From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from majordomo by infradead.org with local (Exim 3.20 #2) id 14iyXY-0007af-00 for mtd-list@infradead.org; Fri, 30 Mar 2001 14:02:08 +0100 Received: from mail.utfors.se ([195.58.103.125]) by infradead.org with esmtp (Exim 3.20 #2) id 14iyXT-0007a9-00 for mtd@infradead.org; Fri, 30 Mar 2001 14:02:03 +0100 Received: from Win1 (hidden-user@[212.105.56.242]) by mail.utfors.se (8.8.8/8.8.8) with SMTP id PAA29449 for ; Fri, 30 Mar 2001 15:01:15 +0200 (MET DST) Reply-To: From: "Joakim Tjernlund" To: Subject: Nand Flash & JFFS Date: Fri, 30 Mar 2001 15:01:55 +0200 Message-ID: <000f01c0b919$99886e30$0a01a8c0@Win1> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0010_01C0B92A.5D113E30" In-Reply-To: Sender: owner-mtd@infradead.org List-ID: This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C0B92A.5D113E30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi all We are buliding a custom PPC860 board, which will use JFFS/JFFS2 as a root file system which will hold all files we need. The FS must survive sudden power loss. My plan was to use NOR flash(128MB or more)which will partioned into a Firmware/boot, raw linux kernel partition(if we can't find a boot SW will can boot linux from JFFS) and the rest will linux root FS with our apps. Now, our HW guy wants to put NAND flash on since it is cheaper and has higher density. I dont think it's a good idea to have boot code in NAND flash due to the possibility of bad blocks, so I envision a board with a NOR flash as boot device and then we could use NAND for a raw linux kernel partition and JFFS partition. Is this a good idea? Does JFFS/MTD support NAND flashes well yet? Can it handle bad blocks? Which chip models? Which geometries are supported(4x8, 2x8 1x8)? Can RedBoot(when JFFS support has been impl.) read a kernel from JFFS and boot it? Regards Joakim Tjernlund ------=_NextPart_000_0010_01C0B92A.5D113E30 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="winmail.dat" eJ8+IjgNAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAEIgAcAGAAAAElQTS5NaWNy b3NvZnQgTWFpbC5Ob3RlADEIAQ2ABAACAAAAAgACAAEGgAMADgAAANEHAwAeAA8AAQAAAAUADgEB A5AGAJQHAAAlAAAACwACAAEAAAALACMAAAAAAAMAJgAAAAAACwApAAAAAAADAC4AAAAAAAMANgAA AAAAHgBwAAEAAAASAAAATmFuZCBGbGFzaCAmIEpGRlMAAAACAXEAAQAAABYAAAABwLkZmOiOxmcL Bw1KOqg2k5bkHZNYAAACAR0MAQAAACIAAABTTVRQOkpPQUtJTS5USkVSTkxVTkRATFVNRU5USVMu U0UAAAALAAEOAAAAAEAABg4ATrR3GbnAAQIBCg4BAAAAGAAAAAAAAAAcXUkejweGRZqdZW9TFZa8 