linux-kernel - Re: [PATCH v1 1/1] MIPS: TXx9: Convert SPI platform data to software nodes

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Message-ID: <alpine.DEB.2.21.2201090221150.56863@angie.orcam.me.uk>
Date:   Tue, 18 Jan 2022 19:59:39 +0000 (GMT)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Arnd Bergmann <arnd@...db.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/1] MIPS: TXx9: Convert SPI platform data to software
 nodes

Hi Geert,

> Took me a bit to test proper operation, as contemporary cross-toolchains
> create userland binaries that can no longer run on MIPS-II/III CPUs,
> and native development is slow and memory-constrained (dpkg OOM)...

 You mean cross-toolchains included with (some) distributions, right?

 I do hope so or otherwise I'd be very concerned.  Myself I've been using 
a self-built MIPS cross-compiler, running on POWER9, which builds MIPS I 
binaries just fine, e.g.:

$ file install/usr/sysroot/{lib/ld-2.32.9000.so,usr/bin/gdbserver}
install/usr/sysroot/lib/ld-2.32.9000.so: ELF 32-bit LSB pie executable, MIPS, MIPS-I version 1 (SYSV), dynamically linked, with debug_info, not stripped
install/usr/sysroot/usr/bin/gdbserver: ELF 32-bit LSB executable, MIPS, MIPS-I version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld.so.1, for GNU/Linux 3.2.0, not stripped
$ install/usr/bin/mipsel-linux-gnu-gcc -dumpversion
11.0.0
$ 

(time to upgrade perhaps).

  Maciej