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Merge pull request #1397 from kernelkit/sama7g54
Add support for Microchip SamA7G54 Eval Kit Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2 parents b691868 + 055c8dd commit f708f9b

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‎.github/workflows/build-boot.yml‎

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- nanopi_r2s_boot
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- rpi2_boot
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- rpi64_boot
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- sama7g54_ek_emmc_boot
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- sama7g54_ek_sd_boot
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env:
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MAKEFLAGS: -j5
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steps:

‎.github/workflows/build-image.yml‎

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- raspberrypi-rpi64
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- bananapi-bpi-r3
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- friendlyarm-nanopi-r2s
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- microchip-sama7g54-ek
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default: 'raspberrypi-rpi64'
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jobs:
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echo "ARCH=aarch64" >> $GITHUB_ENV
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echo "BUILD_EMMC=false" >> $GITHUB_ENV
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;;
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microchip-sama7g54-ek)
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echo "BOOTLOADER_SD=sama7g54-ek-sd-boot" >> $GITHUB_ENV
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echo "BOOTLOADER_EMMC=sama7g54-ek-emmc-boot" >> $GITHUB_ENV
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echo "ARCH=arm" >> $GITHUB_ENV
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echo "BUILD_EMMC=true" >> $GITHUB_ENV
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;;
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*)
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echo "Error: Unknown board ${{ inputs.board }}"
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exit 1

‎board/arm/Config.in‎

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if BR2_arm
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source "$BR2_EXTERNAL_INFIX_PATH/board/arm/microchip-sama7g54-ek/Config.in"
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source "$BR2_EXTERNAL_INFIX_PATH/board/arm/raspberrypi-rpi2/Config.in"
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endif

‎board/arm/microchip-sama7g54-ek/Config.in‎

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config BR2_PACKAGE_MICROCHIP_SAMA7G54_EK
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bool "Microchip SAMA7G54-EK Evaluation Kit"
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depends on BR2_arm
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select SDCARD_AUX
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help
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Support for the Microchip SAMA7G54 Evaluation Kit featuring
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a Cortex-A7 processor with MACB Gigabit Ethernet and MMC storage.

‎board/arm/microchip-sama7g54-ek/LICENSE‎

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Copyright (c) 2026 The KernelKit Authors
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

‎board/arm/microchip-sama7g54-ek/README.md‎

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Microchip SAMA7G54-EK
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=====================
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The [SAMA7G54-EK][1] is an evaluation kit for the Microchip SAMA7G5 series,
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featuring an ARM Cortex-A7 processor @ 800 MHz with 512 MB DDR3L RAM.
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The board features:
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- 2x MACB Gigabit Ethernet ports
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- 8 GB eMMC (SDMMC0) + microSD card slot (SDMMC1)
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- QSPI NOR flash
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- USB 2.0 host ports
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- CAN bus interfaces
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- Flexcom serial ports (UART, SPI, I2C)
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How to Build
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------------
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Since there are no pre-built images for ARM 32-bit, you need to build
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both Infix and the bootloader from source.
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### SD Card
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1. Build the bootloader
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make O=x-boot-sama7g54 sama7g54_ek_sd_boot_defconfig
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make O=x-boot-sama7g54
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2. Build Infix
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make O=x-arm arm_defconfig
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make O=x-arm
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3. Create the SD card image
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./utils/mkimage.sh -b x-boot-sama7g54 -r x-arm microchip-sama7g54-ek
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### eMMC
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1. Build the bootloader
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make O=x-boot-sama7g54-emmc sama7g54_ek_emmc_boot_defconfig
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make O=x-boot-sama7g54-emmc
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2. Build Infix (same as above, skip if already built)
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make O=x-arm arm_defconfig
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make O=x-arm
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3. Create the eMMC image
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./utils/mkimage.sh -b x-boot-sama7g54-emmc -r x-arm -t emmc microchip-sama7g54-ek
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Flashing to SD Card
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-------------------
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[Flash the image][0] to a microSD card (at least 2 GB):
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```bash
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sudo dd if=x-boot-sama7g54/images/infix-arm-sdcard.img of=/dev/sdX \
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bs=1M status=progress oflag=direct
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```
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You can also use `bmaptool` for faster writes:
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```bash
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sudo bmaptool copy x-boot-sama7g54/images/infix-arm-sdcard.img /dev/sdX
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```
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> [!WARNING]
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> Ensure `/dev/sdX` is the correct device for your SD card and not used
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> by the host system! Use `lsblk` to verify.
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Flashing to eMMC
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-----------------
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The SAMA7G5EK has an on-board 8 GB eMMC (SDMMC0/mmc0). Jumper J22
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controls if booting from onboard storage is allowed or not; open means
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allowed. When open, the SW4 button can also prevent booting from eMMC
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if held at power on.
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The easiest method is to flash from a running SD card system:
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1. Boot the board from SD card
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2. Transfer the eMMC image to the board (USB drive, network, etc.)
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3. Flash the eMMC:
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sudo bmaptool copy emmc.img /dev/mmcblk0
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4. Power off, remove SD card, and boot from eMMC
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Booting the Board
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-----------------
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1. Insert the flashed SD card (or ensure eMMC is flashed)
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2. Connect an Ethernet cable
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3. Power up the board
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4. Find the assigned IP and SSH in, default login: `admin` / `admin`
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Console Port
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------------
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The debug console is on Flexcom3 (active by default):
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- Baud rate: 115200
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- Data bits: 8
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- Parity: None
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- Stop bits: 1
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Connect a USB-to-serial adapter to the board's debug UART header.
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> [!WARNING]
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> Use only 3.3V serial adapters.
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[0]: https://kernelkit.org/posts/flashing-sdcard/
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[1]: https://www.microchip.com/en-us/development-tool/EV21H18A

