萌新一枚，希望在本网中学习到更多的大佬的技能～～感谢云哥以及发帖的各位～～
Licheepi Nano 带FLASH的：屏幕是自己买的5寸屏，
使用的是https://whycan.cn/t_3010.html这个网址的SPI FLASH 地址的配置，
但是将最后一项去掉了，包括注释掉在设备树内相关部分：
mtd4 overlay 0x960000 0x500000 (5MB)
其中，Uboot 的设置是按着这里面设置的，但是没用使用这里面的机制【使用SquashFS + OverlayFS】说的这种机制，
使用的是http://nano.lichee.pro/build_sys/build_flash.html这里面的参数：
bootargs修改：将rootfstype= SquashFS 改成 rootfstype=jffs2
其中其他的设置可以参考https://whycan.cn/t_2179.html
包括设置输出日志linux的编译参考的也是官方给出的配置。
buildroot的使用和编译使用的是官方的出现错误，错误形式是：
https://whycan.cn/t_1180.html
此链接的22#
我遇到的是：
https://whycan.cn/t_1017.html
此链接的#3类似的情况，其中是编译uboot和kenel好好的，但是，编译根文件系统遇到问题了
其中下载的是此链接：
https://whycan.cn/t_2002.html
的15楼的晕哥给出的Nano_flash_800480分别解压后，使用的是他的根文件系统
需要详细的分清楚bootargs 和bootcmd的里面的区别。以及SPI FLASH里面设备树设置的分区的位置。
接下来分析一波整体启动流程涉及需要的必备的～～
https://whycan.cn/t_1017.html
上述链接涉及的是内核的重载和卸载～～～
启动情况是下面的这种：
U-Boot SPL 2018.01-05679-g013ca457fd-dirty (Oct 13 2019 - 12:03:22)
DRAM: 32 MiB
Trying to boot from MMC1
Card did not respond to voltage select!
mmc_init: -95, time 22
spl: mmc init failed with error: -95
Trying to boot from sunxi SPI
U-Boot 2018.01-05679-g013ca457fd-dirty (Oct 13 2019 - 12:03:22 +0800) Allwinnery
CPU: Allwinner F Series (SUNIV)
Model: Lichee Pi Nano
DRAM: 32 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
Setting up a 800x480 lcd console (overscan 0x0)
In: serial@1c25000
Out: serial@1c25000
Err: serial@1c25000
Net: No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
device 0 offset 0x60000, size 0x4000
SF: 16384 bytes @ 0x60000 Read: OK
device 0 offset 0x64000, size 0x400000
SF: 4194304 bytes @ 0x64000 Read: OK
## Flattened Device Tree blob at 80c00000
Booting using the fdt blob at 0x80c00000
Loading Device Tree to 80e61000, end 80e65ebb ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.0-licheepi-nano+ (ls@LS-Y) (gcc version 7.2.19
[ 0.000000] CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=0005317f
[ 0.000000] CPU: VIVT data cache, VIVT instruction cache
[ 0.000000] OF: fdt: Machine model: Lichee Pi Nano
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] random: fast init done
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 8128
[ 0.000000] Kernel command line: console=ttyS0,115200 panic=5 rootwait root=2
[ 0.000000] PID hash table entries: 128 (order: -3, 512 bytes)
[ 0.000000] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Memory: 22672K/32768K available (6144K kernel code, 212K rwdata,)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xc2800000 - 0xff800000 ( 976 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xc2000000 ( 32 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0700000 (7136 kB)
[ 0.000000] .init : 0xc0900000 - 0xc0a00000 (1024 kB)
[ 0.000000] .data : 0xc0a00000 - 0xc0a35100 ( 213 kB)
[ 0.000000] .bss : 0xc0a3a50c - 0xc0a7929c ( 252 kB)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000049] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 8947s
[ 0.000118] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, maxs
[ 0.000734] Console: colour dummy device 80x30
[ 0.000832] Calibrating delay loop... 203.16 BogoMIPS (lpj=1015808)
[ 0.070245] pid_max: default: 32768 minimum: 301
[ 0.070610] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.070660] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.072221] CPU: Testing write buffer coherency: ok
[ 0.074138] Setting up static identity map for 0x80100000 - 0x80100058
[ 0.076649] devtmpfs: initialized
[ 0.083501] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, ms
[ 0.083571] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.083854] pinctrl core: initialized pinctrl subsystem
[ 0.086160] NET: Registered protocol family 16
[ 0.088129] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.090023] cpuidle: using governor menu
[ 0.115960] SCSI subsystem initialized
[ 0.116327] usbcore: registered new interface driver usbfs
[ 0.116469] usbcore: registered new interface driver hub
[ 0.116692] usbcore: registered new device driver usb
[ 0.117198] pps_core: LinuxPPS API ver. 1 registered
[ 0.117224] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giom>
[ 0.117298] PTP clock support registered
[ 0.117803] Advanced Linux Sound Architecture Driver Initialized.
