rauc demo: add

Add an example of implementing rauc on a rockchip board. Adding the meta-rauc layer, adding 'rauc' to DISTRO_FEATURES, and enabling RK_RAUC_DEMO will build an image using the example provided in dynamic-layers/rk-rauc-demo. This example uses a simple A/B + D scheme (i.e. two root partitions and a non-updated /data partition). Repartitioning occurs automatically on first boot thanks to systemd's 'repart' mechanism. NOTE: - this example only works with systemd If you wish to provide your own implementation, simply add the meta-rauc layer, add 'rauc' to DISTRO_FEATURES, don't enable RK_RAUC_DEMO, and provide your own implementation in a separate layer. Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de> Signed-off-by: Trevor Woerner <twoerner@gmail.com>
2025-07-04 20:54:48 +02:00 · 2024-05-13 22:18:44 -04:00 · 2024-05-13 22:18:44 -04:00 · ea72b22f53
commit ea72b22f53
parent b2470c0334
22 changed files with 406 additions and 0 deletions
--- a/18
+++ b/18
@ -85,6 +85,24 @@ Notes:

 	in the configuration (e.g. conf/local.conf).

+  A/B updates with RAUC
+	This layer now contains one example of building an A/B update using RAUC.
+	Users are free to use/test this example, to optionally enable it, to build
+	their own update strategies based on this one, or to ignore it completely.
+	This example only works with
+
+		INIT_MANAGER = "systemd"
+
+	If you wish to use this example in your builds:
+	- enable 'systemd' as your init system
+	- add the meta-rauc layer to your build (with the corresponding branch)
+	- add 'rauc' to your DISTRO_FEATURES
+	- enable RK_RAUC_DEMO in your config
+
+	If you wish to implement your own RAUC update without using the example from
+	this layer, perform the same steps as above except for the step enabling
+	RK_RAUC_DEMO.
+
 U-Boot Environment:
 ------------------
 	In order to configure U-Boot to be able to store its environment into the
--- a/classes-recipe/rk-rauc-demo-features-check.bbclass
+++ b/classes-recipe/rk-rauc-demo-features-check.bbclass
@ -0,0 +1,4 @@
+inherit features_check
+
+REQUIRED_DISTRO_FEATURES:append:rk-rauc-demo = " systemd rauc"
+REQUIRED_MACHINE_FEATURES:append:rk-rauc-demo = " rk-u-boot-env"
--- a/conf/layer.conf
+++ b/conf/layer.conf
@ -21,3 +21,7 @@ BBFILES_DYNAMIC += " \
    qt5-layer:${LAYERDIR}/dynamic-layers/qt5-layer/*/*/*.bb \
    qt5-layer:${LAYERDIR}/dynamic-layers/qt5-layer/*/*/*.bbappend \
 "
+BBFILES_DYNAMIC += " \
+    rauc:${LAYERDIR}/dynamic-layers/rk-rauc-demo/*/*/*.bb \
+    rauc:${LAYERDIR}/dynamic-layers/rk-rauc-demo/*/*/*.bbappend \
+"
--- a/conf/machine/include/rockchip-rauc.inc
+++ b/conf/machine/include/rockchip-rauc.inc
@ -0,0 +1,4 @@
+# 'RK_RAUC_DEMO' indicates the user wants to use the
+# rauc demo configuration from this layer
+OVERRIDES .= "${@ ':rk-rauc-demo' if bb.utils.to_boolean(d.getVar('RK_RAUC_DEMO'), False) else ''}"
+IMAGE_INSTALL:append:rk-rauc-demo = " abd-partition"
--- a/conf/machine/include/rockchip-wic.inc
+++ b/conf/machine/include/rockchip-wic.inc
@ -2,6 +2,7 @@

 require conf/machine/include/rockchip-extlinux.inc
 require conf/machine/include/rockchip-rk-u-boot-env.inc
