Flash Management

1. Board Overview

• Board 96-A

  

• Board 96-B

  

2. Hardware Setting

2.1. Connecting UART0 (Program Flash via UART0 Interface)

UART0: Command Port (either CN10 or J8)

• Board 96-A

  

• Board 96-B

  

2.2. Connecting JTAG (Program Flash via JTAG/SWD Interface)

2.3. Connecting USB3.0 for 5V power supply

3. Program Flash via UART0 Interface

3.1. Flash programmer necessaries

1. Open command terminal for flash programmer execution

   Tool path: kl720_sdk\firmware\utils\flash_programmer\nand\flash_programmer.py

2. install Necessary python modules: kl720_sdk\firmware\utils\requirements.txt

3.2. Edit python verification setting

1. Check UART port number from device manager

2. Edit setup.py, search “COM_ID” and modify the ID to match your UART port number

   ex: COM_ID = 6 # COM6

   

3.3 Firmware Binary Generation (FW + MODELS)

Generate flash final bin file from other seperate bin files.

The script combines .bin files in "flash_bin" in predefined order.

Morever, the addressing is in 4KB alignment.

Command:

>> python3 bin_gen.py <options>

options argument:

-h, --help      Show this help message and exit

-p, --CPU_ONLY  SPL/SCPU/NCPU only

Output:

flash_image.bin

** The following bin files are must **

flash_bin
├── boot_spl.bin // bool spl bin file
├── fw_ncpu.bin // SCPU FW bin file (generated by Keil)
├── fw_scpu.bin // NCPU FW bin file (generated by Keil)
├── models_720.nef // model information(copied from kenron_plus/res/models/KL720)

3.4 Flash Chip Programming (FW + DATA)

>> python flash_programmer.py -a flash_image.bin

Please press RESET BTN while you are seeing “Please press reset button!!”

• Board 96-A

  

• Board 96-B

  

Afterwards, just wait until all progresses are finished (erase, program, verify)

Note: "flash_programmer.py -a" means to do flash chip erase + programming + verification

3.5 Flash Verification (optional)

>> python flash_programmer.py -v flash_image.bin

3.6 Flash Erase (optional)

>> python flash_programmer.py -e

3.7 Flash Partial Programming (optional)

>> python flash_programmer.py -i 0x00040000 -p fw_scpu.bin

Note: To program specific bin file to specific flash address "-i" means the flash index/address you would like to program "-p" means the FW code you would like to program

4. Program Flash via JTAG/SWD Interface

4.1. Jlink programmer necessaries

Connect JTAG/SWD and USB3.0 for 5V power.

4.2. Edit flash_prog.jlink device setting

1. Check your flash type: Winbond SPI Nand flash

2. Select a specific device based on flash manufacturer EX: device KL720-WB-NAND //Winbond Nand flash

3. Copy the bin file to kl720_sdk\firmware\utils\JLink_programmer\bin folder EX: flash_image.bin, boot_spl.bin, fw_scpu.bin, fw_ncpu.bin, fw_ncpu_dram.bin etc.

4.3. Double click "flash_prog.bat"

Afterwards, just wait until all progresses are finished (chip erase, program, verify)

4.4. Check programming result

Please ensure all the results are "O.K.", and enter "qc" to quit and close J-Link commander

4.5. Edit flash_prog_partial.jlink device setting(optional)

To program ncpu fw partially to specific flash address(sector erase, program, verify)

1. "flash_ncpu.jlink" loadbin command: Load *.bin file into target memory

   Syntax:

   loadbin <filename>, <addr>

   loadbin .\bin\fw_ncpu_dram.bin,0x000E0000

   loadbin .\bin\fw_ncpu.bin,0x001E0000

2. Double click “flash_ncpu.bat” and wait until all progresses are finished

3. Check programming result Please ensure the results is “O.K.”, and enter “qc” to quit and close J-Link commander EX: