[PATCH 0/4] staging: mt7621-pci: Handle minor issues

Greg Ungerer gerg at kernel.org
Wed Jun 26 12:18:06 UTC 2019


Hi Sergio,

On 26/6/19 5:10 pm, Sergio Paracuellos wrote:
> On Wed, Jun 26, 2019 at 5:31 AM Greg Ungerer <gerg at kernel.org> wrote:
>> On 25/6/19 10:47 pm, Sergio Paracuellos wrote:
>>> On Tue, Jun 25, 2019 at 7:18 AM Sergio Paracuellos
>>> <sergio.paracuellos at gmail.com> wrote:
>>>> On Tue, Jun 25, 2019 at 7:10 AM Greg Ungerer <gerg at kernel.org> wrote:
>>>>> On 23/6/19 3:58 pm, Sergio Paracuellos wrote:
>>>>>> On Sun, Jun 23, 2019 at 4:15 AM Brett Neumeier <bneumeier at gmail.com> wrote:
>>>>>>> On Fri, Jun 21, 2019 at 7:35 AM Greg Ungerer <gerg at kernel.org> wrote:
>>>>>>>> On 21/6/19 4:15 pm, Sergio Paracuellos wrote:
>>>>>>>>> This patch series properly handle minor issues in this driver. These are:
>>>>>>>>> * Disable pcie port clock on pci dirver instead of doing it in the phy
>>>>>>>>>       driver. The pci driver is the correct place to do this.
>>>>>>>>> * Add a missing call to phy_exit function to properly handle the function
>>>>>>>>>       'mt7621_pcie_init_port' error path.
>>>>>>>>> * Move driver to init in a later stage using 'module_init' instead of using
>>>>>>>>>       'arch_initcall'.
>>>>>>>>>
>>>>>>>>> Patches are only compile-tested. It would be awasome to be tested before applied
>>>>>>>>> them (mainly the change to 'module_init' stuff).
>>>>>>>
>>>>>>> I have similar results to Greg -- on GnuBee PC1 and PC2, six boot
>>>>>>> attempts each on a kernel built from staging-next, I have four hangs
>>>>>>> and eight successful boots. The hanging patterns are similar to
>>>>>>> previous results. If the full boot logs would be helpful let me know,
>>>>>>> I can provide them.
>>>>>>
>>>>>> Thanks for letting me know. One thing we can try is check init order
>>>>>> in v4.20 kernel. Can you please try to compile pci driver for the
>>>>>> kernel v4.20 tag changing
>>>>>> driver's last line 'arch_initcall' into 'module_init'? Just to know if
>>>>>> at that working driver putting all the stuff in a later stage stills
>>>>>> work as expected.
>>>>>>
>>>>>> Full dmesg's of this v4.20 wih the change would be helpful.
>>>>>
>>>>> Not exactly what you asked for, but just as useful I think.
>>>>> I have a linux-5.1.14 kernel with the linux-4.20 pci-mt7621.c
>>>>> driver in place. That works great, never hangs, always probes
>>>>> PCI and works.
>>>>>
>>>>> If I change the pci-mt7621.c arch_initcall() to module_init(),
>>>>> then I see the PCI probe happen much latter in boot. Running this
>>>>> I have booted about 15 times, no hangs, PCI bus probed and working
>>>>> on every boot.
>>>>
>>>> Perfect. That is exactly what I wanted to know. Thanks for testing this.
>>>>
>>>>>
>>>>> Boot log below.
>>>>>
>>>>> Regards
>>>>> Greg
>>>
>>> Can you please test the following change?
>>>
>>> diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c
>>> b/drivers/staging/mt7621-pci/pci-mt7621.c
>>> index a981f4f0ed03..9ae14f722c91 100644
>>> --- a/drivers/staging/mt7621-pci/pci-mt7621.c
>>> +++ b/drivers/staging/mt7621-pci/pci-mt7621.c
>>> @@ -41,8 +41,8 @@
>>>
>>>    /* MediaTek specific configuration registers */
>>>    #define PCIE_FTS_NUM                   0x70c
>>> -#define PCIE_FTS_NUM_MASK              GENMASK(15, 8)
>>> -#define PCIE_FTS_NUM_L0(x)             ((x) & 0xff << 8)
>>> +#define PCIE_FTS_NUM_MASK              GENMASK(7, 0)
>>> +#define PCIE_FTS_NUM_L0(x)             ((x) << 8)
>>>
>>>    /* rt_sysc_membase relative registers */
>>>    #define RALINK_CLKCFG1                 0x30
>>> @@ -540,7 +540,7 @@ static void mt7621_pcie_enable_ports(struct
>>> mt7621_pcie *pcie)
>>>                   write_config(pcie, slot, PCI_COMMAND, val);
>>>                   /* configure RC FTS number to 250 when it leaves L0s */
>>>                   val = read_config(pcie, slot, PCIE_FTS_NUM);
>>> -               val &= ~PCIE_FTS_NUM_MASK;
>>> +               val &= ~(PCIE_FTS_NUM_MASK) << 8;
>>>                   val |= PCIE_FTS_NUM_L0(0x50);
>>>                   write_config(pcie, slot, PCIE_FTS_NUM, val);
>>>           }
>>
>> Same result. Occasional hangs on boot, sometimes it boots all the way up
>> successfully.
