inode issue with openpromfs [was Re: rtc and chrony on Ultra 1 and Ultra 5]

[Mike Edwards <sauron-debian-sparc@psychology.rutgers.edu>]

That reminds me...

prtconf:
    Node 0xf0085810
        manufacturer#:  00000017
        implementation#:  00000011
        mask#:  00000020
        sparc-version:  00000009
        ecache-associativity:  00000001
        ecache-line-size:  00000040
        ecache-size:  00200000
        #dtlb-entries:  00000040
        dcache-associativity:  00000001
        dcache-line-size:  00000020
        dcache-size:  00004000
        #itlb-entries:  00000040
        icache-associativity:  00000002
        icache-line-size:  00000020
        icache-size:  00004000
        upa-portid:  00000000
        clock-frequency:  11a49a00
        reg:  000001c0.00000000.00000000.00000008
        device_type: 'cpu'
        name: 'SUNW,UltraSPARC-II'

    Node 0xf0085b7c
        manufacturer#:  00000017
        implementation#:  00000011
        mask#:  00000020
        sparc-version:  00000009
        ecache-associativity:  00000001
        ecache-line-size:  00000040
        ecache-size:  00200000
        #dtlb-entries:  00000040
        dcache-associativity:  00000001
        dcache-line-size:  00000020
        dcache-size:  00004000
        #itlb-entries:  00000040
        icache-associativity:  00000002
        icache-line-size:  00000020
        icache-size:  00004000
        upa-portid:  00000001
        clock-frequency:  11a49a00
        reg:  000001c2.00000000.00000000.00000008
        device_type: 'cpu'
        name: 'SUNW,UltraSPARC-II'

Note how certain pieces of information (upa-portid and reg, as well as
the node #) differ, for obvious reasons (two cpus).

openpromfs:
$ ls -alid /proc/openprom/SUNW,UltraSPARC-II*
     79 dr-xr-xr-x    2 root     root            0 Apr 19 14:39
/proc/openprom/SUNW,UltraSPARC-II@1c,0
     79 dr-xr-xr-x    2 root     root            0 Apr 19 14:39
/proc/openprom/SUNW,UltraSPARC-II@1c,0

Same inode number.  Of course, with the node name and inode number being
the same, not all information available from openprom will be available
via openpromfs...

$ cat /proc/openprom/SUNW\,UltraSPARC-II\@1c\,0/upa-portid 
00000000

Wheeee?


On Tue, Apr 19, 2005 at 12:30:53PM -0700, David S. Miller said:
> Why did the rename the device node to "eeprom"? :-/
> 
>                 Node 0xf0066414
>                     address:  fffba000
>                     reg:  00000014.00000000.00002000
>                     model: 'mk48t59'
>                     name: 'eeprom'

-- 
Mike Edwards <sauron-debian-sparc@psychology.rutgers.edu>
System Administrator
Psychology Department, Rutgers University, Newark campus