Add support for Microchip SamA7G54 Eval Kit

.github/workflows/build-boot.yml

@@ -24,6 +24,8 @@ jobs:
           - nanopi_r2s_boot
           - rpi2_boot
           - rpi64_boot
+          - sama7g54_ek_emmc_boot
+          - sama7g54_ek_sd_boot
     env:
       MAKEFLAGS: -j5
     steps:

.github/workflows/build-image.yml

@@ -12,6 +12,7 @@ on:
           - raspberrypi-rpi64
           - bananapi-bpi-r3
           - friendlyarm-nanopi-r2s
+          - microchip-sama7g54-ek
         default: 'raspberrypi-rpi64'
 
 jobs:
@@ -71,6 +72,12 @@ jobs:
               echo "ARCH=aarch64" >> $GITHUB_ENV
               echo "BUILD_EMMC=false" >> $GITHUB_ENV
               ;;
+            microchip-sama7g54-ek)
+              echo "BOOTLOADER_SD=sama7g54-ek-sd-boot" >> $GITHUB_ENV
+              echo "BOOTLOADER_EMMC=sama7g54-ek-emmc-boot" >> $GITHUB_ENV
+              echo "ARCH=arm" >> $GITHUB_ENV
+              echo "BUILD_EMMC=true" >> $GITHUB_ENV
+              ;;
             *)
               echo "Error: Unknown board ${{ inputs.board }}"
               exit 1

board/arm/Config.in

@@ -1,5 +1,6 @@
 if BR2_arm
 
+source "$BR2_EXTERNAL_INFIX_PATH/board/arm/microchip-sama7g54-ek/Config.in"
 source "$BR2_EXTERNAL_INFIX_PATH/board/arm/raspberrypi-rpi2/Config.in"
 
 endif

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

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_MICROCHIP_SAMA7G54_EK
+	bool "Microchip SAMA7G54-EK Evaluation Kit"
+	depends on BR2_arm
+	select SDCARD_AUX
+	help
+	  Support for the Microchip SAMA7G54 Evaluation Kit featuring
+	  a Cortex-A7 processor with MACB Gigabit Ethernet and MMC storage.

board/arm/microchip-sama7g54-ek/LICENSE

@@ -0,0 +1,13 @@
+Copyright (c) 2026 The KernelKit Authors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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

@@ -0,0 +1,116 @@
+Microchip SAMA7G54-EK
+=====================
+
+The [SAMA7G54-EK][1] is an evaluation kit for the Microchip SAMA7G5 series,
+featuring an ARM Cortex-A7 processor @ 800 MHz with 512 MB DDR3L RAM.
+
+The board features:
+
+- 2x MACB Gigabit Ethernet ports
+- 8 GB eMMC (SDMMC0) + microSD card slot (SDMMC1)
+- QSPI NOR flash
+- USB 2.0 host ports
+- CAN bus interfaces
+- Flexcom serial ports (UART, SPI, I2C)
+
+How to Build
+------------
+
+Since there are no pre-built images for ARM 32-bit, you need to build
+both Infix and the bootloader from source.
+
+### SD Card
+
+1. Build the bootloader
+
+        make O=x-boot-sama7g54 sama7g54_ek_sd_boot_defconfig
+        make O=x-boot-sama7g54
+
+2. Build Infix
+
+        make O=x-arm arm_defconfig
+        make O=x-arm
+
+3. Create the SD card image
+
+        ./utils/mkimage.sh -b x-boot-sama7g54 -r x-arm microchip-sama7g54-ek
+
+### eMMC
+
+1. Build the bootloader
+
+        make O=x-boot-sama7g54-emmc sama7g54_ek_emmc_boot_defconfig
+        make O=x-boot-sama7g54-emmc
+
+2. Build Infix (same as above, skip if already built)
+
+        make O=x-arm arm_defconfig
+        make O=x-arm
+
+3. Create the eMMC image
+
+        ./utils/mkimage.sh -b x-boot-sama7g54-emmc -r x-arm -t emmc microchip-sama7g54-ek
+
+Flashing to SD Card
+-------------------
+
+[Flash the image][0] to a microSD card (at least 2 GB):
+
+```bash
+sudo dd if=x-boot-sama7g54/images/infix-arm-sdcard.img of=/dev/sdX \
+        bs=1M status=progress oflag=direct
+```
+
+You can also use `bmaptool` for faster writes:
+
+```bash
+sudo bmaptool copy x-boot-sama7g54/images/infix-arm-sdcard.img /dev/sdX
+```
+
+> [!WARNING]
+> Ensure `/dev/sdX` is the correct device for your SD card and not used
+> by the host system!  Use `lsblk` to verify.
+
+Flashing to eMMC
+-----------------
+
+The SAMA7G5EK has an on-board 8 GB eMMC (SDMMC0/mmc0).  Jumper J22
+controls if booting from onboard storage is allowed or not; open means
+allowed.  When open, the SW4 button can also prevent booting from eMMC
+if held at power on.
+
+The easiest method is to flash from a running SD card system:
+
+1. Boot the board from SD card
+2. Transfer the eMMC image to the board (USB drive, network, etc.)
+3. Flash the eMMC:
+
+        sudo bmaptool copy emmc.img /dev/mmcblk0
+
+4. Power off, remove SD card, and boot from eMMC
+
+Booting the Board
+-----------------
+
+1. Insert the flashed SD card (or ensure eMMC is flashed)
+2. Connect an Ethernet cable
+3. Power up the board
+4. Find the assigned IP and SSH in, default login: `admin` / `admin`
+
+Console Port
+------------
+
+The debug console is on Flexcom3 (active by default):
+
+- Baud rate: 115200
+- Data bits: 8
+- Parity: None
+- Stop bits: 1
+
+Connect a USB-to-serial adapter to the board's debug UART header.
+
+> [!WARNING]
+> Use only 3.3V serial adapters.
+
+[0]: https://kernelkit.org/posts/flashing-sdcard/
+[1]: https://www.microchip.com/en-us/development-tool/EV21H18A

