嵌入式Linux--MYS-6ULX-IOT板子上电分析

约定不等于承诺〃 2023-01-03 11:24 191阅读 0赞

### 目录 ###

*  基本信息
 *  U-Boot命令
 *   *  nand info命令
     *  nand device命令
 *  上电信息
 *  从打印信息中获得NAND分布信息
 *  所有的打印信息

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODc3MTI1_size_16_color_FFFFFF_t_70_pic_center]

# 基本信息 #

*  ROM：NAND Flash - 256MiB
 *  RAM：DRAM - 256MiB
 *  396MHz ~ 528MHz
 *  单核A7

# U-Boot命令 #

## nand info命令 ##

=> nand info
    Device 0: nand0, sector size 128 KiB
      Page size       2048 b
      OOB size          64 b
      Erase size    131072 b
      subpagesize     2048 b
      options     0x40000200
      bbt options 0x    8000

## nand device命令 ##

=> nand device
    
    Device 0: nand0, sector size 128 KiB
      Page size       2048 b
      OOB size          64 b
      Erase size    131072 b
      subpagesize     2048 b
      options     0x40000200
      bbt options 0x    8000

# 上电信息 #

Normal Boot
    Hit any key to stop autoboot:  0
    
    NAND read: device 0 offset 0x500000, size 0xa00000
     10485760 bytes read: OK
    
    NAND read: device 0 offset 0xf00000, size 0x100000
     1048576 bytes read: OK
    Kernel image @ 0x80800000 [ 0x000000 - 0x685f98 ]
    ## Flattened Device Tree blob at 83000000
       Booting using the fdt blob at 0x83000000
       Using Device Tree in place at 83000000, end 8300ba0b
    
    Starting kernel ...

NAND read: device 0 offset 0x500000, size 0xa00000
     10485760 bytes read: OK

*  从NAND Flash上面从地址0~0x500000读取0xa00000（10485760Byte）个字节的数据

NAND read: device 0 offset 0xf00000, size 0x100000
     1048576 bytes read: OK

*  从NAND Flash上面从地址0~0xf00000读取0x100000（1048576Byte）个字节的数据

# 从打印信息中获得NAND分布信息 #

nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
    gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
    Bad block table found at page 131008, version 0x01
    Bad block table found at page 130944, version 0x01
    4 cmdlinepart partitions found on MTD device gpmi-nand
    Creating 4 MTD partitions on "gpmi-nand":
    0x000000000000-0x000000500000 : "boot"
    0x000000500000-0x000000f00000 : "kernel"
    0x000000f00000-0x000001000000 : "dtb"
    0x000001000000-0x000010000000 : "rootfs"

*  NAND Flash使用的颗粒是SLC技术：SLC = Single-Level Cell，即1 bit per cell，1个存储器储存单元可存放1 bit的数据，只存在0和1两个充电值。以此类推，TLC = Triple-Level Cell，即3 bit per cell，1个存储器储存单元可存放3 bit的数据。

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4ODc3MTI1_size_16_color_FFFFFF_t_70_pic_center 1]

# 所有的打印信息 #

U-Boot 2016.03-mys-6ulx+g4ade113 (Sep 13 2017 - 00:04:23 +0800)
    
    CPU:   Freescale i.MX6ULL rev1.1 528 MHz (running at 396 MHz)
    CPU:   Commercial temperature grade (0C to 95C) at 32C
    Reset cause: POR
    Board: MYS-MX6ULL 14x14
    I2C:   ready
    DRAM:  256 MiB
    NAND:  256 MiB
    MMC:   FSL_SDHC: 0, FSL_SDHC: 1
    *** Warning - bad CRC, using default environment
    
    Display: TFT43AB (480x272)
    Video: 480x272x24
    In:    serial
    Out:   serial
    Err:   serial
    Net:   FEC0
    Error: FEC0 address not set.
    
    Normal Boot
    Hit any key to stop autoboot:  0
    
    NAND read: device 0 offset 0x500000, size 0xa00000
     10485760 bytes read: OK
    
    NAND read: device 0 offset 0xf00000, size 0x100000
     1048576 bytes read: OK
    Kernel image @ 0x80800000 [ 0x000000 - 0x685f98 ]
    ## Flattened Device Tree blob at 83000000
       Booting using the fdt blob at 0x83000000
       Using Device Tree in place at 83000000, end 8300ba0b
    
    Starting kernel ...
    
