From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx03.syneticon.net ([87.79.32.166]) by bombadil.infradead.org with esmtp (Exim 4.68 #1 (Red Hat Linux)) id 1K1oXU-0006tN-It for kexec@lists.infradead.org; Thu, 29 May 2008 20:15:57 +0000 Message-ID: <483F0EF3.3060500@wpkg.org> Date: Thu, 29 May 2008 22:15:47 +0200 From: Tomasz Chmielewski MIME-Version: 1.0 Subject: Re: kexec on mips - anyone has it working? References: <483BCB75.4050901@wpkg.org> <200805271449.45124.nschichan@freebox.fr> <483C4F73.4040909@wpkg.org> <200805291347.05196.nschichan@freebox.fr> In-Reply-To: <200805291347.05196.nschichan@freebox.fr> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Nicolas Schichan Cc: linux-mips@linux-mips.org, openwrt-devel@lists.openwrt.org, Kexec Mailing List Tmljb2xhcyBTY2hpY2hhbiBzY2hyaWViOgo+IE9uIFR1ZXNkYXkgMjcgTWF5IDIwMDggMjA6MTQ6 MTEgeW91IHdyb3RlOgo+PiBBYWgsIEkgc2VlLgo+Pgo+PiBBbnl3YXksIGl0IGRvZXNuJ3Qgd29y ayAtIHdpdGggb3Igd2l0aG91dCB0aGlzIHNsaWdodCBjaGFuZ2UgaW4KPj4gbWFjaGluZV9rZXhl Yy5jLCB3aXRoIGtleGVjIGNvbXBpbGVkIGZyb20gdGhlIHNvdXJjZXMgaW4gdGhlIGxpbmsgeW91 Cj4+IGdhdmUgb3Igd2l0aCBrZXhlYy10b29scy10ZXN0aW5nLTIwMDgwMzI0LCBpdCBqdXN0IGRv 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2008 01:36:26 +0100 (BST) Received: from p549F5155.dip.t-dialin.net ([84.159.81.85]:65001 "EHLO p549F5155.dip.t-dialin.net") by ftp.linux-mips.org with ESMTP id S28575670AbYE2UQA (ORCPT ); Thu, 29 May 2008 21:16:00 +0100 Received: from mx03.syneticon.net ([87.79.32.166]:64784 "EHLO mx03.syneticon.net") by lappi.linux-mips.net with ESMTP id S1108422AbYE2UPz (ORCPT ); Thu, 29 May 2008 22:15:55 +0200 Received: from localhost (filter1.syneticon.net [192.168.113.3]) by mx03.syneticon.net (Postfix) with ESMTP id 98DA095EE; Thu, 29 May 2008 22:15:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at mx03.syneticon.net Received: from mx03.syneticon.net ([192.168.113.4]) by localhost (mx03.syneticon.net [192.168.113.3]) (amavisd-new, port 10025) with ESMTP id cPPIvOZ8R+I2; Thu, 29 May 2008 22:15:48 +0200 (CEST) Received: from [192.168.10.145] (koln-4d0b776d.pool.mediaWays.net [77.11.119.109]) by mx03.syneticon.net (Postfix) with ESMTP; Thu, 29 May 2008 22:15:48 +0200 (CEST) Message-ID: <483F0EF3.3060500@wpkg.org> Date: Thu, 29 May 2008 22:15:47 +0200 From: Tomasz Chmielewski User-Agent: Thunderbird 2.0.0.12 (X11/20080305) MIME-Version: 1.0 To: Nicolas Schichan CC: linux-mips@linux-mips.org, Kexec Mailing List , openwrt-devel@lists.openwrt.org Subject: Re: kexec on mips - anyone has it working? References: <483BCB75.4050901@wpkg.org> <200805271449.45124.nschichan@freebox.fr> <483C4F73.4040909@wpkg.org> <200805291347.05196.nschichan@freebox.fr> In-Reply-To: <200805291347.05196.nschichan@freebox.fr> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 19380 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: mangoo@wpkg.org Precedence: bulk X-list: linux-mips Nicolas Schichan schrieb: > On Tuesday 27 May 2008 20:14:11 you wrote: >> Aah, I see. >> >> Anyway, it doesn't work - with or without this slight change in >> machine_kexec.c, with kexec compiled from the sources in the link you >> gave or with kexec-tools-testing-20080324, it just doesn't work on >> BCM43XX with OpenWRT patches. At least on Asus WL-500gP. > > I'm not familiar with broadcom CPU names, but isn't BCM43XX supposed > to be a Wifi chipset ? :) > > However, could you kexec a kernel from a kernel that has > CONFIG_MIPS_UNCACHED set (under "Kernel hacking", "run uncached")? > this will slow down the kernel that does the kexec, but if this works, > then it is most probably a cache problem. I guess I'm not that lucky. Either CONFIG_MIPS_UNCACHED slowed the device down so much that it didn't boot, or it didn't boot. Hey, isn't it the same? So either BCM43XX doesn't work very well with certain kernel options enabled/disabled, or OpenWRT patches still lack some features to make ASUS WL-500gP properly (added openwrt-devel to CC:). Without CONFIG_MIPS_UNCACHED it boots just fine. Here is what is displayed when doing "kexec -e" (using kexec-tools-testing-20080324): # kexec -e b44: eth0: powering down PHY Starting new kernel Will call new kernel at 00305000 Bye ... Below, a full bootup up to the point where it freezes with