
FLASHG : origin = 0x3E0000, length = 0x004000 /* on-chip FLASH */
FLASHF : origin = 0x3E4000, length = 0x004000 /* on-chip FLASH */
FLASHE : origin = 0x3E8000, length = 0x004000 /* on-chip FLASH */
FLASHD : origin = 0x3EC000, length = 0x004000 /* on-chip FLASH */
FLASHC : origin = 0x3F0000, length = 0x004000 /* 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 : origin = 0x3F7FF8, length = 0x000008 /* Part of FLASHA. CSM password locations in FLASHA */
RAMH0 : origin = 0x3F8000, length = 0x002000 /* on-chip RAM block H0 */
/* ZONE7 : origin = 0x3FC000, length = 0x003FC0 */ /* XINTF zone 7 available if MP/MCn=1 */
ROM : origin = 0x3FF000, length = 0x000FC0 /* Boot ROM available if MP/MCn=0 */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
PAGE 1 : /* Data Memory */
RAMM0 : origin = 0x000000, length = 0x000400 /* on-chip RAM block M0 */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAML1 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L1 */
ZONE6 : origin = 0x104000, length = 0x004000 /* XINTF zone 6 allocated for data */
FLASHB : origin = 0x3F4000, length = 0x002000 /* on-chip FLASH */
}
SECTIONS
{
/* Allocate program areas: */
.cinit : > ZONE6 PAGE = 0
.pinit : > ZONE6, PAGE = 0
.text : > ZONE6 PAGE = 0
codestart : > BEGIN PAGE = 0
reset_vec : > RESET PAGE = 0
ramfuncs : LOAD = ZONE6,
RUN = RAMH0,
LOAD_START(_RamfuncsLoadStart),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
PAGE = 0
csmpasswds : > CSM_PWL PAGE = 0
ramdata : > RAMM1 PAGE = 1
/* Allocate uninitalized data sections: */
.stack : > RAMM0 PAGE = 1
.ebss : > ZONE6 PAGE = 1
.esysmem : > ZONE6 PAGE = 1
/* Initalized sections go in Flash */
.econst : > ZONE6, PAGE = 1
.switch : > ZONE6, PAGE = 1
/* Allocate IQ math areas: */
IQmath : > ZONE6 PAGE = 0 /* Math Code */
IQmathTables : > ROM PAGE = 0, TYPE = NOLOAD /* Math Tables In ROM */
.reset : > RESET, PAGE = 0, TYPE = DSECT
vectors : > VECTORS PAGE = 0, TYPE = DSECT
}
在LOAD PROGRAM时报警不能校验0x3F7FF6、0x3F7FF8、0x3F7F80地址的数据，不知道什么原因？（我用的是CCS3.1）
另外，对于片内Flash烧写还有一些不明之处：
1.如何将数据、程序烧写到片内Flash中？只要CMD文件中定义就可以了么？
2.CCS中的Flash烧写插件是干吗用的？
3.SDFlash是干吗用的？
4.所谓Flash API指的是什么？
以上问题很是困惑，对片内Flash感觉很晕，以前也没有用过，同时对DSP也不太熟悉，所以很头疼。
解答如下：
1.的确要在.CMD文件中指定程序代码的存放地址.
2.CCS中的FLASH插件就用来将编译连接后产生的代码"烧"入FLASH.
3.SDFlash一个工具,可以不在CCS下就能对FLASH进行烧写.
4.Flash API是指一种FLASH烧写算法,也即CCS如何将代码烧入FLASH,厂商搞的,我们可以不管,只在CCS中指定其存放路径即可.
另外送一个我改过的.CMD文件看一下,文件没有错误!
