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Unable to get uboot debug console messages on beaglebone white Revision A6

Srini
Genius 5250 points


Dear TI E2E Community

Am trying to bringup the beaglebone white Revision A6, I have placed the MLO & u-boot.img in boot partition of SD card, am able to see the SPL boot messages but am unable to get the debug messages of u-boot & am using UART1 as the debug port

U-Boot SPL 2013.10-00189-g78d8ebd-dirty (May 05 2015 - 19:06:26)
START OFFFFFFFFFFFFFF set_mux_conf_regs in SPLLLLLLLL
ENDOFFFFFFFFFFFFFF set_mux_conf_regs in SPLLLLLLLL


Am using ti-sdk 7 u-boot

make am335x_evm_config ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-;
Configuring for am335x_evm - Board: am335x_evm, Options: SERIAL2,CONS_INDEX=2,NAND


Could you please let me know why am unable to get the u-boot messages onto the console

Kindly do the needful as early as possible

Awaiting for your replies

Many Thanks in advance,

  • 0
    TI__Guru**** 393215 points

    Beaglebone White debug port is UART0. If you are using the miniUSB debug connector P3, there is no way to route UART1 to this connector.

  • 0 in reply to Biser Gatchev-XID
    Genius 5250 points

    Thanks a lot for your quick info Biser,

    1. Could you please let me know how to do the physical connections of UART0 in beaglebone white Revision A6

    2. The necessary configuration file that needs to be used for building the u-boot (ti sdk 7) & validating to get the console messages


    Kindly do the needful as early as possible

    Awaiting for your replies

    Many Thanks in advance,

  • 0 in reply to Srini
    Genius 5250 points

    Or, Could you please let me know whether uart2 , can be used as debug port in beaglebone white rev a6???? which is available on expansion header p9


    Kindly do the needful as early as possible

    Awaiting for your replies

    Many Thanks in advance,

  • 0 in reply to Srini
    Genius 5250 points

    Dear TI E2E Community,

    COuld you please help me out how to get the serial console up & running with beaglebone white rev a6 with fully detailed steps , should I poweron the board with 5v adapter & connect the usb cable in mini usb connector??


    Kindly help me out with this as am stuck with this from morning

    Kindly do the needful as early as possible

    Awaiting for your replies

    Many Thanks in advance,

  • 0 in reply to Srini
    Genius 5250 points

    Sorry if this thread seems to be silly

    Could you please let me know is it possible atleast to get the console on uart2,ie., expansion header B17 & A17, in uboot 2014.07 (ti sdk 8) with SERIAL3,CONS_INDEX=3,EMMC_BOOT in beaglebone white rev a6, even I see that the pin mux configuration is also enabled

    static struct module_pin_mux uart2_pin_mux[] = {
    {OFFSET(spi0_sclk), (MODE(1) | PULLUP_EN | RXACTIVE)}, /* UART2_RXD */
    {OFFSET(spi0_d0), (MODE(1) | PULLUDEN)}, /* UART2_TXD */
    {-1},
    };

    Kindly help me out with this as am stuck with this from yesterday

    Kindly do the needful as early as possible

    Awaiting for your replies

    Many Thanks in advance,

  • 0 in reply to Srini
    TI__Genius 15510 points

    There are configurations for different UARTs in u-boot. If you

    make am335x_evm_uart2_config

    make

    You should have a console on UART2.

    Steve K.