Date: Tue, 8 Mar 2016 11:42:31 -0700 From: Warner Losh <imp@bsdimp.com> To: Brad Walker <bwalker@musings.com> Cc: "freebsd-embedded@freebsd.org" <freebsd-embedded@freebsd.org> Subject: Re: ? about kernel size.. Message-ID: <CANCZdfriqr24Lh9ZuptaC0gEm6gAV6LN9XHcVAJtbyaBejEgNg@mail.gmail.com> In-Reply-To: <CAPKZHbVyPji-bZwDzM77TN6qybjRcf%2BZe5r6WZmbG98LkhT-rg@mail.gmail.com> References: <CAPKZHbVyPji-bZwDzM77TN6qybjRcf%2BZe5r6WZmbG98LkhT-rg@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Mar 8, 2016 at 10:42 AM, Brad Walker <bwalker@musings.com> wrote: > I'm looking at working on a new project that will use the FreeBSD kernel. I > would attempt to embed the kernel on a very small NXP Kinetis chip. I've > previously done this using a Linux kernel but also had DDR memory attached > to the chip. This project would not have a DDR chip attached. > > So a couple of questions. 1 - What is the smallest size I could configure > the FreeBSD kernel out of the box? Could I get the size to be less than > 10MB, 5MB, 2MB, or etc.? > I've managed to get this down to about 2MB or a bit smaller. Compressed this can be a little smaller. It takes a fair amount of work, but it can be done. > I did a little bit of research on the PicoBSD and NanoBSD but that still > seem to be targeted to a little bit bigger chip than I have available. > How big a chip do you have? NanoBSD currently needs at least 64MB (and ideally 128MB) of storage. PicoBSD can be a bit smaller. Warner > Thanks for any insight/help. Also, if you response, please include me on > the CC line as I'm not a member of the freebsd-embedded alias. >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfriqr24Lh9ZuptaC0gEm6gAV6LN9XHcVAJtbyaBejEgNg>