AM263x MCU+ SDK  08.03.01
SBL JTAG Uniflash

Introduction

This is a flash-writer example which uses JTAG to write files or erase flash and thereby removes UART dependency. Although it is not strictly a bootloader, it uses flash APIs to be able to flash binaries to the OSPI/QSPI flash. This example performs the following operations.

  • Flash the received file at the given offset
  • Verify if the data in the received file is present at the given offset
  • Erase the entire flash.

Once the example starts running it displays a following menu.

1: Erase Complete Flash
2: Write File to Flash and Verify
3: Verify file in Flash
x: Exit
Enter Choice:

After the file is written, verified or flash is erased, an acknowledgment is sent back to the console and the loop continues. This example is more or less like a flashing server, and will terminate until user does not enter 'x'.

Supported Combinations

Parameter Value
CPU + OS r5fss0-0 nortos
Toolchain ti-arm-clang
Boards am263x-cc, am263x-lp
Example folder examples/drivers/boot/sbl_jtag_uniflash

Steps to Run the Example

See Also

BOOTLOADER

Sample Output

==================
JTAG Uniflash Menu
==================
1: Erase Complete Flash
2: Write File to Flash and Verify
3: Verify file in Flash
x: Exit
Enter Choice: 1
[FLASH WRITER] Erasing complete flash ...
[FLASH WRITER] This can take few minutes, so please wait ...
[FLASH WRITER] Erasing complete flash ... SUCCESS !!!
==================
JTAG Uniflash Menu
==================
1: Erase Complete Flash
2: Write File to Flash and Verify
3: Verify file in Flash
x: Exit
Enter Choice: 2
Enter file name along with path to write or verify : C:\ti\mcu_plus_sdk_08_02_00\tools\boot\sbl_prebuilt\am243x-evm\sbl_null.release.tiimage
Enter flash offset (in hex format) : 0x0
Enter below command in CCS scripting console to load the file data to memory.
AFTER the file load is done, enter '1' to continue ...
loadRaw(0x80000020, 0, "C:/ti/mcu_plus_sdk_08_02_00/tools/boot/sbl_prebuilt/am243x-evm/sbl_null.release.tiimage", 32, false);
1
[FLASH WRITER] Flashing success!!...
==================
JTAG Uniflash Menu
==================
1: Erase Complete Flash
2: Write File to Flash and Verify
3: Verify file in Flash
x: Exit
Enter Choice: 3
Enter file name along with path to write or verify : C:/ti/mcu_plus_sdk_08_02_00/tools/boot/sbl_prebuilt/am243x-evm/sbl_null.release.tiimage
Enter flash offset (in hex format) : 0x0
Enter below command in CCS scripting console to load the file data to memory.
AFTER the file load is done, enter '1' to continue ...
loadRaw(0x80000020, 0, "C:/ti/mcu_plus_sdk_08_02_00/tools/boot/sbl_prebuilt/am243x-evm/sbl_null.release.tiimage", 32, false);
1
[FLASH WRITER] Verifying success!!...
==================
JTAG Uniflash Menu
==================
1: Erase Complete Flash
2: Write File to Flash and Verify
3: Verify file in Flash
x: Exit
Enter Choice: x
[FLASH WRITER] Application exited !!!
All tests have passed!!