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| Edited by rgy at 2016-8-5 17:42 
 Now , debug log via uart look  like this:
 
 CPU:   Allwinner H3 (SUN8I 1680)Model: Xunlong Orange Pi PC
 I2C:   ready
 DRAM:  1 GiB
 MMC:   SUNXI SD/MMC: 1, SUNXI SD/MMC: 0 (eMMC)
 *** Warning - bad CRC, using default environment
 
 In:    serial
 Out:   serial
 Err:   serial
 Net:   No ethernet found.
 starting USB...
 USB0:   USB EHCI 1.00
 USB1:   USB OHCI 1.0
 USB2:   USB EHCI 1.00
 USB3:   USB OHCI 1.0
 USB4:   USB EHCI 1.00
 USB5:   USB OHCI 1.0
 scanning bus 0 for devices... 1 USB Device(s) found
 scanning bus 2 for devices... 1 USB Device(s) found
 scanning bus 4 for devices... 1 USB Device(s) found
 Hit any key to stop autoboot:  0
 switch to partitions #0, OK
 mmc0(part 0) is current device
 Scanning mmc 0:1...
 Found U-Boot script /boot/boot.scr
 2444 bytes read in 172 ms (13.7 KiB/s)
 ## Executing script at 43100000
 gpio: pin PL10 (gpio 298) value is 1
 gpio: pin PG11 (gpio 203) value is 1
 ** File not found /boot/.verbose **
 ** File not found /boot/.next **
 ** Unrecognized filesystem type **
 ** File not found .next **
 37320 bytes read in 487 ms (74.2 KiB/s)
 3112435 bytes read in 3206 ms (947.3 KiB/s)
 5064616 bytes read in 5180 ms (954.1 KiB/s)
 Kernel image @ 0x48000000 [ 0x000000 - 0x4d47a8 ]
 ## Loading init Ramdisk from Legacy Image at 42000000 ...
 Image Name:   uInitrd
 Image Type:   ARM Linux RAMDisk Image (gzip compressed)
 Data Size:    3112371 Bytes = 3 MiB
 Load Address: 00000000
 Entry Point:  00000000
 Verifying Checksum ... OK
 Using machid 0x1029 from environment
 
 Starting kernel ...
 
 [sun8i_fixup]: From boot, get meminfo:
 Start:  0x40000000
 Size:   1024MB
 ion_carveout reserve: 160m@0 256m@0 130m@1 200m@1
 ion_reserve_select: ion chipid  [0x2004620!
 ion_reserve_common: ion reserve: [0x50000000, 0x60000000]!
 
 Debian GNU/Linux 8 orangepipcplus_mmci ttyS0
 
 orangepipcplus_mmci login:
 i need debug log like this
 Jun  1 19:46:00 localhost kernel: [    0.000000] Booting Linux on physical CPU 0Jun  1 19:46:00 localhost kernel: [    0.000000] Initializing cgroup subsys cpuset
 Jun  1 19:46:00 localhost kernel: [    0.000000] Initializing cgroup subsys cpu
 Jun  1 19:46:00 localhost kernel: [    0.000000] Linux version 3.4.112-sun8i (root@pluton) (gcc version 5.3.1 20160413 (Ubuntu/Linaro 5.3.1-14ubuntu2) ) #10 SMP PREEMPT Wed Jun 1 19:43:08 CEST 2016
 Jun  1 19:46:00 localhost kernel: [    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
 Jun  1 19:46:00 localhost kernel: [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
 Jun  1 19:46:00 localhost kernel: [    0.000000] Machine: sun8i
 Jun  1 19:46:00 localhost kernel: [    0.000000] cma: CMA: reserved 256 MiB at 50000000
 Jun  1 19:46:00 localhost kernel: [    0.000000] Memory policy: ECC disabled, Data cache writealloc
 Jun  1 19:46:00 localhost kernel: [    0.000000] On node 0 totalpages: 262144
 Jun  1 19:46:00 localhost kernel: [    0.000000] free_area_init_node: node 0, pgdat c0a35380, node_mem_map c0b76000
 Jun  1 19:46:00 localhost kernel: [    0.000000]   Normal zone: 1710 pages used for memmap
 Jun  1 19:46:00 localhost kernel: [    0.000000]   Normal zone: 0 pages reserved
 Jun  1 19:46:00 localhost kernel: [    0.000000]   Normal zone: 192850 pages, LIFO batch:31
 Jun  1 19:46:00 localhost kernel: [    0.000000]   HighMem zone: 594 pages used for memmap
 Jun  1 19:46:00 localhost kernel: [    0.000000]   HighMem zone: 66990 pages, LIFO batch:15
 Jun  1 19:46:00 localhost kernel: [    0.000000] script_init enter!
 Jun  1 19:46:00 localhost kernel: [    0.000000] script_init exit!
 Jun  1 19:46:00 localhost kernel: [    0.000000] PERCPU: Embedded 8 pages/cpu @c148d000 s11968 r8192 d12608 u32768
 Jun  1 19:46:00 localhost kernel: [    0.000000] pcpu-alloc: s11968 r8192 d12608 u32768 alloc=8*4096
 Jun  1 19:46:00 localhost kernel: [    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
 Jun  1 19:46:00 localhost kernel: [    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 259840
 Jun  1 19:46:00 localhost kernel: [    0.000000] Kernel command line: console=tty1 root=/dev/mmcblk0p1 rootwait rootfstype=ext4 cgroup_enable=memory swapaccount=1 sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_no_mali_mem_reserve sunxi_fb_mem_reserve=16 panic=10 consoleblank=0 enforcing=0 loglevel=7
 Jun  1 19:46:00 localhost kernel: [    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
 Jun  1 19:46:00 localhost kernel: [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
 Jun  1 19:46:00 localhost kernel: [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
 Jun  1 19:46:00 localhost kernel: [    0.000000] allocated 2097152 bytes of page_cgroup
 Jun  1 19:46:00 localhost kernel: [    0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
 Jun  1 19:46:00 localhost kernel: [    0.000000] Memory: 1024MB = 1024MB total
 Jun  1 19:46:00 localhost kernel: [    0.000000] Memory: 758608k/758608k available, 289968k reserved, 270336K highmem
 Jun  1 19:46:00 localhost kernel: [    0.000000] Virtual kernel memory layout:
 Jun  1 19:46:00 localhost kernel: [    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]     vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]     lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]       .text : 0xc0008000 - 0xc096bf2c   (9616 kB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]       .init : 0xc096c000 - 0xc09beec0   ( 332 kB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]       .data : 0xc09c0000 - 0xc0a3a1d0   ( 489 kB)
 Jun  1 19:46:00 localhost kernel: [    0.000000]        .bss : 0xc0a3a984 - 0xc0b75bd0   (1261 kB)
any help me ?
 
 
 
 
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