Date: Mon, 27 May 2019 12:22:36 +0100 From: Balanga Bar <balanga.bar@gmail.com> To: Michael Zhilin <mizhka@gmail.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Debugging a hang during boot Message-ID: <CADocevCiYMvA8p-u%2BgFmf7LSHggKeN0TYLvTUS0tuh03asR%2Bfg@mail.gmail.com> In-Reply-To: <CAF19XBKPpOhe7g7WLpQ9NobkJc=u3R=XfZL4juu6P5MHP=LFDw@mail.gmail.com> References: <CADocevDudfQ9twD0WuBTCCmjV_TW28WWAptpFMh6eWtyr8RhaA@mail.gmail.com> <CAF19XBKPpOhe7g7WLpQ9NobkJc=u3R=XfZL4juu6P5MHP=LFDw@mail.gmail.com>
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Many thanks. My DREAMPLUG-1001 conf file has the following - so I assume I'm ready to go... although not sure when to enter Alt-Brk # Debugging #options BREAK_TO_DEBUGGER options ALT_BREAK_TO_DEBUGGER options DDB options KDB #options DIAGNOSTIC #options INVARIANTS #Enable calls of extra sanity checking #options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS #options WITNESS #Enable checks to detect deadlocks and cycles #options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed #options WITNESS_KDB On Mon, May 27, 2019 at 8:57 AM Michael Zhilin <mizhka@gmail.com> wrote: > Hi, > > As UART works, you can use DDB for debugging: > > https://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-online-ddb.html > > To enter DDB there are a lot of ways: BREAK_TO_DEBUGGER or > ALT_BREAK_TO_DEBUGGER can help you. > > Thanks! > > On Mon, May 27, 2019 at 12:30 AM Balanga Bar <balanga.bar@gmail.com> > wrote: > >> Can anyone suggest how to go about debugging a hang during booting? >> >> I built a kernel for a GoFlex Home unit using DREAMPLUG-1001 without any >> amendments. >> >> Here is my boot log:- >> >> ========================================================================== >> >> Booting [/boot/kernel/kernel]... >> >> >> Using DTB compiled into kernel. >> >> >> / - \ | Kernel entry at 0x1200180... >> >> >> Kernel args: (null) >> >> >> Copyright (c) 1992-2017 The FreeBSD Project. >> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 >> The Regents of the University of California. All rights reserved. >> FreeBSD is a registered trademark of The FreeBSD Foundation. >> FreeBSD 11.1-RELEASE #0: Sun May 26 16:53:47 UTC 2019 >> root@11-1:/usr/obj/arm.arm/usr/src/sys/DREAMPLUG-1001 arm >> FreeBSD clang version 4.0.0 (tags/RELEASE_400/final 297347) (based on >> LLVM 4.0.0) >> CPU: Feroceon 88FR131 rev 1 (**unknown 4** core) >> Little-endian DC enabled IC disabled WA disabled DC streaming enabled >> BTB disabled L2 enabled L2 prefetch enabled >> WB enabled LABT branch prediction disabled >> 16KB/32B 4-way instruction cache >> 16KB/32B 4-way write-back-locking-C data cache >> real memory = 134213632 (127 MB) >> avail memory = 121282560 (115 MB) >> SOC: Marvell 88F6281 rev A1, TClock 200MHz >> Instruction cache prefetch disabled, data cache prefetch disabled >> 256KB 4-way set-associative write-through unified L2 cache >> random: entropy device external interface >> ofwbus0: <Open Firmware Device Tree> >> simplebus0: <Flattened device tree simple bus> on ofwbus0 >> cpulist0: <Open Firmware CPU Group> on ofwbus0 >> cpu0: <Open Firmware CPU> on cpulist0 >> localbus0: <Marvell device bus> on ofwbus0 >> ic0: <Marvell Integrated Interrupt Controller> mem 0x20200-0x2023b on >> simplebus0 >> timer0: <Marvell CPU Timer> mem 0x20300-0x2032f irq 1 on simplebus0 >> Event timer "CPUTimer0" frequency 200000000 Hz quality 1000 >> Timecounter "CPUTimer1" frequency 200000000 Hz quality 1000 >> gpio0: <Marvell Integrated GPIO Controller> mem 0x10100-0x1011f irq >> 35,36,37,38,39,40,41 on simplebus0 >> rtc0: <Marvell Integrated RTC> mem 0x10300-0x10307 on simplebus0 >> twsi0: <Marvell Integrated I2C Bus Controller> mem 0x11000-0x1101f irq >> 43 on simplebus0 >> iicbus0: <Philips I2C bus> on twsi0 >> iic0: <I2C generic I/O> on iicbus0 >> mge0: <Marvell Gigabit Ethernet controller> mem 0x72000-0x73fff irq >> 12,13,14,11,46 on simplebus0 >> mge0: PHY0 attached, phy_sc points to mge0 >> mge0: Ethernet address: 00:10:75:28:cc:00 >> miibus0: <MII bus> on mge0 >> e1000phy0: <Marvell 88E1116R Gigabit PHY> PHY 0 on miibus0 >> e1000phy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, >> 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, auto >> mge1: <Marvell Gigabit Ethernet controller> mem 0x76000-0x77fff irq >> 16,17,18,15,47 on simplebus0 >> mge1: PHY1 attached, phy_sc points to mge0 >> mge1: MII failed to find PHY >> device_attach: mge1 attach returned 6 >> uart0: <16550 or compatible> mem 0x12000-0x1201f irq 33 on simplebus0 >> uart0: console (1056,n,8,1) >> uart1: <16550 or compatible> mem 0x12100-0x1211f irq 34 on simplebus0 >> cesa0: <Marvell Cryptographic Engine and Security Accelerator> mem >> 0x30000-0x30fff,0x3d000-0x3dfff irq 22 on simplebus0 >> ehci0: <Marvell Integrated USB 2.0 controller> mem 0x50000-0x50fff irq >> 48,19 on simplebus0 >> usbus0: EHCI version 1.0 >> usbus0 on ehci0 >> mvs0: <Marvell 88F6281 SATA controller> mem 0x80000-0x85fff irq 21 on >> simplebus0 >> mvs0: Gen-IIe, 2 3Gbps ports, Port Multiplier supported with FBS >> mvsch0: <Marvell SATA channel> at channel 0 on mvs0 >> mvsch1: <Marvell SATA channel> at channel 1 on mvs0 >> cryptosoft0: <software crypto> >> Timecounters tick every 10.000 msec >> >> usbus0: 480Mbps High Speed USB v2.0 >> _______________________________________________ >> freebsd-arm@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-arm >> To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" >> >
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