4oAAAAMAFA4BAAAACwAfDgEAAAACAQkQAQAAAIADAAB8AwAAWwUAAExaRnWpQwHSAwAKAHJjcGcx MjXiMgNDdGV4BUEBAwH3/wqAAqQD5AcTAoAP8wBQBFY/CFUHshElDlEDAQIAY2jhCsBzZXQyBgAG wxEl9jMERhO3MBIsETMI7wn3tjsYHw4wNREiDGBjAFAzCwkBZDM2FlALpiBIfGkgB0AYAAqxCoQK gFcGZR0QGCAgYnVsaQpkC4BnHRAgY3VzgnQDcCBQUEM4HDFDBuALESwgd2gN4GgfIHADEAMgH0Ae IEpGRuxTLyFyFEBhBCAfEANgNG90HVRmAxAeIHN5rR9QZR+AIIloBvBkHRJWICMSBCB3HiBuCeBk MC4gVGgeICGQIG1HH0EjUAhwdml2I0F15mQBAAOgcG8lcAXAF7DlBBAuHVRNeSegC2ADoI53IiEf YCEjTk9SJQARC2BzaCgOIDhNQm4gBbEEYBggKSCJCrF0dmkCIAmAIAuAKYEfEEbYaXJtKUAYIC8G 4CKQMyBgHVRyYQfgHqBudWh4IGsEkWUsBSxSKGsGkCViYwBwJwVAIxBu7ySxIAEikAYAVyDUMJEx VLcuxANSIWMpHRAxEXQmEf8YIB9QHVQg4y7EInImMgPwzzQQKuAIcB0QcHAoRh1ULk4nwCBgNnJI McBndU8o0ClAAjApY3B1BUBOeEFORCokKuADoACQbr5jHiAv0CywBCAT0GU2sN8SgTPSE+AEICCQ ZyYQBcDTJ3EAkHR5KFVJPJACIas0AQuAazrBJyIyZyKA/yyhAQAfECmBE+AnETFjBaD3AQAssTmK ZApQKXI0EiewuQQQaWIDEDzhKuBmHVQMYmEksAJgb2Nrc/0gYHMpkD2ACfAm8ACQOkH/MUILETYU HxAp9yISMWMBAP8m8DqhM9ULkDSkMHEIYCSh/ymzOaMFsSJRLp8vpjPDIXK7L4g2+0kpYSCQPos/ HVrMRG8HkSFzTVQ5wCbA3zbAF8E5iSVDIQF5FCBOpf5DA5E60RPgMRAjMUNYTqW+VyCTE9AFICsR AQBsVAz8Z2UDcBQgCIEiMR5RUFWhCYAoNHg4IGAyWABUIDFYAClSKVIJgEJ9IoEoIIAngUvDUFY7 8mLrCeEssG0LUC4zsBggQ2F/HxAvJTMnHVQz0jFjL9A/XiBeoB1aXqBZcGcLEXNrXzZgh0ogIGsH cCXwai8EkQpAMRAdVH1ioB4AQhABAAAAPAAAADxFQURCMTBCQUMyNjZBMTRBODVFQ0JGODY4NkE3 M0UzMTBBOTEyNUBrb2xrcmFiYmkuZmxhZ2EuaXM+AAMACVkBAAAAAwAAgAggBgAAAAAAwAAAAAAA AEYAAAAAEIUAAAAAAAADAAiACCAGAAAAAADAAAAAAAAARgAAAABShQAAfW4BAB4ACYAIIAYAAAAA AMAAAAAAAABGAAAAAFSFAAABAAAABAAAADkuMAALAAqACCAGAAAAAADAAAAAAAAARgAAAAAGhQAA AAAAAAMAC4AIIAYAAAAAAMAAAAAAAABGAAAAAAGFAAAAAAAACwAQgAggBgAAAAAAwAAAAAAAAEYA AAAAA4UAAAAAAAALABWACCAGAAAAAADAAAAAAAAARgAAAAAOhQAAAAAAAAMAFoAIIAYAAAAAAMAA AAAAAABGAAAAABGFAAAAAAAAAwAYgAggBgAAAAAAwAAAAAAAAEYAAAAAGIUAAAAAAAACAfgPAQAA ABAAAAAcXUkejweGRZqdZW9TFZa8AgH6DwEAAAAQAAAAHF1JHo8HhkWanWVvUxWWvAIB+w8BAAAA eAAAAAAAAAA4obsQBeUQGqG7CAArKlbCAABtc3BzdC5kbGwAAAAAAE5JVEH5v7gBAKoAN9luAAAA QzpcRG9jdW1lbnRzIGFuZCBTZXR0aW5nc1xKb2FraW0gVGplcm5sdW5kXG91dGxvb2t0ZXN0XG91 dHRlc3QucHN0AAMA/g8FAAAAAwANNP03AAACAX8AAQAAADEAAAAwMDAwMDAwMDFDNUQ0OTFFOEYw Nzg2NDU5QTlENjU2RjUzMTU5NkJDMDRGMDNEMDAAAAAAAwAGECsUWY0DAAcQDgMAAAMAEBAAAAAA AwAREAAAAAAeAAgQAQAAAGUAAABISUFMTFdFQVJFQlVMSURJTkdBQ1VTVE9NUFBDODYwQk9BUkQs V0hJQ0hXSUxMVVNFSkZGUy9KRkZTMkFTQVJPT1RGSUxFU1lTVEVNV0hJQ0hXSUxMSE9MREFMTEZJ TEVTV0VOAAAAADXD ------=_NextPart_000_0010_01C0B92A.5D113E30-- To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org