> 
> No lucky for us again :(
> 
>> But looking at the patch doesn't it do essentiall
>> the same thing?
> 
> Well, it looks like the same thing but I wrote this two in the way the
> are in the original code, But it is not exactly the
> same because the following:
> 
> #define PCIE_FTS_NUM_L0(x)             ((x) & 0xff << 8)
> 
> should be
> 
> #define PCIE_FTS_NUM_L0(x)             (((x) & 0xff) << 8)

Ahh, yes, sorry I missed that missing set of brackets.
You are right.

BTW, I applied that on top of your other recent fixes (that ones
you pushed to  gregkh for staging). So I tested with the
updated GPIO reset code.

Regards
Greg



> A parenthesis is missing there to be exactly the same. I rewrote bad
> those two. But it seems it doesn't matter...
> 
> Original code in v4.20:
> 
> val &= ~(0xff) << 8;
> val |= 0x50 << 8;
> write_config(pcie, 0, 0x70c, val);
> 
> Now:
> 
> #define PCIE_FTS_NUM                 0x70c
> #define PCIE_FTS_NUM_MASK      GENMASK(15, 8)
> #define PCIE_FTS_NUM_L0(x)         ((x) & 0xff << 8)
> 
> val = read_config(pcie, slot, PCIE_FTS_NUM);
> val &= ~PCIE_FTS_NUM_MASK;
> val |= PCIE_FTS_NUM_L0(0x50);
> write_config(pcie, slot, PCIE_FTS_NUM, val);
> 
> Without the parenthesis the 0x50 is getting into 0's right? instead of
> just moving itself 8 bits left.
> 
>>
>> Regards
>> Greg
>>
> 
> Best regards,
>      Sergio Paracuellos
> 
>>
>>
>>> Best regards,
>>>       Sergio Paracuellos
>>>
>>>>>
>>>>> Linux version 5.1.14 (gerg at goober) (gcc version 5.4.0 (GCC)) #2 SMP Tue Jun 25 14:34:27 AEST 2019
>>>>> SoC Type: MediaTek MT7621 ver:1 eco:3
>>>>> printk: bootconsole [early0] enabled
>>>>> CPU0 revision is: 0001992f (MIPS 1004Kc)
>>>>> OF: fdt: No chosen node found, continuing without
>>>>> MIPS: machine is Digi EX15
>>>>> Determined physical RAM map:
>>>>>     memory: 10000000 @ 00000000 (usable)
>>>>> Initrd not found or empty - disabling initrd
>>>>> VPE topology {2,2} total 4
>>>>> Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
>>>>> Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
>>>>> MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
>>>>> Zone ranges:
>>>>>      Normal   [mem 0x0000000000000000-0x000000000fffffff]
>>>>> Movable zone start for each node
>>>>> Early memory node ranges
>>>>>      node   0: [mem 0x0000000000000000-0x000000000fffffff]
>>>>> Initmem setup node 0 [mem 0x0000000000000000-0x000000000fffffff]
>>>>> random: get_random_bytes called from start_kernel+0xb0/0x51c with crng_init=0
>>>>> percpu: Embedded 15 pages/cpu s30144 r8192 d23104 u61440
>>>>> Built 1 zonelists, mobility grouping on.  Total pages: 65024
>>>>> Kernel command line:  console=ttyS0,115200 ubi.mtd=3 root=/dev/mtdblock5 bootpart=a
>>>>> Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
>>>>> Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
>>>>> Writing ErrCtl register=00030517
>>>>> Readback ErrCtl register=00030517
>>>>> Memory: 251176K/262144K available (6464K kernel code, 243K rwdata, 1200K rodata, 272K init, 228K bss, 10968K reserved, 0K cma-reserved)
>>>>> SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
>>>>> rcu: Hierarchical RCU implementation.
