From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HSWBS-0005Z0-82 for qemu-devel@nongnu.org; Sat, 17 Mar 2007 06:30:46 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HSWBQ-0005U2-Me for qemu-devel@nongnu.org; Sat, 17 Mar 2007 06:30:45 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HSWBQ-0005TV-Ci for qemu-devel@nongnu.org; Sat, 17 Mar 2007 05:30:44 -0500 Received: from mail.codesourcery.com ([65.74.133.4]) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HSWAC-0003rE-1x for qemu-devel@nongnu.org; Sat, 17 Mar 2007 06:29:28 -0400 From: Paul Brook Subject: Re: [Qemu-devel] [PATCH] SecureDigital card emulation. Date: Sat, 17 Mar 2007 10:29:18 +0000 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703171029.19713.paul@codesourcery.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, balrogg@gmail.com On Friday 16 March 2007 20:59, andrzej zaborowski wrote: > Emulates an SD card with the full command set (no SPI mode though). > Should be more or less compliant with version 1.10 specification. I suspect your code only works on x86. Specifically things like: > +struct sd_response_r1_s { > + uint8_t cmd; > + uint32_t status; > + uint8_t crc; > +}; Will be a 12-byte struct on many hosts, and probably also breaks on big-endian hosts. AFAICS there's no way for the caller of sd_write_cmdline to figure out what type of response is returned (other than the length), so has to rely on doing a bitwise copy. Paul