From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AF8EC433EF for ; Wed, 23 Feb 2022 16:28:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233331AbiBWQ24 (ORCPT ); Wed, 23 Feb 2022 11:28:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230215AbiBWQ2z (ORCPT ); Wed, 23 Feb 2022 11:28:55 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0DFAE009 for ; Wed, 23 Feb 2022 08:28:26 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 2A8FFB81EB0 for ; Wed, 23 Feb 2022 16:28:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 40AC8C340E7; Wed, 23 Feb 2022 16:28:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645633703; bh=WImtVpnh1zVUtarGjZ58o12AGwBq7JIEUVHkxtoCtO4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=L5vK3wSJgHyPdXcz2XHHPVjthob7t9dn+ImyBLuuDb8Xcy2k1L7fg9GtdvajmpQ2o 594z/K4YmRXVCNZxAny57CWz8BJZMm2Nxcq1GZblkY56GwKjygb0r32/0hmTfwQDPQ mnXgjpQX/K+P722yZwzVPEJE1v3KdyfpffrD1t4IXFRnlZqvqJz2IsMbwW4/C64inH Ut+TB/BiN4O+xoO2rLr6obQQuV+mAb1EEwl9ZNGDGO9OzUIYNx/FtJXPN++rTsWRs/ pvJUGOuqjwXMBUU6XzM7BXuPgSd1Nda1VEpaE0fytz4fpuidcN7nXcVgL/h7YWmQg6 HAoR0ohMUBhvA== Message-ID: Date: Wed, 23 Feb 2022 10:28:21 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH] [RFC] spi: cadence-quadspi: Disable DAC on SoCFPGA Content-Language: en-US To: Marek Vasut , linux-spi@vger.kernel.org Cc: Pratyush Yadav References: <20220221043238.295369-1-marex@denx.de> <79280984-e71d-e767-bb67-bd2a2fe31858@kernel.org> <04e70d1a-c07b-e1dc-aea6-36fe9b7ce667@kernel.org> <8060ae0e-700e-3b72-3ab9-e7ca8e19ad9e@denx.de> <8dc7a7d6-d24f-b3a6-32b9-64cdb8c6f3be@kernel.org> From: Dinh Nguyen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org On 2/22/22 18:54, Marek Vasut wrote: > On 2/22/22 22:32, Dinh Nguyen wrote: >> >> >> On 2/22/22 12:30, Marek Vasut wrote: >>> On 2/22/22 16:49, Dinh Nguyen wrote: >>>> >>>> >>>> On 2/21/22 11:05, Marek Vasut wrote: >>>>> On 2/21/22 17:38, Dinh Nguyen wrote: >>>>>> >>>>>> >>>>>> On 2/20/22 22:32, Marek Vasut wrote: >>>>>>> On SoCFPGA Gen5, DAC memcpy_fromio() in cqspi_direct_read_execute() >>>>>>> leads to data abort, disable DAC to avoid triggering it: >>>>>>> >>>>>>> Unhandled fault: imprecise external abort (0x1406) at 0x0400d3e9 >>>>>>> [0400d3e9] *pgd=00000000 >>>>>>> >>>>>>> Signed-off-by: Marek Vasut >>>>>>> Cc: Dinh Nguyen >>>>>>> Cc: Pratyush Yadav >>>>>>> --- >>>>>>>   drivers/spi/spi-cadence-quadspi.c | 2 +- >>>>>>>   1 file changed, 1 insertion(+), 1 deletion(-) >>>>>>> >>>>>>> diff --git a/drivers/spi/spi-cadence-quadspi.c >>>>>>> b/drivers/spi/spi-cadence-quadspi.c >>>>>>> index b808c94641fa6..65f2c2449be09 100644 >>>>>>> --- a/drivers/spi/spi-cadence-quadspi.c >>>>>>> +++ b/drivers/spi/spi-cadence-quadspi.c >>>>>>> @@ -1870,7 +1870,7 @@ static const struct cqspi_driver_platdata >>>>>>> intel_lgm_qspi = { >>>>>>>   }; >>>>>>>   static const struct cqspi_driver_platdata socfpga_qspi = { >>>>>>> -    .quirks = CQSPI_NO_SUPPORT_WR_COMPLETION, >>>>>>> +    .quirks = CQSPI_DISABLE_DAC_MODE | >>>>>>> CQSPI_NO_SUPPORT_WR_COMPLETION, >>>>>>>   }; >>>>>>>   static const struct cqspi_driver_platdata versal_ospi = { >>>>>> >>>>>> Acked-by: Dinh Nguyen >>>>> >>>>> Is this DAC really not working on socfpga gen5 or is there some >>>>> other issue ? >>>> >>>> I don't know the answer to this question. What is the DAC in the >>>> QSPI module and how do I go about testing it? >>> >>> DAC = direct access. >>> >>> How do you go about testing this -- compile kernel with/without this >>> patch, boot on SoCFPGA Gen5 with QSPI NOR attached, the kernel >>> crashes without this patch on imprecise external abort. >> >> Hmm...I just tested v5.17-rc3 on a C5 board and QSPI looks to be >> working fine: >> >> [    1.744489] spi-nor spi1.0: found n25q512ax3, expected mt25qu02g >> [    1.750534] dma-pl330 ffe01000.pdma: Reset Channel-0  CS-f FTC-40000 >> [    1.756941] spi-nor spi1.0: n25q512ax3 (65536 Kbytes) >> [    1.762369] 2 fixed-partitions partitions found on MTD device >> ff705000.spi.0 >> [    1.769425] Creating 2 MTD partitions on "ff705000.spi.0": >> [    1.774925] 0x000000000000-0x000000800000 : "Flash 0 Raw Data" >> [    1.781942] 0x000000800000-0x000008000000 : "Flash 0 jffs2 Filesystem" >> [    1.788468] mtd: partition "Flash 0 jffs2 Filesystem" extends >> beyond the end of device "ff705000.spi.0" -- size truncated to 0x3800000 > > I wonder if we might be missing some clock enable somewhere. > > Can you mail me the whole boot log ? (I'm using u-boot 2022.01 btw.) I tested with U-Boot 2022.01 as well: => run nfsboot_dinh Kernel image @ 0x1000000 [ 0x000000 - 0x54edd0 ] ## Flattened Device Tree blob at 02000000 Booting using the fdt blob at 0x2000000 Loading Device Tree to 09ff8000, end 09fffeb1 ... OK Starting kernel ... Deasserting all peripheral resets [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 5.17.0-rc3 (dinguyen@linux-builds1) (arm-linux-gnue abihf-gcc (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0, GNU ld (GNU Binutils for U buntu) 2.30) #1 SMP Wed Feb 23 08:51:18 CST 2022 [ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instructio n cache [ 0.000000] OF: fdt: Machine model: Altera SOCFPGA Cyclone V SoC Development Kit [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000000000000-0x000000002fffffff] [ 0.000000] HighMem [mem 0x0000000030000000-0x000000003fffffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000000000-0x000000003fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000003fffffff] [ 0.000000] percpu: Embedded 15 pages/cpu s29068 r8192 d24180 u61440 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 260608 [ 0.000000] Kernel command line: root=/dev/nfs rw nfsroot=10.122.105.166:/hom e/dnguyen/rootfs_yocto,tcp ip=dhcp [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, li near) [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Memory: 1026164K/1048576K available (9216K kernel code, 769K rwda ta, 1888K rodata, 1024K init, 139K bss, 22412K reserved, 0K cma-reserved, 262144 K highmem) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] ftrace: allocating 30749 entries in 91 pages [ 0.000000] ftrace: allocated 91 pages with 5 groups [ 0.000000] trace event string verifier disabled [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] rcu: RCU event tracing is enabled. [ 0.000000] Rude variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jif fies. [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] L2C-310 erratum 769419 enabled [ 0.000000] L2C-310 enabling early BRESP for Cortex-A9 [ 0.000000] L2C-310 full line of zeros enabled for Cortex-A9 [ 0.000000] L2C-310 ID prefetch enabled, offset 8 lines [ 0.000000] L2C-310 dynamic clock gating enabled, standby mode enabled [ 0.000000] L2C-310 cache controller enabled, 8 ways, 512 kB [ 0.000000] L2C-310: CACHE_ID 0x410030c9, AUX_CTRL 0x76460001 [ 0.000000] random: get_random_bytes called from start_kernel+0x528/0x6cc wit h crng_init=0 [ 0.000000] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max _idle_ns: 19112604467 ns [ 0.000000] sched_clock: 32 bits at 100MHz, resolution 10ns, wraps every 2147 4836475ns [ 0.000017] Switching to timer-based delay loop, resolution 10ns [ 0.000303] Console: colour dummy device 80x30 [ 0.000691] printk: console [tty0] enabled [ 0.000734] Calibrating delay loop (skipped), value calculated using timer fr equency.. 