Thread (4 messages) flat view 4 messages, 2 authors, 2011-03-06

hard coded value for idcode field in struct cpu_table

From: Sławomir Cygan <hidden>
Date: 2011-03-05 13:50:58

On Thu, Mar 3, 2011 at 2:49 PM, Madhavi Manchala
[off-list ref] 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.
Hi,
This field is defined for example in this datasheed:

http://www.alldatasheet.com/datasheet-pdf/pdf/84872/SAMSUNG/S3C2410A.html

PDF page 282:

GENERAL STATUS REGISTER (GSTATUSn)
Register Address R/W Description Reset Value
GSTATUS0 0x560000AC R External pin status Undefined
quoted
quoted
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  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.

-- 
Pozdrawiam,
S?awomir Cygan
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