Date: Thu, 15 Jun 2017 14:51:07 +0200 From: Emmanuel Vadot <manu@bidouilliste.com> To: Mark Millard <markmi@dsl-only.net> Cc: Warner Losh <imp@bsdimp.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Next up on creating armv7 MACHINE_ARCH: pre FCP stage Message-ID: <20170615145107.97e6460fbb6222b258bfd614@bidouilliste.com> In-Reply-To: <6EC26472-CE31-4B14-A049-3F153E590647@dsl-only.net> References: <CANCZdfqw4dwkrMtNO9zpdnuXkrmVrWf_M4Odcn5MY%2B0jz7h_dA@mail.gmail.com> <C0FEFDC3-A873-4110-928A-E534D3FB5FE7@dsl-only.net> <6EC26472-CE31-4B14-A049-3F153E590647@dsl-only.net>
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On Thu, 15 Jun 2017 02:08:10 -0700 Mark Millard <markmi@dsl-only.net> wrote: > On 2017-Jun-14, at 11:20 PM, Mark Millard <markmi at dsl-only.net> wrote: > > > On 2017-Jun-14, at 10:22 PM, Warner Losh <imp at bsdimp.com> wrote: > > > >> . . . > >> Comments? > > > > I booted Ubuntu Mate on a BPI-M3 and tried: > > > > $ uname -p > > armv7l > > > > $ uname -ap > > Linux bpi-iot-ros-ai 3.4.39-BPI-M3-Kernel #1 SMP PREEMPT Tue May 3 13:47:01 UTC 2016 armv7l armv7l armv7l GNU/Linux > > > > I was actually thinking that a "hf" might > > show up in how they name things if it was > > a hard float based build. But looking I > > see in /lib/ : > > > > . . . > > drwxr-xr-x 3 root root 16384 Nov 4 2016 arm-linux-gnueabihf > > . . . > > lrwxrwxrwx 1 root root 30 Oct 14 2016 ld-linux-armhf.so.3 -> arm-linux-gnueabihf/ld-2.23.so > > lrwxrwxrwx 1 root root 24 Apr 21 2016 ld-linux.so.3 -> /lib/ld-linux-armhf.so.3 > > . . . > > > > and in /lib/arm-linux-gnueabihf/ : > > > > lrwxrwxrwx 1 root root 10 Oct 14 2016 /lib/arm-linux-gnueabihf/ld-linux-armhf.so.3 -> ld-2.23.so > > > > so it appears armv7l was used for naming a > > hard float build in uname -p. > > > > Of course this does not check how uniform the > > various linux distributions are about such > > naming. > > > > Still it may mean that for linux-matching "armv7" > > might not be the right name for uname -p output. > > I tried another linux on the BPI-M3: gentoo . > > # uname -p > ARMv7 Processor rev 5 (v7l) > > (Wow. Not what I expected.) > > # uname -pa > Linux bananapi 3.4.39-BPI-M3-Kernel #1 SMP PREEMPT Tue May 3 13:47:01 UTC 2016 armv7l ARMv7 Processor rev 5 (v7l) sun8i GNU/Linux > > # uname -m > armv7l > > # uname -i > sun8i > > # ls -l /lib/ld-* > -rwxr-xr-x 1 root root 134192 Mar 26 2016 /lib/ld-2.21.so > lrwxrwxrwx 1 root root 10 Mar 26 2016 /lib/ld-linux-armhf.so.3 -> ld-2.21.so > > So again armv7l seems to be the base name used for > a hardfloat little-endian context --although it > appears that "uname -m" gives text more likely to > be used in testing for how to configure to match > the live context. "uname -p" seems far less > standardized for its results. The same for > "uname -i". > > === > Mark Millard > markmi at dsl-only.net On both your linux you are using linux-sunxi which is a fork of the Allwinner kernel "maintained" by the sunxi community (and it is old). To have the proper values of uname one should test running linux vanilla kernel. -- Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>
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