UART off board skyworth

mariano

Hello I have this skyworth network board with uart off, I ask teachers is there a way to open the UART port? I leave the boot print.

Hello world!{uni}[HP] svn723755 (Aug 27 2014 11:35:41)
NO3[no kb]

U-Boot 2012.07-home/svn/RT2989/bootcode-svn1160 (Jun 08 2017 - 13:22:08)

SCPU: BISR testing ....
SCPU: Finish BISR testing (OK)
CPU  : Cortex-A7 Dual core
Media: undefined
[krsv] use default uboot memory:
package type: 0x29800030
DRAM:  512 MiB
Watchdog: Enabled
pinmux_pcb_tv001_qfp176.c PinMuxInit 573 v3
lsadc_init init keypad:1
Board: Realtek Demo Board
POWER ON: AC
Cache: Enabled
Non-Cache Region: 1 MB@0x0b300000
MMC:   
MMC: non-cache ext_csd buffer  0x0b300000
MMC: non-cache ext_csd buffer2 0x0b300200
MMC: non-cache temp buffer     0x0b300400


emmc:mmc_initial(1) Jun  8 2017 13:23:23
emmc: clock switch to 16MHz,(normal)
Pin mux mode 0
R_GPD=0xb801b118 R_GPO=0xb801b134 R_BIT=0x00000004
reset finish...
RTD298x eMMC: 0
MMC: Test for eMMC version
emmc:bus width switch to 8bits
emmc: clock switch to 25MHz,(normal)
Device: RTD298x eMMC
Manufacturer ID: 11
OEM: 100
Name: 004G6
Tran Speed: 52000000
Rd Block Len: 512
MMC version 4.0
High Capacity: Yes
Capacity: 3.7 GiB
Bus Width: 8-bit
Extern param: MMC blk:0x7c (to 0xa000)
## [WARN] rescue block no: 0x0 (size: 0x0)
Factory: MMC
Factory: seq:0x3f1e, blk:0xe000(pp:1), size:0x9e200 (to 0xa900000)
get_bootparam:
------------tmp/factory/bin_panel/000BootParam.h found
BOOT_POWER_ON_MODE=1
BOOT_LOGO_ENABLE=1
BOOT_LOGO_PWMDUTY=254
CUSTOM_VIDEO1_LENG=0
CUSTOM_VIDEO2_LENG=0
BOOT_MUSIC_ENABLE=0
CUSTOM_AUDIO1_LENG=0
CUSTOM_AUDIO2_LENG=0
LOCAL_UPGRADE_EN=0
BOOT_ISSTANDBY_DATA=0
BOOT_RECOVERY_STANDBY=0
BOOT_UP_CUNT=0
BOOT_UART_ON_OFF=2
BOOTUP_POLICY=0
IMGFILE_PATTERN not found
[bootparam.c 324]:can't IMGFILE_PATTERN
bootup_policy=0, bootparam.bootup_cunt=0
+++++++close uart!!!!!!

技术支持008

The serial port is closed and you cannot see any useful information.