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Compiler/TMS320DM8148: DM8148 EVM issue with booting from SD card

vector p1

Prodigy 180 points

Part Number: TMS320DM8148

Tool/software: TI C/C++ Compiler

Hi,

I am using DM8148 EVM.

I want to boot DM8148 EVM using SD card. I have used mksd-ti814x.sh script to create sd card. So i checked MLO, u-boot.bin, uImage is available in boot partition.

I did boot mode settings as BTMODE[4:0] = 10111:

BTMODE4 = 1, BTMODE3 = 0, BTMODE2 = 1, BTMODE1 = 1, BTMODE0 = 1

I have inserted sd card and started board.

Still it is showing CCCCCC on serial port.

Please guide any changes i need to boot from SD Card.

BR

Vector

over 5 years ago

0 Dwarakesh Radhakrishnan over 5 years ago

Guru 13660 points

Hi Vector,

It says make sure other pins in S1 are off,

Did you make sure the same ?

:

Switch S1, S1[5:1] ==> 10111 , other pins should be 0 (i.e. OFF). This sets BTM[4:0] in SD boot mode
Switch SW2----> Depending on where ENV storage is required enable the appropriate switch.

0 vector p1 over 5 years ago in reply to Dwarakesh Radhakrishnan

Prodigy 180 points

Hi Dwarakesh,

Thanks for reply

I did same settings Switch S1, S1[5:1] ==> 10111 and rest of the pins in S1 are off,

What Switch SW2 settings should i do to boot DM8148EVM.

BR

Vector

0 Pavel Botev over 5 years ago in reply to vector p1

TI__Guru**** 170625 points

Vector,

Please follow below user guide:

ti-ezsdk_dm814x-evm_5_05_02_00/docs/DM814x_EZ_Software_Developers_Guide.pdf

6.6 How to create an SD card

In this user guide, we use script mksdboot.sh, also boot switch settings are explained.

Regards,
Pavel

0 Dwarakesh Radhakrishnan over 5 years ago in reply to vector p1

Guru 13660 points

SW2 comes later(when something boots and where to pick up the ENV for uboot), please check if the SDCard is flashed properly.

0 vector p1 over 5 years ago in reply to Pavel Botev

Prodigy 180 points

Hi Pavel,

Thanks for replly,

I did same settings what mentioned in DM814x_EZ_Software_Developers_Guide.pdf file.

Still it is showing CCCCC on serial port

BR

Vector

0 Pavel Botev over 5 years ago in reply to vector p1

TI__Guru**** 170625 points

Vector,

I can provide you below debug hints:

- check if mksdboot.sh script is executing successful. Check if you have MLO and u-boot images into your SD card

- try with another SD card

- Check again the boot switch settings. Refer to below user guide for full info regarding all EVM switch settings:

http://software-dl.ti.com/dsps/dsps_public_sw/ezsdk/latest/exports/DM814x_AM387x_EVM_Quick_start_guide.pdf

- attach JTAG emulator to the EVM and check register CONTROL_STATUS. Check below user guide for info:

http://processors.wiki.ti.com/index.php/AM335x_board_bringup_tips

Regards,
Pavel

0 vector p1 over 5 years ago in reply to Pavel Botev

Prodigy 180 points

Hi Pavel,

I checked everything still i am facing this issue.

Regards

Vector

0 Pavel Botev over 5 years ago in reply to vector p1

TI__Guru**** 170625 points

Vector,

What value you have in CONTROL_STATUS register?

Regards,
Pavel

0 vector p1 over 5 years ago in reply to Pavel Botev

Prodigy 180 points

Hi Pavel

I will check and inform you.

BR

Vector