From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from majordomo by infradead.org with local (Exim 3.16 #2) id 13v7UF-0006zx-00 for mtd-list@infradead.org; Mon, 13 Nov 2000 00:28:39 +0000 Received: from sis.com.tw ([203.67.208.2] helo=fw11.sis.com.tw) by infradead.org with esmtp (Exim 3.16 #2) id 13v7UE-0006zr-00 for mtd@infradead.org; Mon, 13 Nov 2000 00:28:38 +0000 Message-ID: <3A0F34B9.F8E18383@sis.com.tw> Date: Mon, 13 Nov 2000 08:24:25 +0800 From: Ollie Lho MIME-Version: 1.0 To: Adam Agnew CC: mtd@infradead.org Subject: Re: Detecting the Disk-On-Chip 2800 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-mtd@infradead.org List-ID: Adam Agnew wrote: > > Is it common to be unable to detect the DOC after you've flashed a bios to > it? Can you get around that by explicitly stating the the memory address > and length for it? > - Adam Agnew > Adam, You should ask me directly, that is what I did to the driver ;-). The original firmware (IPL) in the DoC has 0x55AA signature in it. So the driver probe for it to determine if there is a DoC on the bus. After we reprogramming the IPL area, the signature is gone. You should CVS update your MTD source tree and reconfigure the kernel. There are two options, one is PROBE_HIGH, which will probe high address (near 4GB) rather than log address (under 1MB) for DoC. The other is PROBE_55AA, which probe the signature. If you are playing LinuxBIOS with SiS 630, please choose PROBE_HIGH == y, PROBE_55AA = n. Ollie To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org