i.mx rt1062 不能从外部 QSPI FLASH启动问题

[cams]

Hi，
我在i.mx rt1062系统应用中通过flexSPIA1连接一片GD25Q64C的flash，在SDK_2.70_EVK-MIMXRT1060 IAR led_blinky工程flexspi_nor_debug中可以用DAPLink Download并运行，但是断电后再上电系统却不能从QSPI FLASH中启动运行，用MCU NXP Boot Unitily 读出eFuse发现0x460寄存器值为0x00000008,即DIR_BT_DIS=1(1 - Direct boot from external
memory is not allowed)，是不是因为DIR_BT_DIS=1才不能从外部QSPI FLASH 启动的？

我的启动设置为：boot_mode[1:0]=10b,

                             boot_cfg1[7:0]=0x00,

                             boot_cfg2[3:0]=0x0; 

IAR 中有设置：   XIP_EXTERNAL_FLASH=1
                            XIP_BOOT_HEADER_ENABLE=1
                            CPU_MIMXRT1062DVJ6A

[cams]

感谢您的回复！

不知道什么原因用NXP-MCUBootUtility-2.2.0软件能加载到flashloader，但是识别不了GD25Q64C芯片，所以下载不了image，如图1：我确定led debug的地址是从外部qspi_flash运行的，如下图：

我用jflash软件用jlink也能成功将NXP-MCUBootUtility-2.2.0\apps\NXP_MIMXRT1060-EVK_Rev.A1\led_blinky_0x6000a000.srec 烧写到GD25Q64C flash中，但是也不能成功启动运行。问题出在哪里呢？

[kerryzhou]

楼主你好！

你用MCUBootUtility tool连接你的芯片是不是能连上呢？

看看log是什么信息？我看你之前能读fuse，说明你已经失败了你的QSPI flash了。

但是看你左下角的memory信息好像并没有读出来，我看你的QE位置也配置的对的。

另外，你有没有参考我们的AN12183 How to Enable Debugging for FLEXSPI NOR Flash.pdf

https://www.nxp.com/docs/en/nxp/application-notes/AN12183.pdf 

https://www.nxp.com/webapp/Download?colCode=AN12183SW&location=null 

直接读写你的外部flash是否都可以成功？

还有，你能用IAR debug， 你读下你的0X60000000, 0X60001000， 看看这些地方的IVT, 等信息， 和你的0X60002000是否能对应起来。你的app起始是0X60002000吗？

我现在是在家办公，所以手里没有你的芯片，后续如果你还有问题，等我会公司，找看看是否有你的QSPI，然后也帮你试试。

Have a great day,
Kerry

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[cams]

感谢Kerry Zhou!

问题已经解决，是flexspi_nor_config里的DUMMY_SDR周期数配置错了，把它改成0x06就可以正常启动了；但是用MCUBootUtility tool连接却无论如何就识别不出GD25C64C flash。

[kerryzhou]

Hi rayandy fan,

     很高兴听到你的问题解决了。

     你说的是下面图中黄色快的0X06吗？

关于MCUBootUtility连接的问题，我觉得还是可能和flashloader有关，就如AN12183 中提到的：

所以，可能还是需要修改下对应的flashloader，然后再替换掉MCUbootUtility里面的flashloader.

Have a great day,
Kerry

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[cams]

我是修改了图中黄色部分的0x06，它原来是0x08。

稍后我再试一下MCUBootUtility。

[kerryzhou]

楼主你好！

我看了我们SDK默认就是0X06， 你说的原来是0X08，你的代码是SDK2.7.0吗？

Have a great day,
Kerry

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[cams]

哦，0X08那是我最先开始改的。再说明一下，SDK_2.70_EVK-MIMXRT1060里边的led_blinky例子用的flashloader用在GD25C64C qspi_flash FLASH_SPI_4PAD是不行的，需要根据AN12183中修改flashloader，把led_blink原来的flashloader换掉才可以正常运行。

[kerryzhou]

好的，感谢你的经验分享！

Have a great day,
Kerry

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[kerryzhou]

Hi rayandy fan,

   楼主你好！

   实际上你提到的DIR_BT_DIS=1， 0x460寄存器值为0x00000008,并不会影响功能。

你看到，我这边读出来的数据和你一样，我是官方的MIMRT1060-EVK 板子。

你说的debug没有问题，你有没有检查你led debug的地址，是否是外部flash？

另外，我建议你直接用MCUBootutility自带的app烧录试试，防止你生成的image有问题。

NXP-MCUBootUtility-2.2.0\apps\NXP_MIMXRT1060-EVK_Rev.A1

你可以选择led_blinky_0x6000a000.srec 试试。

如果还有问题，欢迎继续交流！

Have a great day,
Kerry

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