not coming prompt in 2.6.33.6 kernel

[Wan ZongShun]

2010/7/28 Ben Dooks <ben-linux at fluff.org>:
> On Wed, Jul 28, 2010 at 08:51:06AM +0530, nitin vishnoi wrote:
>> Hi
>>
>> I am porting the 2.6.33.6 kernel,which i took from kernel.org.I am trying to
>> port it on samsung-s3c2451 board.
>> But i am not getting the shell prompt,due to getting the following error.Any
>> body can tell due to what this error i am getting?
>>
>> Starting kernel ...
>>
>>
>> Uncompressing Linux... done, booting the kernel.
>> Linux version 2.6.33.6 (root at ubntu-desktop) (gcc version 4.2.2) #12 Mon Jul
>> 26 18:39:19 IST 2010
>> CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
>> CPU: VIVT data cache, VIVT instruction cache
>> Machine: SMDK2450
>> Ignoring unrecognised tag 0x00000000
>> Memory policy: ECC disabled, Data cache writeback
>> CPU S3C2450 EVT3 (id 0x32450003)
>> SPA   epll  80200102  Mpll  80640061   clkdiv0 557
>> S3C24XX Clocks, (c) 2004 Simtec Electronics
>> S3C2450: mpll on 800.000 MHz, cpu 400.000 MHz, mem 133.333 MHz, pclk 66.666
>> MHz
>> S3C2450: epll on 96.000 MHz, usb-bus 48.000 MHz
>> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
>> Kernel command line: root=/dev/ram0 initrd=0x30800000,16M ramdisk=32768
>> init=/bin/sh console=ttySAC3,115200 mem=64M
>> PID hash table entries: 256 (order: -2, 1024 bytes)
>> 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: 45432KB available (2588K code, 271K data, 116K init, 0K highmem)
>> Hierarchical RCU implementation.
>> NR_IRQS:109
>> irq: clearing subpending status 02000006
>> irq: clearing subpending status 02000002
>> timer tcon=00000000, tcnt 28af, tcfg 00000f00,00000000, usec 00007ae2
>> Console: colour dummy device 80x30
>> console [ttySAC3] enabled
>> Calibrating delay loop... 398.95 BogoMIPS (lpj=997376)
>> Mount-cache hash table entries: 512
>> CPU: Testing write buffer coherency: ok
>> NET: Registered protocol family 16
>> whats up blady
>> hello
>> entered machine init
>> S3C Power Management, Copyright 2004 Simtec Electronics
>> S3C2450: Initialising architecture
>> SPA s3c2450_init
>> S3C2450: IRQ Support
>> bio: create slab <bio-0> at 0
>> SCSI subsystem initialized
>> NET: Registered protocol family 2
>> 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
>> UDP hash table entries: 256 (order: 0, 4096 bytes)
>> UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
>> NET: Registered protocol family 1
>> Trying to unpack rootfs image as initramfs...
>> rootfs image is not initramfs (no cpio magic); looks like an initrd
>> Freeing initrd memory: 16384K
>> NetWinder Floating Point Emulator V0.97 (double precision)
>> JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
>> ROMFS MTD (C) 2007 Red Hat, Inc.
>> msgmni has been set to 120
>> alg: No test for stdrng (krng)
>> Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
>> io scheduler noop registered
>> io scheduler deadline registered
>> io scheduler cfq registered (default)
>> brd: module loaded
>> loop: module loaded
>> Uniform Multi-Platform E-IDE driver
>> ide-gd driver 1.18
>> ide-cd driver 5.00
>> PPP generic driver version 2.4.2
>> PPP Deflate Compression module registered
>> PPP BSD Compression module registered
>> PPP MPPE Compression module registered
>> NET: Registered protocol family 24
>> SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
>> CSLIP: code copyright 1989 Regents of the University of California.
>> mice: PS/2 mouse device common for all mice
>> TCP cubic registered
>> RAMDISK: gzip image found at block 0
>> EXT2-fs (ram0): warning: maximal mount count reached, running e2fsck is
>> recommended
>> VFS: Mounted root (ext2 filesystem) on device 1:0.
>> Freeing init memory: 116K
>> Warning: unable to open an initial console.
>> Kernel panic - not syncing: Attempted to kill init!
>> [<c002b900>] (unwind_backtrace+0x0/0xe0) from [<c003fe9c>]
>> (panic+0x40/0x12c)
>> [<c003fe9c>] (panic+0x40/0x12c) from [<c0042cac>] (do_exit+0x58/0x57c)
>> [<c0042cac>] (do_exit+0x58/0x57c) from [<c0043254>]
>> (do_group_exit+0x84/0xb8)
>> [<c0043254>] (do_group_exit+0x84/0xb8) from [<c004329c>]
>> (sys_exit_group+0x14/0x20)
>> [<c004329c>] (sys_exit_group+0x14/0x20) from [<c0025e80>]
>> (ret_fast_syscall+0x0/0x28)
>
> looks like whatever you're trying to run as init doesn't have /dev/console
> available.
Ben, I make sure there is /dev/console in his rootfs directory.
nitin vishnoi, do you confirm you need the ext to mount the ramdisk?

maybe you can decrease 'ramdisk=32768' to 'ramdisk=8192'.

>there seems to be no evidence of UARTs being added in the
> setup, are they being registered with the serial driver properly?
>
> --
> Ben
>
> Q:      What's a light-year?
> A:      One-third less calories than a regular year.
>
>



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