>>>>> rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
>>>>> NR_IRQS: 256
>>>>> clocksource: GIC: mask: 0xffffffffffffffff max_cycles: 0xcaf478abb4, max_idle_ns: 440795247997 ns
>>>>> sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
>>>>> Calibrating delay loop... 586.13 BogoMIPS (lpj=2930688)
>>>>> pid_max: default: 32768 minimum: 301
>>>>> Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
>>>>> Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
>>>>> rcu: Hierarchical SRCU implementation.
>>>>> smp: Bringing up secondary CPUs ...
>>>>> Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
>>>>> Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
>>>>> MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
>>>>> CPU1 revision is: 0001992f (MIPS 1004Kc)
>>>>> Synchronize counters for CPU 1: done.
>>>>> Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
>>>>> Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
>>>>> MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
>>>>> CPU2 revision is: 0001992f (MIPS 1004Kc)
>>>>> Synchronize counters for CPU 2: done.
>>>>> Primary instruction cache 32kB, VIPT, 4-way, linesize 32 bytes.
>>>>> Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
>>>>> MIPS secondary cache 256kB, 8-way, linesize 32 bytes.
>>>>> CPU3 revision is: 0001992f (MIPS 1004Kc)
>>>>> Synchronize counters for CPU 3: done.
>>>>> smp: Brought up 1 node, 4 CPUs
>>>>> devtmpfs: initialized
>>>>> clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
>>>>> futex hash table entries: 1024 (order: 3, 32768 bytes)
>>>>> pinctrl core: initialized pinctrl subsystem
>>>>> 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
>>>>> pcf857x 0-0026: probed
>>>>> i2c-mt7621 1e000900.i2c: clock 400KHz, re-start not support
>>>>> clocksource: Switched to clocksource GIC
>>>>> NET: Registered protocol family 2
>>>>> tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes)
>>>>> TCP established hash table entries: 2048 (order: 1, 8192 bytes)
>>>>> TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
>>>>> TCP: Hash tables configured (established 2048 bind 2048)
>>>>> UDP hash table entries: 256 (order: 1, 8192 bytes)
>>>>> UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
>>>>> NET: Registered protocol family 1
>>>>> workingset: timestamp_bits=30 max_order=16 bucket_order=0
>>>>> squashfs: version 4.0 (2009/01/31) Phillip Lougher
>>>>> random: fast init done
>>>>> Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
>>>>> mt7621_gpio 1e000600.gpio: registering 32 gpios
>>>>> mt7621_gpio 1e000600.gpio: registering 32 gpios
>>>>> mt7621_gpio 1e000600.gpio: registering 32 gpios
>>>>> Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
>>>>> printk: console [ttyS0] disabled
>>>>> 1e000c00.uartlite: ttyS0 at MMIO 0x1e000c00 (irq = 18, base_baud = 3125000) is a 16550A
>>>>> printk: console [ttyS0] enabled
>>>>> printk: console [ttyS0] enabled
>>>>> printk: bootconsole [early0] disabled
>>>>> printk: bootconsole [early0] disabled
>>>>> 1e000d00.uartlite: ttyS1 at MMIO 0x1e000d00 (irq = 19, base_baud = 3125000) is a 16550A
>>>>> cacheinfo: Failed to find cpu0 device node
>>>>> cacheinfo: Unable to detect cache hierarchy for CPU 0
>>>>> brd: module loaded
>>>>> mt7621-nand: NAND register bank at 0xbe003000
>>>>> mt7621-nand: NAND ECC register bank at 0xbe003800
>>>>> nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xdc
>>>>> nand: Micron NAND 512MiB 3,3V 8-bit
>>>>> nand: 512 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
>>>>> nand: ecc bit: 4, spare_per_sector: 16
>>>>> Bad block table found at page 262080, version 0x01
>>>>> Bad block table found at page 262016, version 0x01
>>>>> 5 fixed-partitions partitions found on MTD device MT7621-NAND
>>>>> Creating 5 MTD partitions on "MT7621-NAND":
>>>>> 0x000000000000-0x000000200000 : "u-boot"
>>>>> 0x000000200000-0x000000300000 : "u-boot-env"
>>>>> 0x000000300000-0x000000500000 : "log"
>>>>> 0x000000500000-0x000020000000 : "flash"
>>>>> 0x000000000000-0x000020000000 : "all"
>>>>> libphy: Fixed MDIO Bus: probed
>>>>> tun: Universal TUN/TAP device driver, 1.6
>>>>> libphy: mdio: probed
>>>>> mtk_soc_eth 1e100000.ethernet: generated random MAC address c6:f5:21:ba:39:d3
>>>>> mtk_soc_eth 1e100000.ethernet: connected mac 0 to PHY at fixed-0:00 [uid=00000000, driver=Generic PHY]
>>>>> mtk_soc_eth 1e100000.ethernet eth0: mediatek frame engine at 0xbe100000, irq 21
>>>>> PPP generic driver version 2.4.2
>>>>> PPP BSD Compression module registered
>>>>> PPP Deflate Compression module registered
>>>>> PPP MPPE Compression module registered
>>>>> NET: Registered protocol family 24
>>>>> SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256).
