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TMS320F280049C: F280049 bootloader 升级后不能复位

Kwong Yin Tsang
Prodigy 10 points
Part Number: TMS320F280049C
Other Parts Discussed in Thread: LAUNCHXL-F280049C

你好专家︰

最近在参考这篇文章在做F280049的二次bootloader。 开发版是用LAUNCHXL-F280049C评估板。

https://www.ti.com.cn/cn/lit/an/zhcadf7/zhcadf7.pdf?ts=1714136546245&ref_url=https%253A%252F%252Fwww.google.com%252F


我跟据了文章中指Bootloader和 APP Code的flash要分开，flash地址上没有重叠。也跟据了文章中提出Bootloader和 APP Code的entry point要分开（Bootloader的入口地址为0x80000，F280049 default entry point，App Code 我選用了 0x85000)
升级的过程也顺利，Bootloader能够利用Flash API成功写入需要升级的App code和成功跳进App code的地址( 0x85000) （App code我是使用闪灯的程序），成功運行App code (闪灯)

问题就是，当每一次顺利升级后，F280049不能复位回至bootloader 的程序，而是复位后会回到App code的程序。我曾经尝试用lanuchpad上的reset键和在App code 里用看门狗复位也都只会复位回到App code (闪灯)。只能把lanuchpad断电后重新上电，F280049才会回到boot loader 程序。

我理解如果reset后(0x3FFFC0)F280049起机应该会回到0x80000地址运行bootloader 的程序，但不知道为什么结果会是运行App code。

不知道是否

1. 复位后能进入bootloader 程序，但程序依旧卡左上次跳进App code的地址的位置以致进入了App code
2. 不能成功复位

附上bootloader .cmd档案

MEMORY
{
PAGE 0 :
   /* BEGIN is used for the "boot to Flash" bootloader mode   */

   BEGIN           	: origin = 0x080000, length = 0x000002
   RAMM0           	: origin = 0x0000F6, length = 0x00030A

   RAMGS0      : origin = 0x00C000, length = 0x002000
   RAMGS1      : origin = 0x00E000, length = 0x002000
   RAMGS2      : origin = 0x010000, length = 0x002000
   RAMGS3      : origin = 0x012000, length = 0x001FF8

   RAMLS0          	: origin = 0x008000, length = 0x000800
   RAMLS1          	: origin = 0x008800, length = 0x000800
   RAMLS2      		: origin = 0x009000, length = 0x000800
   RAMLS3      		: origin = 0x009800, length = 0x000800
   RAMLS4      		: origin = 0x00A000, length = 0x000800
   RESET           	: origin = 0x3FFFC0, length = 0x000002

   /* Flash sectors */
   /* BANK 0 */
   FLASH_BANK0_SEC0  : origin = 0x080002, length = 0x000FFE	/* on-chip Flash */
   FLASH_BANK0_SEC1  : origin = 0x081000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC2  : origin = 0x082000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC3  : origin = 0x083000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC4  : origin = 0x084000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC5  : origin = 0x085000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC6  : origin = 0x086000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC7  : origin = 0x087000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC8  : origin = 0x088000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC9  : origin = 0x089000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC10 : origin = 0x08A000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC11 : origin = 0x08B000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC12 : origin = 0x08C000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC13 : origin = 0x08D000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC14 : origin = 0x08E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC15 : origin = 0x08F000, length = 0x001000	/* on-chip Flash */

   /* BANK 1 */
   FLASH_BANK1_SEC0  : origin = 0x090000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC1  : origin = 0x091000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC2  : origin = 0x092000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC3  : origin = 0x093000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC4  : origin = 0x094000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC5  : origin = 0x095000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC6  : origin = 0x096000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC7  : origin = 0x097000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC8  : origin = 0x098000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC9  : origin = 0x099000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC10 : origin = 0x09A000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC11 : origin = 0x09B000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC12 : origin = 0x09C000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC13 : origin = 0x09D000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC14 : origin = 0x09E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC15 : origin = 0x09F000, length = 0x000FF0	/* on-chip Flash */

//   FLASH_BANK1_SEC15_RSVD : origin = 0x09FFF0, length = 0x000010  /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */

PAGE 1 :

   BOOT_RSVD       : origin = 0x000002, length = 0x0000F1     /* Part of M0, BOOT rom will use this for stack */
   RAMM1           : origin = 0x000400, length = 0x0003F8     /* on-chip RAM block M1 */
//   RAMM1_RSVD      : origin = 0x0007F8, length = 0x000008     /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */

   RAMLS5      : origin = 0x00A800, length = 0x000800
   RAMLS6      : origin = 0x00B000, length = 0x000800
   RAMLS7      : origin = 0x00B800, length = 0x000800

