Date: Thu, 27 Feb 2014 20:45:12 -0700 From: Ian Lepore <ian@FreeBSD.org> To: freebsd-arm <freebsd-arm@FreeBSD.org> Subject: imx6 / wandboard SMP Message-ID: <1393559112.1149.132.camel@revolution.hippie.lan>
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Thanks to an excellent patchset contributed by Juergen Weiss we now have SMP for Wandboard and imx6 in general. To test this yourself, update to r262587 or later and add "option SMP" to your kernel config. I haven't yet committed kernel config changes to add "option SMP" because I didn't want to take anyone by surprise on an update. It seems to be pretty stable in the limited testing I've done, but I stress "limited" (I haven't even tested sdcard yet, just nfsroot). I committed the bulk of the work last weekend, and today I committed the last bits, involving using the WFI instruction in the idle loop and doing some minimal setup of the imx6 power control to keep the cores powered on enough to process timer interrupts during WFI. More on that in a separate message. So a big round of thanks to Juergen for the SMP work, and to Steven Lawrance for the temperature-sensor stuff so we can be sure the SMP stuff isn't cooking our chips. -- Ian
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