+require conf/machine/include/rockchip-rauc.inc

 SPL_BINARY ?= "idbloader.img"

@ -9,6 +10,7 @@ SPL_BINARY ?= "idbloader.img"
 # WIC_COMPRESSION_EXTENSION = ".xz"
 WIC_COMPRESSION_EXTENSION ?= ""
 IMAGE_FSTYPES += "wic${WIC_COMPRESSION_EXTENSION} wic.bmap"
+IMAGE_FSTYPES:append:rk-rauc-demo = " ext4"
 WKS_FILE ?= "rockchip.wks"
 WKS_FILE_DEPENDS ?= " \
 	e2fsprogs-native \
--- a/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/files/boot.cmd.in
+++ b/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/files/boot.cmd.in
@ -0,0 +1,51 @@
+echo "devtype: ${devtype}"
+echo "devnum: ${devnum}"
+echo "distro_bootpart: ${distro_bootpart}"
+
+test -n "${BOOT_ORDER}" || env set BOOT_ORDER "A B"
+test -n "${BOOT_A_LEFT}" || env set BOOT_A_LEFT 3
+test -n "${BOOT_B_LEFT}" || env set BOOT_B_LEFT 3
+test -n "${RAUC_BOOTDEV}" || env set RAUC_BOOTDEV "${devtype} ${devnum}:${distro_bootpart}"
+
+env set RAUC_BOOTPART
+env set RAUC_SLOT
+
+echo "BOOT_ORDER: ${BOOT_ORDER}"
+for RAUC_BOOTSLOT in "${BOOT_ORDER}"; do
+  if test "x${RAUC_BOOTPART}" != "x"; then
+    # skip remaining slots
+  elif test "x${RAUC_BOOTSLOT}" = "xA"; then
+    if test ${BOOT_A_LEFT} -gt 0; then
+      echo "using RAUC slot A"
+      setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
+      env set RAUC_BOOTPART "PARTLABEL=rootfsA"
+      env set RAUC_SLOT "A"
+      env set RAUC_BOOTDEV "${devtype} ${devnum}:${distro_bootpart}"
+      echo "RAUC_BOOTDEV: ${RAUC_BOOTDEV}"
+    fi
+  elif test "x${RAUC_BOOTSLOT}" = "xB"; then
+    if test ${BOOT_B_LEFT} -gt 0; then
+      echo "using RAUC slot B"
+      setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
+      env set RAUC_BOOTPART "PARTLABEL=rootfsB"
+      env set RAUC_SLOT "B"
+      setexpr BOOTPART1 ${distro_bootpart} + 1
+      env set RAUC_BOOTDEV "${devtype} ${devnum}:${BOOTPART1}"
+      echo "RAUC_BOOTDEV: ${RAUC_BOOTDEV}"
+    fi
+  fi
+done
+
+if test -n "${RAUC_BOOTPART}"; then
+  env set bootargs "${bootargsbase} root=${RAUC_BOOTPART} rauc.slot=${RAUC_SLOT}"
+  env save
+else
+  echo "No valid RAUC slot found. Resetting tries to 3"
+  env set BOOT_A_LEFT 3
+  env set BOOT_B_LEFT 3
+  env save
+  reset
+fi
+
+ext4load ${RAUC_BOOTDEV} ${kernel_addr_r} @@KERNEL_BOOTFILE@@
+bootm ${kernel_addr_r}
--- a/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/files/uboot-rauc.cfg
+++ b/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/files/uboot-rauc.cfg
@ -0,0 +1,8 @@
+CONFIG_CMD_BOOTDEV=y
+CONFIG_CMD_BOOTMETH=y
+CONFIG_CMD_SETEXPR=y
+CONFIG_CMD_SETEXPR_FMT=y
+CONFIG_BOOTSTD_DEFAULTS=n
+CONFIG_BOOTMETH_EXTLINUX=n
+CONFIG_BOOTMETH_EXTLINUX_PXE=n
+CONFIG_BOOTMETH_VBE=n
--- a/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/u-boot_%.bbappend
+++ b/dynamic-layers/rk-rauc-demo/recipes-bsp/u-boot/u-boot_%.bbappend
@ -0,0 +1,26 @@
+inherit rk-rauc-demo-features-check
+
+FILESEXTRAPATHS:prepend:rk-rauc-demo := "${THISDIR}/files:"
+
+DEPENDS:append:rk-rauc-demo = " u-boot-mkimage-native"
+SRC_URI:append:rk-rauc-demo = " \
+	file://uboot-rauc.cfg \
+	file://boot.cmd.in \
+	"
+
+do_compile:append:rk-rauc-demo() {
+	# create boot script
