的ISP 程序。这个区域的内容在芯片出厂后没有人能够修改或擦除,即它是一个ROM 区。 在每个STM32 的芯片上都有两个管脚BOOT0 和BOOT1,这两个管脚在芯片复位时的电平状态决定了芯片复 位后从哪个区域开始执行程序,见下表: 要注意的是,一般不使用内置SRAM 启动(BOOT1=1 BOOT0=1),因为SRAM 掉电后数据就丢失。
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盒子是CM211-2 朝歌,用putty刷机异常emmc引导模式读取错误,这个如何解决,请教各位,谢谢。 以下是代码信息: Bootrom start Boot Media: eMMC (Default Speed) eMMC: read timeout. eMMC: read timeout. eMMC boot mode read error. Enter usb bootstrap by flash Usb disk(1): USB(1): no found "fastboot...
The question is if bootROM will be able to boot from eMMC 5.0 - 5.1 version card ? We are designing product in which we are planning to boot from eMMC, RM says that uSDHC supports JEDEC 4.5 and as far as I know 5.0/1 versions are backward compatible with 4.5 so it should work. Co...
I want to boot from emmc flash with a SPL and a baremetal binary. I used the same build flow on rocketboards(HWLIB) to build my image. And use ums 0 mmc 0 to mount the emmcblk to /dev/sda. Then I used the order : dd if=SD_imga.img of=/d...
Hi Carlos, by saying that eMMC5.1 is not supported you mean bootROM won't be able to boot from eMMC5.0/5.1 cards or it will fallback to 4.5 standard
There is an EMMC. I want to boot from emmc flash with a SPL and a baremetal binary. I used the same build flow on rocketboards(HWLIB) to build my image. And use ums 0 mmc 0 to mount the emmcblk to /dev/sda. Then I used the order : dd if=SD...
I.MX6U 支持多种启动方式以及启动设备,比如可以从 SD/EMMC、 NAND Flash、 QSPI Flash等启动。 i.MX6UL完整的启动流程如下图所示,完成启动任务的代码位于0x0000 0000 地址处的Boot ROM。 启动流程过程大致可分为六步。①检查CPU的ID ,②检查复 位状态,③获取启动方式,④加载程序映像,⑤校验映像,⑥跳转到映像...
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There is an EMMC. I want to boot from emmc flash with a SPL and a baremetal binary. I used the same build flow on rocketboards(HWLIB) to build my image. And use ums 0 mmc 0 to mount the emmcblk to /dev/sda. Then I used the order : dd if=SD...