Other Parts Discussed in Thread: CONTROLSUITE
I am having a hard time getting the F28M35x to boot from flash. Previously it was apparently working because it was able to boot from power-on. In the meantime I set up the RAM build configuration so that the debugger now starts properly. I also tried to set up ramfuncs. Now when I switch to the FLASH build configuration, it won’t boot from flash.
I am aware about:
SPRA958L (still tracking down possible causes suggested by this document)
SW1 on the controlcard is set to 0000.
Some questions you may be able to answer:
- Is the value for code_start correct for the device (I am using 0x0013FFF0) ?
- Do you have access to a F28M35x project that boots from flash? I didn’t find one in controlsuite. Maybe blinky does this, and I have somehow managed to break it.
Here are the related elements that I have been looking at:
***********************************************************************
*Function : codestart section
*
*Description : Branch to code starting point
***********************************************************************
.sect "codestart"
code_start:
LB _c_int00 ; Branch to start of boot.asm in RTS library
; end codestart section
From the linker .cmd file:
MEMORY
{
PAGE 1: /* Data Memory */
.
.
.
BEGIN_FLASH : origin = 0x13FFF0, length = 0x000002
FLASH_EXE_ONLY : origin = 0x13FFF2, length = 0x000002 /* FLASH execution only locations */
ECSL_PWL : origin = 0x13FFF4, length = 0x000004 /* FLASH ECSL password locations */
CSM_PWL : origin = 0x13FFF8, length = 0x000008 /* FLASH CSM password locations. */
}
.
.
.
SECTIONS
{
.
.
.
codestart : > BEGIN_FLASH PAGE = 1
/*** Code Security Module Register Structures ***/
FlashExeOnlyFile : > FLASH_EXE_ONLY, PAGE = 1
EcslPwlFile : > ECSL_PWL, PAGE = 1
CsmPwlFile : > CSM_PWL, PAGE = 1
ramfuncs : LOAD = FLASH,
RUN = RAML0,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
RUN_START(_RamfuncsRunStart),
PAGE = 0
}
When I reset in the debugger, it goes to 0x3FF7ED, and sets OBJMODE, clears AMODE, then eventually ends up at 3ff6b7: 7621 IDLE
I am using CCS version 5.4.0
Thanks for the help!!!
