[ECOS] Probed sizes and CPU addresses invalid

[Jacek Poplawski]

Hello,

I ported CVS version of ecos/RedBoot to ixdp2801, I am able to access 
flash and boot Linux.

Now I am working on port of onboard intel ethernet controller 82545, I 
found driver for 82544 in ecos source.

I've added new device_id and... RedBoot almost detect the device, but 
all read/write from/to register fail,
because memory address is probably wrong.

Please look at my debug output:

Found device on bus 0, devfn 0x08:
 Note that board is active. Probed sizes and CPU addresses invalid!
 Vendor    0x8086
 Device    0x1028
 Command   0x0007, Status 0x0230
 Class/Rev 0x02000004
 Header 0x00
 SubVendor 0x8086, Sub ID 0x1028
 BAR[0]    0x42100000 / probed size 0x00000000 / CPU addr 0x22100000
 BAR[1]    0x00000000 / probed size 0x00000000 / CPU addr 0xe0000000
 BAR[2]    0x00000041 / probed size 0x00000000 / CPU addr 0xd8000040
 BAR[3]    0x00000000 / probed size 0x00000000 / CPU addr 0xe0000000
 BAR[4]    0x00000000 / probed size 0x00000000 / CPU addr 0xe0000000
 BAR[5]    0x00000000 / probed size 0x00000000 / CPU addr 0xe0000000
 eth0 configured
found p_i82544: 27d20
 I/O address = 0x22100000 device = 1028

"0x1028" is device_id of 82545

According to Intel documentation (and ecos source) BAR[0] should be used
as the "base address register". I am almost sure that this value is wrong.

What means "Note that board is active. Probed sizes and CPU addresses 
invalid!"?

I looked into the source... And I don't understand, what's the other 
way  of reading BAR[0] if this won't work?
How can I know what's the base address register? This card is accessible 
from Linux (but I need it from RedBoot),
can I read this value somehow from Linux (or do I need to trace ethernet 
driver in Linux kernel)?

-- 
Jacek Poplawski
Software Engineer
Silicon and Software Systems
http://www.s3group.com


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