CONFIG_MIPS_UNCACHED enabled (every message is printed very fast, up until the last "usbcore", where nothing else shows up): CFE version 1.0.37 for BCM947XX (32bit,SP,LE) Build Date: �| 10�� 12 22:21:19 CST 2006 (root@localhost.localdomain) Copyright (C) 2000,2001,2002,2003 Broadcom Corporation. Initializing Arena Initializing Devices. et0: Broadcom BCM47xx 10/100 Mbps Ethernet Controller 3.90.7.0 rndis0: Broadcom USB RNDIS Network Adapter (P-t-P) CPU type 0x29006: 264MHz Total memory: 33554432 KBytes Total memory used by CFE: 0x80800000 - 0x8089AF40 (634688) Initialized Data: 0x808313D0 - 0x80833790 (9152) BSS Area: 0x80833790 - 0x80834F40 (6064) Local Heap: 0x80834F40 - 0x80898F40 (409600) Stack Area: 0x80898F40 - 0x8089AF40 (8192) Text (code) segment: 0x80800000 - 0x808313D0 (201680) Boot area (physical): 0x0089B000 - 0x008DB000 Relocation Factor: I:00000000 - D:00000000 Device eth0: hwaddr 00-0E-A6-F1-ED-3C, ipaddr 192.168.1.1, mask 255.255.255.0 gateway not set, nameserver not set Null Rescue Flag. Loader:raw Filesys:raw Dev:flash0.os File: Options:(null) Loading: .. 3768 bytes read Entry at 0x80001000 Closing network. Starting program at 0x80001000 Linux version 2.6.25.4 (build@dom) (gcc version 4.1.2) #5 Thu May 29 21:45:46 CEST 2008 console [early0] enabled CPU revision is: 00029006 (Broadcom BCM3302) ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x03, vendor 0x4243) ssb: Core 1 found: Fast Ethernet (cc 0x806, rev 0x06, vendor 0x4243) ssb: Core 2 found: Fast Ethernet (cc 0x806, rev 0x06, vendor 0x4243) ssb: Core 3 found: USB 1.1 Hostdev (cc 0x808, rev 0x03, vendor 0x4243) ssb: Core 4 found: PCI (cc 0x804, rev 0x08, vendor 0x4243) ssb: Core 5 found: MIPS 3302 (cc 0x816, rev 0x03, vendor 0x4243) ssb: Core 6 found: V90 (cc 0x807, rev 0x02, vendor 0x4243) ssb: Core 7 found: IPSEC (cc 0x80B, rev 0x00, vendor 0x4243) ssb: Core 8 found: MEMC SDRAM (cc 0x80F, rev 0x02, vendor 0x4243) ssb: Initializing MIPS core... ssb: set_irq: core 0x0806, irq 2 => 2 ssb: set_irq: core 0x0806, irq 3 => 3 ssb: set_irq: core 0x0804, irq 0 => 4 ssb: Sonics Silicon Backplane found at address 0x18000000 Serial init done. Determined physical RAM map: memory: 02000000 @ 00000000 (usable) Initrd not found or empty - disabling initrd Zone PFN ranges: Normal 0 -> 8192 Movable zone start PFN for each node early_node_map[1] active PFN ranges 0: 0 -> 8192 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128 Kernel command line: root=/dev/sda1 rootdelay=10 console=ttyS0,115200 Primary instruction cache 16kB, VIPT, 2-way, linesize 16 bytes. Primary data cache 16kB, 2-way, VIPT, cache aliases, linesize 16 bytes Synthesized clear page handler (26 instructions). Synthesized copy page handler (46 instructions). PID hash table entries: 128 (order: 7, 512 bytes) console handover: boot [early0] -> real [ttyS0] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) Memory: 29376k/32768k available (2409k kernel code, 3392k reserved, 392k data, 144k init, 0k highmem) Mount-cache hash table entries: 512 net_namespace: 440 bytes NET: Registered protocol family 16 SCSI subsystem initialized usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb With CONFIG_MIPS_UNCACHED disabled, it continues like here: ssb: PCIcore in host mode found Registering a PCI bus after boot PCI: Fixing up bridge 0000:00:00.0 PCI: Fixing up device 0000:00:00.0 PCI: Fixing latency timer of device 0000:00:00.0 to 168 PCI: Enabling device 0000:00:02.0 (0000 -> 0002) PCI: Fixing up device 0000:00:02.0 ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x0D, vendor 0x4243) ssb: Core 1 found: IEEE 802.11 (cc 0x812, rev 0x09, vendor 0x4243) ssb: Core 2 found: PCI (cc 0x804, rev 0x0C, vendor 0x4243) ssb: Core 3 found: PCMCIA (cc 0x80D, rev 0x07, vendor 0x4243) ssb: Sonics Silicon Backplane found on PCI device 0000:00:02.0 NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 1024 (order: 1, 8192 bytes) TCP bind hash table entries: 1024 (order: 0, 4096 bytes) TCP: Hash tables configured (established 1024 bind 1024) TCP reno registered detected lzma initramfs initramfs: LZMA lc=1,lp=2,pb=2,origSize=512 squashfs: version 3.0 (2006/03/15) Phillip Lougher Registering mini_fo version $Id$ (...) -- Tomasz Chmielewski http://wpkg.org