如何列出uBoot叠加层

您在eMMC上的u-boot版本太旧，从而阻止了新的u-boot覆盖功能。
只需保存您的需求并清除eMMC中的MBR ......
sudo dd if = / dev / zero of = / dev / mmcblk1 bs = 1M count = 10
问候，



以下为原文

        Your version of u-boot on the eMMC is too old thus blocking the new u-boot overlays feature.
Just save what your need and clear out the MBR in the eMMC…
sudo dd if=/dev/zero of=/dev/mmcblk1 bs=1M count=10Regards,

谢谢，虽然确实升级了eMMC中的引导加载程序但我仍然很好奇，如果有办法知道加载了哪些叠加，我曾经：cat / sys / devices / platform / bone_capemgr / slots但是该文件不再存在
。
我知道它是移动到uBoot叠加只是好奇如果有一种方法加载什么而不看uEnv.tx.



以下为原文

        Thanks, although that did upgrade the bootloader in the eMMC I’m still curious if there is a way to know which overlays are loaded, I used to: cat /sys/devices/platform/bone_capemgr/slots but that file does not exist anymore. I’m aware it was move to uBoot overlays just curious if there is a way to what is loaded without looking at uEnv.tx.

@hoffiz对不起，只有eeprom可检测/加载的capes会显示在转储到/ proc / cmdline的列表中，任何刚刚加载到/boot/uEnv.txt的内容都不会在/boot/uEnv.txt之外的任何地方报告
你可以看到DLPDLCR2000斗篷的一个例子，因为我们需要在启动时发出2个i2c命令来切换它的显示配置：  
github.com   
RobertCNelson /启动脚本/ BLOB /主/启动/ am335x_evm.sh＃L50-L59
unset detected_capes
detected_capes = $（cat / proc / cmdline | sed's / /  n / g'| grep uboot_detected_capes = || true）
如果[！
“x $ {detected_capes}”=“x”];
然后
got_DLPDLCR2000 = $（echo $ {detected_capes} | grep DLPDLCR2000 || true）
如果[！
“x $ {got_DLPDLCR2000}”=“x”];
然后
echo“$ {log} found：DLPDLCR2000 init display”
i2cset -y 2 0x1b 0x0b 0x00 0x00 0x00 0x00 i ||
真正
i2cset -y 2 0x1b 0x0c 0x00 0x00 0x00 0x1b i ||
真正
科幻
科幻      
问候，



以下为原文

        @hoffiz sorry no, only eeprom detectable/loaded capes will show up in list dumped to  /proc/cmdline, anything that’s just loaded thru /boot/uEnv.txt will not be reported anywhere outside /boot/uEnv.txt
You can see one example of that with the DLPDLCR2000 cape, as we need to issue 2 i2c commands to switch it’s display configuration on bootup:
        github.com        RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh#L50-L59

• unset detected_capes
  
• detected_capes=$(cat /proc/cmdline | sed 's/ /n/g' | grep uboot_detected_capes= || true)
  
• if [ ! "x${detected_capes}" = "x" ] ; then
  
• got_DLPDLCR2000=$(echo ${detected_capes} | grep DLPDLCR2000 || true)
  
• if [ ! "x${got_DLPDLCR2000}" = "x" ] ; then
  
• echo "${log} found: DLPDLCR2000 init display"
  
• i2cset -y 2 0x1b 0x0b 0x00 0x00 0x00 0x00 i || true
  
• i2cset -y 2 0x1b 0x0c 0x00 0x00 0x00 0x1b i || true
  
• fi
  
• fi
  

                Regards,

谢谢。
酷斗篷:)。



以下为原文

        Thank you. Cool cape :).