[yocto] BBB doesn't boot

Gary Thomas gary at mlbassoc.com
Mon Apr 14 04:44:20 PDT 2014


On 2014-04-14 05:38, Stanacar, StefanX wrote:
> 
> 
> 
> On Mon, 2014-04-14 at 10:35 +0000, Stanacar, StefanX wrote:
>> Hi Gary,
>>
>> On Sun, 2014-04-13 at 03:12 -0600, Gary Thomas wrote:
>>> I just tried building (core-image-sato) for my BeagleBoneBlack
>>> using the latest Poky/Yocto master:
>>>
>>> Build Configuration:
>>> BB_VERSION        = "1.23.0"
>>> BUILD_SYS         = "i686-linux"
>>> NATIVELSBSTRING   = "Fedora-13"
>>> TARGET_SYS        = "arm-poky-linux-gnueabi"
>>> MACHINE           = "beaglebone"
>>> DISTRO            = "poky"
>>> DISTRO_VERSION    = "1.6+snapshot-20140411"
>>> TUNE_FEATURES     = "armv7a vfp neon callconvention-hard cortexa8"
>>> TARGET_FPU        = "vfp-neon"
>>> meta
>>> meta-yocto
>>> meta-yocto-bsp    = "master:863cc7483f5ee43189537940de8ee5c0964d24cc"
>>>
>>> This built the kernel using SRCREV 928d7b2dda
>>>
>>> I followed the bring-up instructions from README.hadware and the
>>> boot failed to even start the kernel.  Here's what I see:
>>>
>>> =============================== boot log =========================================
>>> U-Boot 2013.07 (Apr 11 2014 - 15:03:04)
>>>
>>> I2C:   ready
>>> DRAM:  512 MiB
>>> WARNING: Caches not enabled
>>> NAND:  0 MiB
>>> MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
>>> *** Warning - readenv() failed, using default environment
>>>
>>> musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
>>> musb-hdrc: MHDRC RTL version 2.0
>>> musb-hdrc: setup fifo_mode 4
>>> musb-hdrc: 28/31 max ep, 16384/16384 memory
>>> USB Peripheral mode controller at 47401000 using PIO, IRQ 0
>>> musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, HB-ISO Rx, HB-ISO Tx, SoftConn)
>>> musb-hdrc: MHDRC RTL version 2.0
>>> musb-hdrc: setup fifo_mode 4
>>> musb-hdrc: 28/31 max ep, 16384/16384 memory
>>> USB Host mode controller at 47401800 using PIO, IRQ 0
>>> Net:   <ethaddr> not set. Validating first E-fuse MAC
>>> Phy not found
>>> PHY reset timed out
>>> cpsw, usb_ether
>>> Hit any key to stop autoboot:  0
>>> mmc0 is current device
>>> SD/MMC found on device 0
>>> reading uEnv.txt
>>> ** Unable to read file uEnv.txt **
>>> 4981688 bytes read in 613 ms (7.7 MiB/s)
>>> 29192 bytes read in 46 ms (619.1 KiB/s)
>>> Booting from mmc ...
>>> ## Booting kernel from Legacy Image at 80200000 ...
>>>    Image Name:   Linux-3.14.0-yocto-standard
>>>    Image Type:   ARM Linux Kernel Image (uncompressed)
>>>    Data Size:    4981624 Bytes = 4.8 MiB
>>>    Load Address: 80008000
>>>    Entry Point:  80008000
>>>    Verifying Checksum ... OK
>>> ## Flattened Device Tree blob at 80f80000
>>>    Booting using the fdt blob at 0x80f80000
>>>    Loading Kernel Image ... OK
>>>    Using Device Tree in place at 80f80000, end 80f8a207
>>>
>>> Starting kernel ...
>>> ==================================================================================
>>>
>>> Any ideas what I've done wrong?
>>>
>>
>> This is strange because last week I booted myself a BBB.
>> This actually looks like the serial doesn't output, perhaps the kernel
>> does boot. I wonder if console is right for the kernel cmdline.
>> On Friday I built and booted from
>> master:db80f796e78746014a0f9497638e5c6fd2953ef0 which is a bit earlier
>> that what you have but basically the same thing (updates for kernel
>> which should fix things, I've tested with SRCREV_meta_pn-linux-yocto =
>> "${AUTOREV}" those before they entered in master because I didn't had
>> HDMI output on my master commit).
>>
>> I'm gonna rebuild from daisy tip and see what happens.
>>
> 
> I just did a clean build from daisy and it worked fine...
> Could you try again? And perhaps -ccleansstate for linux-yocto? I'm
> thinking that somehow it didn't picked up the new console= that changed
> in the machine definition.

I'll try daisy, but my build/test was clean from the mentioned master rev.

I checked the console setup in U-Boot:
  console=ttyO0,115200n8
which I think is correct.

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------



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