[ECOS] Mounting a FAT filesystem

[ECOS] Mounting a FAT filesystem

[Eduardo Sabaj]

I enabled the debuggers in ide_disk.c. Now I see that the driver can
read the following information from the disk in function
ide_disk_init():

Firmware rev. : NDBA418J
           Model :   128MB NANDrive
           C/H/S : 977/8/32
             Kind : 4

However, the following "if" condition is the one which is rejecting the disk.

ide_disk_init ()
{
....
....

    if (((ide_idData->general_conf>>8)&0x1f)!=2) {
        diag_printf("IDE device %d:%d is not a hard disk!\n",
                    info->port, info->chan);
        return false;
    }
}

The value of "ide_idData->general_conf>>8)&0x1f" is the same as Kind
(printed above), So it expects a value of 2 while the value that is
reading is 4. Could anyone tell me which is the incompatibility here?

Regards
Eduardo

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Re: [ECOS] Mounting a FAT filesystem

[Gary Thomas]

Eduardo Sabaj wrote:
> I've already enabled this debugger. I can see the following message..
> 
> "IDE device 0:0 is not a hard disk"

Start with this - the eCos IDE driver does not recognize your hardware.
Until you solve this, you cannot proceed.

How could this message be any clearer?

> My board has attached two ide disks: a disk on module (128 Mb) acting as
> a slave, and a NandDrive (also 128 Mb) configured as master..
> 
> By the way, which is the syntax to mount the disk attached as master ?
> (remember that there is only one partition which occupies the whole disk)...
> 
> mount ("/dev/hda/"....)
> mount ("/dev/hda0/0", ...)
> 
> Regards
> Eduardo
> 
> Gary Thomas escribió:
>> Eduardo Sabaj wrote:
>>   
>>> Gary, I didn't verify it... Is there any debugger that tells me this
>>> information?
>>>     
>>
>> Try enabling 'CYGDBG_IO_DISK_DEBUG'
>>
>>   
>>> Gary Thomas escribió:
>>>     
>>>> Andrew Lunn wrote:
>>>>   
>>>>       
>>>>> On Fri, Apr 03, 2009 at 09:04:42AM -0300, Eduardo Sabaj wrote:
>>>>>     
>>>>>         
>>>>>> I have an i386 platform with two IDE disks and until now I have had no
>>>>>> success in trying to mount a FAT filesystem in my development.. What I
>>>>>> have tried is the following:
>>>>>>
>>>>>> mount ("/dev/hda/" , "/", "fatfs:sync=write");
>>>>>>
>>>>>> In spite of the fact that on my project file (.ecc) the names of the
>>>>>> disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
>>>>>> errno 19 ("no such device").
>>>>>>
>>>>>> Moreover, if I try to lookup the driver by...
>>>>>>
>>>>>> cyg_io_lookup("/dev/hda/", &handle);
>>>>>>
>>>>>> it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??
>>>>>>       
>>>>>>           
>>>>> Arn't you forgetting about partitions? You want to mount the first
>>>>> partition on the disk, not the disk itself?
>>>>>     
>>>>>         
>>>> Also, have you verified that the IDE driver actually finds
>>>> any of these partitions?

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

-- 
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Re: [ECOS] Mounting a FAT filesystem

[Gary Thomas]

Eduardo Sabaj wrote:
> Gary, I didn't verify it... Is there any debugger that tells me this
> information?

Try enabling 'CYGDBG_IO_DISK_DEBUG'

> Gary Thomas escribió:
>> Andrew Lunn wrote:
>>   
>>> On Fri, Apr 03, 2009 at 09:04:42AM -0300, Eduardo Sabaj wrote:
>>>     
>>>> I have an i386 platform with two IDE disks and until now I have had no
>>>> success in trying to mount a FAT filesystem in my development.. What I
>>>> have tried is the following:
>>>>
>>>> mount ("/dev/hda/" , "/", "fatfs:sync=write");
>>>>
>>>> In spite of the fact that on my project file (.ecc) the names of the
>>>> disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
>>>> errno 19 ("no such device").
>>>>
>>>> Moreover, if I try to lookup the driver by...
>>>>
>>>> cyg_io_lookup("/dev/hda/", &handle);
>>>>
>>>> it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??
>>>>       
>>> Arn't you forgetting about partitions? You want to mount the first
>>> partition on the disk, not the disk itself?
>>>     
>>
>> Also, have you verified that the IDE driver actually finds
>> any of these partitions?
>>
>>   
> 
> <http://www.grupohasar.com/disclaimer> 
> 


-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

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Re: [ECOS] Mounting a FAT filesystem

[Eduardo Sabaj]

Andrew, I have only one partition, however, I tried adding the
partition number ..

mount ("/dev/hda/0", "/", "fatfs:sync=write");

(I read that partition number '0' means the whole disk) and it didn't work.

