projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 1541d7a6 VM |
1 | How to update U-Boot on pico-imx7d board |
| 2 | ---------------------------------------- | |
| 3 | ||
| 4 | Required software on the host PC: | |
| 5 | ||
| 6 | - imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader | |
| 7 | ||
| 8 | Build U-Boot for pico: | |
| 9 | ||
| 10 | $ make mrproper | |
| 11 | $ make pico-imx7d_defconfig | |
| 12 | $ make | |
| 13 | ||
| 14 | This generates the U-Boot binary called u-boot.imx. | |
| 15 | ||
| 16 | Put pico board in USB download mode (refer to the PICO-iMX7D Quick Start Guide | |
| 17 | page 3) | |
| 18 | ||
| 19 | Connect a USB to serial adapter between the host PC and pico. | |
| 20 | ||
| 21 | Connect a USB cable between the OTG pico port and the host PC. | |
| 22 | ||
| 23 | Open a terminal program such as minicom. | |
| 24 | ||
| 25 | Copy u-boot.imx to the imx_usb_loader folder. | |
| 26 | ||
| 27 | Load u-boot.imx via USB: | |
| 28 | ||
| 29 | $ sudo ./imx_usb u-boot.imx | |
| 30 | ||
| 31 | Then U-Boot starts and its messages appear in the console program. | |
| 32 | ||
| 33 | Use the default environment variables: | |
| 34 | ||
| 35 | => env default -f -a | |
| 36 | => saveenv | |
| 37 | ||
| 38 | Run the UMS command: | |
| 39 | => ums 0 mmc 0 | |
| 40 | ||
| 41 | Transfer u-boot.imx to be flashed into the eMMC: | |
| 42 | ||
| 43 | $ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1; sync | |
| 44 | ||
| 45 | Remove power from the pico board. | |
| 46 | ||
| 47 | Put pico board into normal boot mode. | |
| 48 | ||
| 49 | Power up the board and the new updated U-Boot should boot from eMMC. | |
| 0bfd4f81 VM |
50 | |
| 51 | Building U-Boot to boot with NXP 4.1 kernel: | |
| 52 | ||
| 53 | The NXP 4.1 kernel boots only in secure boot mode on mx7. | |
| 54 | ||
| 55 | Follow the next steps to enable secure boot: | |
| 56 | ||
| 57 | $ make mrproper | |
| 58 | $ make pico-imx7d_defconfig | |
| 59 | $ make menuconfig | |
| 60 | -> ARM architecture | |
| 61 | -> [*] Enable support for booting in non-secure mode | |
| 62 | -> [*] Boot in secure mode by default | |
| 63 | -> Exit | |
| 64 | $ make | |
| 65 | ||
| 66 | Flash u-boot.imx using the imx_usb_loader tool. |