Date: Sun, 6 Dec 2015 10:45:38 -0600 From: Erik Moe <e.moe@rcn.com> To: Warner Losh <imp@bsdimp.com> Cc: Jukka Ukkonen <jau789@gmail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Raspberry Pi Zero Message-ID: <B9614EFF-DA70-48BB-AFB3-2574C2936620@rcn.com> In-Reply-To: <CANCZdfpOBGKni7tUXbjxieTRBB=ONhypUQsaKu4a3UyWEP-_0w@mail.gmail.com> References: <44D770D9-F1EF-461E-BB1A-8A19E9FB4BC8@rcn.com> <4D7C44B3-8135-4431-A07B-6135284D0C02@bsdimp.com> <5663E1FA.3060602@kronometrix.org> <566407CE.4020403@gmail.com> <CANCZdfpOBGKni7tUXbjxieTRBB=ONhypUQsaKu4a3UyWEP-_0w@mail.gmail.com>
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Firmware was the issue. I mounted the MSDOS partition of the latest RPI-B snapshot, replaced bootcode.bin, fixup.dat, fixup_cd.dat, start.elf and start_cd.elf from https://github.com/raspberrypi/firmware <https://github.com/raspberrypi/firmware>; and the Zero booted right up into multi-user mode. It didn’t seem to mind that the DTB was for the RPI-B. Erik > On Dec 6, 2015, at 10:20 AM, Warner Losh <imp@bsdimp.com> wrote: > > On Sun, Dec 6, 2015 at 3:02 AM, Jukka Ukkonen <jau789@gmail.com> wrote: > >> On 12/06/15 09:21, Stefan Parvu wrote: >>> >>>> I haven’t looked, but most likely a new u-boot and/or other firmware is >> required. >>> >>> Talking about this, reminds me something I always wanted to ask. >>> >>> Q: cant we deliver one image for RBPI, RBPI2, RBPI0 boards for example ? >>> Currently one has to download & use a different image for a different >>> board. Linux Raspbian does not have this model. >>> >>> Why is this on FreeBSD ARM ? >>> >>> thanks, >>> >> >> I guess there is also the little issue that because >> RPI2 supports hardware floating point operations, >> > > Both support hardware floating point. RPi B vfp v2, and > the RPi2 vfp v3. > > >> it also makes sense to compile the user space with >> the hardware floating enabled. So, in addition to >> separate kernels one might quite reasonably wish to >> have also separate user space libraries and binaries. >> > > It's desirable, but not for the floating point reason. > > >> Additionally RPI2 needs SMP support RPI-B does not. >> If the same common image had to support both, the >> image would end up being suboptimal for both. > > > The suboptimality isn't so great. > > After I sent the mail last night, I realized that there's > other differences between the two CPUs that require different > DTBs, different firmware to be loaded into the GPU, and > likely a host of other minor things. Surmountable (since the > base firmware / IPL supports it), but lots of work. > > Warner > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"help
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