On Thu, Dec 9, 2010 at 1:54 PM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote:
>> $ qemu-system-arm -M realview-pbx-a9 -kernel clfskernel-2.6.36 -hda
>> initrd-rootfs.img -append "console=ttyAMA0 root=/dev/hda1 ro mem=256M"
>> -m 1024 -nographic
>> ...
>> VFS: Cannot open root device "hda1" or unknown-block(0,0)
>> Please append a correct "root=" boot option; here are the available partitions:
>> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
>
> Yup, no partition are listed, this means that the kernel did not
> detect the disk. The required block device driver and filesystem must
> be built into the kernel (i.e. not as modules) or you will not be able
> to mount access it.
>
> In that case I am afraid the link I gave you will not be very helpful
> - you just need to enable to right device driver. Unless QEmu did not
> like your disk image, but in that case I guess it would have
> complained.
>
It is not complaining about the root disk image. I think I have tried
all of the block device drivers now :(
Here is the log
Uncompressing Linux... done, booting the kernel.
Linux version 2.6.36 (clfs@prasad-desktop) (gcc version 4.5.1 (GCC) )
#19 SMP PREEMPT Thu Dec 9 14:21:56 GMT 2010
CPU: ARMv7 Processor [410fc090] revision 0 (ARMv7), cr=10c03c7f
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: ARM-RealView PBX
Ignoring unrecognised tag 0x00000000
Memory policy: ECC disabled, Data cache writealloc
PERCPU: Embedded 6 pages/cpu @c064c000 s4032 r8192 d12352 u65536
pcpu-alloc: s4032 r8192 d12352 u65536 alloc=16*4096
pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
Kernel command line: console=ttyAMA0 root=/dev/hda1 ro mem=256M
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256MB = 256MB total
Memory: 255388k/255388k available, 6756k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.init : 0xc0008000 - 0xc002e000 ( 152 kB)
.text : 0xc002e000 - 0xc03ff000 (3908 kB)
.data : 0xc0400000 - 0xc04226e0 ( 138 kB)
Hierarchical RCU implementation.
RCU-based detection of stalled CPUs is disabled.
Verbose stalled-CPUs detection is disabled.
NR_IRQS:128
Console: colour dummy device 80x30
Calibrating delay loop... 393.21 BogoMIPS (lpj=1966080)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Brought up 1 CPUs
SMP: Total of 1 processors activated (393.21 BogoMIPS).
NET: Registered protocol family 16
L2x0 series cache controller enabled
l2x0: 8 ways, CACHE_ID 0x00000000, AUX_CTRL 0x02520000
Serial: AMBA PL011 UART driver
dev:uart0: ttyAMA0 at MMIO 0x10009000 (irq = 44) is a AMBA/PL011
console [ttyAMA0] enabled
dev:uart1: ttyAMA1 at MMIO 0x1000a000 (irq = 45) is a AMBA/PL011
dev:uart2: ttyAMA2 at MMIO 0x1000b000 (irq = 46) is a AMBA/PL011
fpga:uart3: ttyAMA3 at MMIO 0x1000c000 (irq = 47) is a AMBA/PL011
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
Switching to clocksource timer3
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 4, 98304 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
UDP hash table entries: 128 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
PMU: registered new PMU device of type 0
NTFS driver 2.1.29 [Flags: R/W].
msgmni has been set to 498
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered
io scheduler deadline registered (default)
CLCD: unknown LCD panel ID 0x00001000, using VGA
CLCD: RealView hardware, XVGA display
Console: switching to colour frame buffer device 128x48
brd: module loaded
loop: module loaded
Uniform Multi-Platform E-IDE driver
ide-gd driver 1.18
pata_platform: probe of pata_platform failed with error -22
Error: Driver 'pata_platform' is already registered, aborting...
smsc911x: Driver version 2008-10-21.
smsc911x-mdio: probed
eth0: attached PHY driver [SMSC LAN911x Internal PHY]
(mii_bus:phy_addr=0:01, irq=-1)
net eth0: MAC Address: 52:54:00:12:34:56
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
mmci-pl18x: probe of fpga:mmc0 failed with error -22
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
ThumbEE CPU extension supported.
input: AT Raw Set 2 keyboard as /class/input/input0
VFS: Cannot open root device "hda1" or unknown-block(0,0)
Please append a correct "root=" boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Backtrace:
[<c00327a8>] (dump_backtrace+0x0/0x110) from [<c0328bb8>] (dump_stack+0x18/0x1c)
r6:00008001 r5:cf8bb000 r4:c04231f4
[<c0328ba0>] (dump_stack+0x0/0x1c) from [<c0328c20>] (panic+0x64/0x180)
[<c0328bbc>] (panic+0x0/0x180) from [<c00092a4>] (mount_block_root+0x240/0x290)
r3:00000000 r2:cf81be80 r1:cf81bf58 r0:c03aa673
r7:c0026a1c
[<c0009064>] (mount_block_root+0x0/0x290) from [<c0009444>]
(mount_root+0x54/0x6c)
[<c00093f0>] (mount_root+0x0/0x6c) from [<c00095c8>]
(prepare_namespace+0x16c/0x1bc)
r5:c0026a31 r4:c0422744
[<c000945c>] (prepare_namespace+0x0/0x1bc) from [<c0008ebc>]
(kernel_init+0x1d0/0x220)
r5:c0025574 r4:c04226e0
[<c0008cec>] (kernel_init+0x0/0x220) from [<c0049be4>] (do_exit+0x0/0x638)
r8:00000000 r7:00000013 r6:c0049be4 r5:c0008cec r4:00000000
Killed
> Alex.
>
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