Date: Sat, 21 Dec 2013 23:44:47 -0700 From: Warner Losh <imp@bsdimp.com> To: "freebsd-arm@freebsd.org" <arm@FreeBSD.org> Subject: 10.0-release proposed patch for Atmel Message-ID: <B5B10EE3-955D-4A8C-A233-9DADF6898A54@bsdimp.com>
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Gentlemen, Right now, the mountroot prompt doesn't work on Atmel CPUs. Almost all = the characters are eaten. I recently committed an elegant fix for this = into head to mask the interrupt for new characters and only do polling. However, it touched the base uart. In an abundance of caution, the re@ = has asked me to see if I can come up with a fix w/o that. A less elegant, less functional fix can be found at = http://people.freebsd.org/~imp/at91-mountroot-10.diff This fix defers turning on the RXRDY bit in the interrupt mask until we = get the first interrupt after the first opening of the device. This is = sufficient for mountroot> to work, but wouldn't fix things like GELI = that prompt the user from the kernel. I think that's acceptable for 10.0 = given the typical use case for atmel. Can the folks here that know Atmel take a look at the patch and let me = know what you think? Warner
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