Linux/AMIC110: AMIC110 Linux/u-Boot boot not booting from SPI

DHardes

Intellectual 280 points

Part Number: AMIC110

Tool/software: Linux

Hey everyone,

i'm currently working on a custom board based on the amic110 soc using u-boot and linux as bootloader and OS.

I'm able to boot u-boot and Linux from SD-Card aswell as from UART, but not from SPI flash.

I can write the files, and when i'm trying to read them they are bitwise identical.

The SPI Flash is identified correctly, and everything except the bootprocess is working fine

U-Boot SPL shows only the following Message:

SPL: Unsupported Boot Device!
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###

I've already tried several versions of u-boot, including old ones from TI that contain the am335x_evm_spiboot_defconfig, but no success whatsoever.

Any ideas?

Thanks in advance,

Dave

over 7 years ago

0 Krunal Bhargav34 over 7 years ago

TI__Mastermind 45065 points

Hello Dave,

I am wondering if you could please share the Uboot version you are using and the commands used to program the SPI flash.

Regards,
Krunal

0 DHardes over 7 years ago in reply to Krunal Bhargav34

Intellectual 280 points

Hello Krunal,

I've tried a variety of u-boot version, starting from 2019-06 each mayor Release down to 2018-01. I've also tried a few versions of the TI am335x Linux SDK, from december 2018 and the following versions.

I've ported the Board files to those versions, all of them werde showing the same problem: no SPI Boot.

The commands i'm using to flash u-boot into the spi flash are the following steps:

sf probe 0
sf erase 0 +80000

fatload mmc 0 ${loadaddr} MLO.byteswap
sf write ${loadaddr} 0 ${filesize}

fatload mmc 0 ${loadaddr} u-boot.img
sf write ${loadaddr} 0x20000 ${filesize}

As i've said, i'm able to read the files bitwise correct from the flash.

Regards,

Dave

0 Krunal Bhargav34 over 7 years ago in reply to DHardes

TI__Mastermind 45065 points

Hi Dave,

I am confirming with our developers on SPI boot support for AMIC110 and I will keep you posted on any updates.

Regards,
Krunal

0 Krunal Bhargav34 over 7 years ago in reply to Krunal Bhargav34

TI__Mastermind 45065 points

Hi Dave,

I apologize for the delayed response but I have confirmed that SPI flash boot does not work on ti-u-boot-2018.01. I have filed an internal ticket to investigate the issue but I was able to get SPI flash boot to work on the AM335 EVM and ICE board using ti-u-boot-2017.01.

Regards,
Krunal

0 DHardes over 7 years ago in reply to Krunal Bhargav34

Intellectual 280 points

Hi Krunal,

Thank you very much, that's the kind of answer i needed.

For the moment I'll try to use the mentioned release of ti-u-boot-2017.01. So with that internal ticket, are there any chances that SPI flash boot might be supported in the newer releases?

Regards,

Dave

0 Krunal Bhargav34 over 7 years ago in reply to DHardes

TI__Mastermind 45065 points

Hi Dave,

I have filed SPI boot into our system as a requirement and as of now, I do not have any confirmations on the plan for future releases.

Regards,
Krunal

0 DHardes over 7 years ago in reply to Krunal Bhargav34

Intellectual 280 points

Hi Krunal,

Thanks for your help and the information.

I've marked this issue as resolved, as your previous answer did provide a solution to my question.

Regards,

Dave

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Linux/AMIC110: AMIC110 Linux/u-Boot boot not booting from SPI