[OpenBIOS] Back at it again( PCI Passthrough )

[Mark Cave-Ayland]

On 11/05/18 08:11, Jd Lyons via OpenBIOS wrote:

> Seems I could add config-1@ as a colon definition, however I’m not sure 
> how too deal with r1@?
> 
> : rl at -le  rl@ lbflip ;
> : >config  f1000000 + ;
> : config-l@  >config cr ." config-l@ " dup . rl at -le space dup . ;
> 
> Just can’t figure how r1@ is implemented in SLOF?

That's definitely the long way around. Attached is a quick and dirty 
hack for PPC-only that implements config-l@ for reference:

$ ./qemu-system-ppc -nographic -bios 
/home/build/src/openbios/openbios.git/openbios/obj-ppc/openbios-qemu.elf.nostrip

 >> =============================================================
 >> OpenBIOS 1.1 [May 11 2018 07:49]
 >> Configuration device id QEMU version 1 machine id 2
 >> CPUs: 1
 >> Memory: 128M
 >> UUID: 00000000-0000-0000-0000-000000000000
 >> CPU type PowerPC,750
milliseconds isn't unique.
Welcome to OpenBIOS v1.1 built on May 11 2018 07:49
Trying hd:,\\:tbxi...
Trying hd:,\ppc\bootinfo.txt...
Trying hd:,%BOOT...
No valid state has been set by load or init-program

0 > cd /pci/NE2000  ok
0 > .properties
name                      "NE2000"
vendor-id                 10ec
device-id                 8029
revision-id               0
class-code                20000
AAPL,interrupts           17
min-grant                 0
max-latency               0
devsel-speed              0
subsystem-vendor-id       1af4
subsystem-id              1100
cache-line-size           0
device_type               "network"
model                     "NE2000 PCI"
assigned-addresses        -- 14 : 01 00 10 10 00 00 00 00 00 00 10 00 00 
00 00 00 00 00 01 00
AAPL,address              fe001000
reg                       00001000 00000000 00000000   00000000 00000000
                           01001010 00000000 00000000   00000000 00000100
network-type              "ethernet"
removable                 "network"
category                  "net"
  ok
0 > cd ..  ok
0 > 1000 config-l@ u. 802910ec  ok
0 >

My reading of the IEEE-1275 PCI bindings is that you take the first 
32-bit word of "reg" for the PCI configuration space address, so as you 
can see we return the device-id/vendor-id for the NE2000 NIC as above.


ATB,

Mark.
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