   RAMGS0      : origin = 0x00C000, length = 0x002000
   RAMGS1      : origin = 0x00E000, length = 0x002000
   RAMGS2      : origin = 0x010000, length = 0x002000
   RAMGS3      : origin = 0x012000, length = 0x001FF8
//   RAMGS3_RSVD : origin = 0x013FF8, length = 0x000008     /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
}


SECTIONS
{
   codestart        : > BEGIN,     PAGE = 0, ALIGN(4)
   .text            : >> FLASH_BANK0_SEC2 | FLASH_BANK0_SEC3 | FLASH_BANK0_SEC4 ,   PAGE = 0, ALIGN(4)
   .cinit           : > FLASH_BANK0_SEC1,     PAGE = 0, ALIGN(4)
   .switch          : > FLASH_BANK0_SEC1,     PAGE = 0, ALIGN(4)
   .reset           : > RESET,     PAGE = 0, TYPE = DSECT /* not used, */

   .stack           : > RAMM1,     PAGE = 1

#if defined(__TI_EABI__)
   .init_array      : > FLASH_BANK0_SEC1,       PAGE = 0,       ALIGN(4)
   .bss             : > RAMLS5,       PAGE = 1
   .bss:output      : > RAMLS3,       PAGE = 0
   .bss:cio         : > RAMLS0,       PAGE = 0
   .data            : > RAMLS5,       PAGE = 1
   .sysmem          : > RAMLS5,       PAGE = 1
   /* Initalized sections go in Flash */
   .const           : > FLASH_BANK0_SEC1,       PAGE = 0,       ALIGN(4)
#else
   .pinit           : > FLASH_BANK0_SEC1,       PAGE = 0,       ALIGN(4)
   .ebss            : > RAMLS5,       PAGE = 1
   .esysmem         : > RAMLS5,       PAGE = 1
   .cio             : > RAMLS0,       PAGE = 0
   .econst          : > FLASH_BANK0_SEC4,    PAGE = 0, ALIGN(4)
#endif

   ramgs0           : > RAMGS0,    PAGE = 1
   ramgs1           : > RAMGS1,    PAGE = 1

    Communication : > RAMGS1
	Bootloader 	  : > RAMGS2


#if defined(__TI_EABI__)
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC1,
                      RUN = RAMGS0,
                      LOAD_START(RamfuncsLoadStart),
                      LOAD_SIZE(RamfuncsLoadSize),
                      LOAD_END(RamfuncsLoadEnd),
                      RUN_START(RamfuncsRunStart),
                      RUN_SIZE(RamfuncsRunSize),
                      RUN_END(RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)
#else
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC1,
                      RUN = RAMLS0,
                      LOAD_START(_RamfuncsLoadStart),
                      LOAD_SIZE(_RamfuncsLoadSize),
                      LOAD_END(_RamfuncsLoadEnd),
                      RUN_START(_RamfuncsRunStart),
                      RUN_SIZE(_RamfuncsRunSize),
                      RUN_END(_RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)
#endif

}

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

和app code 的 .cmd档案

MEMORY
{
PAGE 0 :
   /* BEGIN is used for the "boot to Flash" bootloader mode   */

   BEGIN           	: origin = 0x085000, length = 0x000002
   //FLASH_BANK0_APP  : origin = 0x085002, length = 0x002FFE
   RAMM0           	: origin = 0x0000F6, length = 0x00030A

   RAMLS0          	: origin = 0x008000, length = 0x000800
   RAMLS1          	: origin = 0x008800, length = 0x000800
   RAMLS2      		: origin = 0x009000, length = 0x000800
   RAMLS3      		: origin = 0x009800, length = 0x000800
   RAMLS4      		: origin = 0x00A000, length = 0x000800
   //RESET           	: origin = 0x3FFFC0, length = 0x000002

   /* Flash sectors */
   /* BANK 0 */
   //FLASH_BANK0_SEC0  : origin = 0x080002, length = 0x000FFE	/* bootloader use */
   //FLASH_BANK0_SEC1  : origin = 0x081000, length = 0x001000	/* bootloader use */
   //FLASH_BANK0_SEC2  : origin = 0x082000, length = 0x001000	/* bootloader use */
   //FLASH_BANK0_SEC3  : origin = 0x083000, length = 0x001000	/* bootloader use */
   //FLASH_BANK0_SEC4  : origin = 0x084000, length = 0x001000	/* bootloader use */
   FLASH_BANK0_SEC5  : origin = 0x085002, length = 0x00FFE	/* on-chip Flash */
   FLASH_BANK0_SEC6  : origin = 0x086000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC7  : origin = 0x087000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC8  : origin = 0x088000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC9  : origin = 0x089000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC10 : origin = 0x08A000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC11 : origin = 0x08B000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC12 : origin = 0x08C000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC13 : origin = 0x08D000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC14 : origin = 0x08E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK0_SEC15 : origin = 0x08F000, length = 0x001000	/* on-chip Flash */

