freebsd on mips64

Mon May 19 20:29:17 UTC 2008

Hello all !
I am also very interested to use FreeBSD o my routerboard 532, which
is a MIPS 4Kc 32 bits little endian.

I have some experience on cavium boards, and it is a very good
processor ! (we are using them on Linux now ...)
But, be carefull that you are only able to unleash all the octeon
power using "cavium simple executive" software (don't worry, using SMP
linux with cavium SDK, we are able to reach wirespeed on UDP
throughput very quickly)

For the moment, I have seen some mips commit on CURRENT, but it seems
that cross compiling and "standard" makefile procedure is not commited
yet.

If anyone have good pointers for that, I may be nice !
I have some time to spend to test mips (cross) compilation.

Nicolas.

2008/5/19 Jerry Toung <jrytoung at gmail.com>:
> Hello List,
> The company I work for is very interested in moving from FreeBSD/x86 to
> MIPS.
> To start, we are planning on getting an evaluation board from either RAZA
> microelectronics
> with an XLR processor (MIPS64) or from Cavium with an OCTEON (MIPS64).
>
> I understand that the FreeBSD/mips port is still under development. Because
> we are motivated,
> I would like to join the project and help as much as I can.
> I went to http://wiki.freebsd.org/FreeBSD/mips and got the snapshot from
> August 10, 2007 and also
> installed gxemul (GXemul 0.4.2) from the ports of my 6.2 machine. I wasn't
> able to retrieve gonzo's patches at
> http://gonzo.kiev.ua/mips/freebsd-gxemul-0.4.1.patch as per src/EMULATION
>
> 1- Please look at the pasted output at the bottom of the email and advise on
> what's wrong so
> I can boot to single user mode or to where ever you guys are now.
>
> 2- Based on my requirements above (xlr or octeon), could you advise on where
> I should start/what I will need for
> this port so I can get up to speed and contribute? (i.e docs, books, current
> source code, etc)
>
> 3- what is the current road map? what's on the TODO list as of now.
>
> I am sure I'll have more questions as we move forward. Thank you for
> listening.
> Jerry
>
> jtoung : gxemul -Vv -e malta -C 4kc -d /dev/null
> /usr/home/jtoung/FreeBSD/mips.build/mips/usr/home/jtoung/src/sys/MALTA/kernel
> GXemul 0.4.2    Copyright (C) 2003-2006  Anders Gavare
> Read the source code and/or documentation for other Copyright messages.
>
> Simple setup...
>    net: simulating 10.0.0.0/8 (max outgoing: TCP=100, UDP=100)
>        simulated gateway: 10.0.0.254 (60:50:40:30:20:10)
>            using nameserver 10.10.10.10
>    machine "default":
>        memory: 64 MB
>        cpu0: 4Kc (I+D = 16+16 KB)
>        machine: MALTA (evbmips, little endian)
>        bootstring: kernel
>        diskimage: /dev/null
>            IDE DISK id 0, read/write, 0 MB (0 sectors)
>        loading
> /usr/home/jtoung/FreeBSD/mips.build/mips/usr/home/jtoung/src/sys/MALTA/kernel
>        starting cpu0 at 0x801292f0 (gp=0x80355140)
> -------------------------------------------------------------------------------
>
> GXemul> c
> [ ns16550 (tty0): read from iir: 0x01 ]
> [ ns16550 (tty0): read from mcr: 0x00 ]
> [ ns16550 (tty0): write to lctl: 0x83 (Divisor Latch access, setting mode
> 8N1) ]
> [ ns16550 (tty0): speed set to 115200 bps ]
> [ ns16550 (tty0): write to lctl: 0x03 (setting mode 8N1) ]
> [ ns16550 (tty0): write to fifo control: 0x00 ]
> [ ns16550 (tty0): write to mcr: 0x0b ]
> [ ns16550 (tty0): read from iir: 0x03 ]
> entry: mips_init()
>  picache_stride    = 4096
>  picache_loopcount = 4
>  pdcache_stride    = 4096
>  pdcache_loopcount = 4
> Installing exception vector:
>        [0x80000000..0x80000080] <- [0x802efc18..0x802efc94]
> Exception vector at 80000000 almost out of space
> Installing exception vector:
>        [0x80000080..0x80000100] <- [0x802efd08..0x802efd20]
> Installing exception vector:
>        [0x80000100..0x80000180] <- [0x802efb3c..0x802efb54]
> Installing exception vector:
>        [0x80000200..0x80000280] <- [0x802efa60..0x802efa98]
> Installing exception vector:
>        [0x80000180..0x80000200] <- [0x802efa60..0x802efa98]
> Physical memory chunk(s):
> 0x35e2b0 - 0xffffff, 13245776 bytes (3233 pages)
> Kernel page table maps 4096 4K pages and is 511K
> [ yamon_emul(): syscon: TODO ]
> MIPS32 clock: 100000000 Hz
> Copyright (c) 1992-2007 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 7.0-CURRENT #0: Fri May 16 15:32:46 PDT 2008
>    jtoung at jtoung-bsd.
> :/usr/home/jtoung/FreeBSD/mips.build/mips/usr/home/jtoung/src/sys/MALTA
> [ exception TLBS <tlb> vaddr=0xe0000000 pc=0x802f478c ]
> [ exception TLBS <tlb> vaddr=0xe0002000 pc=0x802f478c ]
> [ exception TLBS <tlb> vaddr=0xe0004000 pc=0x802f478c ]
> [ exception TLBS <tlb> vaddr=0xe0006000 pc=0x802f478c ]
> [ exception TLBS <tlb> vaddr=0xe0008000 pc=0x802f478c ]
> ...............................................................................................................
> [ exception TLBS <tlb> vaddr=0xe0000010 pc=0x802cd53c <uma_startup+0xf8> ]
> [ exception TLBS <tlb> vaddr=0xe0004010 pc=0x802cd53c <uma_startup+0xf8> ]
> [ exception TLBS <tlb> vaddr=0xe0006010 pc=0x802cd53c <uma_startup+0xf8> ]
> [ exception TLBS <tlb> vaddr=0xe000e010 pc=0x802cd53c <uma_startup+0xf8> ]
> .......................................................................................................................
> [ exception TLBS <tlb> vaddr=0xe006c000 pc=0x802f478c ]
> [ exception TLBS <tlb> vaddr=0xe003103c pc=0x802e1600
> <vm_page_startup+0x238> ]
> [ exception TLBS <tlb> vaddr=0xe003202c pc=0x802e1600
> <vm_page_startup+0x238> ]
> [ exception TLBS <tlb> vaddr=0xe003400c pc=0x802e1600
> <vm_page_startup+0x238> ]
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-- 
----
Nicolas