{"id":2575,"date":"2026-03-20T23:30:38","date_gmt":"2026-03-20T21:30:38","guid":{"rendered":"https:\/\/www.fabienm.eu\/wordpress\/?p=2575"},"modified":"2026-03-20T23:39:42","modified_gmt":"2026-03-20T21:39:42","slug":"mk20-boot","status":"publish","type":"post","link":"https:\/\/www.fabienm.eu\/wordpress\/2026\/03\/20\/mk20-boot\/","title":{"rendered":"MK20 boot"},"content":{"rendered":"\n

En ouvrant le MK20 on trouve 6 pads sur le cot\u00e9 dont un semble correspondre \u00e0 l’UART de boot du T113-S3.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Si on branche un adaptateur USB-UART dessus on obtient la sortie suivante :<\/p>\n\n\n

$ tio -b 115200<\/span> \/dev\/ttyUSB0\n[tio 22<\/span>:20<\/span>:30<\/span>] tio v1.32<\/span>\n[tio 22<\/span>:20<\/span>:30<\/span>] Press ctrl-t q to quit\n[tio 22<\/span>:20<\/span>:30<\/span>] Connected\n[192<\/span>]HELLO! BOOT0 is starting!\n[195<\/span>]BOOT0 commit : 4<\/span>d16602\n[198<\/span>]set<\/span> pll start\n[200]fix vccio detect value:0xc0\n[207]periph0 has been enabled\n[210]set<\/span> pll end\n[211][pmu]: bus read error\n[214]board init ok\n[216]ZQ value = 0x2d\n[218]get_pmu_exist() = -1\n[221]ddr_efuse_type: 0xa\n[223]trefi:7.8ms\n[225][AUTO DEBUG] single rank and full DQ!\n[230]ddr_efuse_type: 0xa\n[232]trefi:7.8ms\n[234][AUTO DEBUG] rank 0 row = 13 \n[238][AUTO DEBUG] rank 0 bank = 8 \n[241][AUTO DEBUG] rank 0 page size = 2 KB \n[245]DRAM BOOT DRIVE INFO: V0.33\n[248]DRAM CLK = 792 MHz\n[250]DRAM Type = 3 (2:DDR2,3:DDR3)\n[253]DRAMC read ODT  off.\n[256]DRAM ODT value: 0x42.\n[259]ddr_efuse_type: 0xa\n[262]DRAM SIZE =128 M\n[264]dram_tpr4:0x0\n[266]PLL_DDR_CTRL_REG:0xf8004100\n[269]DRAM_CLK_REG:0xc0000000\n[272][TIMING DEBUG] MR2= 0x18\n[279]DRAM simple test OK.\n[281]rtc standby flag is 0x0, super standby flag is 0x0\n[286]dram size =128\n[289]card no is 0\n[291]sdcard 0 line count 4\n[293][mmc]: mmc driver ver 2021-05-21 14:47\n[303][mmc]: Wrong media type 0x0\n[306][mmc]: ***Try SD card 0***\n[316][mmc]: HSSDR52\/SDR25 4 bit\n[319][mmc]: 50000000 Hz\n[321][mmc]: 3840 MB\n[323][mmc]: ***SD\/MMC 0 init OK!!!***\n[422]Loading boot-pkg Succeed(index=0).\n[426]Entry_name        = u-boot\n[433]Entry_name        = optee\n[437]Entry_name        = dtb\n[440]mmc not para\n[442]Jump to second Boot.\nM\/TC: OP-TEE version: 6aef7bb2-dirty (gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)) #1 Fri Jul 23 09:25:11 UTC 2021 arm\n\n\nU-Boot 2018.05-g6c4e831 (Sep 28 2025 - 10:28:48 +0000) Allwinner Technology\n\n[00.498]CPU:   Allwinner Family\n[00.501]Model: sun8iw20\n[00.503]DRAM:  128 MiB\n[00.506]Relocation Offset is: 04e9b000\n[00.535]secure enable bit: 0\n[00.538]CPU=1008 MHz,PLL6=600 Mhz,AHB=200 Mhz, APB1=100Mhz  MBus=300Mhz\n[00.544]gic: sec monitor mode\n[00.551]flash init start\n[00.553]workmode = 0,storage type = 1\n[00.556][mmc]: mmc driver ver uboot2018:2021-06-15 14:00:00\n[00.562][mmc]: get<\/span> sdc_type fail and use default host:tm1.\n[00.568][mmc]: can't find node \"mmc0\",will add new node\n[00.572][mmc]: fdt err returned <no error>\n[00.576][mmc]: Using default timing para\n[00.580][mmc]: SUNXI SDMMC Controller Version:0x50310\n[00.598][mmc]: card_caps:0x3000000a\n[00.601][mmc]: host_caps:0x3000003f\n[00.606]sunxi flash init ok\n[00.608]line:703 init_clocks\n[00.611]drv_disp_init\nrequest pwm success, pwm7:pwm7:0x2000c00.