Re: Starting NetBSD/mips64 kernel up and Userland Questions

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Thu, 2 Jan 2020 02:19:57 +0900
"Naruaki.Etomi" <nullnilaki%gmail.com@localhost> wrote:

> I succeeded in starting NetBSD/mips64(GENERIC64_IP3x) up on Sgi O2.
> https://dmesgd.nycbug.org/index.cgi?do=view&id=5275
> 
> Here is the patch.
> https://github.com/nullnilaki/NetBSD-mips64/commits/master

Nice! Now I really need to get a new power supply for my O2...

> I have a question about NetBSD/mips64 userland.
> 
> I did the following.
> # ./build.sh -j 16 -O ../obj.sgimips64 -T  ../tools.sgimips64 -m
> sgimips64 -U sets
> However, it was a 32 bit userland binary.
> # file cat
> cat: ELF 32-bit MSB shared object, MIPS, N32 MIPS-III version 1
> (SYSV), dynamically linked, interpreter /libexec/ld.elf_so, missing
> section headers

We default to N32 userlands on all mips64 - as in 64bit registers etc.
enabled but 32bit address space.

> How can I make a 64 bit userland binary?

Not sure they work properly, but gcc -mabi=64 ... is probably what
you're looking for.

> # file ip32boot
> ip32boot: ELF 64-bit MSB executable, MIPS, MIPS-III (SYSV), statically
> linked, with unknown capability 0x410000000f676e75 = 0x1000000070403,
> for NetBSD 9.99.31, not stripped
> 
> > bootp()ip32boot  
...
> [  11.0455541] boot device: mec0
> [  11.0811551] root on mec0

I've been running n32 kernels on mine, LP64 ones always ended up
panicing on copyout() when entering userland. Good to see you got that
fixed :)

> By the way, porting sgi octane is working.
> *Fix early initialize Hardware.
> *Fix paging kernel.
> *Lot of driver Required...(Xbow,xheart,ioc,etc...)

Please commit, even if it only partially works, so other people can
work on it as well ( mostly referring to myself, I have an Octane
here... )

have fun
Michael