    Booting Linux on physical CPU 0x0
    Linux version 4.1.15-1.2.0+g422cbfb (blackrose@brix4770-debian) (gcc version 5.3.0 (GCC) ) #1 SMP PREEMPT Wed Sep 13 14:15:29 CST 2017
    CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d
    CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
    Machine model: Freescale i.MX6 ULL 14x14 EVK Board
    Reserved memory: failed to allocate memory for node 'linux,cma'
    Memory policy: Data cache writealloc
    PERCPU: Embedded 12 pages/cpu @8fdd4000 s16908 r8192 d24052 u49152
    Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 65024
    Kernel command line: console=ttymxc0,115200 ubi.mtd=3 root=ubi0:rootfs rootfstype=ubifs mtdparts=gpmi-nand:5m(boot),10m(kernel),1m(dtb),-(rootfs)
    PID hash table entries: 1024 (order: 0, 4096 bytes)
    Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
    Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Memory: 246684K/262144K available (8626K kernel code, 440K rwdata, 3028K rodata, 432K init, 450K bss, 15460K reserved, 0K cma-reserved, 0K highmem)
    Virtual kernel memory layout:
        vector  : 0xffff0000 - 0xffff1000   (   4 kB)
        fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
        vmalloc : 0x90800000 - 0xff000000   (1768 MB)
        lowmem  : 0x80000000 - 0x90000000   ( 256 MB)
        pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
        modules : 0x7f000000 - 0x7fe00000   (  14 MB)
          .text : 0x80008000 - 0x80b69af0   (11655 kB)
          .init : 0x80b6a000 - 0x80bd6000   ( 432 kB)
          .data : 0x80bd6000 - 0x80c440a0   ( 441 kB)
           .bss : 0x80c47000 - 0x80cb7b40   ( 451 kB)
    SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
    Preemptible hierarchical RCU implementation.
            Additional per-CPU info printed with stalls.
            RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
    RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
    NR_IRQS:16 nr_irqs:16 16
    mxc_clocksource_init 24000000
    Switching to timer-based delay loop, resolution 41ns
    sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
    clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
    Console: colour dummy device 80x30
    Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
    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)
    CPU: Testing write buffer coherency: ok
    /cpus/cpu@0 missing clock-frequency property
    CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
    Setting up static identity map for 0x80008280 - 0x800082d8
    Brought up 1 CPUs
    SMP: Total of 1 processors activated (48.00 BogoMIPS).
    CPU: All CPU(s) started in SVC mode.
    devtmpfs: initialized
    device-tree: Duplicate name in lcdif@021c8000, renamed to "display#1"
    VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
    clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
    pinctrl core: initialized pinctrl subsystem
    NET: Registered protocol family 16
    DMA: preallocated 256 KiB pool for atomic coherent allocations
    cpuidle: using governor ladder
    cpuidle: using governor menu
    hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
    hw-breakpoint: maximum watchpoint size is 8 bytes.
    imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
    imx6ul-pinctrl 2290000.iomuxc-snvs: initialized IMX pinctrl driver
    mxs-dma 1804000.dma-apbh: initialized
    SCSI subsystem initialized
    usbcore: registered new interface driver usbfs
    usbcore: registered new interface driver hub
    usbcore: registered new device driver usb
    i2c i2c-1: IMX I2C adapter registered
    i2c i2c-1: can't use DMA media: Linux media interface: v0.10 Linux video capture interface: v2.00 pps_core: LinuxPPS API ver. 1 registered pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> PTP clock support registered MIPI CSI2 driver module loaded Advanced Linux Sound Architecture Driver Initialized. Bluetooth: Core ver 2.20 NET: Registered protocol family 31 Bluetooth: HCI device and connection manager initialized Bluetooth: HCI socket layer initialized Bluetooth: L2CAP socket layer initialized Bluetooth: SCO socket layer initialized Switched to clocksource mxc_timer1 NET: Registered protocol family 2 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 RPC: Registered named UNIX socket transport module. RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. imx rpmsg driver is registered. Bus freq driver module loaded futex hash table entries: 256 (order: 2, 16384 bytes) VFS: Disk quotas dquot_6.6.0 VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) NFS: Registering the id_resolver key type Key type id_resolver registered Key