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QuangNguyenMinh123
44 lines
2.0 KiB
Markdown
44 lines
2.0 KiB
Markdown
# Rpi4
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This example is for testing OpenOCD capablility of debugging Linux kernel and kerel module.<br>
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# Prerequisite
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+ Hardware debugger: JLink, Olimex, .... any hardware debugger supported by OpenOCD. In this case, Jlink has been used.
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+ Rasberry Pi 4, micros SD card, micros SD card reader
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+ OpenOCD installed on your system. You can run `install_openocd.sh` to automatically install it.
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+ Docker installed on your system. You can run `install_docker.sh` to automatically install it.
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# Build Rpi4 image
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+ `make build_docker` to build docker
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+ `make docker` to enter docker container
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+ `make owrt` to build owrt image. Final image will be: openwrt-bcm27xx-bcm2711-rpi-4-squashfs-factory.img
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+ `make yocto` to build yocto image. Final image will be: temp.wic
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# Flash image to your microSD card
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Please read this carefully before deployment
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+ Run following command in other terminal (not in docker)
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+ Identify microSD card partition: `lsblk`, assume microSD card partition is: /dev/sdX
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+ Unmount any partition from microSD `umount /dev/sdX`
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+ Flash Rpi4 image, modify path to Rpi4 image and microSD card partition sdX:
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```
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sudo dd if=openwrt-bcm27xx-bcm2711-rpi-4-squashfs-factory.img of=/dev/sdX bs=4M status=progress
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```
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or
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```
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sudo dd if=temp.wic of=/dev/sdX bs=4M status=progress
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```
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+ Sync and eject
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```
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sync
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sudo eject /dev/sdX
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```
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# Hardware connection
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Check Rpi4 pin out here (Alt4): https://pinout.xyz/pinout/jtag<br>
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| Pin name | Jtag connector | Rpi4 |
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|---------------|-------------------|-------------------|
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| VCC | 2 | 3v3 power |
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| TRST | 3 | GPIO 22 |
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| TDI | 5 | GPIO 26 |
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| TMS | 7 | GPIO 27 |
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| TCLK | 9 | GPIO 25 |
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| RTCK | 11 | GPIO 23 |
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| TDO | 13 | GPIO 24 |
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| GND | 18 | Any Ground |
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