On Tue, Jul 7, 2015 at 10:10 AM, Tim M <[email protected]> wrote:
> I finally got a FTDI cable and attached it to my new BBB. I get the
> following when I attempt to boot from the microSD card:
>
> U-Boot 2014.04-00015-gb4422bd (Apr 22 2014 - 13:24:29)
>
> I2C:   ready
> DRAM:  512 MiB
> NAND:  0 MiB
> MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
> *** Warning - readenv() failed, using default environment
>
> Net:   <ethaddr> not set. Validating first E-fuse MAC
> cpsw, usb_ether
> Hit any key to stop autoboot:  0
> gpio: pin 53 (gpio 53) value is 1
> mmc0 is current device
> gpio: pin 54 (gpio 54) value is 1
> SD/MMC found on device 0
> reading uEnv.txt
> 313 bytes read in 5 ms (60.5 KiB/s)
> gpio: pin 55 (gpio 55) value is 1
> Loaded environment from uEnv.txt
> Importing environment from mmc ...
> Checking if uenvcmd is set ...
> gpio: pin 56 (gpio 56) value is 1
> Running uenvcmd ...
>
> uenvcmd was not defined in uEnv.txt ...
> gpio: pin 56 (gpio 56) value is 0
> gpio: pin 55 (gpio 55) value is 0
> gpio: pin 54 (gpio 54) value is 0
> mmc1(part 0) is current device
> gpio: pin 54 (gpio 54) value is 1
> SD/MMC found on device 1
> reading uEnv.txt
> 1430 bytes read in 6 ms (232.4 KiB/s)
> gpio: pin 55 (gpio 55) value is 1
> Loaded environment from uEnv.txt
> Importing environment from mmc ...
> Checking if uenvcmd is set ...
> gpio: pin 56 (gpio 56) value is 1
> Running uenvcmd ...
> ** File not found zImage **
> ** File not found initrd.img **
> ** File not found /dtbs/am335x-boneblack.dtb **
> Bad Linux ARM zImage magic!
>
> uenvcmd was not defined in uEnv.txt ...
> Booting from nand ...
>
> no devices available
>
> no devices available
> Bad Linux ARM zImage magic!
>
> This seems to indicate the zImage is bad on the microSD. However, I tried
> this microSD card in two other BBB's that I have, and they both boot just
> fine from this microSD. And, I took the microSD card from one of those BBB's
> (a known good card), put it in my new BBB, and it won't boot.
>
> So I think my new BBB is defective. Do you guys agree?

It's not "defective", it just has a later version of u-boot... Either,
hold down the boot button to boot with the microSD card, erase the
bootloader in the eMMC or fix your uEnv.txt script..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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