本帖最后由 yorda 于 2015-1-25 21:31 编辑
参考Sabre SDB做的自己板子，经检查各种电源都应该没问题，拟使用SPI_NOR引导uboot和eMMC存uImage和rootfs，emmc接到SD3上，用MFG烧写时，BootStrap和烧写SPI_NOR都过去了，MFG执行到
<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>时出错了
现在貌似MCU没有找到eMMC，因为加电后示波器量SD3_CMD没信号，而SD4_CMD却有信号
请教大侠们，是不是不能直接使用SDB的u-boot，需要自己修改配置啊，u-boot下的includes/configs/、board/freescale/下的文件怎么改，改什么? 另外，内核要不要修改，修改什么？谢谢
如果需要修改uboot和kernel哪里可以下载到patch? 再次感谢
我的ucl2.xml是这样：
<CMD state="BootStrap" type="boot" body="BootStrap" file ="u-boot-mx6q-sabresd.bin" >Loading uboot.</CMD>
<CMD state="BootStrap" type="load" file="uImage" address="0x10800000"
loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" >Doing Kernel.</CMD>
<CMD state="BootStrap" type="load" file="initramfs.cpio.gz.uboot" address="0x10C00000"
loadSection="OTH" setSection="OTH" HasFlashHeader="FALSE" >Doing Initramfs.</CMD>
<CMD state="BootStrap" type="jump" > Jumping to OS image. </CMD>
<!--burn the uboot to SPI-NOR: -->
<CMD state="Updater" type="push" body="$ flash_erase /dev/mtd0 0 0">Erasing Boot partition</CMD>
<CMD state="Updater" type="push" body="send" file="files/u-boot.bin">Sending U-Boot</CMD>
<CMD state="Updater" type="push" body="$ dd if=$FILE of=/dev/mtd0 bs=512">write U-Boot to SPI-NOR</CMD>
<!-- partitioning the eMMC: -->
<CMD state="Updater" type="push" body="$ 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.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.sh /dev/mmcblk0"> Partitioning SD card now...</CMD>
<!-- burn the kernel: -->
<CMD state="Updater" type="push" body="send" file="files/uImage">Sending kernel uImage</CMD>
<CMD state="Updater" type="push" body="$ dd if=$FILE of=/dev/mmcblk0 bs=1M seek=1 conv=fsync">write kernel image to emmc</CMD>
<!-- burn the rootfs: -->
<CMD state="Updater" type="push" body="$ mkfs.ext3 -j /dev/mmcblk0p1">Formatting rootfs partition</CMD>
<CMD state="Updater" type="push" body="$ mkdir -p /mnt/mmcblk0p1"/>
<CMD state="Updater" type="push" body="$ mount -t ext3 /dev/mmcblk0p1 /mnt/mmcblk0p1"/>
<CMD state="Updater" type="push" body="pipe tar -jxv -C /mnt/mmcblk0p1" file="files/rootfs.tar.bz2">Sending and writting rootfs</CMD>
<CMD state="Updater" type="push" body="frf">Finishing rootfs write</CMD>
<CMD state="Updater" type="push" body="$ umount /mnt/mmcblk0p1">Unmounting rootfs partition</CMD>
<CMD state="Updater" type="push" body="$ echo Update Complete!">Done</CMD>
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