Re: [Gumstix-users] Potentially Bad Board

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Check your serial cable.   I had the same probem until I discovered my 
cable was bad.

Lawrence

John Van Enk wrote:
> Hello,
>
> I unpacked my second Starter Pack (network, serial, xm4) today, 
> plugged it in, and watched it get half way through the boot process 
> before throwing all sorts of junk over the serial line. Once it 
> finishes the primary boot sequence (doesn't take long) it shows what's 
> obviously a login prompt, but won't take any keyboard input. It also 
> constantly spams the login prompt until i get this message:
>
> INIT: Id "S" respawning too fast: disabled for 5 minutes
>
> The login prompt ceases spamming for a while, but then resumes with a 
> lot of garbage characters mixed in.
>
> I tried rebooting and catching the U-Boot environment to reflash the 
> board, but it appears as though the serial port isn't catching the 
> characters I'm typing (I can't get U-Boot to stop the boot process).
>
> The following is the relevant parts of my boot sequence:
>
> ============================================
>
> U-Boot 1.2.0 (May 10 2008 - 21:17:19) - PXA270@400 MHz - 1604
>                                                             
> *** Welcome to Gumstix ***
>                          
> DRAM:  64 MB
> Flash: 16 MB
> Using default environment
>                         
> Hit any key to stop autoboot:  0
> Instruction Cache is ON         
> Copying kernel to 0xa2000000 from 0x00f00000 (length 0x00100000)...done
> ## Booting image at a2000000 ...                                      
>    Image Name:   Angstrom/2.6.21/gumstix-custom-v
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    1030044 Bytes = 1005.9 kB           
>    Load Address: a0008000                
>    Entry Point:  a0008000
> OK                      
>  
> Starting kernel ...
>                   
> Linux version 2.6.21 (otto@otto) (gcc version 4.1.2) #1 Mon May 12 
> 10:24:19 PDT 2008
> CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE), cr=0000397f
> Machine: The Gumstix Platform
> Memory policy: ECC disabled, Data cache writeback
> Run Mode clock: 208.00MHz (*16)
> Turbo Mode clock: 416.00MHz (*2.0, active)
> Memory clock: 104.00MHz (/2)
> System bus clock: 104.00MHz
> CPU0: D VIVT undefined 5 cache
> CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
> CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
> Built 1 zonelists.  Total pages: 16256
> Kernel command line: console=ttyS0,115200n8 root=1f01 rootfstype=jffs2 
> reboot=cold,hard
> PID hash table entries: 256 (order: 8, 1024 bytes)
> Console: colour dummy device 80x30
> Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
> Memory: 64MB = 64MB total
> Memory: 62720KB available (1808K code, 196K data, 148K init)
> Mount-cache hash table entries: 512
> CPU: Testing write buffer coherency: ok
> NET: Registered protocol family 16
> NET: Registered protocol family 2
> Time: pxa_timer clocksource has been installed.
> IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
> TCP established hash table entries: 2048 (order: 2, 16384 bytes)
> TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
> TCP: Hash tables configured (established 2048 bind 2048)
> TCP reno registered
> JFFS2 version 2.2. (NAND) (SUMMARY)  (C) 2001-2006 Red Hat, Inc.
> io scheduler noop registered
> io scheduler cfq registered (default)
> Console: switching to colour frame buffer device 80x24
> pxa2xx-uart.0: ttyS0 at MMIO 0x40100000 (irq = 22) is a FFUART
> pxa2xx-uart.1: ttyS1 at MMIO 0x40200000 (irq = 21) is a BTUART
> pxa2xx-uart.2: ttyS2 at MMIO 0x40700000 (irq = 20) is a STUART
> Probing Gumstix Flash ROM at physical address 0x00000000 (16-bit 
> bankwidth)
> Gumstix Flash ROM: Found 1 x16 devices at 0x0 in 16-bit bank
>  Intel/Sharp Extended Query Table at 0x010A
>  Intel/Sharp Extended Query Table at 0x010A
>  Intel/Sharp Extended Query Table at 0x010A
>  Intel/Sharp Extended Query Table at 0x010A
>  Intel/Sharp Extended Query Table at 0x010A
> Using buffer write method
> cfi_cmdset_0001: Erase suspend on write enabled
> Using static partitions on Gumstix Flash ROM
> Creating 3 MTD partitions on "Gumstix Flash ROM":
> 0x00000000-0x00040000 : "Bootloader"
> 0x00040000-0x00f00000 : "RootFS"
> 0x00f00000-0x01000000 : "Kernel"
> TCP cubic registered
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> XScale iWMMXt coprocessor detected.
> VFS: Mounted root (jffs2 filesystem).
> Freeing init memory: 148K
> ^N^L^H^F^F^LN<^L^H^^^L^X^@^L^L^H^L^X\^H^H^H^@^B^H^@^
>
> [snipped a lot of garbage like the last line]
> [once in a while, legible stuff comes through miked into a lot of 
> garbage. Some examples:
> - INIT: version 2.86 booting
> - INIT: Entering runlevel: 5
> - /etc/rc5.d/S10dropbear: /etc/rc5.d/S10dropbear: 29: cannot open 
> /proc/mounts: No such file
> - start-stop-daemon: nothing in /proc - not mounted
> - Removing stale PID file /var/run/dbus/pid]
>
> ^A ^@^L^L^F^L0^B^L^X^L^@^P^@^H ^H^H ^@^H^@@^P^H^@(
> OpenEmbedded Linux (none) ttyS0
>
> Angstrom 2007.9-test-20080512 (none) ttyS0
>
> ============================================
>
> At this point, the login prompt spams every second or so until init 
> puts the breaks on it.
>
> It seems like /proc hasn't been mounted, and that something goofy with 
> my serial connection is going on. Has any one found a good way to fix 
> a problem like this? It seems that if I could convince U-Boot to talk 
> to me, I'd be able to fix this with a serial port flash.
>
> Any advice would be greatly appreciated.
>
> /jve
>
> -- 
> /jve
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