>>>>> CSLIP: code copyright 1989 Regents of the University of California.
>>>>> usbcore: registered new interface driver asix
>>>>> usbcore: registered new interface driver ax88179_178a
>>>>> usbcore: registered new interface driver cdc_ether
>>>>> usbcore: registered new interface driver cdc_eem
>>>>> usbcore: registered new interface driver rndis_host
>>>>> usbcore: registered new interface driver cdc_subset
>>>>> usbcore: registered new interface driver cdc_ncm
>>>>> usbcore: registered new interface driver qmi_wwan
>>>>> usbcore: registered new interface driver cdc_mbim
>>>>> ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>>>>> ehci-pci: EHCI PCI platform driver
>>>>> ehci-platform: EHCI generic platform driver
>>>>> ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
>>>>> ohci-pci: OHCI PCI platform driver
>>>>> xhci-mtk 1e1c0000.xhci: xHCI Host Controller
>>>>> xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 1
>>>>> xhci-mtk 1e1c0000.xhci: hcc params 0x01401198 hci version 0x96 quirks 0x0000000000210010
>>>>> xhci-mtk 1e1c0000.xhci: irq 20, io mem 0x1e1c0000
>>>>> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.01
>>>>> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>>>>> usb usb1: Product: xHCI Host Controller
>>>>> usb usb1: Manufacturer: Linux 5.1.14-ac0 xhci-hcd
>>>>> usb usb1: SerialNumber: 1e1c0000.xhci
>>>>> hub 1-0:1.0: USB hub found
>>>>> hub 1-0:1.0: 2 ports detected
>>>>> xhci-mtk 1e1c0000.xhci: xHCI Host Controller
>>>>> xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 2
>>>>> xhci-mtk 1e1c0000.xhci: Host supports USB 3.0  SuperSpeed
>>>>> usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
>>>>> usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.01
>>>>> usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>>>>> usb usb2: Product: xHCI Host Controller
>>>>> usb usb2: Manufacturer: Linux 5.1.14-ac0 xhci-hcd
>>>>> usb usb2: SerialNumber: 1e1c0000.xhci
>>>>> hub 2-0:1.0: USB hub found
>>>>> hub 2-0:1.0: 1 port detected
>>>>> usbcore: registered new interface driver cdc_acm
>>>>> cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
>>>>> usbcore: registered new interface driver cdc_wdm
>>>>> usbcore: registered new interface driver usb-storage
>>>>> usbcore: registered new interface driver usbserial_generic
>>>>> usbserial: USB Serial support registered for generic
>>>>> usbcore: registered new interface driver ipw
>>>>> usbserial: USB Serial support registered for IPWireless converter
>>>>> usbcore: registered new interface driver option
>>>>> usbserial: USB Serial support registered for GSM modem (1-port)
>>>>> usbcore: registered new interface driver qcaux
>>>>> usbserial: USB Serial support registered for qcaux
>>>>> usbcore: registered new interface driver qcserial
>>>>> usbserial: USB Serial support registered for Qualcomm USB modem
>>>>> usbcore: registered new interface driver quatech2
>>>>> usbserial: USB Serial support registered for Quatech 2nd gen USB to Serial Driver
>>>>> usbcore: registered new interface driver usb_serial_simple
>>>>> usbserial: USB Serial support registered for carelink
>>>>> usbserial: USB Serial support registered for zio
>>>>> usbserial: USB Serial support registered for funsoft
>>>>> usbserial: USB Serial support registered for flashloader
>>>>> usbserial: USB Serial support registered for google
>>>>> usbserial: USB Serial support registered for libtransistor
>>>>> usbserial: USB Serial support registered for vivopay
>>>>> usbserial: USB Serial support registered for moto_modem