200.00 BogoMIPS (lpj=1000000) [ 0.000765] pid_max: default: 32768 minimum: 301 [ 0.000894] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linea r) [ 0.000923] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) [ 0.001517] CPU: Testing write buffer coherency: ok [ 0.001575] CPU0: Spectre v2: using BPIALL workaround [ 0.001761] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.002324] cblist_init_generic: Setting adjustable number of callback queues . [ 0.002356] cblist_init_generic: Setting shift to 1 and lim to 1. [ 0.002460] Setting up static identity map for 0x100000 - 0x100060 [ 0.002595] rcu: Hierarchical SRCU implementation. [ 0.002912] smp: Bringing up secondary CPUs ... [ 0.003517] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.003534] CPU1: Spectre v2: using BPIALL workaround [ 0.003668] smp: Brought up 1 node, 2 CPUs [ 0.003695] SMP: Total of 2 processors activated (400.00 BogoMIPS). [ 0.003714] CPU: All CPU(s) started in SVC mode. [ 0.004253] devtmpfs: initialized [ 0.008177] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4 [ 0.008388] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, ma x_idle_ns: 19112604462750000 ns [ 0.008426] futex hash table entries: 512 (order: 3, 32768 bytes, linear) [ 0.009172] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 0.010014] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.010998] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers. [ 0.011030] hw-breakpoint: maximum watchpoint size is 4 bytes. [ 0.029091] vgaarb: loaded [ 0.029322] SCSI subsystem initialized [ 0.029505] usbcore: registered new interface driver usbfs [ 0.029563] usbcore: registered new interface driver hub [ 0.029619] usbcore: registered new device driver usb [ 0.029847] usb_phy_generic soc:usbphy: supply vcc not found, using dummy reg ulator [ 0.030261] pps_core: LinuxPPS API ver. 1 registered [ 0.030285] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giome tti giometti@linux.it [ 0.030319] PTP clock support registered [ 0.030470] FPGA manager framework [ 0.031309] clocksource: Switched to clocksource timer1 [ 0.065908] NET: Registered PF_INET protocol family [ 0.066131] IP idents hash table entries: 16384 (order: 5, 131072 bytes, line ar) [ 0.067138] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear) [ 0.067193] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear) [ 0.067276] TCP bind hash table entries: 8192 (order: 4, 65536 bytes, linear) [ 0.067400] TCP: Hash tables configured (established 8192 bind 8192) [ 0.067523] UDP hash table entries: 512 (order: 2, 16384 bytes, linear) [ 0.067580] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear) [ 0.067751] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 0.071713] RPC: Registered named UNIX socket transport module. [ 0.071746] RPC: Registered udp transport module. [ 0.071762] RPC: Registered tcp transport module. [ 0.071776] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.071799] PCI: CLS 0 bytes, default 64 [ 0.725286] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counter s available [ 0.726528] workingset: timestamp_bits=30 max_order=18 bucket_order=0 [ 0.732082] NFS: Registering the id_resolver key type [ 0.732133] Key type id_resolver registered [ 0.732151] Key type id_legacy registered [ 0.732174] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 0.732909] ntfs: driver 2.1.32 [Flags: R/W]. [ 0.733097] jffs2: version 2.2. (NAND) (c) 2001-2006 Red Hat, Inc. [ 0.733690] bounce: pool size: 64 pages [ 0.733795] io scheduler mq-deadline registered [ 0.733816] io scheduler kyber registered [ 0.737748] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled [ 0.738777] ffc02000.serial0: ttyS0 at MMIO 0xffc02000 (irq = 43, base_baud = 6250000) is a 16550A [ 1.377771] printk: console [ttyS0] enabled [ 1.382603] ffc03000.serial1: ttyS1 at MMIO 0xffc03000 (irq = 44, base_baud = 6250000) is a 16550A [ 1.393068] brd: module loaded [ 1.400992] loop: module loaded [ 1.407175] CAN device driver interface [ 1.411647] c_can_platform ffc00000.can: c_can_platform device registered (re gs=(ptrval), irq=30) [ 1.420796] socfpga-dwmac ff702000.ethernet: IRQ eth_wake_irq not found [ 1.427438] socfpga-dwmac ff702000.ethernet: IRQ eth_lpi not found [ 1.433718] socfpga-dwmac ff702000.ethernet: PTP uses main clock [ 1.439902] socfpga-dwmac ff702000.ethernet: Version ID not available [ 1.446361] socfpga-dwmac ff702000.ethernet: DWMAC1000 [ 1.451588] socfpga-dwmac ff702000.ethernet: DMA HW capability register suppo rted [ 1.459053] socfpga-dwmac ff702000.ethernet: RX Checksum Offload Engine suppo rted [ 1.466524] socfpga-dwmac ff702000.ethernet: COE Type 2 [ 1.471743] socfpga-dwmac ff702000.ethernet: TX Checksum insertion supported [ 1.478770] socfpga-dwmac ff702000.ethernet: Enhanced/Alternate descriptors [ 1.485724] socfpga-dwmac ff702000.ethernet: Extended descriptors not support ed [ 1.493023] socfpga-dwmac ff702000.ethernet: Ring mode enabled [ 1.498848] socfpga-dwmac ff702000.ethernet: device MAC address 0a:70:a0:4c:e 4:6f [ 1.514527] Micrel KSZ9021 Gigabit PHY stmmac-0:04: attached PHY driver (mii_ bus:phy_addr=stmmac-0:04, irq=POLL) [ 1.526181] dwc2 ffb40000.usb: supply vusb_d not found, using dummy regulator [ 1.533470] dwc2 ffb40000.usb: supply vusb_a not found, using dummy regulator [ 1.540831] dwc2 ffb40000.usb: EPs: 16, dedicated fifos, 8064 entries in SPRA M [ 1.548368] dwc2 ffb40000.usb: DWC OTG Controller [ 1.553116] dwc2 ffb40000.usb: new USB bus registered, assigned bus number 1 [ 1.560172] dwc2 ffb40000.usb: irq 45, io mem 0xffb40000 [ 1.566125] hub 1-0:1.0: USB hub found [ 1.569911] hub 1-0:1.0: 1 port detected [ 1.574627] usbcore: registered new interface driver usb-storage [ 1.580807] i2c_dev: i2c /dev entries driver [ 1.585982] Synopsys Designware Multimedia Card Interface Driver [ 1.592409] ledtrig-cpu: registered to indicate activity on CPUs [ 1.598541] usbcore: registered new interface driver usbhid [ 1.604129] usbhid: USB HID core driver [ 1.609205] NET: Registered PF_INET6 protocol family [ 1.615138] Segment Routing with IPv6 [ 1.618827] In-situ OAM (IOAM) with IPv6 [ 1.622844] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver [ 1.629277] NET: Registered PF_PACKET protocol family [ 1.634369] NET: Registered PF_KEY protocol family [ 1.639152] can: controller area network core [ 1.643568] NET: Registered PF_CAN protocol family [ 1.648351] can: raw protocol [ 1.651328] can: broadcast manager protocol [ 1.655508] can: netlink gateway - max_hops=1 [ 1.659989] 8021q: 802.1Q VLAN Support v1.8 [ 1.664225] Key type dns_resolver registered [ 1.668566] ThumbEE CPU extension supported. [ 1.672846] Registering SWP/SWPB emulation handler [ 1.681725] at24 0-0051: supply vcc not found, using dummy regulator [ 1.689287] at24 0-0051: 4096 byte 24c32 EEPROM, writable, 32 bytes/write [ 1.701762] rtc-ds1307 0-0068: registered as rtc0 [ 1.708271] rtc-ds1307 0-0068: setting system clock to 2018-03-17T01:43:02 UT C (1521250982) [ 1.720866] dma-pl330 ffe01000.pdma: Loaded driver for PL330 DMAC-341330 [ 1.727602] dma-pl330 ffe01000.pdma: DBUFF-512x8bytes Num_Chans-8 Num _Peri-32 Num_Events-8 [ 1.736593] spi-nor spi1.0: found n25q512ax3, expected mt25qu02g [ 1.742662] dma-pl330 ffe01000.pdma: Reset Channel-0 CS-f FTC-40000 [ 1.749048] spi-nor spi1.0: n25q512ax3 (65536 