Re: [Qemu-devel] Fwd: Re: [PATCH v4 2/2] Add AT24Cxx I2C EEPROM device model

[Weng Fan <wengfan-fnst@cn.fujitsu.com>]

Thank you for you help.
I can use the at24 device.
And i can see the device in monitor model:
info qtree
  type i2c-bus
       dev: at24, id ""
         drive = eeprom
         logical_block_size = 512
         physical_block_size = 512
         min_io_size = 0
         opt_io_size = 0
         bootindex = -1
         discard_granularity = 0
         device = 0
         size = 65536
         address = 80
But I have another question.

How can i test the eeprom device at24?

My qemu command:
qemu-system-arm -drive file=test.img,if=none,id=eeprom  -device 
at24,address=0x4c,drive=eeprom -M versatilepb -nographic -kernel zImage 
-initrd initrd.img -append "root=linuxrc console=ttyAMA0,115200"

The kernel has compiled at24.c driver.

In virtual os,i can't see the device at24.
If i want write/read date in at24 device,what should i do?

I'm waiting for you help,thank you.


于 2013-5-16 0:10, Jan Kiszka 写道:
> On 2013-05-15 08:20, Weng Fan wrote:
>> Hi.
>> I want to use this patch for qemu-system-arm.
>> But an error occurred during initialization of the i2c device.
>>
>> The error message is :
>>
>> qemu-system-arm: drive property not set
>> qemu-system-arm: Initialization of device at24 failed
>>
>> The command is:
>> qemu-system-arm -M versatilepb -nographic -kernel zImage -initrd
>> initrd.img -append "root=linuxrc console=ttyAMA0,115200"
>
> You command line is incomplete, no mentioning of the -drive at24. The
> intended usage is:
>
> -drive file=/path/to/image,if=none,id=eeprom -device at24,drive=eeprom
>
> You can also specify the desired at24xxx type explicitly, e.g. at24c256
> for the 256K model. Otherwise the type is derived from the image size.
>
> Jan
>

-- 
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Best Regards
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Weng Fan
Development Dept.I
Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
No. 6 Wenzhu Road, Nanjing, 210012, China
TEL：+86+25-86630566-8222
Mail：wengfan-fnst@cn.fujitsu.com
http://www.fujitsu.com/cn/fnst/
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