Linux/PROCESSOR-SDK-AM335X: U-boot problem

Yuri Oreshnikov

Part Number: PROCESSOR-SDK-AM335X
Other Parts Discussed in Thread: AM3359

Tool/software: Linux

Hi,

We have custom board on AM3359 processor like as Beaglebone. We used old SDK (04.09.00.01) and tested our board. We were working with our board at least 5 years. We want to use new SDK (05.03.00.07). Processor boots from SD-Card. Old u-boot (2013 0101 – psp 06.00.00.00) booting without errors and problems. We control booting process by console on UART0. New u-boot (2018.01+gitA) not booting and nothing (no one character transferred by UART0) wrote to console. We tried u-boot prebuild from old SDK and new SDK. Old version works fine, new version not working. We tried to build new u-boot themselves, but it's not worked too. How fix it?

over 6 years ago

0 Kemal R. Shakir over 6 years ago

TI__Guru 55345 points

Hello Yuri,

Please, see this thread and this post. Your custom board most probably doesn't contain an EEPROM and you need to hardcode its content in U-Boot.

Best regards,
Kemal

0 Yuri Oreshnikov over 6 years ago in reply to Kemal R. Shakir

Intellectual 260 points

Hi, we tried this patches, but MLO said nothing. I tried printf

        uart_soft_reset();
        preloader_console_init();
        printf("aaaaaaaaaaaaaaaa\n");

but I see nothing in console. ?

0 Kemal R. Shakir over 6 years ago in reply to Yuri Oreshnikov

TI__Guru 55345 points

What does the board prints if you use the prebuilt-images from SDK (04.09.00.01)?

0 Yuri Oreshnikov over 6 years ago in reply to Kemal R. Shakir

Intellectual 260 points

-Boot SPL 2013.01.01 (Jun 25 2013 - 16:42:52)
timed out in wait_for_pin: I2C_STAT=1000
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
Could not get board ID.
timed out in wait_for_bb: I2C_STAT=1000
Could not probe the EEPROM; something fundamentally wrong on the I2C bus.
timed out in wait_for_bb: I2C_STAT=1000
I2C read: I/O error
Could not read the EEPROM; something fundamentally wrong on the I2C bus.
timed out in wait_for_pin: I2C_STAT=0
I2C read: I/O error
Could not read the EEPROM; something fundamentally wrong on the I2C bus.
### ERROR ### Please RESET the board ###

0 Kemal R. Shakir over 6 years ago in reply to Yuri Oreshnikov

TI__Guru 55345 points

Can you archive and attach the U-Boot source code of the SDK (04.09.00.01)?

0 Yuri Oreshnikov over 6 years ago in reply to Kemal R. Shakir

Intellectual 260 points

u-boot-2013.01.01-psp06.00.00.00.tar.gz

0 Kemal R. Shakir over 6 years ago in reply to Yuri Oreshnikov

TI__Guru 55345 points

Can you try to boot your board with the attached images at this post?

0 Yuri Oreshnikov over 6 years ago in reply to Kemal R. Shakir

Intellectual 260 points

Hi. Thanks alot. Your images work well. I tried to build carefully base on your first answer with SDK config and compilator. And it work by UART and MMC.

void do_board_detect(void)
{
enable_i2c0_pin_mux();
#ifndef CONFIG_DM_I2C
i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
#endif
/* Comment these in ./board/ti/am335x/board.c*/
// if (ti_i2c_eeprom_am_get(CONFIG_EEPROM_BUS_ADDRESS,
// CONFIG_EEPROM_CHIP_ADDRESS))
// printf("ti_i2c_eeprom_init failed\n");
}

and

./board/ti/am335x/board.h

Board_is_evm_15_or_later returns 1, other board_is_xxx returns 0

Thank You so mutch.

Processors

Processors forum

Linux/PROCESSOR-SDK-AM335X: U-boot problem