[ 0.120963] clocksource: Switched to clocksource timer
[ 0.149602] NET: Registered protocol family 2
[ 0.151240] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.151320] TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.151372] TCP: Hash tables configured (established 1024 bind 1024)
[ 0.151730] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.151804] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.152288] NET: Registered protocol family 1
[ 0.153400] RPC: Registered named UNIX socket transport module.
[ 0.153444] RPC: Registered udp transport module.
[ 0.153459] RPC: Registered tcp transport module.
[ 0.153476] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.154018] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.155944] Initialise system trusted keyrings
[ 0.156600] workingset: timestamp_bits=30 max_order=13 bucket_order=0
[ 0.172486] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.174929] NFS: Registering the id_resolver key type
[ 0.175029] Key type id_resolver registered
[ 0.175049] Key type id_legacy registered
[ 0.175174] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[ 0.189781] Key type asymmetric registered
[ 0.189824] Asymmetric key parser 'x509' registered
[ 0.190044] Block layer SCSI generic (bsg) driver version 0.4 loaded (major )
[ 0.190077] io scheduler noop registered
[ 0.190095] io scheduler deadline registered
[ 0.190896] io scheduler cfq registered (default)
[ 0.190928] io scheduler mq-deadline registered
[ 0.191086] io scheduler kyber registered
[ 0.192222] sun4i-usb-phy 1c13400.phy: Couldn't request ID GPIO
[ 0.202675] suniv-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[ 0.386958] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[ 0.394438] console [ttyS0] disabled
[ 0.414697] 1c25000.serial: ttyS0 at MMIO 0x1c25000 (irq = 22, base_baud = 6A
[ 0.898902] console [ttyS0] enabled
[ 0.908266] SCSI Media Changer driver v0.25
[ 0.916328] m25p80 spi0.0: w25q128 (16384 Kbytes)
[ 0.921269] 4 ofpart partitions found on MTD device spi0.0
[ 0.926757] Creating 4 MTD partitions on "spi0.0":
[ 0.931627] 0x000000000000-0x000000058000 : "u-boot"
[ 0.939439] 0x000000060000-0x000000064000 : "dtb"
[ 0.946935] 0x000000064000-0x000000464000 : "kernel"
[ 0.954738] 0x000000464000-0x000000960000 : "rootfs"
[ 0.962892] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.969431] ehci-platform: EHCI generic platform driver
[ 0.975060] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.981378] ohci-platform: OHCI generic platform driver
[ 0.987000] usbcore: registered new interface driver usb-storage
[ 0.994070] udc-core: couldn't find an available UDC - added [g_cdc] to lists
[ 1.003145] i2c /dev entries driver
[ 1.061100] sunxi-mmc 1c0f000.mmc: base:0xc28a6000 irq:18
[ 1.068667] usbcore: registered new interface driver usbhid
[ 1.074371] usbhid: USB HID core driver
[ 1.096997] NET: Registered protocol family 17
[ 1.101872] Key type dns_resolver registered
[ 1.108543] Loading compiled-in X.509 certificates
[ 1.124710] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto sr
[ 1.136568] ------------[ cut here ]------------
[ 1.141412] WARNING: CPU: 0 PID: 3 at drivers/usb/musb/sunxi.c:411 sunxi_mus4
[ 1.150265] sunxi_musb_ep_offset called with non 0 offset
[ 1.155728] Modules linked in:
[ 1.158807] CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.14.0-licheepi-nano5
[ 1.166224] Hardware name: Allwinner suniv Family
[ 1.170948] Workqueue: events deferred_probe_work_func
[ 1.176213] [<c010e50c>] (unwind_backtrace) from [<c010b68c>] (show_stack+0x)
[ 1.184046] [<c010b68c>] (show_stack) from [<c011666c>] (__warn+0xd4/0xfc)
[ 1.190924] [<c011666c>] (__warn) from [<c01166cc>] (warn_slowpath_fmt+0x38/)
[ 1.198479] [<c01166cc>] (warn_slowpath_fmt) from [<c0476cb8>] (sunxi_musb_e)
[ 1.207266] [<c0476cb8>] (sunxi_musb_ep_offset) from [<c046a7c4>] (ep_config)
[ 1.216113] [<c046a7c4>] (ep_config_from_hw) from [<c046c438>] (musb_probe+0)
[ 1.224173] [<c046c438>] (musb_probe) from [<c03f27e0>] (platform_drv_probe+)
[ 1.232147] [<c03f27e0>] (platform_drv_probe) from [<c03f0ff8>] (driver_prob)
[ 1.241087] [<c03f0ff8>] (driver_probe_device) from [<c03ef618>] (bus_for_ea)
[ 1.249619] [<c03ef618>] (bus_for_each_drv) from [<c03f0ce0>] (__device_atta)
[ 1.257929] [<c03f0ce0>] (__device_attach) from [<c03f02ec>] (bus_probe_devi)
[ 1.266157] [<c03f02ec>] (bus_probe_device) from [<c03ee774>] (device_add+0x)
[ 1.274129] [<c03ee774>] (device_add) from [<c03f25f8>] (platform_device_add)
[ 1.282357] [<c03f25f8>] (platform_device_add) from [<c03f2fc8>] (platform_d)
[ 1.292150] [<c03f2fc8>] (platform_device_register_full) from [<c0476914>] ()
[ 1.301759] [<c0476914>] (sunxi_musb_probe) from [<c03f27e0>] (platform_drv_)
[ 1.310199] [<c03f27e0>] (platform_drv_probe) from [<c03f0ff8>] (driver_prob)
[ 1.319131] [<c03f0ff8>] (driver_probe_device) from [<c03ef618>] (bus_for_ea)
[ 1.327711] [<c03ef618>] (bus_for_each_drv) from [<c03f0ce0>] (__device_atta)