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

@@ -0,0 +1 @@
+dtb-y += microchip/at91-sama7g5ek.dtb

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

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Infix OS device tree for Microchip SAMA7G5 Evaluation Kit
+ */
+
+#include <arm/microchip/at91-sama7g5ek.dts>
+#include "infix.dtsi"
+
+/ {
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+};
+
+/* Thermal sensor disabled until OTP is calibrated */
+&thermal_sensor {
+	status = "disabled";
+};

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

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common Infix OS defaults
+ */
+
+/ {
+	chosen {
+		infix {
+			/* Default admin user password: 'admin' */
+			factory-password-hash = "$5$mI/zpOAqZYKLC2WU$i7iPzZiIjOjrBF3NyftS9CCq8dfYwHwrmUK097Jca9A";
+		};
+	};
+};

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

@@ -0,0 +1,85 @@
+# Disk image for Microchip SAMA7G5EK (sama7g5 evaluation kit)
+
+image boot.vfat {
+	vfat {
+		files = {
+			"boot.bin",
+			"u-boot.bin"
+		}
+	}
+
+	size = 16M
+}
+
+image cfg.ext4 {
+	empty = true
+	temporary = true
+	size = 16M
+
+	ext4 {
+		label = "cfg"
+                use-mke2fs = true
+                features = "uninit_bg"
+                extraargs = "-m 0 -i 4096"
+	}
+}
+
+# The /var partition will be expanded automatically at first boot
+# to use the full size of the SD-card or eMMC media.
+image var.ext4 {
+	empty = true
+	temporary = true
+	size = 128M
+
+	ext4 {
+		label = "var"
+                use-mke2fs = true
+                features = "uninit_bg"
+                extraargs = "-m 0 -i 4096"
+	}
+}
+
+image #INFIX_ID##VERSION#-sama7g54-ek-#TARGET#.img {
+	hdimage {
+		partition-table-type = "hybrid"
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+		offset = 1M
+	}
+
+	partition aux {
+		partition-uuid = D4EF35A0-0652-45A1-B3DE-D63339C82035
+		image = "aux.ext4"
+	}
+
+	partition primary {
+		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
+		bootable = true
+		size = 250M
+		image = "rootfs.squashfs"
+	}
+
+	partition secondary {
+		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
+		bootable = true
+		size = 250M
+		image = "rootfs.squashfs"
+	}
+
+	partition cfg {
+		partition-uuid = 7aa497f0-73b5-47e5-b2ab-8752d8a48105
+		image = "cfg.ext4"
+	}
+
+	partition var {
+		partition-uuid = 8046A06A-E45A-4A14-A6AD-6684704A393F
+		image = "var.ext4"
+	}
+}
+
+# Silence genimage warnings
+config {}