+	sed -e 's|@@KERNEL_BOOTFILE@@|${UBOOT_EXTLINUX_KERNEL_IMAGE}|' \
+	    "${UNPACKDIR}/boot.cmd.in" > "${UNPACKDIR}/boot.cmd"
+	mkimage -A ${UBOOT_ARCH} -T script -C none -n "Boot script" -d "${UNPACKDIR}/boot.cmd" ${UNPACKDIR}/boot.scr
+
+	# tweak environment
+	echo "bootmeths=script extlinux" >> ${B}/u-boot-initial-env
+	echo "bootargsbase=${UBOOT_EXTLINUX_KERNEL_ARGS} ${UBOOT_EXTLINUX_CONSOLE}" >> ${B}/u-boot-initial-env
+}
+
+do_install:append:rk-rauc-demo() {
+	install -d ${D}/boot
+	install -m 0644 ${UNPACKDIR}/boot.scr ${D}/boot
+}
+FILES:${PN}-extlinux += "/boot/boot.scr"
--- a/dynamic-layers/rk-rauc-demo/recipes-core/base-files/base-files_%.bbappend
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/base-files/base-files_%.bbappend
@ -0,0 +1,2 @@
+inherit rk-rauc-demo-features-check
+FILESEXTRAPATHS:prepend:rk-rauc-demo := "${THISDIR}/files:"
--- a/dynamic-layers/rk-rauc-demo/recipes-core/base-files/files/fstab
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/base-files/files/fstab
@ -0,0 +1,5 @@
+/dev/root            /                    auto       x-systemd.growfs                   1  1
+proc                 /proc                proc       defaults                           0  0
+devpts               /dev/pts             devpts     mode=0620,ptmxmode=0666,gid=5      0  0
+tmpfs                /run                 tmpfs      mode=0755,nodev,nosuid,strictatime 0  0
+tmpfs                /var/volatile        tmpfs      defaults                           0  0
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/files/development-1.cert.pem
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/files/development-1.cert.pem
@ -0,0 +1,80 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 2 (0x2)
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: O=Test Org, CN=Test Org rauc CA Development
+        Validity
+            Not Before: Jan  1 00:00:00 1970 GMT
+            Not After : Dec 31 23:59:59 9999 GMT
+        Subject: O=Test Org, CN=Test Org Development-1
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (2048 bit)
+                Modulus:
+                    00:ac:2b:0f:05:02:d0:bb:b0:47:05:36:71:3c:20:
+                    0e:a7:76:8d:75:c1:23:5e:6c:7a:2d:94:ff:3c:17:
+                    d8:0b:44:48:2a:82:03:92:c5:fd:33:76:0c:42:cf:
+                    4d:8a:c9:47:7f:af:52:7c:15:6c:3b:e7:60:d1:04:
+                    97:24:7b:07:1f:56:7d:6c:3f:31:e8:f9:36:7b:33:
+                    5b:cf:54:ea:37:98:a6:b1:9a:1d:da:96:a1:07:14:
+                    9c:15:80:4d:db:0c:03:86:ce:c7:3d:72:57:a2:da:
+                    a0:c0:8c:b2:9a:a0:6a:e5:b8:5f:52:d2:f6:27:ca:
+                    48:f4:e3:86:eb:be:24:93:6a:af:60:68:7f:09:3b:
+                    81:96:ce:85:0c:63:93:d8:fa:91:dc:50:2e:77:bb:
+                    bc:38:42:e9:86:d8:ac:33:dd:e6:d4:37:69:e3:01:
+                    8d:21:8f:a9:4a:7f:15:a5:aa:a9:be:fc:36:93:a4:
+                    10:0c:18:33:30:06:7f:1c:13:b3:a9:c6:57:d7:6b:
+                    96:45:15:e7:f5:8f:3d:48:e0:08:46:4f:7f:ef:14:
+                    77:95:25:25:9b:14:21:84:25:eb:37:0b:01:48:e6:
+                    f5:c1:8b:61:c6:cb:8c:6b:a7:d8:d2:f9:31:e3:80:
