Part Number: TMS320F280049C
Other Parts Discussed in Thread: C2000WARE
Tool/software: Code Composer Studio
I am trying to write the boot options to OTP from within my project. However I am not able to get it working. I have got it working through the on chip flash, but want it in the code.
I have added the following code to my project:
#pragma DATA_SECTION (Z1_GPREG_value, "b0_dcsm_otp_z1_gpreg") volatile const uint64_t Z1_GPREG_value = 0x5AFFFFFF5AFFFFFF; #pragma DATA_SECTION (Z1_BOOTCTRL_value, "b0_dcsm_otp_z1_bootctrl") volatile const uint64_t Z1_BOOTCTRL_value = 0x0000000000000003;
I am using the default .cmd file from c2000ware as below:
/* this linker command file is to be included if user wants to use the DCSM
* feature on the device DCSM means Dual Zone Code Security Module. This
* linker command file works as an addendum ot the already existing Flash/RAM
* linker command file that the project has.
* The sections in the *_ZoneSelectBlock.asm source file is linked as per the
* commands given in the file NOTE - please note fill=0xFFFF, this helps if
* users include this file in the project by mistake and doesn't provide the
* needed proper *_ZoneSelectBlock.asm sources.
* Please refer to the Blinky DCSM example for proper usage of this.
*
* Once users are confident t`hat they want to program the passwords in OTP, the
* DSECT section type can be removed.
*
*/
MEMORY
{
PAGE 0 : /* Program Memory */
/* BANK0 */
/* B0 Z1 OTP. LinkPointers */
B0_DCSM_OTP_Z1_LINKPOINTER : origin = 0x78000, length = 0x00000C
/* B0 Z1 OTP. GPREG1/GPREG2 */
B0_DCSM_OTP_Z1_GPREG : origin = 0x7800C, length = 0x000004
/* B0 Z1 OTP. PSWDLOCK/RESERVED */
B0_DCSM_OTP_Z1_PSWDLOCK : origin = 0x78010, length = 0x000004
/* B0 Z1 OTP. CRCLOCK/RESERVED */
B0_DCSM_OTP_Z1_CRCLOCK : origin = 0x78014, length = 0x000004
/* B0 Z1 OTP. GPREG3/BOOTCTRL */
B0_DCSM_OTP_Z1_BOOTCTRL : origin = 0x7801C, length = 0x000004
/* DCSM Z1 Zone Select Contents (!!Movable!!) */
/* B0 Z1 OTP. Z1 password locations / Flash and RAM partitioning */
B0_DCSM_ZSEL_Z1_P0 : origin = 0x78020, length = 0x000010
/* B0 Z2 OTP. LinkPointers */
B0_DCSM_OTP_Z2_LINKPOINTER : origin = 0x78200, length = 0x00000C
/* B0 Z2 OTP. GPREG1/GPREG2 */
B0_DCSM_OTP_Z2_GPREG : origin = 0x7820C, length = 0x000004
/* B0 Z2 OTP. PSWDLOCK/RESERVED */
B0_DCSM_OTP_Z2_PSWDLOCK : origin = 0x78210, length = 0x000004
/* B0 Z2 OTP. CRCLOCK/RESERVED */
B0_DCSM_OTP_Z2_CRCLOCK : origin = 0x78214, length = 0x000004
/* B0 Z2 OTP. GPREG3/BOOTCTRL */
B0_DCSM_OTP_Z2_BOOTCTRL : origin = 0x7821C, length = 0x000004
/* DCSM Z1 Zone Select Contents (!!Movable!!) */
/* B0 Z2 OTP. Z2 password locations / Flash and RAM partitioning */
B0_DCSM_ZSEL_Z2_P0 : origin = 0x78220, length = 0x000010
/* BANK1 */
/* B1 Z1 OTP. LinkPointers */
B1_DCSM_OTP_Z1_LINKPOINTER : origin = 0x78400, length = 0x00000C
/* DCSM B1 Z1 Zone Select Contents (!!Movable!!) */
/* B1 Z1 OTP. Flash partitioning */
B1_DCSM_ZSEL_Z1_P0 : origin = 0x78420, length = 0x000010
/* B1 Z2 OTP. LinkPointers */
B1_DCSM_OTP_Z2_LINKPOINTER : origin = 0x78600, length = 0x00000C
/* DCSM B1 Z1 Zone Select Contents (!!Movable!!) */
/* B1 Z2 OTP. Flash partitioning */
B1_DCSM_ZSEL_Z2_P0 : origin = 0x78620, length = 0x000010
}
SECTIONS
{
b0_dcsm_otp_z1_linkpointer : > B0_DCSM_OTP_Z1_LINKPOINTER PAGE = 0, type = DSECT
b0_dcsm_otp_z1_gpreg : > B0_DCSM_OTP_Z1_GPREG PAGE = 0, type = DSECT
b0_dcsm_otp_z1_pswdlock : > B0_DCSM_OTP_Z1_PSWDLOCK PAGE = 0, type = DSECT
b0_dcsm_otp_z1_crclock : > B0_DCSM_OTP_Z1_CRCLOCK PAGE = 0, type = DSECT
b0_dcsm_otp_z1_bootctrl : > B0_DCSM_OTP_Z1_BOOTCTRL PAGE = 0, type = DSECT
b0_dcsm_zsel_z1 : > B0_DCSM_ZSEL_Z1_P0 PAGE = 0, type = DSECT
b0_dcsm_otp_z2_linkpointer : > B0_DCSM_OTP_Z2_LINKPOINTER PAGE = 0, type = DSECT
b0_dcsm_otp_z2_gpreg : > B0_DCSM_OTP_Z2_GPREG PAGE = 0, type = DSECT
b0_dcsm_otp_z2_pswdlock : > B0_DCSM_OTP_Z2_PSWDLOCK PAGE = 0, type = DSECT
b0_dcsm_otp_z2_crclock : > B0_DCSM_OTP_Z2_CRCLOCK PAGE = 0, type = DSECT
b0_dcsm_otp_z2_bootctrl : > B0_DCSM_OTP_Z2_BOOTCTRL PAGE = 0, type = DSECT
b0_dcsm_zsel_z2 : > B0_DCSM_ZSEL_Z2_P0 PAGE = 0, type = DSECT
b1_dcsm_otp_z1_linkpointer : > B1_DCSM_OTP_Z1_LINKPOINTER PAGE = 0, type = DSECT
b1_dcsm_zsel_z1 : > B1_DCSM_ZSEL_Z1_P0 PAGE = 0, type = DSECT
b1_dcsm_otp_z2_linkpointer : > B1_DCSM_OTP_Z2_LINKPOINTER PAGE = 0, type = DSECT
b1_dcsm_zsel_z2 : > B1_DCSM_ZSEL_Z2_P0 PAGE = 0, type = DSECT
}
/*
//===========================================================================
// End of file.
//===========================================================================
*/
It seems the linker is not keeping the data since it isnt used in the code so I tried to add the lines:
#pragma RETAIN(Z1_GPREG_value) #pragma RETAIN(Z1_BOOTCTRL_value)
But it still doesn't work.
I am not sure what I am doing wrong.
