TMS320F280049C: shift Interrupt vector table and jump to application

Harihara Kailasa Raman S

Part Number: TMS320F280049C

Tool/software:

Hi there, I am working on bootloader project and currently I have to shift the interrupt vector table and jump to application. I am using driverlib library function only and not device support. Could you please give me the steps so that i can shift the interrupt vector table and jump to my application. Currently my jump to App function is given below.

void JumpToApp(void) {
DINT;
Interrupt_disablePIE();

// Clear all interrupts
IER = 0x0000;
IFR = 0x0000;
// Copy application PIE vectors from flash to RAM
EALLOW;
memcpy((void *)&PieVectTable, (void *)0x86000, 256);
EDIS;

asm(" MOVW SP, #0x800");

// Jump to application entry point
asm(" LB #0x88000");
}

it shows post cinit() error after executing the jump function and the IVT is also not shifted. For further clarifications I can give my application code and its linker file as well. Thank you.

8 months ago

0 Delaney Woodward 8 months ago

TI__Mastermind 21500 points

Hi Harihara,

I am looping in the Bootloader expert. Please allow them 1-2 days to get back to you with a response.

Best Regards,

Delaney

0 Harihara Kailasa Raman S 8 months ago in reply to Delaney Woodward

Prodigy 30 points

Thank you.

0 Matt Kukucka 8 months ago in reply to Harihara Kailasa Raman S

TI__Genius 14000 points

Hello Harihara,

Please share the linker command file for the application and bootloader, that will help a lot with debugging.

Harihara Kailasa Raman S said:
// Copy application PIE vectors from flash to RAM
EALLOW;
memcpy((void *)&PieVectTable, (void *)0x86000, 256);
EDIS;

0x86000 is mapped to the flash. Do you mean 0x8600 in LS0 RAM?

Harihara Kailasa Raman S said:
it shows post cinit() error after executing the jump function

Does the application successfully branch to 0x88000? Is the application's codestart at that location? Can you also show a screenshot of the error in CCS?

Best,

Matt

0 Harihara Kailasa Raman S 8 months ago in reply to Matt Kukucka

Prodigy 30 points

i have modified my code now. My Jump to App function is

volatile struct PIE_VECT_TABLE PieVectTable __attribute__((location(0x000D00)));
typedef void (*AppEntryPoint)(void);
#define APP_ENTRY_ADDRESS 0x85000

void JumpToApp(void)
{
// Disable interrupts
DINT;
Interrupt_disablePIE();
IER = 0x0000;
IFR = 0x0000;

// Set SP to top of application stack (match what your app uses in linker)
asm(" MOV SP, #0x400"); // Match this with your .stack size and location

EALLOW;

// Optional: If your application uses a different PIE vector table, copy it
// Example: Assume the vector table is stored at 0x84000 in flash
memcpy((void *)&PieVectTable, (void *)0x84000, 256);

EDIS;

// Jump to C runtime entry point of application
AppEntryPoint app = (AppEntryPoint)(APP_ENTRY_ADDRESS);
app(); // Jump to _c_int00 (typically the app entry)
}

bootloader linker file is:

MEMORY
{
PAGE 0 :

RAMM0 : origin = 0x0000F5, length = 0x00030B
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

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
GROUP {
#endif
#endif

BEGIN : origin = 0x080000, length = 0x000002
FLASH_BANK0_SEC0: origin = 0x080002, length = 0x000FFE
FLASH_BANK0_SEC1: origin = 0x081000, length = 0x001000
FLASH_BANK0_SEC2: origin = 0x082000, length = 0x001000
FLASH_BANK0_SEC3: origin = 0x083000, length = 0x001000
FLASH_BANK0_SEC4: origin = 0x084000, length = 0x001000

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
} crc(_ccs_flash_checksum, algorithm=C28_CHECKSUM_16)
#endif
#endif

PAGE 1 :

BOOT_RSVD : origin = 0x000002, length = 0x0000F3
RAMM1 : origin = 0x000400, length = 0x000400
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 = 0x002000
PIE_VECT_TABLE : origin = 0x000D00, length = 0x000100
}

SECTIONS
{
codestart : > BEGIN, PAGE = 0, ALIGN(4)
.text : >> FLASH_BANK0_SEC1 | FLASH_BANK0_SEC2, PAGE = 0, ALIGN(4)
.cinit : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
.pinit : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
.switch : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
.reset : > RESET, PAGE = 0, TYPE = DSECT
PieVectTableFile : > PIE_VECT_TABLE, PAGE = 1
.stack : > RAMM1, PAGE = 1
.ebss : > RAMLS5, PAGE = 1
.esysmem : > RAMLS5, PAGE = 1
.econst : > FLASH_BANK0_SEC4, PAGE = 0, ALIGN(4)

