hard coded value for idcode field in struct cpu_table
madhavi.linux at gmail.com
Sun Mar 6 02:51:19 EST 2011
2011/3/5 Sławomir Cygan <slawomir.cygan at gmail.com>:
> On Thu, Mar 3, 2011 at 2:49 PM, Madhavi Manchala
> <madhavi.linux at gmail.com> wrote:
>> Dear All,
>> I do not understand the value of idcode field in the struct cpu_table
>> i.e. the value is hard coded. I did not find that value in the user
>> manuals also. The code is available at
>> linux/arch/arm/plat-s3c24xx/cpu.c file. Currently, I am implementing
>> code for Samsung S3C2510A processor which is not available in the
>> current sources. Where can I find the idcode value for Samsung
>> S3C2510A processor?
>> Any ideas will be appreciated.
>> Thanks and Regards,
>> Madhavi M.
> This field is defined for example in this datasheed:
> PDF page 282:
> GENERAL STATUS REGISTER (GSTATUSn)
> Register Address R/W Description Reset Value
> GSTATUS0 0x560000AC R External pin status Undefined
>>>>>> GSTATUS1 0x560000B0 R Chip ID 0x32410000 <<<
> GSTATUS2 0x560000B4 R/W Reset status 0x1
> GSTATUS3 0x560000B8 R/W Infrom register 0x0
> GSTATUS4 0x560000BC R/W Infrom register 0x0
> This is "GSTATUS1" register initial value
> I don't think that S3c25 are so similar to S3c25, so they provide
> exactly the same method of chip identification.
Thank you very much Slawomir Cygan for the information. However, I did
not find any CHIP ID in the S3C2510A documentation, as you said. There
are IDs which are PCI vendor ID and device ID. I guess, this is
different from that chip ID as in case S3C2410A.
Thanks and Regards,
> Sławomir Cygan
More information about the linux-arm-kernel