iMX53 QSB Boot Problem

Discussion created by ALAN SCHOTT on Nov 22, 2011
Latest reply on Nov 23, 2011 by Remi Lorriaux

Somewhere along the way I lost the ability to boot the QSB with a current LTIB build.  The issue seems to be associated with the 'ttymxc0' and the uart driver since it stalls on this initialization line during a boot cycle.  The QSB will boot correctly with the original QSB Linux SD card and I have compared this boot listing to the non-working listing without any clues.  Any thoughts are appreciated.


The console output is as follows:


CPU:   Freescale i.MX53 family 2.0V at 1000 MHz
mx53 pll1: 1000MHz
mx53 pll2: 400MHz
mx53 pll3: 216MHz
mx53 pll4: 455MHz
ipg clock     : 66666666Hz
ipg per clock : 33333333Hz
uart clock    : 21600000Hz
cspi clock    : 54000000Hz
ahb clock     : 133333333Hz
axi_a clock   : 400000000Hz
axi_b clock   : 200000000Hz
emi_slow clock: 133333333Hz
ddr clock     : 400000000Hz
esdhc1 clock  : 80000000Hz
esdhc2 clock  : 80000000Hz
esdhc3 clock  : 80000000Hz
esdhc4 clock  : 80000000Hz
nfc clock     : 26666666Hz
Board: MX53-LOCO 1.0
Boot Reason: [POR]
Boot Device: SD
I2C:   ready
DRAM:   1 GB
In:    serial
Out:   serial
Err:   serial
Net:   got MAC address from IIM: 00:04:9f:01:b3:60
Hit any key to stop autoboot:  0

MMC read: dev # 0, block # 2048, count 6144 partition # 0 ...
6144 blocks read: OK
## Booting kernel from Legacy Image at 70800000 ...
   Image Name:   Linux-
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2823760 Bytes =  2.7 MB
   Load Address: 70008000
   Entry Point:  70008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK

Starting kernel ...

Linux version (root@cct-ThinkPad-T410) (gcc version 4.4.4
 (4.4.4_09.06.2010) ) #12 PREEMPT Tue Nov 22 11:18:00 MST 2011
CPU: ARMv7 Processor [412fc085] revision 5 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: Freescale MX53 LOCO Board
Memory policy: ECC disabled, Data cache writeback
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 250880
Kernel command line: console=ttymxc0,115200 video=mxcdi1fb:GBR24,XGA di1_primary
 tve root=/dev/mmcblk0p1 rw rootwait
PID hash table entries: 4096 (order: 2, 16384 bytes)
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 480MB 512MB = 992MB total
Memory: 998596k/998596k available, 17212k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    DMA     : 0xf9e00000 - 0xffe00000   (  96 MB)
    vmalloc : 0xe0800000 - 0xf4000000   ( 312 MB)
    lowmem  : 0x80000000 - 0xe0000000   (1536 MB)
    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
    modules : 0x7f000000 - 0x7fe00000   (  14 MB)
      .init : 0x80008000 - 0x80032000   ( 168 kB)
      .text : 0x80032000 - 0x807a5000   (7628 kB)
      .data : 0x807c0000 - 0x808125a0   ( 330 kB)
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
        RCU-based detection of stalled CPUs is disabled.
        Verbose stalled-CPUs detection is disabled.
MXC GPIO hardware
MXC IRQ initialized
MXC_Early serial console at MMIO 0x53fbc000 (options '115200')
bootconsole [ttymxc0] enabled
Console: colour dummy device 80x30
Calibrating delay loop... 999.42 BogoMIPS (lpj=4997120)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
regulator: core version 0.5
NET: Registered protocol family 16
i.MX IRAM pool: 128 KB@0xe0840000
CPU is i.MX53 Revision 2.0
MXC DMA API initialized
IMX usb wakeup probe
IMX usb wakeup probe
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
da9052_i2c_is_connected - i2c read success....
regulator: DA9052_LDO1: 600 <--> 1800 mV at 1300 mV normal
regulator: DA9052_LDO2: 600 <--> 1800 mV at 1300 mV normal
regulator: DA9052_LDO3: 1725 <--> 3300 mV at 3300 mV normal
regulator: DA9052_LDO4: 1725 <--> 3300 mV at 2775 mV normal
regulator: DA9052_LDO5: 1200 <--> 3600 mV at 1300 mV normal
regulator: DA9052_LDO6: 1200 <--> 3600 mV at 1300 mV normal
regulator: DA9052_LDO7: 1200 <--> 3600 mV at 2750 mV normal
regulator: DA9052_LDO8: 1200 <--> 3600 mV at 1800 mV normal
regulator: DA9052_LDO9: 1250 <--> 3650 mV at 1500 mV normal
regulator: DA9052_LDO10: 1200 <--> 3600 mV at 1300 mV normal
regulator: DA9052_BUCK_CORE: 500 <--> 2075 mV at 1200 mV normal
regulator: DA9052_BUCK_PRO: 500 <--> 2075 mV at 1350 mV normal
regulator: DA9052_BUCK_MEM: 925 <--> 2500 mV at 1500 mV normal
regulator: DA9052_BUCK_PERI: 1800 <--> 3600 mV at 3600 mV normal
DA9053 chip ID reg read=0xa3
BB version probed
IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)
Bluetooth: Core ver 2.15
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Switching to clocksource mxc_timer1
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
UDP hash table entries: 512 (order: 1, 8192 bytes)
UDP-Lite hash table entries: 512 (order: 1, 8192 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
LPMode driver module loaded
Static Power Management for Freescale i.MX5
PM driver module loaded
sdram autogating driver module loaded
Bus freq driver module loaded
DI1 is primary
DVFS driver module loaded
i.MXC CPU frequency driver
DVFS PER driver module loaded
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 1950
alg: No test for stdrng (krng)
cryptodev: driver loaded.
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
regulator: get() with no identifier
By setting, SII driver will not be enabled
By setting, LDB driver will not be enabled
mxc_ipu mxc_ipu: Channel already disabled 9
mxc_ipu mxc_ipu: Channel already uninitialized 9
Console: switching to colour frame buffer device 100x30
mxc_ipu mxc_ipu: Channel already disabled 7
mxc_ipu mxc_ipu: Channel already uninitialized 7
mxc_ipu mxc_ipu: Channel already disabled 10
mxc_ipu mxc_ipu: Channel already uninitialized 10
Serial: MXC Internal UART driver
mxcintuart.0: ttymxc0 at MMIO 0x53fbc000 (irq 2€€€Làî`ü ÈÀ €ÌÀ        ======= stalls here???