i.mx6 在uboot命令终端mmc使用，emmc烧写分区

只看该作者 · 2015-4-23 21:26

各位大侠，小弟在此请教啦！！！弄了好久都没弄出来。
问题描述：
         我在i.mx6的uboot命令终端用命令 mmc write 3 0x10900000 0xC000 0xA0000  烧写
system.img文件  但是烧写玩之后安卓系统起不来。系统能运行到kernel这边，但是到了system.img就卡住了。我看MFG_tools工具烧写的分区就是 Device Boot Start End MiB #blocks Id  System
/dev/mmcblk0p1       8    15    8    8192 83  Linux
/dev/mmcblk0p2       16    23    8    8192 83  Linux
/dev/mmcblk0p3       24 3151 3128 3203072 5  Extended
/dev/mmcblk0p4    3152 7563 4412 4517888 b  W95 FAT32
/dev/mmcblk0p5       24+ 535 512- 524287+  83  Linux
/dev/mmcblk0p6    536+  1047 512- 524287+  83  Linux
/dev/mmcblk0p7    1048+  3095 2048- 2097151+  83  Linux
/dev/mmcblk0p8    3096+  3103    8-    8191+  83  Linux
/dev/mmcblk0p9    3104+  3111    8-    8191+  83  Linux

我system.img是按照下面这行来做的。
<CMD state="Updater" type="push" body="pipe dd of=/dev/mmcblk0p5 bs=512" file="files/android/system.img">Sending and writting system.img</CMD>
但是就是起不来。在这问一下：第五个分区起始地址是24M吗？  24+是什么意思呢？

只看该作者 · 2015-4-23 21:33

MFG-TOOLS的烧写工具是这样烧写的：
<LIST name="Android-SabreSD-eMMC" desc="Choose eMMC android as media">
  
<CMD state="BootStrap" type="boot" body="BootStrap" file ="u-boot-mx6q-sabresd.bin" >Loading U-boot</CMD>
<CMD state="BootStrap" type="load" file="uImage" address="0x10800000"
      loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" >Loading Kernel.</CMD>
<CMD state="BootStrap" type="load" file="initramfs.cpio.gz.uboot" address="0x10C00000"
      loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" >Loading Initramfs.</CMD>
<CMD state="BootStrap" type="jump" > Jumping to OS image. </CMD>
<CMD state="Updater" type="push" body="$ dd if=/dev/zero of=/dev/mmcblk0 bs=512 seek=1536 count=16">clean up u-boot parameter</CMD>
<CMD state="Updater" type="push" body="$ echo 1 > /sys/devices/platform/sdhci-esdhc-imx.3/mmc_host/mmc0/mmc0:0001/boot_config">access boot partition 1</CMD>
<CMD state="Updater" type="push" body="send" file="files/android/u-boot.bin">Sending U-Boot</CMD>
<CMD state="Updater" type="push" body="$ dd if=$FILE of=/dev/mmcblk0 bs=512 seek=2 skip=2">write U-Boot to sd card</CMD>

<CMD state="Updater" type="push" body="$ echo 8 > /sys/devices/platform/sdhci-esdhc-imx.3/mmc_host/mmc0/mmc0:0001/boot_config">access user partition and enable boot partion 1 to boot</CMD>
<CMD state="Updater" type="push" body="send" file="mksdcard-android.sh.tar">Sending partition shell</CMD>
<CMD state="Updater" type="push" body="$ tar xf $FILE "> Partitioning...</CMD>
<CMD state="Updater" type="push" body="$ sh mksdcard-android.sh /dev/mmcblk0"> Partitioning...</CMD>

<CMD state="Updater" type="push" body="$ ls -l /dev/mmc* ">Formatting sd partition</CMD>

<CMD state="Updater" type="push" body="send" file="files/android/boot.img">Sending kernel uImage</CMD>
<CMD state="Updater" type="push" body="$ dd if=$FILE of=/dev/mmcblk0p1">write boot.img</CMD>
<CMD state="Updater" type="push" body="frf">flush the memory.</CMD>

<CMD state="Updater" type="push" body="$ mkfs.ext4 -b 4096 -m 0 /dev/mmcblk0p4">Formatting data partition</CMD>
<CMD state="Updater" type="push" body="$ mkfs.ext4 /dev/mmcblk0p5">Formatting system partition</CMD>
<CMD state="Updater" type="push" body="$ mkfs.ext4 /dev/mmcblk0p6">Formatting cache partition</CMD>
<CMD state="Updater" type="push" body="frf">flush the memory.</CMD>
<CMD state="Updater" type="push" body="$ mkfs.ext4 /dev/mmcblk0p7">Formatting device partition</CMD>
<CMD state="Updater" type="push" body="pipe dd of=/dev/mmcblk0p5 bs=512" file="files/android/system.img">Sending and writting system.img</CMD>
<CMD state="Updater" type="push" body="frf">flush the memory.</CMD>



<CMD state="Updater" type="push" body="pipe dd of=/dev/mmcblk0p2 bs=512" file="files/android/recovery.img">Sending and writting recovery.img</CMD>

<CMD state="Updater" type="push" body="frf">Finishing rootfs write</CMD>

<CMD state="Updater" type="push" body="$ echo Update Complete!">Done</CMD>

但是所以我把system.img烧写在了第五分区的24M为起始地址，这样做对吗？第五分区的地址是否正确呢？是24M吗？