board/arm/microchip-sama7g54-ek/microchip-sama7g54-ek.mk

@@ -0,0 +1,69 @@
+# Microchip SAMA7G54-EK kernel configuration fixups
+define MICROCHIP_SAMA7G54_EK_LINUX_CONFIG_FIXUPS
+	# AT91/Microchip SoC
+	$(call KCONFIG_ENABLE_OPT,CONFIG_ARCH_AT91)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SOC_SAMA7G5)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_ATMEL_CLOCKSOURCE_TCB)
+
+	# Serial console (FLEXCOM)
+	# Use ttyAT naming to avoid major/minor conflict with the
+	# 8250 driver (needed by Raspberry Pi 2 in the shared ARM config)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SERIAL_ATMEL)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SERIAL_ATMEL_CONSOLE)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SERIAL_ATMEL_TTYAT)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MFD_ATMEL_FLEXCOM)
+
+	# Network: MACB Ethernet
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET_VENDOR_MICROCHIP)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MACB)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MICREL_PHY)
+
+	# MMC/SD
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MMC_SDHCI)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MMC_SDHCI_PLTFM)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MMC_SDHCI_OF_AT91)
+
+	# Pin control and GPIO
+	$(call KCONFIG_ENABLE_OPT,CONFIG_PINCTRL_AT91)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_PINCTRL_AT91PIO4)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_GPIO_SYSFS)
+
+	# I2C and SPI
+	$(call KCONFIG_ENABLE_OPT,CONFIG_I2C_AT91)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SPI_ATMEL)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SPI_ATMEL_QUADSPI)
+
+	# Power management and reset
+	$(call KCONFIG_ENABLE_OPT,CONFIG_POWER_RESET)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_POWER_RESET_AT91_RESET)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_POWER_RESET_AT91_SAMA5D2_SHDWC)
+
+	# Watchdog
+	$(call KCONFIG_ENABLE_OPT,CONFIG_WATCHDOG)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_SAMA5D4_WATCHDOG)
+
+	# DMA and RTC
+	$(call KCONFIG_ENABLE_OPT,CONFIG_AT_XDMAC)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_RTC_CLASS)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_RTC_DRV_AT91SAM9)
+
+	# Crypto hardware acceleration
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CRYPTO_DEV_ATMEL_AES)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CRYPTO_DEV_ATMEL_TDES)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CRYPTO_DEV_ATMEL_SHA)
+
+	# USB Host
+	$(call KCONFIG_ENABLE_OPT,CONFIG_USB_EHCI_HCD)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_USB_OHCI_HCD)
+
+	# Regulators
+	$(call KCONFIG_ENABLE_OPT,CONFIG_REGULATOR)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_REGULATOR_FIXED_VOLTAGE)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_REGULATOR_MCP16502)
+
+	# NVMEM for OTP
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NVMEM_MICROCHIP_OTPC)
+endef
+
+$(eval $(ix-board))
+$(eval $(generic-package))

board/arm/microchip-sama7g54-ek/rootfs/etc/rauc/system.conf

@@ -0,0 +1,12 @@
+[system]
+compatible=infix-sama7g54-ek
+bootloader=uboot
+statusfile=/mnt/aux/rauc.status
+
+[slot.rootfs.0]
+device=/dev/disk/by-partlabel/primary
+bootname=primary
+
+[slot.rootfs.1]
+device=/dev/disk/by-partlabel/secondary
+bootname=secondary

board/arm/microchip-sama7g54-ek/rootfs/usr/share/product/microchip,sama7g5ek/etc/product/interface-quirks.json

@@ -0,0 +1,5 @@
+{
+    "@ethtool:driver=macb": {
+        "broken-flow-control": true
+    }
+}

board/arm/microchip-sama7g54-ek/uboot/emmc-extras.config

@@ -0,0 +1 @@
+CONFIG_DEVICE_TREE_INCLUDES="infix-env.dtsi infix-key.dtsi sama7g54-ek-env-emmc.dtsi"