Reg Linux-2.6.27 hang

[linux newbie]

One reason for junk char's is that your console baud rate is not
matching in user space initialization. After "Freeing init memory"
init is called which is in busybox and /etc/inittab is called. so
check the baud rate

On Fri, Nov 6, 2009 at 1:24 AM, Wan ZongShun <mcuos.com at gmail.com> wrote:
> Hi Prabha,
>
> Please pay attention to the EABI configure option.
>
> 2009/11/2 Prabha J <prabha.j at tcs.com>:
>>
>> Hi ,
>>
>> we are porting linux 2.6.27 on imx27 based platform. we did all the platform
>> dependent changes .
>>
>> With this linux is booting till a point and stopping there ..
>>
>> stopping at
>>
>> (VFS) Mounting file system
>> Freeing init memory
>>
>> While debugging through printk we could go till
>>
>> rest_init()  -> kernel _init() -> init_post() --->
>>
>> Going for opening initial console . .... using sys_open() .... After that no
>> prints .......
>>
>>
>> Can any body help us to go forward ?
>>
>> Thanks in advance ,
>> Prabha
>>
>>
>> Please see the following logs ..
>>
>> Launch LinuxUncompressing
>> Linux......................................................................
>> done, booting the kernel.
>> Linux version 2.6.28-arm2 (root at localhost.localdomain) (gcc version 4.1.1)
>> #75 Wed Oct 28 13:12:53 IST 2009
>> CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177
>> CPU: VIVT data cache, VIVT instruction cache
>> Machine: Freescale i.MX27ADS
>> Memory policy: ECC disabled, Data cache writeback
>> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
>> Kernel command line: root=/dev/ram rw mem=64M console=ttymxc0,115200
>> MXC GPIO hardware
>> MXC IRQ initialized
>> PID hash table entries: 256 (order: 8, 1024 bytes)
>>
>>  Clock input source is 26000000
>>
>>  After for loop
>>  test1
>>  CCM_PCCR1 = fe5aef88
>>  b4 spll_clk.disableConsole: 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: 60780KB available (1956K code, 252K data, 92K init)
>> Calibrating delay loop... 132.71 BogoMIPS (lpj=663552)
>> Security Framework initialized
>> Mount-cache hash table entries: 512
>> CPU: Testing write buffer coherency: ok
>> kernel thread started : M.V<5>SCSI subsystem initialized
>> checking if image is initramfs...it isn't (no cpio magic); looks like an
>> initrd
>> do_sys_open entry<6>Freeing initrd memory: 1792K
>> NetWinder Floating Point Emulator V0.97 (extended precision)
>> VFS: Disk quotas dquot_6.5.1
>> Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
>> JFS: nTxBlock = 489, nTxLock = 3914
>> msgmni has been set to 122
>> io scheduler noop registered
>> io scheduler anticipatory registered
>> io scheduler deadline registered
>> io scheduler cfq registered (default)
>> Serial: IMX driver
>> imx-uart.0: ttymxc0 at MMIO 0x1000a000 (irq = 20) is a IMX
>> console [ttymxc0] enabled
>> imx-uart.1: ttymxc1 at MMIO 0x1000b000 (irq = 19) is a IMX
>> imx-uart.2: ttymxc2 at MMIO 0x1000c000 (irq = 18) is a IMX
>> imx-uart.3: ttymxc3 at MMIO 0x1000d000 (irq = 17) is a IMX
>> imx-uart.4: ttymxc4 at MMIO 0x1001b000 (irq = 49) is a IMX
>> imx-uart.5: ttymxc5 at MMIO 0x1001c000 (irq = 48) is a IMX
>> brd: module loaded
>> loop: module loaded
>> st: Version 20080504, fixed bufsize 32768, s/g segs 256
>> Driver 'st' needs updating - please use bus_type methods
>> Driver 'sd' needs updating - please use bus_type methods
>> drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
>> do_sys_open entrydo_sys_open entry<5>RAMDISK: Compressed image found at
>> block 0
>> EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
>> VFS: Mounted root (ext2 filesystem).
>> Freeing init memory: 92K
>>
>>
>> After this some junk characters are coming like ....
>>
>> ��֍�&#531488;0^ޝ��r�'���ϊ��r:�������:��M� ��D�d�z ?��
>> Τ��8V�`�Т���V잊]nn]^ｸ�m8m��^� �m� E��N��8��6���:]���
>>
>>
>>
>>
>>
>>
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