>>>>> usbserial: USB Serial support registered for motorola_tetra
>>>>> usbserial: USB Serial support registered for novatel_gps
>>>>> usbserial: USB Serial support registered for hp4x
>>>>> usbserial: USB Serial support registered for suunto
>>>>> usbserial: USB Serial support registered for siemens_mpi
>>>>> ***** Xtal 40MHz *****
>>>>> PCIE1 no card, disable it(RST&CLK)
>>>>> PCIE2 no card, disable it(RST&CLK)
>>>>> PCIE0 enabled
>>>>> PCI coherence region base: 0x60000000, mask/settings: 0xf0000002
>>>>> mt7621-pci 1e140000.pcie: PCI host bridge to bus 0000:00
>>>>> pci_bus 0000:00: root bus resource [io  0xffffffff]
>>>>> pci_bus 0000:00: root bus resource [mem 0x60000000-0x6fffffff]
>>>>> pci_bus 0000:00: root bus resource [bus 00-ff]
>>>>> pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
>>>>> pci 0000:00:00.0: PCI bridge to [bus 01-ff]
>>>>> pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
>>>>> pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
>>>>> pci 0000:00:00.0: BAR 8: assigned [mem 0x60000000-0x601fffff]
>>>>> pci 0000:00:00.0: BAR 9: assigned [mem 0x60200000-0x602fffff pref]
>>>>> pci 0000:00:00.0: BAR 1: assigned [mem 0x60300000-0x6030ffff]
>>>>> pci 0000:00:00.0: BAR 7: no space for [io  size 0x1000]
>>>>> pci 0000:00:00.0: BAR 7: failed to assign [io  size 0x1000]
>>>>> pci 0000:01:00.0: BAR 0: assigned [mem 0x60000000-0x601fffff 64bit]
>>>>> pci 0000:01:00.0: BAR 6: assigned [mem 0x60200000-0x6020ffff pref]
>>>>> pci 0000:00:00.0: PCI bridge to [bus 01]
>>>>> pci 0000:00:00.0:   bridge window [mem 0x60000000-0x601fffff]
>>>>> pci 0000:00:00.0:   bridge window [mem 0x60200000-0x602fffff pref]
>>>>> pcieport 0000:00:00.0: of_irq_parse_pci: failed with rc=-22
>>>>> pcieport 0000:00:00.0: enabling device (0004 -> 0006)
>>>>> u32 classifier
>>>>>        input device check on
>>>>> ipip: IPv4 and MPLS over IPv4 tunneling driver
>>>>> gre: GRE over IPv4 demultiplexor driver
>>>>> ip_gre: GRE over IPv4 tunneling driver
>>>>> Initializing XFRM netlink socket
>>>>> NET: Registered protocol family 10
>>>>> Segment Routing with IPv6
>>>>> sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
>>>>> NET: Registered protocol family 17
>>>>> NET: Registered protocol family 15
>>>>> 8021q: 802.1Q VLAN Support v1.8
>>>>> libphy: dsa slave smi: probed
>>>>> mt7530 mdio-bus:00 lan (uninitialized): PHY [dsa-0.0:00] driver [Generic PHY]
>>>>> mt7530 mdio-bus:00 wan (uninitialized): PHY [dsa-0.0:01] driver [Generic PHY]
>>>>> DSA: tree 0 setup
>>>>> ubi0: attaching mtd3
>>>>> ubi0: scanning is finished
>>>>> ubi0: attached mtd3 (name "flash", size 507 MiB)
>>>>> ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
>>>>> ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
>>>>> ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
>>>>> ubi0: good PEBs: 4052, bad PEBs: 4, corrupted PEBs: 0
>>>>> ubi0: user volume: 4, internal volumes: 1, max. volumes count: 128
>>>>> ubi0: max/mean erase counter: 9/4, WL threshold: 4096, image sequence number: 1236486005
>>>>> ubi0: available PEBs: 0, total reserved PEBs: 4052, PEBs reserved for bad PEB handling: 76
>>>>> ubi0: background thread "ubi_bgt0d" started, PID 112
>>>>> hctosys: unable to open rtc device (rtc0)
>>>>> VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
>>>>> devtmpfs: mounted
>>>>> Freeing unused kernel memory: 272K
>>>>> This architecture does not have kernel memory protection.
>>>>> Run /sbin/init as init process
>>>>> Run /etc/init as init process
>>>>> Run /bin/init as init process
>>>>>
>>>>>
>>>
> 


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