   /* BANK 1 */
   FLASH_BANK1_SEC0  : origin = 0x090000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC1  : origin = 0x091000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC2  : origin = 0x092000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC3  : origin = 0x093000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC4  : origin = 0x094000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC5  : origin = 0x095000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC6  : origin = 0x096000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC7  : origin = 0x097000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC8  : origin = 0x098000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC9  : origin = 0x099000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC10 : origin = 0x09A000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC11 : origin = 0x09B000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC12 : origin = 0x09C000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC13 : origin = 0x09D000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC14 : origin = 0x09E000, length = 0x001000	/* on-chip Flash */
   FLASH_BANK1_SEC15 : origin = 0x09F000, length = 0x000FF0	/* on-chip Flash */

//   FLASH_BANK1_SEC15_RSVD : origin = 0x09FFF0, length = 0x000010  /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */

PAGE 1 :

   BOOT_RSVD       : origin = 0x000002, length = 0x0000F1     /* Part of M0, BOOT rom will use this for stack */
   RAMM1           : origin = 0x000400, length = 0x0003F8     /* on-chip RAM block M1 */
//   RAMM1_RSVD      : origin = 0x0007F8, length = 0x000008     /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */

   RAMLS5      : origin = 0x00A800, length = 0x000800
   RAMLS6      : origin = 0x00B000, length = 0x000800
   RAMLS7      : origin = 0x00B800, length = 0x000800

   RAMGS0      : origin = 0x00C000, length = 0x002000
   RAMGS1      : origin = 0x00E000, length = 0x002000
   RAMGS2      : origin = 0x010000, length = 0x002000
   RAMGS3      : origin = 0x012000, length = 0x001FF8
//   RAMGS3_RSVD : origin = 0x013FF8, length = 0x000008     /* Reserve and do not use for code as per the errata advisory "Memory: Prefetching Beyond Valid Memory" */
}


SECTIONS
{
   codestart        : > BEGIN,     PAGE = 0, ALIGN(4)
   .text            : >>FLASH_BANK0_SEC6 | FLASH_BANK0_SEC7 | FLASH_BANK0_SEC8 ,   PAGE = 0, ALIGN(4)
   .cinit           : > FLASH_BANK0_SEC8,     PAGE = 0, ALIGN(4)
   .switch          : > FLASH_BANK0_SEC8,     PAGE = 0, ALIGN(4)
   //.reset           : > RESET,     PAGE = 0, TYPE = DSECT /* not used, */

   .stack           : > RAMM1,     PAGE = 1

#if defined(__TI_EABI__)
   .init_array      : > FLASH_BANK0_SEC5,       PAGE = 0,       ALIGN(4)
   .bss             : > RAMLS5,       PAGE = 1
   .bss:output      : > RAMLS3,       PAGE = 0
   .bss:cio         : > RAMLS0,       PAGE = 0
   .data            : > RAMLS5,       PAGE = 1
   .sysmem          : > RAMLS5,       PAGE = 1
   /* Initalized sections go in Flash */
   .const           : > FLASH_BANK0_SEC8,       PAGE = 0,       ALIGN(4)
#else
   .pinit           : > FLASH_BANK0_SEC5,       PAGE = 0,       ALIGN(4)
   .ebss            : > RAMLS5,       PAGE = 1
   .esysmem         : > RAMLS5,       PAGE = 1
   .cio             : > RAMLS0,       PAGE = 0
   .econst          : > FLASH_BANK0_SEC8,    PAGE = 0, ALIGN(4)
#endif

   ramgs0           : > RAMGS0,    PAGE = 1
   ramgs1           : > RAMGS1,    PAGE = 1

 
#if defined(__TI_EABI__) 
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC5,
                      RUN = RAMLS0,
                      LOAD_START(RamfuncsLoadStart),
                      LOAD_SIZE(RamfuncsLoadSize),
                      LOAD_END(RamfuncsLoadEnd),
                      RUN_START(RamfuncsRunStart),
                      RUN_SIZE(RamfuncsRunSize),
                      RUN_END(RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)
#else					  
   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC5,
                      RUN = RAMLS0,
                      LOAD_START(_RamfuncsLoadStart),
                      LOAD_SIZE(_RamfuncsLoadSize),
                      LOAD_END(_RamfuncsLoadEnd),
                      RUN_START(_RamfuncsRunStart),
                      RUN_SIZE(_RamfuncsRunSize),
                      RUN_END(_RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)
#endif

}

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


谢谢！