type id_legacy registered jffs2: version 2.2. (NAND) Â© 2001-2006 Red Hat, Inc. fuse init (API version 7.23) io scheduler noop registered io scheduler deadline registered io scheduler cfq registered (default) imx-weim 21b8000.weim: Driver registered. backlight supply power not found, using dummy regulator MIPI DSI driver module loaded MIPI DSI driver module loaded 21c8000.lcdif supply lcd not found, using dummy regulator mxsfb 21c8000.lcdif: failed to find mxc display driver Console: switching to colour frame buffer device 60x34 mxsfb 21c8000.lcdif: initialized imx-sdma 20ec000.sdma: no event needs to be remapped imx-sdma 20ec000.sdma: loaded firmware 3.3 imx-sdma 20ec000.sdma: initialized 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 19, base_baud = 5000000) is a IMX console [ttymxc0] enabled imx-rng 2284000.rngb: iMX RNG Registered. imx sema4 driver is registered. [drm] Initialized drm 1.1.0 20060810 [drm] Initialized vivante 1.0.0 20120216 on minor 0 brd: module loaded loop: module loaded nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda nand: Micron MT29F2G08ABAEAWP nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5 Bad block table found at page 131008, version 0x01 Bad block table found at page 130944, version 0x01 4 cmdlinepart partitions found on MTD device gpmi-nand Creating 4 MTD partitions on "gpmi-nand": 0x000000000000-0x000000500000 : "boot" 0x000000500000-0x000000f00000 : "kernel" 0x000000f00000-0x000001000000 : "dtb" 0x000001000000-0x000010000000 : "rootfs" gpmi-nand 1806000.gpmi-nand: driver registered. CAN device driver interface 2188000.ethernet supply phy not found, using dummy regulator pps pps0: new PPS source ptp0 fec 2188000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00 fec 2188000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: f2:9a:7d:ed:51:fe libphy: fec_enet_mii_bus: probed fec 2188000.ethernet eth0: registered PHC device 0 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) (6 bit encapsulation enabled). CSLIP: code copyright 1989 Regents of the University of California. SLIP linefill/keepalive option. ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
    ehci-mxc: Freescale On-Chip EHCI Host driver
    usbcore: registered new interface driver usb-storage
    usbcore: registered new interface driver usb_ehset_test
    2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
    2184200.usb supply vbus not found, using dummy regulator
    ci_hdrc ci_hdrc.1: EHCI Host Controller
    ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
    ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
    hub 1-0:1.0: USB hub found
    hub 1-0:1.0: 1 port detected
    mousedev: PS/2 mouse device common for all mice
    input: 20cc000.snvs:snvs-powerkey as /devices/platform/soc/2000000.aips-bus/20cc000.snvs/20cc000.snvs:snvs-powerkey/input/input0
    tp reset gpio=131
    msg ft5x0x_i2c_rxdata i2c read error: -5
    ft5x0x read ID error!
    ft5x06_ts: probe of 1-0038 failed with error 161
    ft5x0x_ts_init successful
    input: iMX6UL TouchScreen Controller as /devices/platform/soc/2000000.aips-bus/2040000.tsc/input/input1
    snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered 20cc000.snvs:snvs-r as rtc0
    i2c /dev entries driver
    IR NEC protocol handler initialized
    IR RC5(x/sz) protocol handler initialized
    IR RC6 protocol handler initialized
    IR JVC protocol handler initialized
    IR Sony protocol handler initialized
    IR SANYO protocol handler initialized
    IR Sharp protocol handler initialized
    IR MCE Keyboard/mouse protocol handler initialized
    IR XMP protocol handler initialized
    pxp-v4l2 pxp_v4l2: initialized
    usbcore: registered new interface driver uvcvideo
    USB Video Class driver (1.1.1)
    imx2-wdt 20bc000.wdog: use WDOG_B to reboot.
    imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0)
    Bluetooth: HCI UART driver ver 2.3
    Bluetooth: HCI UART protocol H4 registered
    Bluetooth: HCI UART protocol BCSP registered
    Bluetooth: HCI UART protocol ATH3K registered
    usbcore: registered new interface driver btusb
    usbcore: registered new interface driver ath3k
    sdhci: Secure Digital Host Controller Interface driver
    sdhci: Copyright(c) Pierre Ossman
    sdhci-pltfm: SDHCI platform and OF driver helper
    /soc/aips-bus@02100000/usdhc@02190000: voltage-ranges unspecified
    sdhci-esdhc-imx 2190000.usdhc: could not get ultra high speed state, work on normal mode
    sdhci-esdhc-imx 2190000.usdhc: Got CD GPIO
    sdhci-esdhc-imx 2190000.usdhc: No vmmc regulator found
    sdhci-esdhc-imx 2190000.usdhc: No vqmmc regulator found
    mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc] using ADMA
