TDA4VM: How to use Uniflash easeing eMMC flash ?

Gibbs Shih

Part Number: TDA4VM
Other Parts Discussed in Thread: UNIFLASH

Hi, Expert :

I am try to erase eMMC flash (16GB) on TDA4 EVB board, and I reference command for "uniflash"

Usage:

    dslite.bat --mode processors -c <COM_Port> -f <Path_to_the_file_to_be_transfered> -d <Device_Type> -i <Image_Type> -e <erase_length> -o <Offset>

dslite.bat -c COM10 -e 7c0000 -d 4 -o 0

My question is :
1.  what's unit for "-e", Is it means how many bytes in HEX? for example, 16GB eMMC = 17179869184 bytes =  0x400000000 (HEX)
so, I should give this command‬  " dslite.bat -c COM10 -e 400000000 -d 4 -o 0"  to erase, Am i right?

2. "-o <Offset>" means start address for eMMC, if I want to erase all, I should give " -o 0", Am I right?

Many Thanks

over 5 years ago

0 Vishal Mahaveer over 5 years ago

TI__Mastermind 33410 points

Hi Gibbs,

I think Uniflash only supports emmc operation on boot0 RAW partition and not the user partition (UDA).
I will check internally and confirm if this is the case.

Regards,
Vishal

0 Gibbs Shih over 5 years ago in reply to Vishal Mahaveer

Intellectual 760 points

Hi, Vishal :

So I also try to remove partition under U-BOOT, it seems not erase successful, because I can still boot from eMMC

my steps as below :

1. boot from sd-card, enter u-boot prompt.

2. mmc list

3. mmc dev 0 --> because eMMC is "0"

4. mmc erase 0 2000000 --> erase 16GB eMMC

is something wrong ?

Many Thanks : )

Gibbs

0 Vishal Mahaveer over 5 years ago in reply to Gibbs Shih

TI__Mastermind 33410 points

Hi Gibbs,

Where are the bootloader binaries flashed? the boot0 partition or userdata region?

The u-boot command "mmc dev 0" chooses eMMC userdata region.
To choose boot0 partition, use command "mmc dev 0 1".

Regards,
Vishal

0 Gibbs Shih over 5 years ago in reply to Vishal Mahaveer

Intellectual 760 points

Hi, Vishal :

my point is "try to erase boot0 partition in eMMC"

eMMC boot0 partition includes : tiboot3.bin, tispl.bin, u-boot.img, sysfw.itb

How to use "uniflash tools" erasing all partition ? (boot partition + rootfs partition)

or How to use "u-boot" erasing boot partition ?

I try some command in u-boot, it doesn't work, command as below :

1. mmc dev 0 1 (should be swap in boot partition)

2. mmc read ${loadaddr} 0x7fffffff 1 (Find out how many blocks that one actualy has)

3. mmc erase 0 0x4000

any suggesstion?

Many Thanks

Gibbs

0 Karan Saxena over 5 years ago in reply to Gibbs Shih

TI__Guru* 77914 points

Hi Gibbs,

I tried UNIFLASH to delete the eMMC and it worked for me. Can you please try that?

Please follow the below steps: (Note this is to erase the 8MB boot0 partition)

0. Download UNIFLASH from - https://www.ti.com/tool/UNIFLASH

Documentation available - http://downloads.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/pdk_jacinto_07_00_00/docs/userguide/board/uniflash.html#getting-started-with-uniflash

1. Connect the MCU UART (2nd instance out of the 2) - this is J43 on the EVM. Lets consider this COM7 (if it is windows) for the reference commands.

2. Change the boot switch setting for UART boot mode.

SW8: 0000_0000

SW9: 0111_0000

3. Navigate to the downloaded UNIFLASH directory. And run the below commands:

# This will send the flash programmer over UART and then send the sysfw
dslite.bat --mode processors -c COM7 -f C:\ti\uniflash_5.3.1\processors\FlashWriter\j721e_evm\uart_j721e_evm_flash_programmer_release.tiimage -i 0

# This will erase the eMMC, here size is in Bytes (in HEX)
dslite.bat --mode processors -c COM7 -d 4 -e 7c0000

I see the attached logs: /cfs-file/__key/communityserver-discussions-components-files/791/erase_5F00_emmc.log

Note: these instructions are for Windows, but same will work on linux - see the UNIFLASH documentation (http://downloads.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/latest/exports/docs/pdk_jacinto_07_00_00/docs/userguide/board/uniflash.html#getting-started-with-uniflash ) - the change will be only to the COMX -> /dev/ttyUSBY and the dslite.bat to dslite.sh.

Please let me know if this works for you.

Regards,

Karan

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TDA4VM: How to use Uniflash easeing eMMC flash ?