+                    3f:78:ea:6a:41:6c:5d:4d:83:a6:54:0d:5b:c2:0e:
+                    f6:ef
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier:
+                89:4C:FE:8A:60:4D:C9:6D:F7:A8:C0:04:49:7F:AA:05:92:29:17:FB
+            X509v3 Authority Key Identifier:
+                keyid:44:0C:AF:4A:74:B4:C7:65:02:B2:95:F1:91:7C:A3:CC:E6:3E:99:E8
+                DirName:/O=Test Org/CN=Test Org rauc CA Development
+                serial:01
+
+            X509v3 Basic Constraints:
+                CA:FALSE
+    Signature Algorithm: sha256WithRSAEncryption
+         2c:d2:30:68:f5:84:52:1e:cf:ed:0d:fc:e7:02:69:0b:3b:f6:
+         c3:77:00:12:1d:2d:d0:8f:49:9e:5c:f1:00:7b:1d:4f:d5:a9:
+         46:a5:df:54:90:50:b4:8f:8e:ba:4b:2d:82:74:eb:5b:a8:f5:
+         45:7b:77:73:b1:9b:32:93:15:c0:5c:02:2a:ed:b0:1e:bb:d8:
+         4e:41:17:20:af:04:46:21:20:7b:86:9f:32:ab:54:71:26:e8:
+         0b:75:12:9c:63:53:4f:54:db:a7:f9:b2:fa:e9:ee:4a:9d:80:
+         ba:ae:3f:eb:ef:10:11:2d:4f:5a:34:fb:8b:45:10:63:0b:f8:
+         af:f3:8b:24:21:2a:e0:0b:44:38:44:b5:9d:6e:8a:ff:1f:bf:
+         6e:44:21:22:ec:8a:8d:73:63:e5:df:1a:ec:2a:64:1f:97:f9:
+         5c:3a:25:7f:03:80:4c:db:99:5e:f9:7d:2b:f1:d0:97:4d:95:
+         6f:29:47:7b:3f:29:e3:96:25:b0:1c:f1:0b:8b:8b:ba:de:3b:
+         3f:40:2e:bd:31:68:ea:a9:8f:dc:c9:09:22:df:76:69:08:5d:
+         5d:a4:09:62:80:20:83:9e:bd:d4:a6:35:ee:97:50:66:39:62:
+         66:1b:2e:75:f2:6d:e7:06:ae:67:5f:4b:63:5c:52:e7:5d:dd:
+         c9:0c:86:2b
+-----BEGIN CERTIFICATE-----
+MIIDfTCCAmWgAwIBAgIBAjANBgkqhkiG9w0BAQsFADA6MREwDwYDVQQKDAhUZXN0
+IE9yZzElMCMGA1UEAwwcVGVzdCBPcmcgcmF1YyBDQSBEZXZlbG9wbWVudDAgFw03
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+nr3UpjXul1BmOWJmGy518m3nBq5nX0tjXFLnXd3JDIYr
+-----END CERTIFICATE-----
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/files/development-1.key.pem
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/files/development-1.key.pem
@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCsKw8FAtC7sEcF
+NnE8IA6ndo11wSNebHotlP88F9gLREgqggOSxf0zdgxCz02KyUd/r1J8FWw752DR
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+DVvCDvbvAgMBAAECggEASphBYq9sltVyf/ytpRpSnxYLhmiPFXs0mIlE6Nl/3qnQ
+BrLcL3yfDuvntg6xjx9UXistNtvlUDMYzJcLkV/InzhPEVZ0HnfTth9zeOpWrI30
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+/6Y0ndFP9hFo1SfnH+ybmR+18ksLDKisV+xWavSCwI7Zk5l/a4C/tT0fqyeu6JyQ
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+eCBpViT7fv2iv/0L+mzjWtLA
+-----END PRIVATE KEY-----
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/rockchip-rauc-bundle.bb
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc-bundles/rockchip-rauc-bundle.bb
@ -0,0 +1,14 @@
+DESCRIPTION = "Rockchip RAUC bundle generator"
+
+inherit bundle
+
+RAUC_BUNDLE_COMPATIBLE = "${MACHINE}"
+RAUC_BUNDLE_VERSION = "v20240512"
+RAUC_BUNDLE_DESCRIPTION = "RAUC Demo Bundle"
+RAUC_BUNDLE_FORMAT = "verity"
+RAUC_BUNDLE_SLOTS = "rootfs"
+RAUC_SLOT_rootfs = "core-image-base"
+RAUC_SLOT_rootfs[fstype] = "ext4"
+
+RAUC_KEY_FILE := "${THISDIR}/files/development-1.key.pem"
+RAUC_CERT_FILE := "${THISDIR}/files/development-1.cert.pem"