MEMORY
{
PAGE 0: /* Program Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */
RAML0 : origin = 0x008000, length = 0x001000 /* on-chip RAM block L0 */
OTP : origin = 0x3D7800, length = 0x000800 /* on-chip OTP */
FLASHJ : origin = 0x3D8000, length = 0x002000 /* on-chip FLASH */
FLASHI : origin = 0x3DA000, length = 0x002000 /* on-chip FLASH */
FLASHH : origin = 0x3DC000, length = 0x004000 /* on-chip FLASH */
FLASHG : origin = 0x3E0000, length = 0x004000 /* on-chip FLASH */
FLASHF : origin = 0x3E4000, length = 0x004000 /* on-chip FLASH */
FLASHE : origin = 0x3E8000, length = 0x004000 /* on-chip FLASH */
FLASHD : origin = 0x3EC000, length = 0x004000 /* on-chip FLASH */
FLASHC : origin = 0x3F0000, length = 0x004000 /* on-chip FLASH */
FLASHA : origin = 0x3F6000, length = 0x001FF6 /* on-chip FLASH */
BEGIN : origin = 0x3F7FF6, length = 0x000002 /* Part of FLASHA. Used for "boot to Flash" bootloader mode. */
ROM : origin = 0x3FF000, length = 0x000FC0 /* Boot ROM available if MP/MCn=0 */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */
/* Registers remain on PAGE1 */
RAMM01 : origin = 0x000000, length = 0x000800 /* on-chip RAM block M0 */
/* RAMM1 : origin = 0x000400, length = 0x000400 */ /* on-chip RAM block M1 */
DEV_EMU : origin = 0x000880, length = 0x000180 /* Device emulation registers */
FLASH_REGS : origin = 0x000A80, length = 0x000060 /* FLASH registers */
CSM : origin = 0x000AE0, length = 0x000010 /* Code security module registers */
XINTF : origin = 0x000B20, length = 0x000020 /* External interface registers */
CPU_TIMER0 : origin = 0x000C00, length = 0x000008 /* CPU Timer0 registers (CPU Timer1 and Timer2 are reserved for BIOS)*/
PIE_CTRL : origin = 0x000CE0, length = 0x000020 /* PIE control registers */
PIE_VECT : origin = 0x000D00, length = 0x000100 /* PIE vector table */
/* XINTF ZONE0 */
XINTF_DURAM: origin = 0x002000, length = 0x001000 /* Dualram address space*/
ECAN_A : origin = 0x006000, length = 0x000100 /* eCAN registers */
ECAN_AMBOX : origin = 0x006100, length = 0x000100 /* eCAN mailboxes */
SYSTEM : origin = 0x007010, length = 0x000020 /* System control registers */
SPI_A : origin = 0x007040, length = 0x000010 /* SPI registers */
SCI_A : origin = 0x007050, length = 0x000010 /* SCI-A registers */
XINTRUPT : origin = 0x007070, length = 0x000010 /* External interrupt registers */
GPIOMUX : origin = 0x0070C0, length = 0x000020 /* GPIO mux registers */
GPIODAT : origin = 0x0070E0, length = 0x000020 /* GPIO data registers */
ADC : origin = 0x007100, length = 0x000020 /* ADC registers */
EV_A : origin = 0x007400, length = 0x000040 /* Event Manager A registers */
EV_B : origin = 0x007500, length = 0x000040 /* Event Manager B registers */
SCI_B : origin = 0x007750, length = 0x000010 /* SCI-B registers */
MCBSP_A : origin = 0x007800, length = 0x000040 /* McBSP registers */
RAML1 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L1 */
FLASHB : origin = 0x3F4000, length = 0x002000 /* on-chip FLASH */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008 /* CSM password locations in FLASHA */
RAMH0 : origin = 0x3F8000, length = 0x002000 /* on-chip RAM block H0 */
}
/* 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
*/
SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASHC, PAGE = 0
.text : > FLASHC, PAGE = 0
codestart : > BEGIN, PAGE = 0
ramfuncs : LOAD = FLASHC, RUN = RAML0, PAGE = 0
/* Allocate uninitalized data sections: */
.stack : > RAMM01, PAGE = 1
.bss : > RAML1, PAGE = 1
.ebss : > RAML1, PAGE = 1
.sysmem : > RAMH0, PAGE = 1
.esysmem : > RAMH0, PAGE = 1
/* Initalized sections go in Flash */
.const : > FLASHB, PAGE = 1
.econst : > FLASHB, PAGE = 1
.switch : > FLASHB, PAGE = 1 /*xzb add 2005.02.19 */
/* Allocate IQ math areas: */
IQmath : > FLASHC, PAGE = 0 /* Math Code */
IQmathTables : > ROM, PAGE = 0, TYPE = NOLOAD /* Math Tables In ROM */
/* .reset indicates 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 to
/* DESECT */
.reset : > RESET, PAGE = 0, TYPE = DSECT
vectors : > VECTORS, PAGE = 0, TYPE = DSECT
/* ------------------------------------------------------------- */
/* The following allocations are required for the DSP28 Header file
examples. Each allocation maps a structure defined in the DSP28
header files to the memory location of those registers.
*/
/* 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
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
SpiRegsFile : > 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
/*Allocate Dual Port Ram Structure */
Dual_Port_SpaceFile :> XINTF_DURAM, PAGE = 1
}
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