Date: Wed, 03 Apr 2002 17:38:14 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: "Kreider, Carl" <carl.kreider@windriver.com> Cc: freebsd-questions@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: read a file from a driver Message-ID: <40835.1017848294@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 03 Apr 2002 10:16:14 CDT." <20020403101614.A12363@indy.doctordesign.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <20020403101614.A12363@indy.doctordesign.com>, "Kreider, Carl" write s: > >I am working on an embedded project running FreeBSD, and my driver >for our custom card needs to load an FPGA with code. I know I can >compile the code in as data, but for ease of development, I would >rather fetch the FPGA code from a file. With a driver in kernel >space. Really. > >Can it be done? If so, how? open() and read() are obviously in libc >which rules them out. Do I have to write my own in assembler? Don't even think about it. At the time your driver is probed/attached, there is no filesystems mounted yet. Best suggestion is to use an ioctl to download the data from userland. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?40835.1017848294>