Re: [Qemu-devel] QEMU 1.2.0 -hda option not working

[Fam Zheng]

Is the device driver compiled in the kernel?

---
Best regards!
Fam Zheng


On Fri, Nov 9, 2012 at 3:59 PM, Vipin Gahlaut <address@hidden> wrote:
> Hi Dunrong,
>
> I tried your suggestion but it is not working. Please find more details
> below.
>
> 1. I have created image using qemu-img command (qemu-img create -disk.img
> 1G), loop mounted it and installed root file system on this image.
>
> 2. I am using linux kernel 3.5.5 and made sure that SCSI support is included
> in the kernel. Using QEMU 1.2.0
>
> 3. Running QEMU as below
>
> /usr/local/bin/qemu-system-arm -M versatilepb -kernel
> /home/vgahlaut/labs/linux-3.5.5/arch/arm/boot/zImage -nographic -hda
> /home/vgahlaut/labs/disk.img -append "root=/dev/sda mem=128M
> console=ttyAMA0,115200"
>
> 4.Getting Error (VFS: Cannot open root device "sda" or unknown-block(0,0):
> error -6). Please see complete logs below
> ========
> Uncompressing Linux... done, booting the kernel.
> Booting Linux on physical CPU 0
> Linux version 3.5.5 (address@hidden) (gcc version 4.3.2 (crosstool-NG
> 1.16.0) ) #21 Fri Nov 9 10:42:54 IST 2012
> CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00093177
> CPU: VIVT data cache, VIVT instruction cache
> Machine: ARM-Versatile PB
> Memory policy: ECC disabled, Data cache writeback
> sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
> Kernel command line: root=/dev/sda mem=128M console=ttyAMA0,115200
> PID hash table entries: 512 (order: -1, 2048 bytes)
> Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
> Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
> Memory: 128MB = 128MB total
> Memory: 126048k/126048k available, 5024k reserved, 0K highmem
> Virtual kernel memory layout:
>     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
>     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
>     vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
>     lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
>       .text : 0xc0008000 - 0xc0360810   (3427 kB)
>       .init : 0xc0361000 - 0xc0381cbc   ( 132 kB)
>       .data : 0xc0382000 - 0xc03a9100   ( 157 kB)
>        .bss : 0xc03a9124 - 0xc03c3c9c   ( 107 kB)
> NR_IRQS:192
> VIC @f1140000: id 0x00041190, vendor 0x41
> FPGA IRQ chip 0 "SIC" @ f1003000, 21 irqs
> Console: colour dummy device 80x30
> Calibrating delay loop... 425.16 BogoMIPS (lpj=2125824)
> pid_max: default: 32768 minimum: 301
> Mount-cache hash table entries: 512
> CPU: Testing write buffer coherency: ok
> Setting up static identity map for 0x2c2aa0 - 0x2c2af8
> devtmpfs: initialized
> NET: Registered protocol family 16
> Serial: AMBA PL011 UART driver
> dev:f1: ttyAMA0 at MMIO 0x101f1000 (irq = 12) is a PL011 rev1
> console [ttyAMA0] enabled
> dev:f2: ttyAMA1 at MMIO 0x101f2000 (irq = 13) is a PL011 rev1
> dev:f3: ttyAMA2 at MMIO 0x101f3000 (irq = 14) is a PL011 rev1
> fpga:09: ttyAMA3 at MMIO 0x10009000 (irq = 38) is a PL011 rev1
> bio: create slab <bio-0> at 0
> SCSI subsystem initialized
> Advanced Linux Sound Architecture Driver Version 1.0.25.
> Switching to clocksource timer3
> NET: Registered protocol family 2
> IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
> TCP established hash table entries: 4096 (order: 3, 32768 bytes)
> TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
> TCP: Hash tables configured (established 4096 bind 4096)