‎board/arm/microchip-sama7g54-ek/dts/Makefile‎

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dtb-y += microchip/at91-sama7g5ek.dtb

‎board/arm/microchip-sama7g54-ek/dts/microchip/at91-sama7g5ek.dts‎

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// SPDX-License-Identifier: GPL-2.0
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/*
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* Infix OS device tree for Microchip SAMA7G5 Evaluation Kit
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*/
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#include <arm/microchip/at91-sama7g5ek.dts>
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#include "infix.dtsi"
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/ {
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chosen {
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stdout-path = "serial0:115200n8";
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};
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};
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/* Thermal sensor disabled until OTP is calibrated */
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&thermal_sensor {
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status = "disabled";
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};

‎board/arm/microchip-sama7g54-ek/dts/microchip/infix.dtsi‎

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// SPDX-License-Identifier: GPL-2.0
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/*
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* Common Infix OS defaults
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*/
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/ {
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chosen {
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infix {
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/* Default admin user password: 'admin' */
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factory-password-hash = "$5$mI/zpOAqZYKLC2WU$i7iPzZiIjOjrBF3NyftS9CCq8dfYwHwrmUK097Jca9A";
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};
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};
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};

‎board/arm/microchip-sama7g54-ek/genimage.cfg.in‎

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# Disk image for Microchip SAMA7G5EK (sama7g5 evaluation kit)
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image boot.vfat {
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vfat {
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files = {
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"boot.bin",
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"u-boot.bin"
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}
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}
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size = 16M
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}
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image cfg.ext4 {
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empty = true
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temporary = true
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size = 16M
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ext4 {
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label = "cfg"
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use-mke2fs = true
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features = "uninit_bg"
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extraargs = "-m 0 -i 4096"
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}
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}
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# The /var partition will be expanded automatically at first boot
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# to use the full size of the SD-card or eMMC media.
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image var.ext4 {
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empty = true
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temporary = true
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size = 128M
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ext4 {
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label = "var"
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use-mke2fs = true
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features = "uninit_bg"
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extraargs = "-m 0 -i 4096"
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}
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}
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image #INFIX_ID##VERSION#-sama7g54-ek-#TARGET#.img {
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hdimage {
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partition-table-type = "hybrid"
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}
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partition boot {
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partition-type = 0xC
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bootable = "true"
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image = "boot.vfat"
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offset = 1M
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}
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partition aux {
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partition-uuid = D4EF35A0-0652-45A1-B3DE-D63339C82035
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image = "aux.ext4"
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}
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partition primary {
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partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
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bootable = true
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size = 250M
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image = "rootfs.squashfs"
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}
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partition secondary {
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partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
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bootable = true
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size = 250M
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image = "rootfs.squashfs"
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}
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partition cfg {
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partition-uuid = 7aa497f0-73b5-47e5-b2ab-8752d8a48105
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image = "cfg.ext4"
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}
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partition var {
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partition-uuid = 8046A06A-E45A-4A14-A6AD-6684704A393F
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image = "var.ext4"
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}
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}
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# Silence genimage warnings
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config {}

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