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

.TI.ramfunc : {} LOAD = FLASH_BANK0_SEC1,
RUN = RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)

.TI.memcrc : type = COPY
}

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

application linker file is:

MEMORY
{
PAGE 0 :

/* PIE vectors in flash - matches JumpToApp() copy address (0x86000) */
PIE_VECTORS_FLASH : origin = 0x00084000, length = 0x00000100

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
GROUP {
#endif
#endif

/* Application entry at 0x88000 (matches JumpToApp LB address) */
BEGIN : origin = 0x085000, length = 0x000002
FLASH_BANK0_SEC5: origin = 0x085002, length = 0x000FFE
FLASH_BANK0_SEC6: origin = 0x086000, length = 0x001000
FLASH_BANK0_SEC7: origin = 0x087000, length = 0x001000
FLASH_BANK0_SEC8: origin = 0x088000, length = 0x001000
FLASH_BANK0_SEC9: origin = 0x089000, length = 0x001000
FLASH_BANK0_SEC10: origin = 0x08A000, length = 0x001000
FLASH_BANK0_SEC11: origin = 0x08B000, length = 0x001000
FLASH_BANK0_SEC12: origin = 0x08C000, length = 0x001000
FLASH_BANK0_SEC13: origin = 0x08D000, length = 0x001000
FLASH_BANK0_SEC14: origin = 0x08E000, length = 0x001000
FLASH_BANK0_SEC15: origin = 0x08F000, length = 0x001000

/* BANK 1 sections remain unchanged */
FLASH_BANK1_SEC0 : origin = 0x090000, length = 0x001000
FLASH_BANK1_SEC1 : origin = 0x091000, length = 0x001000
FLASH_BANK1_SEC2 : origin = 0x092000, length = 0x001000
FLASH_BANK1_SEC3 : origin = 0x093000, length = 0x001000
FLASH_BANK1_SEC4 : origin = 0x094000, length = 0x001000
FLASH_BANK1_SEC5 : origin = 0x095000, length = 0x001000
FLASH_BANK1_SEC6 : origin = 0x096000, length = 0x001000
FLASH_BANK1_SEC7 : origin = 0x097000, length = 0x001000
FLASH_BANK1_SEC8 : origin = 0x098000, length = 0x001000
FLASH_BANK1_SEC9 : origin = 0x099000, length = 0x001000
FLASH_BANK1_SEC10: origin = 0x09A000, length = 0x001000
FLASH_BANK1_SEC11: origin = 0x09B000, length = 0x001000
FLASH_BANK1_SEC12: origin = 0x09C000, length = 0x001000
FLASH_BANK1_SEC13: origin = 0x09D000, length = 0x001000
FLASH_BANK1_SEC14: origin = 0x09E000, length = 0x001000
FLASH_BANK1_SEC15: origin = 0x09F000, length = 0x000FF0
FLASH_BANK1_SEC15_DO_NOT_USE : origin = 0x09FFF0, length = 0x000010

#ifdef __TI_COMPILER_VERSION__
#if __TI_COMPILER_VERSION__ >= 20012000
} crc(_ccs_flash_checksum, algorithm=C28_CHECKSUM_16)
#endif
#endif

PAGE 1 :

SECTIONS
{
codestart : > BEGIN, PAGE = 0, ALIGN(4)

/* PIE vectors in flash - will be copied to RAM by JumpToApp() */
.pie_vectors_flash : > PIE_VECTORS_FLASH, PAGE = 0, ALIGN(256)

.text : >> FLASH_BANK0_SEC5 | FLASH_BANK0_SEC6 | FLASH_BANK0_SEC7, PAGE = 0, ALIGN(4)
.cinit : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
.pinit : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
.switch : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
.reset : > RESET, PAGE = 0, TYPE = DSECT

.stack : > RAMM1, PAGE = 1

.ebss : > RAMLS5, PAGE = 1
.esysmem : > RAMLS5, PAGE = 1
.econst : > FLASH_BANK0_SEC7, PAGE = 0, ALIGN(4)

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

.TI.ramfunc : LOAD = FLASH_BANK0_SEC5,
RUN = RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
RUN_SIZE(_RamfuncsRunSize),
RUN_END(_RamfuncsRunEnd),
PAGE = 0, ALIGN(4)

.TI.memcrc : type = COPY
}

also give me the steps to shift the interrupt Vector table.

0 Delaney Woodward 8 months ago in reply to Harihara Kailasa Raman S

TI__Mastermind 21500 points

Hi Harihara,

Can you explain why exactly you are trying to copy the PIE vector table in your bootloader application? Also, would you be able to attach your bootloader and linker cmd files as files instead of text, so it is easier for us to take a look through.