\n[00.624]drv_disp_init finish\n[00.627]boot_gui_init:start\n[00.629]set<\/span> disp.dev2_output_type fail. using defval=0\nFDT ERROR:fdt_get_all_pin:get<\/span> property handle pinctrl-0 error:FDT_ERR_INTERNAL\ndisp_sys_pin_set_state, fdt_set_all_pin, ret=-1\n[00.646]\n\n\n\n\n[00.648]info: LCD model is MK20 \n[00.711]info: LCD_power_on_MK20_PLUS run \n[00.714]\n\n\n\n\n[00.716]boot_gui_init:finish\npart[00.746]\n\n\n\n\n[00.748]info: LCD model is MK20 \n[00.751]info: LCD_panel_init_MK20_PLUS run \n[00.755]info : init hardwave spi ... \n[00.760]info : init hardwave spi finish \npartno erro : can't find partition bootloader\n522061878098556 bytes read in 0 ms (12.9 MiB\/s)\n[00.817]info: load image... \n[01.467]\n\n\n\n\nno erro : can't find partition bootloader\n54 bytes read in 3 ms (17.6 KiB\/s)\n[01.487]bmp_name=bootlogo.bmp size 76938\n76938 bytes read in 9 ms (8.2 MiB\/s)\n[01.536]Loading Environment from SUNXI_FLASH... OK\n[01.572]Item0 (Map) magic is bad\n[01.575]the secure storage item0 copy0 magic is bad\n[01.581]Item0 (Map) magic is bad\n[01.584]the secure storage item0 copy1 magic is bad\n[01.589]Item0 (Map) magic is bad\nsecure storage read widevine fail\n[01.595]secure storage read widevine fail with:-1\nsecure storage read ec_key fail\n[01.602]secure storage read ec_key fail with:-1\nsecure storage read ec_cert1 fail\n[01.609]secure storage read ec_cert1 fail with:-1\nsecure storage read ec_cert2 fail\n[01.617]secure storage rea[01.620]LCD open finish\nd ec_cert2 fail with:-1\nsecure storage read ec_cert3 fail\n[01.627]secure storage read ec_cert3 fail with:-1\nsecure storage read rsa_key fail\n[01.635]secure storage read rsa_key fail with:-1\nsecure storage read rsa_cert1 fail\n[01.642]secure storage read rsa_cert1 fail with:-1\nsecure storage read rsa_cert2 fail\n[01.650]secure storage read rsa_cert2 fail with:-1\nsecure storage read rsa_cert3 fail\n[01.657]secure storage read rsa_cert3 fail with:-1\n[01.662]out of usb burn from boot: not need burn key\npartno erro : can't find partition private\nroot_partition is rootfs\nset<\/span> root to \/dev\/mmcblk0p5\n[01.682]update part info\n[01.689]update bootcmd\n[01.696]change working_fdt 0x46a5ae70 to 0x46a3ae70\n[01.717]update dts\ngeth_sys_init:624: get<\/span> node 'gmac0' error\ngeth_sys_init fail!\n[01.724]Board Net Initialization Failed\n[01.728]No ethernet found.\nHit any key to stop autoboot:  0 \n[01.972]no vendor_boot partition is found\nAndroid's image name: t113-pro\n[01.985]Starting kernel ...\n\n[01.987][mmc]: MMC Device 2 not found\n[01.991][mmc]: mmc 2 not find, so not exit\n<\/code><\/span>Langage du code\u00a0:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
Les trois PADs du dessus sont certainement une UART pour le GD32.<\/p>\n","protected":false},"excerpt":{"rendered":"
En ouvrant le MK20 on trouve 6 pads sur le cot\u00e9 dont un semble correspondre \u00e0 l’UART de boot du T113-S3. Si on branche un adaptateur USB-UART dessus on obtient la sortie suivante : Les trois PADs du dessus sont certainement … Continuer la lecture →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[192],"tags":[407,111,391,404,403],"class_list":["post-2575","post","type-post","status-publish","format-standard","hentry","category-electronique","tag-407","tag-buildroot","tag-mk20","tag-reverse","tag-uboot"],"_links":{"self":[{"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/posts\/2575","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/comments?post=2575"}],"version-history":[{"count":3,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/posts\/2575\/revisions"}],"predecessor-version":[{"id":2580,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/posts\/2575\/revisions\/2580"}],"wp:attachment":[{"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/media?parent=2575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/categories?post=2575"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fabienm.eu\/wordpress\/wp-json\/wp\/v2\/tags?post=2575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}