귀찮으면 fsl-image-validation-imx-imx8mmevk.sdcard 를 sd에 구워서 켜보면 될 듯.
imx_m4_demos에는 bin 파일이 있는데 이건 어떻게 올려서 쓰려나?
MCUXpresso 안쓰면 uboot에서 해당 파일을 직접 sd에 넣어 실행하는 수 밖에 없나?
4.2 Run applications using U-Boot
This section describes how to run applications using an SD card and pre-built U-Boot image for i.MX processor.
Following the steps from section 2—Embedded Linux of this Getting Started guide, prepare an SD card with a pre-built U-Boot + Linux image from the Linux BSP package for the i.MX 8M Plus processor. If you have already loaded the SD card with a Linux image, you can skip this step.
Insert the SD card in the host computer (Linux or Windows) and copy the application image (for examplehello_world.bin) to the FAT partition of the SD card.
Safely remove the SD card from the PC.
Insert the SD card to the target board. Make sure to use the default boot SD slot and double check theBoot switch setup.
Connect the DEBUG UART connector on the board to the PC through USB cable. The Windows OS installs the USB driver automatically, and the Ubuntu OS will find the serial devices as well. See Connect USB debug cable section in Out of box for more instructions on serial communication applications.
Open a second terminal on the i.MX8M Plus EVK board’s second enumerated serial port. This is the Cortex®-M7’s serial console. Set the speed to 115200 bit/s, data bits 8, 1 stop bit (115200, 8N1), no parity.
Power up the board and stop the boot process by pressing any key before the U-Boot countdown reaches zero. At the U-Boot prompt on the first terminal, type the following commands. => fatload mmc 0:1 0x48000000 hello_world.bin => cp.b 0x48000000 0x7e0000 0x20000 => bootaux 0x7e0000 These commands copy the image file from the first partition of the SD card into the Cortex®-M7’s TCM and releases the Cortex®-M7 from reset.
Err:3 http://deb.odroid.in/c2 bionic InRelease The following signatures were invalid: EXPKEYSIG 5360FB9DAB19BAC9 Mauro Ribeiro (mdrjr) <mauro.ribeiro@hardkernel.com>
Reading package lists... Done W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb.odroid.in/c2 bionic InRelease: The following signatures were invalid: EXPKEYSIG 5360FB9DAB19BAC9 Mauro Ribeiro (mdrjr) <mauro.ribeiro@hardkernel.com> W: Failed to fetch http://deb.odroid.in/c2/dists/bionic/InRelease The following signatures were invalid: EXPKEYSIG 5360FB9DAB19BAC9 Mauro Ribeiro (mdrjr) <mauro.ribeiro@hardkernel.com> W: Some index files failed to download. They have been ignored, or old ones used instead.
$ modinfo g_mass_storage filename: /lib/modules/5.10.60-v7+/kernel/drivers/usb/gadget/legacy/g_mass_storage.ko license: GPL author: Michal Nazarewicz description: Mass Storage Gadget srcversion: B6D70CE605D2CF6CF116805 depends: usb_f_mass_storage,libcomposite intree: Y name: g_mass_storage vermagic: 5.10.60-v7+ SMP mod_unload modversions ARMv7 p2v8 parm: idVendor:USB Vendor ID (ushort) parm: idProduct:USB Product ID (ushort) parm: bcdDevice:USB Device version (BCD) (ushort) parm: iSerialNumber:SerialNumber string (charp) parm: iManufacturer:USB Manufacturer string (charp) parm: iProduct:USB Product string (charp) parm: file:names of backing files or devices (array of charp) parm: ro:true to force read-only (array of bool) parm: removable:true to simulate removable media (array of bool) parm: cdrom:true to simulate CD-ROM instead of disk (array of bool) parm: nofua:true to ignore SCSI WRITE(10,12) FUA bit (array of bool) parm: luns:number of LUNs (uint) parm: stall:false to prevent bulk stalls (bool)
