Question about SPROM Readout

[Larry Finger]

On 12/11/2010 02:47 AM, Michael Büsch wrote:
> On Fri, 2010-12-10 at 16:06 -0600, Larry Finger wrote: 
>> On the box with the SPROM located at 0x0800 rather than 0x1000, a readout cycle
>> dumps data from whatever core happens to be mapped in the region 0x0 - 0xFFF. As
>> this is usually not the ChipCommon core, the SPROM dump is usually garbage.
>> Similarly, an SPROM write would overwrite lots of things.
> 
> No wait. The SPROM is not mapped into the core MMIO. It is mapped right
> above it. So a core switch does not affect it.
> Core window goes from 0-0x800 (0r 0-0x1000 on PCI-E). Above this, the
> SPROM is statically mapped.

I see where the io_resource is mapped from 0x100 - 0x7FF, but not where it gets
changed for PCIe.

This is the SPROM dump I get on the box in question:

SPROM=$(find /sys -name ssb_sprom)
cat $SPROM
DE0168000187570600000000C0000A001400000080000F0047004700830164003009C0FC00000
00000000000000001030001000002000200010004000400000002000000030002000E00470000
28000001000500C0FCE005FFFFFFFF0A0011010800000000000000DB48000000000000FAAB000
00100000000008904B9C98887060010270100E0320000000000000702000000001A04FA000A0E
0B090E0200000100000000003F01FFFF0000FC03427B0200900700000000B80B0080140414040
0000000FA000000000000004C1DE204AA000000F401410000000000000000009B0800000000A2
04000000000000000000000000000000000000000000000000000000004E002A003905D10AB70
35517A92A6004420085030000000085033505B8005B0411000300B602640A0000320200001C08
46000000000000000000000000000000000000000000000000000000000000000000000000000
000010000004252434D5F544553545F5353494400000000000000000000000000000000000039
00000050000000C0FC00000000000000000000000000000000000000000000000000000000000
000000000000000000000000000000000

These are clearly not the data from a real SPROM.

Larry