TRIMUI

如何使用root帳號透過UART登入

---

updater

#!/bin/sh
dir=`dirname $0`
cd $dir

mount -o remount,rw /
cp inittab /etc/
sync
reboot

inittab

null::sysinit:/bin/mount -o remount,rw /
null::sysinit:/bin/mkdir -p /dev/pts
null::sysinit:/bin/mount -a
::sysinit:/etc/init.d/rcS boot
/dev/console::respawn:-/bin/sh
::ctrlaltdel:/sbin/reboot
null::shutdown:/bin/umount -a -r

打包成TrimuiUpdateV9999_root_login.zip

$ zip TrimuiUpdateV9999_root_login.zip updater inittab

接著刷入TrimuiUpdateV9999_root_login.zip，開機就會以root帳號登入(baudrate: 115200bps)

BusyBox v1.27.2 () built-in shell (ash)

 _____  _              __     _
|_   _||_| ___  _ _   |  |   |_| ___  _ _  _ _
  | |   _ |   ||   |  |  |__ | ||   || | ||_'_|
  | |  | || | || _ |  |_____||_||_|_||___||_,_|
  |_|  |_||_|_||_|_|  Tina is Based on OpenWrt!
 ----------------------------------------------
 Tina Linux (Neptune, 5C1C9C53)
 ----------------------------------------------
@Linux:/#

@Linux:/# cat /proc/cpuinfo
  processor       : 0
  model name      : ARM926EJ-S rev 5 (v5l)
  BogoMIPS        : 358.80
  Features        : swp half thumb fastmult edsp java
  CPU implementer : 0x41
  CPU architecture: 5TEJ
  CPU variant     : 0x0
  CPU part        : 0x926
  CPU revision    : 5

  Hardware        : Allwinner A1X (Device Tree)
  Revision        : 0000
  Serial          : 0000000000000000

@Linux:/# cat /proc/version
  Linux version 3.10.65 (alfchen@alfchen-ubuntu) (gcc version 6.4.1 (OpenWrt/Linaro GCC 6.4-2017.11 2017-11) ) #508 Sun Aug 30 16:04:27 UTC 2020

@Linux:/# cat /proc/meminfo
  MemTotal:          58296 kB
  MemFree:           11024 kB
  Buffers:            6484 kB
  Cached:            27084 kB
  SwapCached:            0 kB
  Active:            13760 kB
  Inactive:          23320 kB
  Active(anon):       1900 kB
  Inactive(anon):     1652 kB
  Active(file):      11860 kB
  Inactive(file):    21668 kB
  Unevictable:           4 kB
  Mlocked:               0 kB
  SwapTotal:        131068 kB
  SwapFree:         131068 kB
  Dirty:                 0 kB
  Writeback:             0 kB
  AnonPages:          3544 kB
  Mapped:             2816 kB
  Shmem:                36 kB
  Slab:               6092 kB
  SReclaimable:       4204 kB
  SUnreclaim:         1888 kB
  KernelStack:         400 kB
  PageTables:          264 kB
  NFS_Unstable:          0 kB
  Bounce:                0 kB
  WritebackTmp:          0 kB
  CommitLimit:      160216 kB
  Committed_AS:      50440 kB
  VmallocTotal:     958464 kB
  VmallocUsed:        4152 kB
  VmallocChunk:     712272 kB

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