Best Regards,

Delaney

0 Harihara Kailasa Raman S 8 months ago in reply to Delaney Woodward

Prodigy 30 points

// BOOTLOADER LINKER FILE
MEMORY
{
PAGE 0 :

   RAMM0           : origin = 0x0000F5, length = 0x00030B
   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

#ifdef __TI_COMPILER_VERSION__
   #if __TI_COMPILER_VERSION__ >= 20012000
GROUP {
   #endif
#endif

   BEGIN           : origin = 0x080000, length = 0x000002
   FLASH_BANK0_SEC0: origin = 0x080002, length = 0x000FFE
   FLASH_BANK0_SEC1: origin = 0x081000, length = 0x001000
   FLASH_BANK0_SEC2: origin = 0x082000, length = 0x001000
   FLASH_BANK0_SEC3: origin = 0x083000, length = 0x001000
   FLASH_BANK0_SEC4: origin = 0x084000, length = 0x001000



#ifdef __TI_COMPILER_VERSION__
  #if __TI_COMPILER_VERSION__ >= 20012000
}  crc(_ccs_flash_checksum, algorithm=C28_CHECKSUM_16)
  #endif
#endif

PAGE 1 :

   BOOT_RSVD      : origin = 0x000002, length = 0x0000F3
   RAMM1          : origin = 0x000400, length = 0x000400
   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 = 0x002000
   PIE_VECT_TABLE : origin = 0x000D00, length = 0x000100
}

SECTIONS
{
   codestart     : > BEGIN,        PAGE = 0, ALIGN(4)
   .text         : >> FLASH_BANK0_SEC1 | FLASH_BANK0_SEC2, PAGE = 0, ALIGN(4)
   .cinit        : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
   .pinit        : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
   .switch       : > FLASH_BANK0_SEC1, PAGE = 0, ALIGN(4)
   .reset        : > RESET,        PAGE = 0, TYPE = DSECT
   PieVectTableFile : > PIE_VECT_TABLE, PAGE = 1
   .stack        : > RAMM1,        PAGE = 1
   .ebss         : > RAMLS5,       PAGE = 1
   .esysmem      : > RAMLS5,       PAGE = 1
   .econst       : > FLASH_BANK0_SEC4, PAGE = 0, ALIGN(4)

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

   .TI.ramfunc : {} LOAD = FLASH_BANK0_SEC1,
                      RUN = RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3,
                      LOAD_START(_RamfuncsLoadStart),
                      LOAD_SIZE(_RamfuncsLoadSize),
                      LOAD_END(_RamfuncsLoadEnd),
                      RUN_START(_RamfuncsRunStart),
                      RUN_SIZE(_RamfuncsRunSize),
                      RUN_END(_RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)

   .TI.memcrc   : type = COPY
}

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

// APPLICATION LINKER FILE

MEMORY
{
PAGE 0 :

   RAMM0            : origin = 0x0000F5, length = 0x00030B
   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


#ifdef __TI_COMPILER_VERSION__
   #if __TI_COMPILER_VERSION__ >= 20012000
GROUP {
   #endif
#endif

   /* Application entry at 0x88000 (matches JumpToApp LB address) */
   FLASH_BANK0_SEC3  : origin = 0x083000, length = 0x001000
   PIE_VECTORS_FLASH : origin = 0x00084000, length = 0x00001000
   BEGIN            : origin = 0x085000, length = 0x000002
   FLASH_BANK0_SEC5: origin = 0x085002, length = 0x000FFE
   FLASH_BANK0_SEC6: origin = 0x086000, length = 0x001000
   FLASH_BANK0_SEC7: origin = 0x087000, length = 0x001000
   FLASH_BANK0_SEC8: origin = 0x088000, length = 0x001000
   FLASH_BANK0_SEC9: origin = 0x089000, length = 0x001000
   FLASH_BANK0_SEC10: origin = 0x08A000, length = 0x001000
   FLASH_BANK0_SEC11: origin = 0x08B000, length = 0x001000
   FLASH_BANK0_SEC12: origin = 0x08C000, length = 0x001000
   FLASH_BANK0_SEC13: origin = 0x08D000, length = 0x001000
   FLASH_BANK0_SEC14: origin = 0x08E000, length = 0x001000
   FLASH_BANK0_SEC15: origin = 0x08F000, length = 0x001000