    usbcore: registered new interface driver usbhid
    usbhid: USB HID core driver
    usbcore: registered new interface driver snd-usb-audio
    fsl-asrc 2034000.asrc: driver registered
    NET: Registered protocol family 26
    NET: Registered protocol family 10
    sit: IPv6 over IPv4 tunneling driver
    NET: Registered protocol family 17
    can: controller area network core (rev 20120528 abi 9)
    usb 1-1: new high-speed USB device number 2 using ci_hdrc
    NET: Registered protocol family 29
    can: raw protocol (rev 20120528)
    can: broadcast manager protocol (rev 20120528 t)
    can: netlink gateway (rev 20130117) max_hops=1
    Bluetooth: RFCOMM TTY layer initialized
    Bluetooth: RFCOMM socket layer initialized
    Bluetooth: RFCOMM ver 1.11
    Bluetooth: BNEP (Ethernet Emulation) ver 1.3
    Bluetooth: BNEP filters: protocol multicast
    Bluetooth: BNEP socket layer initialized
    Bluetooth: HIDP (Human Interface Emulation) ver 1.2
    Bluetooth: HIDP socket layer initialized
    8021q: 802.1Q VLAN Support v1.8
    Key type dns_resolver registered
    cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)
    ubi0: attaching mtd3
    hub 1-1:1.0: USB hub found
    hub 1-1:1.0: 2 ports detected
    random: nonblocking pool is initialized
    usb 1-1.1: new high-speed USB device number 3 using ci_hdrc
    ubi0: scanning is finished
    ubi0: attached mtd3 (name "rootfs", size 240 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: 1916, bad PEBs: 4, corrupted PEBs: 0
    ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128
    ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 1137718726
    ubi0: available PEBs: 0, total reserved PEBs: 1916, PEBs reserved for bad PEB handling: 36
    ubi0: background thread "ubi_bgt0d" started, PID 81
    dhd_module_init in
    input: gpio-keys as /devices/platform/gpio-keys/input/input2
    snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 2017-09-15 03:41:37 UTC (1505446897)
    gpio_dvfs: disabling
    VSD_3V3: disabling
    can-3v3: disabling
    ALSA device list:
      No soundcards found.
    UBIFS (ubi0:0): recovery needed
    UBIFS (ubi0:0): recovery deferred
    UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "rootfs", R/O mode
    UBIFS (ubi0:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
    UBIFS (ubi0:0): FS size: 236683264 bytes (225 MiB, 1864 LEBs), journal size 11808768 bytes (11 MiB, 93 LEBs)
    UBIFS (ubi0:0): reserved for root: 4952683 bytes (4836 KiB)
    UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID CC0F3C5E-C9DB-4266-80FC-6F7CEF53CD0A, small LPT model
    VFS: Mounted root (ubifs filesystem) readonly on device 0:14.
    devtmpfs: mounted
    Freeing unused kernel memory: 432K (80b6a000 - 80bd6000)
    INIT: version 2.88 booting
    Starting udev
    udevd[117]: starting version 3.1.5
    UBIFS (ubi0:0): completing deferred recovery
    UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 141
    UBIFS (ubi0:0): deferred recovery completed
    bootlogd: cannot allocate pseudo tty: No such file or directory
    Chip Version Info: CHIP_8188E_Normal_Chip_TSMC_D_CUT_1T1R_RomVer(0)
    EEPROM ID = 0x8129
    usbcore: registered new interface driver r8188eu
    ALSA: Restoring mixer settings...
    INIT: Entering runlevel: 5
    /usr/sbin/alsactl: load_state:1735: No soundcards found...
    Configuring network interfaces... fec 2188000.ethernet eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=2188000.ethernet:00, irq=-1)
    IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    udhcpc (v1.24.1) started
    Sending discover...
    Sending discover...
    Sending discover...
    No lease, forking to background
    done.
    Starting system message bus: dbus.
    Starting OpenBSD Secure Shell server: sshd
    key_load_public: invalid format
    key_load_public: invalid format
    Could not load host key: /etc/ssh/ssh_host_ed25519_key
    done.
    Starting rpcbind daemon...done.
    Starting advanced power management daemon: No APM support in kernel
    (failed.)
    Starting syslogd/klogd: done
     * Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon
       ...done.
    Starting Telephony daemon
    Starting Linux NFC daemon
    Running local boot scripts (/etc/rc.local).
    xres = 480, yres = 272
    
    Freescale i.MX Release Distro 4.1.15-2.0.1 mys6ull14x14 /dev/ttymxc0
    
    mys6ull14x14 login: root
    root@mys6ull14x14:~# cd /
    root@mys6ull14x14:/# ls
    bin    boot   dev    etc    home   lib    media  mnt    proc   run    sbin   sys    tmp    usr    var
    root@mys6ull14x14:/#

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