Boot from flash problem.

Linker file contents for above post:

Map file is attached.
MEMORY
{
PAGE 0 : /* Program Memory */

L03SARAM : origin = 0x008000, length = 0x002000 /* on-chip RAM block L0-L3 */
OTP : origin = 0x3D7800, length = 0x000400 /* on-chip OTP */
FLASH : origin = 0x3D8000, length = 0x01FF80 /* on-chip FLASH */
CSM_RSVD : origin = 0x3F7F80, length = 0x000076 /* Program with all 0x0000 when CSM is in use. */
BEGIN : origin = 0x3F7FF6, length = 0x000002 /* Used for "boot to Flash" bootloader mode. */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008 /* CSM password locations in FLASH */

FPUTABLES : origin = 0x3FD860, length = 0x0006A0 /* FPU Tables in Boot ROM */
IQTABLES : origin = 0x3FDF00, length = 0x000B50 /* IQ Math Tables in Boot ROM */
IQTABLES2 : origin = 0x3FEA50, length = 0x00008C /* IQ Math Tables in Boot ROM */
IQTABLES3 : origin = 0x3FEADC, length = 0x0000AA /* IQ Math Tables in Boot ROM */

ROM : origin = 0x3FF3B0, length = 0x000C10 /* Boot ROM */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM */

PAGE 1 : /* Data Memory */

M01SARAM : origin = 0x000000, length = 0x000800 /* on-chip RAM block M0, M1 */
PIEVECT : origin = 0xD00, length = 0x100
L46SARAM : origin = 0x00A000, length = 0x006000 /* on-chip RAM block L4-L6 */
L78SARAM : origin = 0x010000, length = 0x004000 /* on-chip RAM block L7, L8 */
}

/*
* Allocate sections to memory blocks.
* Note:
* codestart user defined section in DSP28_CodeStartBranch.asm
* used to redirect code execution when booting to flash
*
* ramfuncs user defined section to store functions that will be
* copied from Flash into RAM
*/

SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASH PAGE = 0
.pinit : > FLASH PAGE = 0
.text : > FLASH PAGE = 0
codestart : > BEGIN PAGE = 0
ramfuncs : LOAD = FLASH PAGE = 0,
RUN = L03SARAM PAGE = 0,
LOAD_START(_RamfuncsLoadStart),
LOAD_SIZE(_RamfuncsLoadSize),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart)

csmpasswds : > CSM_PWL PAGE = 0
csm_rsvd : > CSM_RSVD PAGE = 0

/* Allocate uninitalized data sections: */
.stack : > M01SARAM | L46SARAM PAGE = 1
.ebss : > M01SARAM | L46SARAM PAGE = 1
.esysmem : > L78SARAM | L46SARAM | M01SARAM PAGE = 1
.cio : > L78SARAM | L46SARAM | M01SARAM PAGE = 1

/* Initalized sections go in Flash */
/* For SDFlash to program these, they must be allocated to page 0 */
.econst : > FLASH PAGE = 0
.switch : > FLASH PAGE = 0
.args : > FLASH PAGE = 0

/* Allocate IQ math areas: */
IQmath : > FLASH PAGE = 0 /* Math Code */
IQmathTables : > IQTABLES PAGE = 0, TYPE = NOLOAD

/* Allocate FPU math areas: */
FPUmathTables : > FPUTABLES PAGE = 0, TYPE = NOLOAD

/*
* Uncomment the section below if calling the IQNexp() or IQexp()
* functions from the IQMath.lib library in order to utilize the
* relevant IQ Math table in Boot ROM (This saves space and Boot ROM
* is 1 wait-state). If this section is not uncommented, IQmathTables2
* will be loaded into other memory (SARAM, Flash, etc.) and will take
* up space, but 0 wait-state is possible.
*/
/*
IQmathTables2 : > IQTABLES2 PAGE = 0, TYPE = NOLOAD
{
IQmath.lib<IQNexpTable.obj> (IQmathTablesRam)
}
*/

/*
* Uncomment the section below if calling the IQNasin() or IQasin()
* functions from the IQMath.lib library in order to utilize the
* relevant IQ Math table in Boot ROM (This saves space and Boot ROM
* is 1 wait-state). If this section is not uncommented, IQmathTables2
* will be loaded into other memory (SARAM, Flash, etc.) and will take
* up space, but 0 wait-state is possible.
*/
/*
IQmathTables3 : > IQTABLES3 PAGE = 0, TYPE = NOLOAD
{
IQmath.lib<IQNasinTable.obj> (IQmathTablesRam)
}
*/
.reset : > FLASH, PAGE = 0, TYPE = DSECT
vectors : > VECTORS, PAGE = 0, TYPE = DSECT
}

5488.Map.txt

Hello,
Is it possible to get an "example TI-RTOS/sysbios boot from flash" project for F2806x device? This would be very helpful.
Couldn't locate one.

Hi AAH,

Selecting the "Enable boot from FLASH" option in the C28x Boot module should be enough. Can you share your application's map file ? I would like to confirm that the Boot_entry function is part of the final executable and is being placed at the right address.

Best,

Ashish

Hello Ashish,

Map file is attached in my previous message. Attaching it again. By the way, this boards is already in production with DSP/BIOS 5. 2110.Map.txt

Please check.

Thank you.

regards

Hi AAH,

It looks like the Boot_entry function is being installed correctly. I am guessing you cannot share your full project, but, can you create a smaller project that demonstrates this issue ?

As per your earlier request, I have attached an example for F28069 control stick that boots from flash. The example blinks the red LED on the board.

Best,

Ashish

6254.controlSTICK_F28069_Boot_Example01.zip

Hello Ashish,

I could not run your project as it is in sysbios.

However,  I have attached a TI-RTOS clock project taken from 'Resource Explorer'.

For this application:

1. Linker file has been replaced by the one in our application.

2. "Boot from flash" is enabled in TI-RTOS.

Exactly the same result is obtained:

1. If you debug with "Load program" execution jumps to _c_int00.

2. If you debug with "Load symbols" execution jumps to 0x3ff75c. On giving a  "CPU reset" +"restart", execution goes to main().

Screen shots are in attached file.

regards

7041.ti_post.docx

0081.clock_TMS320F28069.zip

Hi AAH,

I will try your example and get back.

AAH said:

I could not run your project as it is in sysbios.

Were you unable to build the example or were able to build it but not able to run it ? 

Best,

Ashish

Hello Ashish,

Error message can be seen in the doc ti_post.docx in my previous post.

regards

AAH

Hello Ashish,
The "Load symbols" debug option led me to believe that boot sequence was wrong.

Actually, the problem was resolved after tweaking the linker cmd file.

Thanks

AAH