> 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
> RPC: Registered named UNIX socket transport module.
> RPC: Registered udp transport module.
> RPC: Registered tcp transport module.
> RPC: Registered tcp NFSv4.1 backchannel transport module.
> NetWinder Floating Point Emulator V0.97 (double precision)
> Installing knfsd (copyright (C) 1996 address@hidden).
> jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
> ROMFS MTD (C) 2007 Red Hat, Inc.
> msgmni has been set to 246
> 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)
> clcd-pl11x dev:20: >PL110 rev0 at 0x10120000
> clcd-pl11x dev:20: >Versatile hardware, VGA display
> Console: switching to colour frame buffer device 80x60
> Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> brd: module loaded
> physmap platform flash device: 04000000 at 34000000
> physmap-flash.0: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer ID
> 0x000000 Chip ID 0x000000
> Intel/Sharp Extended Query Table at 0x0031
> Using buffer write method
> smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <address@hidden>
> eth0: SMC91C11xFD (rev 1) at c8886000 IRQ 25 [nowait]
> eth0: Ethernet addr: 52:54:00:12:34:56
> mousedev: PS/2 mouse device common for all mice
> i2c /dev entries driver
> mmci-pl18x fpga:05: >mmc0: PL181 manf 41 rev0 at 0x10005000 irq 22,33 (pio)
> mmci-pl18x fpga:0b: >mmc1: PL181 manf 41 rev0 at 0x1000b000 irq 23,34 (pio)
> input: AT Raw Set 2 keyboard as /devices/fpga:06/serio0/input/input0
> aaci-pl041 fpga:04: >ARM AC'97 Interface PL041 rev0 at 0x10004000, irq 24
> aaci-pl041 fpga:04: >FIFO 512 entries
> TCP: cubic registered
> NET: Registered protocol family 17
> VFP support v0.3: implementor 41 architecture 1 part 10 variant 9 rev 0
> ALSA device list:
>   #0: ARM AC'97 Interface PL041 rev0 at 0x10004000, irq 24
> input: ImExPS/2 Generic Explorer Mouse as
> /devices/fpga:07/serio1/input/input1
> VFS: Cannot open root device "sda" or unknown-block(0,0): error -6
> Please append a correct "root=" boot option; here are the available
> partitions:
> 1f00           65536 mtdblock0  (driver?)
> Kernel panic - not syncing: VFS: Unable to mount root fs on
> unknown-block(0,0)
> [<c00199f0>] (unwind_backtrace+0x0/0xf4) from [<c02c0a8c>]
> (panic+0x6c/0x1cc)
> [<c02c0a8c>] (panic+0x6c/0x1cc) from [<c0361f8c>]
> (mount_block_root+0x178/0x238)
> [<c0361f8c>] (mount_block_root+0x178/0x238) from [<c03620cc>]
> (mount_root+0x80/0x100)
> [<c03620cc>] (mount_root+0x80/0x100) from [<c0362264>]
> (prepare_namespace+0x118/0x1ec)
> [<c0362264>] (prepare_namespace+0x118/0x1ec) from [<c03614cc>]
> (kernel_init+0x144/0x1d4)
> [<c03614cc>] (kernel_init+0x144/0x1d4) from [<c0015348>]
> (kernel_thread_exit+0x0/0x8)
>
> Best Regards
> Vipin
>
>
>
>
>
> On Fri, Nov 9, 2012 at 7:39 AM, Dunrong Huang <address@hidden> wrote:
>>
>> Hi,
>>
>> 2012/11/8 Vipin Gahlaut <address@hidden>
>>>
>>> Hi Experts,
>>>
>>> I am using qemu 1.2.0  and using arm versatilepb model. I am spevifying
>>> -hda hdd.img but linux is not able to recognize hard disk. I do not see it
>>> in device nodes. NONE of below exist in device nodes
>>
>>
>> try following command:
>> qemu-system-arm ... your-qemu-option ... -append "root=/dev/sda mem=256"
>>>
>>>
>>> /dev/sda
>>> /dev/sda1
>>> /dev/hda
>>> /dev/hda1
>>>
>>> Can anyone please help?
>>>
>>>
>>
>>
>>
>> --
>> Best Regards,
>>
>> Dunrong Huang
>
>