[ 1.336016] [<c03f0ce0>] (__device_attach) from [<c03f02ec>] (bus_probe_devi)
[ 1.344228] [<c03f02ec>] (bus_probe_device) from [<c03f0728>] (deferred_prob)
[ 1.353320] [<c03f0728>] (deferred_probe_work_func) from [<c0129a7c>] (proce)
[ 1.362509] [<c0129a7c>] (process_one_work) from [<c0129f2c>] (worker_thread)
[ 1.370699] [<c0129f2c>] (worker_thread) from [<c012efc8>] (kthread+0x120/0x)
[ 1.378155] [<c012efc8>] (kthread) from [<c0107da8>] (ret_from_fork+0x14/0x2)
[ 1.385409] ---[ end trace 45bc7dd67f8ebf46 ]---
[ 1.390041] musb-sunxi 1c13000.usb: Error unknown readb offset 128
[ 1.396374] musb-hdrc musb-hdrc.1.auto: musb_init_controller failed with sta2
[ 1.404209] musb-hdrc: probe of musb-hdrc.1.auto failed with error -22
[ 1.411724] ALSA device list:
[ 1.414772] #0: Loopback 1
[ 1.419014] jffs2: Flash size not aligned to erasesize, reducing to 5056KiB
[ 1.523196] random: crng init done
[ 2.579590] VFS: Mounted root (jffs2 filesystem) on device 31:3.
[ 2.587601] devtmpfs: mounted
[ 2.595080] Freeing unused kernel memory: 1024K
Starting logging: OK
Jan 1 00:00:09 Lichee syslog.info syslogd started: BusyBox v1.27.1
Jan 1 00:00:09 Lichee user.notice kernel: klogd started: BusyBox v1.27.1 (2018)
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Booting Linux on physic0
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] Linux version 4.14.0-9
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] CPU: ARM926EJ-S [410692f
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] CPU: VIVT data cache, Ve
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] OF: fdt: Machine model:o
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Memory policy: Data cack
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] On node 0 totalpages: 2
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] free_area_init_node: n0
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] Normal zone: 64 pagep
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] Normal zone: 0 pagesd
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] Normal zone: 8192 pa0
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] random: fast init done
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] pcpu-alloc: s0 r0 d3278
Jan 1 00:00:09 Lichee user.debug kernel: [ 0.000000] pcpu-alloc: [0] 0
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Built 1 zonelists, mobi8
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] Kernel command line: 2
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] PID hash table entries:)
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Dentry cache hash table)
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Inode-cache hash table )
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] Memory: 22672K/32768K a)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] Virtual kernel memory:
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] vector : 0xffff0)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] fixmap : 0xffc00)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] vmalloc : 0xc2800)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] lowmem : 0xc0000)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] pkmap : 0xbfe00)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] modules : 0xbf000)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] .text : 0xc0008)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] .init : 0xc0900)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] .data : 0xc0a00)
Jan 1 00:00:09 Lichee user.notice kernel: [ 0.000000] .bss : 0xc0a3a)
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] SLUB: HWalign=32, Order1
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000000] NR_IRQS: 16, nr_irqs: 16
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000049] sched_clock: 32 bits ats
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000118] clocksource: timer: mass
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000734] Console: colour dummy d0
Jan 1 00:00:09 Lichee user.info kernel: [ 0.000832] Calibrating delay loop.)
Jan 1 00:00:09 Lichee user.info kernel: [ 0.070245] pid_max: default: 327681
Jan 1 00:00:09 Lichee user.info kernel: [ 0.070610] Mount-cache hash table )
Jan 1 00:00:09 Lichee user.info kernel: [ 0.070660] Mountpoint-cache hash t!
Jan 1 00:00:12 Lichee user.warn kernel: [ 12.049922] jffs2: warning: (53) jf!
read-only file system detected...done
Jan 1 00:00:14 Lichee daemon.info : starting pid 70, tty '/dev/ttyS0': '/sbin/'
Welcome to Lichee Pi
Lichee login: licheepi
Password:
Login incorrect
Lichee login: root
Password:
Jan 1 00:00:41 Lichee auth.info login[70]: root login on 'ttyS0'
# cd /
# ls
bin lib media proc sbin usr
dev lib32 mnt root sys var
etc linuxrc opt run tmp
#
其中，启动的LOG显示的情况不知道这样启动是否正确，感觉能够启动起来已经是很好了,鼓励一下自己。
其中，涉及相关的具体内核模块使用以及查看上述是不理解的地方，这是接下来要进行的工作了。
如果大佬能够看到这个启动的LOG 能否提出一些批评和意见～～感谢～～～
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