   /* BANK 1 sections remain unchanged */
   FLASH_BANK1_SEC0 : origin = 0x090000, length = 0x001000
   FLASH_BANK1_SEC1 : origin = 0x091000, length = 0x001000
   FLASH_BANK1_SEC2 : origin = 0x092000, length = 0x001000
   FLASH_BANK1_SEC3 : origin = 0x093000, length = 0x001000
   FLASH_BANK1_SEC4 : origin = 0x094000, length = 0x001000
   FLASH_BANK1_SEC5 : origin = 0x095000, length = 0x001000
   FLASH_BANK1_SEC6 : origin = 0x096000, length = 0x001000
   FLASH_BANK1_SEC7 : origin = 0x097000, length = 0x001000
   FLASH_BANK1_SEC8 : origin = 0x098000, length = 0x001000
   FLASH_BANK1_SEC9 : origin = 0x099000, length = 0x001000
   FLASH_BANK1_SEC10: origin = 0x09A000, length = 0x001000
   FLASH_BANK1_SEC11: origin = 0x09B000, length = 0x001000
   FLASH_BANK1_SEC12: origin = 0x09C000, length = 0x001000
   FLASH_BANK1_SEC13: origin = 0x09D000, length = 0x001000
   FLASH_BANK1_SEC14: origin = 0x09E000, length = 0x001000
   FLASH_BANK1_SEC15: origin = 0x09F000, length = 0x000FF0
   FLASH_BANK1_SEC15_DO_NOT_USE : origin = 0x09FFF0, length = 0x000010

#ifdef __TI_COMPILER_VERSION__
  #if __TI_COMPILER_VERSION__ >= 20012000
}  crc(_ccs_flash_checksum, algorithm=C28_CHECKSUM_16)
  #endif
#endif

PAGE 1 :

   BOOT_RSVD        : origin = 0x000002, length = 0x0000F3
   RAMM1            : origin = 0x000400, length = 0x000400
   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 = 0x002000
}

SECTIONS
{
   codestart        : > BEGIN,     PAGE = 0, ALIGN(4)

   /* PIE vectors in flash - will be copied to RAM by JumpToApp() */
   .pie_vectors_flash : > PIE_VECTORS_FLASH, PAGE = 0, ALIGN(256)

   .text            : >> FLASH_BANK0_SEC5 | FLASH_BANK0_SEC6 | FLASH_BANK0_SEC7, PAGE = 0, ALIGN(4)
   .cinit           : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
   .pinit           : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
   .switch          : > FLASH_BANK0_SEC5, PAGE = 0, ALIGN(4)
   .reset           : > RESET,     PAGE = 0, TYPE = DSECT

   /* Stack at 0x800 (matches JumpToApp SP setting) */
   .stack           : > RAMM1,     PAGE = 1

   .ebss            : > RAMLS5,    PAGE = 1
   .esysmem         : > RAMLS5,    PAGE = 1
   .econst          : > FLASH_BANK0_SEC7, PAGE = 0, ALIGN(4)

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

   .TI.ramfunc      : LOAD = FLASH_BANK0_SEC5,
                      RUN = RAMLS0 | RAMLS1 | RAMLS2 | RAMLS3,
                      LOAD_START(_RamfuncsLoadStart),
                      LOAD_SIZE(_RamfuncsLoadSize),
                      LOAD_END(_RamfuncsLoadEnd),
                      RUN_START(_RamfuncsRunStart),
                      RUN_SIZE(_RamfuncsRunSize),
                      RUN_END(_RamfuncsRunEnd),
                      PAGE = 0, ALIGN(4)

   .TI.memcrc       : type = COPY
}
// jump to app function in my booltoader file
typedef void (*AppEntryPoint)(void);
#define APP_ENTRY_ADDRESS  0x85000
void JumpToApp(void)
{
    DINT;
    Interrupt_disablePIE();
    IER = 0x0000;
    IFR = 0x0000;
    asm(" MOV SP, #0x400");
    AppEntryPoint app = (AppEntryPoint)(APP_ENTRY_ADDRESS);
    app();
}

I just tried shifting the IVT by copying the PIE vector table but I don't know how to shift or relocate the IVT. Could you please help me by providing the steps ASAP. I have attached my bootloader and application's linker command file along with the jump to app function where the IVT has to be relocated and this function resides in my bootloader's main.c file. Thank you.

0 Matt Kukucka 8 months ago in reply to Harihara Kailasa Raman S

TI__Genius 14000 points

Hi Harihara,

From the CPU core's PIE peripheral standpoint, I believe having two separate memory regions both mapped to the PIE CPU registers is not possible. Now, what is possible is to re-write out all the PIE vector addresses upon entering/exiting the bootloader, just like you would in the application code. But I don't believe they can be two separate register regions.

Please see these threads for more details:

Best,

Matt

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280049C: shift Interrupt vector table and jump to application