I suppose that there is something that I'm omitting but I can't
realize what is it..

On Fri, Apr 3, 2009 at 9:17 AM, Andrew Lunn <andrew@lunn.ch> wrote:
> On Fri, Apr 03, 2009 at 09:04:42AM -0300, Eduardo Sabaj wrote:
>> I have an i386 platform with two IDE disks and until now I have had no
>> success in trying to mount a FAT filesystem in my development.. What I
>> have tried is the following:
>>
>> mount ("/dev/hda/" , "/", "fatfs:sync=write");
>>
>> In spite of the fact that on my project file (.ecc) the names of the
>> disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
>> errno 19 ("no such device").
>>
>> Moreover, if I try to lookup the driver by...
>>
>> cyg_io_lookup("/dev/hda/", &handle);
>>
>> it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??
>
> Arn't you forgetting about partitions? You want to mount the first
> partition on the disk, not the disk itself?
>
>          Andrew
>

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Re: [ECOS] Mounting a FAT filesystem

[Gary Thomas]

Andrew Lunn wrote:
> On Fri, Apr 03, 2009 at 09:04:42AM -0300, Eduardo Sabaj wrote:
>> I have an i386 platform with two IDE disks and until now I have had no
>> success in trying to mount a FAT filesystem in my development.. What I
>> have tried is the following:
>>
>> mount ("/dev/hda/" , "/", "fatfs:sync=write");
>>
>> In spite of the fact that on my project file (.ecc) the names of the
>> disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
>> errno 19 ("no such device").
>>
>> Moreover, if I try to lookup the driver by...
>>
>> cyg_io_lookup("/dev/hda/", &handle);
>>
>> it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??
> 
> Arn't you forgetting about partitions? You want to mount the first
> partition on the disk, not the disk itself?

Also, have you verified that the IDE driver actually finds
any of these partitions?

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

Re: [ECOS] Mounting a FAT filesystem

[Andrew Lunn]

On Fri, Apr 03, 2009 at 09:04:42AM -0300, Eduardo Sabaj wrote:
> I have an i386 platform with two IDE disks and until now I have had no
> success in trying to mount a FAT filesystem in my development.. What I
> have tried is the following:
> 
> mount ("/dev/hda/" , "/", "fatfs:sync=write");
> 
> In spite of the fact that on my project file (.ecc) the names of the
> disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
> errno 19 ("no such device").
> 
> Moreover, if I try to lookup the driver by...
> 
> cyg_io_lookup("/dev/hda/", &handle);
> 
> it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??

Arn't you forgetting about partitions? You want to mount the first
partition on the disk, not the disk itself?

          Andrew

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[ECOS] Mounting a FAT filesystem

[Eduardo Sabaj]

I have an i386 platform with two IDE disks and until now I have had no
success in trying to mount a FAT filesystem in my development.. What I
have tried is the following:

mount ("/dev/hda/" , "/", "fatfs:sync=write");

In spite of the fact that on my project file (.ecc) the names of the
disk devices are /dev/hda, /dev/hdb, etc..., mount returns -1 and
errno 19 ("no such device").

Moreover, if I try to lookup the driver by...

cyg_io_lookup("/dev/hda/", &handle);

it returns -22 ("invalid argument"). Could anyone tell me what I'm missing ??

FYI, in order to have support for FAT filesystem and for generic IDE,
I added the following packages on my configuration file:

-----
cdl_savefile_version 1;
cdl_savefile_command cdl_savefile_version {};
cdl_savefile_command cdl_savefile_command {};
cdl_savefile_command cdl_configuration { description hardware template
package };
cdl_savefile_command cdl_package { value_source user_value
wizard_value inferred_value };
cdl_savefile_command cdl_component { value_source user_value
wizard_value inferred_value };
cdl_savefile_command cdl_option { value_source user_value wizard_value
inferred_value };
cdl_savefile_command cdl_interface { value_source user_value
wizard_value inferred_value };

cdl_configuration eCos {

   package CYGPKG_IO_FILEIO current ;
   package CYGPKG_IO current ;
   package CYGPKG_LIBC_STRING current ;

   package CYGPKG_DEVS_DISK_IDE current ;
   package CYGPKG_IO_DISK current ;
   package CYGPKG_BLOCK_LIB current ;
   package CYGPKG_LINUX_COMPAT current ;
   package CYGPKG_FS_FAT current ;

   package CYGPKG_MEMALLOC current ;
};
-----

Regards,
Eduardo

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