Kbytes) [ 1.754479] 2 fixed-partitions partitions found on MTD device ff705000.spi.0 [ 1.761556] Creating 2 MTD partitions on "ff705000.spi.0": [ 1.767035] 0x000000000000-0x000000800000 : "Flash 0 Raw Data" [ 1.774038] 0x000000800000-0x000008000000 : "Flash 0 jffs2 Filesystem" [ 1.780562] mtd: partition "Flash 0 jffs2 Filesystem" extends beyond the end of device "ff705000.spi.0" -- size truncated to 0x3800000 [ 1.794865] dw_mmc ff704000.dwmmc0: IDMAC supports 32-bit address mode. [ 1.801560] dw_mmc ff704000.dwmmc0: Using internal DMA controller. [ 1.807737] dw_mmc ff704000.dwmmc0: Version ID is 240a [ 1.812917] dw_mmc ff704000.dwmmc0: DW MMC controller at irq 38,32 bit host d ata width,1024 deep fifo [ 1.822428] dw_mmc ff704000.dwmmc0: Got CD GPIO [ 1.827005] mmc_host mmc0: card is polling. [ 1.841337] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 400000Hz , actual 396825HZ div = 63) [ 1.865228] socfpga-dwmac ff702000.ethernet eth0: PHY [stmmac-0:04] driver [M icrel KSZ9021 Gigabit PHY] (irq=POLL) [ 1.875810] socfpga-dwmac ff702000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 1.886679] socfpga-dwmac ff702000.ethernet eth0: No Safety Features support found [ 1.897468] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 50000000 Hz, actual 50000000HZ div = 0) [ 1.904448] socfpga-dwmac ff702000.ethernet eth0: registered PTP clock [ 1.907277] mmc0: new high speed SDHC card at address 0001 [ 1.919446] socfpga-dwmac ff702000.ethernet eth0: configuring for phy/rgmii l ink mode [ 1.919714] mmcblk0: mmc0:0001 SD8GB 7.24 GiB [ 1.933945] mmcblk0: p1 p2 p3 [ 6.072231] socfpga-dwmac ff702000.ethernet eth0: Link is Up - 1Gbps/Full - f low control rx/tx [ 6.080856] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 6.131319] Sending DHCP requests .., OK [ 9.375268] IP-Config: Got DHCP answer from 10.122.105.2, my address is 10.12 2.105.45 [ 9.383105] IP-Config: Complete: [ 9.386328] device=eth0, hwaddr=0a:70:a0:4c:e4:6f, ipaddr=10.122.105.45, mask=255.255.255.0, gw=10.122.105.1 [ 9.396572] host=10.122.105.45, domain=an.intel.com, nis-domain=(none) [ 9.403526] bootserver=10.122.105.30, rootserver=10.122.105.166, rootpat h= [ 9.403536] nameserver0=10.248.2.1, nameserver1=10.2.71.6, nameserver2=1 0.31.40.4 [ 9.419206] dw-apb-uart ffc02000.serial0: forbid DMA for kernel console [ 9.440415] VFS: Mounted root (nfs filesystem) on device 0:13. [ 9.446908] devtmpfs: mounted [ 9.452213] Freeing unused kernel image (initmem) memory: 1024K [ 9.491560] Run /sbin/init as init process INIT: version 2.88 booting [ 9.707166] random: fast init done Starting Bootlog daemon: bootlogd. mount: mounting 10.122.105.166:/home/dnguyen/rootfs_yocto on / failed: Invalid a rgument Starting portmap daemon... INIT: Entering runlevel: 5 Starting OpenBSD Secure Shell server: sshd [ 10.594905] random: sshd: uninitialized urandom read (32 bytes read) done. creating NFS state directory: done starting 8 nfsd kernel threads: rpc.nfsd: unable to resolve ANYADDR:nfs to inet address: Servname not supported for ai_socktype rpc.nfsd: unable to set any sockets for nfsd done starting mountd: done starting statd: done Starting system log daemon...start-stop-daemon: can't execute '/sbin/syslogd': N o such file or directory 1 Starting kernel log daemon...start-stop-daemon: can't execute '/sbin/klogd': No such file or directory 1 Starting Lighttpd Web Server: [ 10.978345] random: lighttpd: uninitialized ura ndom read (4096 bytes read) lighttpd. Stopping Bootlog daemon: bootlogd. Poky 8.0 (Yocto Project 1.3 Reference Distro) 1.3 socfpga_cyclone5 ttyS0 socfpga_cyclone5 login: root login[158]: root login on `ttyS0' root@socfpga_cyclone5:~#