我正在尝试对我的电子阅读器进行逆向工程。它是丹佛 EBO-620。我想更改屏幕外图像并添加我自己的字体。在Reddit 的帮助下，我设法记录了启动顺序（如下所示），但我不确定下一步应该做什么。
任何帮助是极大的赞赏！
=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2020.05.27 18:56:10 =~=~=~=~=~=~=~=~=~=~=~=
Âÿ ÿHELLO! BOOT0 is starting!
initializing SDRAM OK.
NAND_RequestDMA ok
Succeed in opening nand flash.
Succeed in reading Boot1 file head.
The size of Boot1 is 0x00034000.
The file stored in 0X00000000 of block 2 is perfect.
Check is correct.
Ready to disable icache.
Succeed in loading Boot1.
Jump to Boot1.
begin to init file system
bat vol = 4046
1
NB1 : enter NFB_Init
nand_for_boot1.c 135get the good blk ratio from hwscan : 631571392
NB1 : enter phy init
[NAND] nand driver version: 0x0x00000002, 0x0x00000011, data: 0x20120926
NAND_RequestDMA ok
[SCAN_DBG] Nand flash chip id is:0x0x0000002c 0x0x00000044 0x0x00000044 0x0x00000000 0x0x8042506c 0x0x0000004b
[SCAN_DBG] ==============Nand Architecture Parameter==============
[SCAN_DBG] Nand Chip ID: 0x0x4b44442c 0x0xffffffff
[SCAN_DBG] Nand Chip Count: 0x0x00000001
[SCAN_DBG] Nand Chip Connect: 0x0x00000001
[SCAN_DBG] Nand Rb Connect Mode: 0x0x00000001
[SCAN_DBG] Sector Count Of Page: 0x0x00000010
[SCAN_DBG] Page Count Of Block: 0x0x00000100
[SCAN_DBG] Block Count Of Die: 0x0x00000800
[SCAN_DBG] Plane Count Of Die: 0x0x00000002
[SCAN_DBG] Die Count Of Chip: 0x0x00000001
[SCAN_DBG] Bank Count Of Chip: 0x0x00000001
[SCAN_DBG] Optional Operation: 0x0x00000008
[SCAN_DBG] Access Frequence: 0x0x00000028
[SCAN_DBG] ECC Mode: 0x0x00000005
[SCAN_DBG] Read Retry Type: 0x0x00000000
[SCAN_DBG] DDR Type: 0x0x00000000
[SCAN_DBG] =======================================================
[SCAN_DBG] ==============Optional Operaion Parameter==============
[SCAN_DBG] MultiPlaneReadCmd: 0x0x00000000, 0x0x00000030
[SCAN_DBG] MultiPlaneWriteCmd: 0x0x00000011, 0x0x00000080
[SCAN_DBG] MultiPlaneCopyReadCmd: 0x0x00000000, 0x0x00000000, 0x0x00000035
[SCAN_DBG] MultiPlaneCopyWriteCmd: 0x0x00000085, 0x0x00000011, 0x0x00000080
[SCAN_DBG] MultiPlaneStatusCmd: 0x0x00000070
[SCAN_DBG] InterBnk0StatusCmd: 0x0x00000078
[SCAN_DBG] InterBnk1StatusCmd: 0x0x00000078
[SCAN_DBG] BadBlockFlagPosition: 0x0x00000001
[SCAN_DBG] MultiPlaneBlockOffset: 0x0x00000001
[SCAN_DBG] =======================================================
NB1 : nand phy init ok
src\format\nand_format.c 2623[FORMAT_ERR] format nand flash*********!
PHY_PageReadSpare : too much ecc err,bank 0x00000000 block 0x00000000,page 0x00000001
PHY_PageReadSpare : too much ecc err,bank 0x00000000 block 0x00000000,page 0x00000000
NB1 : init ok
mount successfully.
0
Source clock is HOSC, preScale=64, interval=375
Mount Parts Thread runniMInit : enter init nand flash driver
nand driver version: 0x2 0x11
nand_drv.c 166 ---------------
------
nand_drv.c 192 --nand disk size: 0x780000
partition [D] plug in..
partition [Z] plug in..
Mount Parts Thread work now.....
partition [E] plug in..
Mount Parts Thread work end....
$$$$ eink clock is 8 $$$$$
eink_GetFileCntFromDir path = v:\
eLIBs_opendir failed!
AWF fp=0
-------------open awf file failed, try to open backup awf-----------
AWF file length=545 K
LCD TCON OPEN
MSG:L3723(Drv_eink.c): set vcom mode as IO contrl, not pwm
.....................................................................................................................
.Please press enter key(keypad or irkey) to continue!
..............................................................
.....................................................................................................................
Esh_StartUp
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = 1
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
Execute startup script begin..............
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = -382909968
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = 1
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
Esh Error: OpenConfigFile y:\config\config.bin failed.
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = -382909968
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = 1
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_t41 set tmpNewCpu = 37yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = 1
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = -382909968
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
===================yyparse start====================
yynerrs.1 = 0
yynerrs.2 = 0
outtree->op_type = 1
yynerrs.3 = 0
&&&&&&&&&&&&&&&&&&&yyparse end&&&&&&&&&&&&&&&&&&&&&&&&&&&
...............Execute startup script end
Esh_StartUp finish
Esh msg: shell maidesktop_server_init plug tp start
desktop_server_init plug tp over
dsk_orchid_createDisk over
d_createDisk over
dsk_orchid_check over
dsk_voice_set_volume over
dsk_display_set_lcd_bright over
dsk_keytone_init over
dsk_keytone_set_state over
dsk_app_reg_init over
dsk_langres_set_type over
214 Date parameter is invalid!(Y2020, M5, D28)
214 Date parameter is invalid!(Y2020, M5, D28)
214 Date parameter is invalid!(Y2020, M5, D28)
eink_GetFileCntFromDir path = v:\
eLIBs_opendir failed!
AWF fp=0
-------------open awf file failed, try to open backup awf-----------
AWF file length=545 K
LCD TCON OPEN
MSG:L3723(Drv_eink.c): set vcom mode as IO contrl, not pwm
LCD TCON close
B þ ` €ÿ
编辑：对不起，我忘了说这个电子阅读器确实在全志 E200 芯片上运行。所以很可能是 allwinner os（可能是 2.0，但不确定）。