Making Picostation m2HP work

Wed Jul 17 23:54:17 UTC 2013

On Tue, Jul 16, 2013 at 6:48 AM, Luiz Otavio O Souza <lists.br at gmail.com> wrote:
> On 16 July 2013 00:52, Adrian Chadd <adrian at freebsd.org> wrote:
>>
>> Right,
>>
>> you have to get the mdio bus configured up right, then attach arswitch to
>> it.
>>
>> Then you tell arge0/arge1 what PHY it speaks to, via Stefan's mdioproxy
>> stuff.
>>
>> _then_ arge0/arge1 will come up.
>>
>> Now, as for how you do that - i'd have to re-read the datasheet and
>> write some documentation:
>>
>> * one of them (I think arge0) is directly glued to arswitch with no
>> PHY per se - it's hard-programmed with a MIIbus mode (RMGII I think?)
>> and 100/full or 1000/full
>
>
> It's usually the arge1 which is dedicated to switch and it's hard-programmed
> as 1000/full (even when the switch ports are just 10/100).
>
> arge0 is the 'WAN' port (using the dedicated PHY 4).
>
> The MDIO is at arge0 on ar7240 and at arge1 on ar7241.
>
> [...]
>>
>>
>> I'll follow this up with a post explaining how the miibus, mdiobus,
>> mdioproxy stuff and how arswitch is configured. Then I'll braindump
>> that into the wiki.
>
>
> Thanks Adrian!
>
> Stefan also has a nice documentation about how this stuff fits together:
>
> https://wiki.freebsd.org/StefanBethke/EtherSwitch
> http://www.bsdcan.org/2012/schedule/attachments/201_BSDCan-2012-Bethke-Ethernet-Switch-Framework.pdf
>

Thanks a lot Adrian and Luiz for the explanation.

I've built just the kernel with in-tree (-head) kernconf AP91 and
hints file from Luiz: http://pastebin.com/Z647yiZh

And I am seeing arge0/1 attaching:

ar7240> go 80050100
## Starting application at 0x80050100 ...
CPU platform: Atheros AR7241 rev 1
CPU Frequency=390 MHz
CPU DDR Frequency=390 MHz
CPU AHB Frequency=195 MHz
platform frequency: 390000000
CPU reference clock: 5 MHz
arguments:
  a0 = 00000001
  a1 = 81f4fcbc
  a2 = 00000010
  a3 = fffffffe
Cmd line:argv is invalid
Environment:
envp is invalid
Cache info:
  picache_stride    = 4096
  picache_loopcount = 16
  pdcache_stride    = 4096
  pdcache_loopcount = 8
cpu0: MIPS Technologies processor v116.147
  MMU: Standard TLB, 16 entries
  L1 i-cache: 4 ways of 512 sets, 32 bytes per line
  L1 d-cache: 4 ways of 256 sets, 32 bytes per line
  Config1=0x9ee3519e<PerfCount,WatchRegs,MIPS16,EJTAG>
  Config3=0x20
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2013 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 10.0-CURRENT #1 r252757M: Wed Jul 17 16:45:15 PDT 2013
    root at flymockour-l7.corp.yahoo.com:/usr/home/hirenp/head/obj/mips.mips/usr/home/hirenp/head/sys/AP91
mips
gcc version 4.2.1 20070831 patched [FreeBSD]
real memory  = 16777216 (16384K bytes)
avail memory = 11968512 (11MB)
random device not loaded; using insecure entropy
nexus0: <MIPS32 root nexus>
clock0: <Generic MIPS32 ticker> on nexus0
Timecounter "MIPS32" frequency 195000000 Hz quality 800
Event timer "MIPS32" frequency 195000000 Hz quality 800
argemdio0: <Atheros AR71xx built-in ethernet interface, MDIO
controller> at mem 0x1a000000-0x1a000fff on nexus0
mdio0: <MDIO> on argemdio0
mdioproxy0: <MII/MDIO proxy, MDIO side> on mdio0
arswitch0: <Atheros AR7240 Ethernet Switch> on mdio0
miibus0: <MII bus> on arswitch0
ukphy0: <Generic IEEE 802.3u media interface> PHY 0 on miibus0
ukphy0:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseT-FDX, 1000baseT-FDX-master, auto
miibus1: <MII bus> on arswitch0
ukphy1: <Generic IEEE 802.3u media interface> PHY 1 on miibus1
ukphy1:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseT-FDX, 1000baseT-FDX-master, auto
miibus2: <MII bus> on arswitch0
ukphy2: <Generic IEEE 802.3u media interface> PHY 2 on miibus2
ukphy2:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseT-FDX, 1000baseT-FDX-master, auto
miibus3: <MII bus> on arswitch0
ukphy3: <Generic IEEE 802.3u media interface> PHY 3 on miibus3
ukphy3:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseT-FDX, 1000baseT-FDX-master, auto
mdio1: <MDIO> on arswitch0
mdioproxy1: <MII/MDIO proxy, MDIO side> on mdio1
etherswitch0: <Switch controller> on arswitch0
apb0 at irq 4 on nexus0
uart0: <16550 or compatible> on apb0
uart0: console (115200,n,8,1)
pcib0 at irq 0 on nexus0
pcib0: found EEPROM at 0x1fff1000 on 0.0.0
pcib0: EEPROM firmware: 0x1fff1000 @ 4096 bytes
pcib0: device EEPROM 'pcib.0.bus.0.0.0.eeprom_firmware' registered
pci0: <PCI bus> on pcib0
pci0: <network> at device 0.0 (no driver attached)
arge0: <Atheros AR71xx built-in ethernet interface> at mem
0x19000000-0x19000fff irq 2 on nexus0
arge0: Overriding MAC from EEPROM
miiproxy0: <MII/MDIO proxy, MII side> on arge0
miiproxy0: attached to target mdio1
arge0: finishing attachment, phymask 0010, proxy set
miibus4: <MII bus> on miiproxy0
ukphy4: <Generic IEEE 802.3u media interface> PHY 4 on miibus4
ukphy4:  none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseT-FDX, 1000baseT-FDX-master, auto
arge0: Ethernet address: 8e:42:00:5c:3c:04
arge1: <Atheros AR71xx built-in ethernet interface> at mem
0x1a000000-0x1a000fff irq 3 on nexus0
arge1: finishing attachment, phymask 0000, proxy null
arge1: Ethernet address: 8e:42:00:5c:3c:05
spi0: <AR71XX SPI> at mem 0x1f000000-0x1f00000f on nexus0
spibus0: <spibus bus> on spi0
mx25l0: <M25Pxx Flash Family> at cs 0 on spibus0
mx25l0: w25q64, sector 65536 bytes, 128 sectors
ar71xx_wdog0: <Atheros AR71XX watchdog timer> on nexus0
ar71xx_wdog0: Previous reset was due to watchdog timeout
Timecounters tick every 1.000 msec
arswitch0port1: link state changed to DOWN
arswitch0port2: link state changed to DOWN
arswitch0port3: link state changed to DOWN
arswitch0port4: link state changed to DOWN
Trying to mount root from ufs:/dev/map/rootfs.uncompress []...
mountroot: waiting for device /dev/map/rootfs.uncompress ...
Mounting from ufs:/dev/map/rootfs.uncompress failed with error 19.

Loader variables:

Manual root filesystem specification:
  <fstype>:<device> [options]
      Mount <device> using filesystem <fstype>
      and with the specified (optional) option list.

    eg. ufs:/dev/da0s1a
        zfs:tank
        cd9660:/dev/acd0 ro
          (which is equivalent to: mount -t cd9660 -o ro /dev/acd0 /)

  ?               List valid disk boot devices
  .               Yield 1 second (for background tasks)
  <empty line>    Abort manual input