TMS320F28075: general question linker cmd BEGIN RESET

HS FAE Germany

Mastermind 32400 points

Part Number: TMS320F28075

Hello,
in the linker cmd file BEGIN and RESET is used.

BEGIN : origin = 0x080000, length = 0x000002
RESET : origin = 0x3FFFC0, length = 0x000002

in the SECTIONS I see

.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */

Is RESET needed or in case of an reset is jumps automatic to BEGIN?

Regards, Holger

over 4 years ago

0 Veena Kamath over 4 years ago

TI__Mastermind 32655 points

Hi Hogler,

In fact the bootROM takes care of the reset routine and finally branches to the BEGIN address. so, applicatio only needs to populate the BEGIN location.

Regards,

Veena

0 HS FAE Germany over 4 years ago in reply to Veena Kamath

TI__Mastermind 32400 points

Hello Veena,
does the BEGIN adress alway be 0x80000?

The question is related to a bootloader application. Customer planned following:

Applikation BEGIN 0x080000
Bootloader BEGIN 0x0B8000

But it should start with the bootloader and then jump to the application. Can the C2000 jump into the bootloader 0xB8000 after reset? Or does it jump alway into 0x80000 after reset?

Regards, Holger

+1 Veena Kamath over 4 years ago in reply to HS FAE Germany

TI__Mastermind 32655 points

Hi Holger,

0x00080000 is the address where bootROM code branches to once it is completed (in case of Flash boot mode). You can refer to the BootROM chapter for more details.

Regards,

Veena

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TMS320F28075: general question linker cmd BEGIN RESET