实战小米L43M5-AZ不开机

465212519

先声明，本人文化水平有限，大家将就看。次机是同行转手机，   插电指示灯不亮，电源输出12V正常，故障锁定主板，测量CPU  ddr   emmc供电都正常，链接809查看打印信息，故障打印信息如下图

从打印信息分析，很明显EMMC问题，热风枪伺候，取下EMMC，放入809H座子读取，果然，显示错误，显示如下图

旧板取下一个8G的EMMC,植好锡，写入先前备份好的数据，装机，打印信息正常了，如下（打印信息省约大部分）


BL2 Built : 12:59:51, Jan  3 2018.
txl g3eab014 - xiaobo.gu@droid12

Board ID = 0
set vcck to 1100 mv
set vddee to 1000 mv
DRAM reset...
init panel power
board_id = 0
CPU clk: 1200MHz
DQS-corr enabled
DDR scramble enabled
DDR4 chl: Rank0+1 @ 792MHz - FAIL
DDR4 chl: Rank0 @ 792MHz
bist_test rank: 0 24 00 49 3a 1a 5a 21 00 42 3e 20 5c 23 00 46 3d 21 5a 1f 00 3f 42 23 61 664   - PASS

Rank0: 2048MB(auto)-2T-18
AddrBus test pass!
-s
Load fip header from eMMC, src: 0x0000c200, des: 0x01400000, size: 0x00004000
Load bl30 from eMMC, src: 0x00010200, des: 0x01100000, size: 0x0000d600
Load bl31 from eMMC, src: 0x00020200, des: 0x10100000, size: 0x0001b400
Load bl33 from eMMC, src: 0x0003c200, des: 0x01000000, size: 0x000e7800
NOTICE:  BL3-1: v1.0(debug):e46962f
NOTICE:  BL3-1: Built : 17:20:18, Apr 20 2017
aml log : bl31 normal boot !
[Image: txl_v1.1.3166-87ff079 2018-01-02 17:24:45 jianxin.pan@droid06]
OPS=0x02
fa 8b 7 5c 30 3 25 f6 21 a0 be c9 [0.707920 Inits done]
secure task start!
high task start!
low task start!
INFO:    BL3-1: Initializing runtime services
WARNING: No OPTEE provided by BL2 boot loader
ERROR:   Error initializing runtime service opteed_fast
INFO:    BL3-1: Preparing for EL3 exit to normal world
INFO:    BL3-1: Next image address = 0x1000000
INFO:    BL3-1: Next image spsr = 0x3c9


U-Boot 2015.01-g40b3667 (Apr 19 2018 - 18:22:49), Build: jenkins-Matrix_release-1201

DRAM:  2 GiB
Relocation Offset is: 76e8d000
register usb cfg[0][1] = 0000000077f642f0
gpio: pin GPIOH_3 (gpio 31) value is 1
gpio: pin GPIOH_2 (gpio 30) value is 1
gpio: pin GPIODV_5 (gpio 21) value is 1
gpio: pin GPIOZ_1 (gpio 39) value is 1
gpio: pin GPIOAO_2 (gpio 83) value is 1
gpio: pin GPIOAO_11 (gpio 92) value is 1
MMC:   aml_priv->desc_buf = 0x0000000073e8dd50
aml_priv->desc_buf = 0x0000000073e8fee0
SDIO Port B: 0, SDIO Port C: 1
emmc/sd response timeout, cmd8, status=0x1ff2800
emmc/sd response timeout, cmd55, status=0x1ff2800
[mmc_init] mmc init success
mmc read lba=0x14000, blocks=0x400
      Amlogic multi-dtb tool
      Multi dtb detected
txl_mt_cvte
      Multi dtb tool version: v2 .
      Support 5 dtbs.
        aml_dt soc: txl platform: mt variant: cvte
        dtb 0 soc: txl   plat: mt   vari: 950-1g
        dtb 1 soc: txl   plat: mt   vari: cvte
        dtb 2 soc: txl   plat: mt   vari: magnolia
        dtb 3 soc: txl   plat: mt   vari: mi
        dtb 4 soc: txl   plat: mt-india   vari: hw-43
      Find match dtb: 1
start dts,buffer=0000000073e925f0,dt_addr=0000000073e9edf0
parts: 14
00:      logo   0000000000400000 1
01:  recovery   0000000001000000 1
02:     param   0000000002000000 2
03:     crypt   0000000001000000 1
04:  cri_data   0000000000800000 2
05:    tvinfo   0000000000a00000 4
06:     panic   0000000000400000 4
07:   persist   0000000000800000 4
08:      misc   0000000001000000 1
09:      boot   0000000001400000 1
10:    system   0000000040000000 1
11:     cache   0000000010000000 2
12:    backup   0000000024000000 4
13:      data   ffffffffffffffff 4
get_dtb_struct: Get emmc dtb OK!
overide_emmc_partition_table: overide cache
[mmc_get_partition_table] skip partition cache.
Partition table get from SPL is :

开机声音图像俱佳，维修到此结束，EMMC程序文件太大，上传不了
需要EMMC程序的可加我QQ465212519   可以百度网盘下载了

1730467916

https://pan.baidu.com/s/1HxPYp6V0e5-u9SlWq4AkNQ
刚刚购买了不能下载:

364699122

谢谢 分享经验

Hi999

谢谢你的分享

lisupig

Thank you for your post

qj711

今天我也修一台是EMMC坏数据的，不开机，写以前备份的数据写入OK。

zjjh

楼主你的QQ的头像是用的周星驰吗？

zjjh

谢谢楼主，辛苦了。

ZJF898996

谢谢 分享经验   

DongBeide

谢谢楼主分享的，辛苦了...

玮俊子

领教了，好好好好好好好好