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc/files/ca.cert.pem
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc/files/ca.cert.pem
@ -0,0 +1,80 @@
+Certificate:
+    Data:
+        Version: 3 (0x2)
+        Serial Number: 1 (0x1)
+        Signature Algorithm: sha256WithRSAEncryption
+        Issuer: O=Test Org, CN=Test Org rauc CA Development
+        Validity
+            Not Before: Jan  1 00:00:00 1970 GMT
+            Not After : Dec 31 23:59:59 9999 GMT
+        Subject: O=Test Org, CN=Test Org rauc CA Development
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (2048 bit)
+                Modulus:
+                    00:c0:fe:7b:6c:c3:e3:47:cc:d4:15:e1:0c:b2:1c:
+                    c9:f7:61:3e:42:d7:f1:a4:30:f2:db:0e:49:95:49:
+                    70:ee:97:6d:fe:48:5d:b9:22:63:47:e0:be:63:d7:
+                    68:9b:38:04:7d:7f:d9:65:ef:1d:6c:26:cb:05:7f:
+                    59:45:15:9d:76:59:c4:8d:59:a0:38:a0:25:fa:86:
+                    1b:f4:85:ff:cf:7c:c7:57:a3:7e:56:71:7d:69:c3:
+                    69:a7:fb:e6:8e:bc:f9:49:e2:f5:9a:97:e5:2d:75:
+                    ef:f9:76:29:5f:76:11:1b:70:6f:4d:26:4f:e0:06:
+                    9b:8c:e3:76:91:81:4a:4e:98:5d:2e:f4:bd:23:4d:
+                    e7:5d:9b:ea:68:4d:03:9e:35:90:c5:f2:8d:ae:ed:
+                    44:4f:f3:50:dc:2b:ef:ae:44:35:79:78:3d:65:4b:
+                    d9:16:98:aa:be:08:47:25:af:68:1c:0b:8e:c1:aa:
+                    02:a7:61:4f:4d:15:1b:07:3c:4e:60:b3:9a:d5:c1:
+                    39:34:4e:8e:e7:93:46:f1:75:95:aa:16:9a:1d:e6:
+                    49:15:a5:ae:06:8a:45:16:a9:af:59:60:9b:c6:6d:
+                    3d:19:57:5d:de:31:d5:dc:96:0e:a4:25:fe:7a:07:
+                    71:c5:40:c0:a3:d0:d5:84:47:14:7a:5a:f1:07:75:
+                    79:35
+                Exponent: 65537 (0x10001)
+        X509v3 extensions:
+            X509v3 Subject Key Identifier:
+                44:0C:AF:4A:74:B4:C7:65:02:B2:95:F1:91:7C:A3:CC:E6:3E:99:E8
+            X509v3 Authority Key Identifier:
+                keyid:44:0C:AF:4A:74:B4:C7:65:02:B2:95:F1:91:7C:A3:CC:E6:3E:99:E8
+                DirName:/O=Test Org/CN=Test Org rauc CA Development
+                serial:01
+
+            X509v3 Basic Constraints:
+                CA:TRUE
+    Signature Algorithm: sha256WithRSAEncryption
+         30:07:51:4d:d6:2c:0c:2f:3e:6c:5c:34:1f:07:21:8d:50:77:
+         9a:a6:81:75:62:f0:fe:ff:3b:5b:d0:7c:d1:45:e7:e2:67:d4:
+         23:cb:af:9a:8b:f4:2b:d2:33:3d:45:bb:a7:7d:b4:9b:41:db:
+         fb:62:ac:83:fc:41:ae:e5:dc:2d:df:7d:72:7e:df:34:01:60:
+         94:7f:15:78:84:87:f0:23:e4:8e:b8:dc:71:cb:84:4b:25:bb:
+         62:8f:fd:7f:d3:3c:1d:85:45:fb:03:7c:a2:bc:c4:a8:fa:2b:
+         ec:79:67:8d:f4:5f:37:a8:5a:54:bc:b3:78:11:0b:8b:29:90:
+         8b:48:4a:d7:87:93:96:97:72:10:1d:70:29:f8:e4:c3:81:6d:
+         7d:c3:6e:d4:c8:1b:0b:0d:f9:c0:b9:7b:11:54:e2:af:8b:a0:
+         45:de:c2:67:81:8c:0c:9d:ba:a1:31:8b:f2:cc:da:c7:cc:6d:
+         21:92:2a:57:29:9c:48:92:75:d9:1a:6e:d3:ee:53:66:83:2e:
+         08:74:09:5d:78:13:99:34:7d:16:8c:ba:29:75:80:20:8b:ca:
+         91:19:29:64:ef:64:37:de:5b:22:18:99:5b:63:69:9a:a2:44:
+         21:70:30:41:f2:58:27:ab:4f:5c:d0:e1:94:5d:d1:5b:8d:fd:
+         bf:8f:a9:99
+-----BEGIN CERTIFICATE-----
+MIIDhjCCAm6gAwIBAgIBATANBgkqhkiG9w0BAQsFADA6MREwDwYDVQQKDAhUZXN0
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+i8qRGSlk72Q33lsiGJlbY2maokQhcDBB8lgnq09c0OGUXdFbjf2/j6mZ
+-----END CERTIFICATE-----
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc/files/system.conf
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc/files/system.conf
@ -0,0 +1,17 @@
+[system]
+compatible=@MACHINE@
+bootloader=uboot
+data-directory=/data/
+
+[keyring]
+path=/etc/rauc/ca.cert.pem
+
+[slot.rootfs.0]
+device=/dev/disk/by-partlabel/rootfsA
+type=ext4
+bootname=A
+
+[slot.rootfs.1]
+device=/dev/disk/by-partlabel/rootfsB
+type=ext4
+bootname=B
--- a/dynamic-layers/rk-rauc-demo/recipes-core/rauc/rauc-conf.bbappend
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/rauc/rauc-conf.bbappend
@ -0,0 +1,7 @@
+inherit rk-rauc-demo-features-check
+
+FILESEXTRAPATHS:prepend:rk-rauc-demo := "${THISDIR}/files:"
+
+do_install:prepend:rk-rauc-demo() {
+	sed -ie 's!@MACHINE@!${MACHINE}!g' ${UNPACKDIR}/system.conf
+}
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/abd-partition.bb
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/abd-partition.bb
@ -0,0 +1,26 @@
+SUMMARY = "A/B+D partition definition for systemd's repart mechanism"
+LICENSE = "OSL-3.0"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/OSL-3.0;md5=438ec6d864bbb958a49df939a56511cf"
+
+inherit rk-rauc-demo-features-check systemd
+
+SYSTEMD_SERVICE:${PN} = "data.mount"
+
+S = "${UNPACKDIR}"
+
+SRC_URI = " \
+	file://data.mount \
+	file://25-rootfsA.conf \
+	file://35-rootfsB.conf \
+	file://45-data.conf \
+	"
+
+do_install() {
+	install -d ${D}${sysconfdir}/repart.d/
+	install -m 0644 ${UNPACKDIR}/25-rootfsA.conf ${D}${sysconfdir}/repart.d/
+	install -m 0644 ${UNPACKDIR}/35-rootfsB.conf ${D}${sysconfdir}/repart.d/
+	install -m 0644 ${UNPACKDIR}/45-data.conf ${D}${sysconfdir}/repart.d/
+
+	install -d ${D}${sysconfdir}/systemd/system
+	install -m 0644 ${UNPACKDIR}/data.mount ${D}${sysconfdir}/systemd/system/
+}
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/25-rootfsA.conf
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/25-rootfsA.conf
@ -0,0 +1,4 @@
+[Partition]
+Type=root
+Weight=250
+SizeMaxBytes=5G
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/35-rootfsB.conf
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/35-rootfsB.conf
@ -0,0 +1,7 @@
+[Partition]
+Type=root
+Label=rootfsB
+Weight=250
+SizeMaxBytes=5G
+Format=ext4
+GrowFileSystem=yes
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/45-data.conf
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/45-data.conf
@ -0,0 +1,6 @@
+[Partition]
+Type=root-secondary
+Label=data
+Weight=500
+Format=ext4
+GrowFileSystem=yes
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/data.mount
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/files/data.mount
@ -0,0 +1,10 @@
+[Unit]
+Description=data partition
+
+[Mount]
+What=/dev/disk/by-partlabel/data
+Where=/data
+Type=ext4
+
+[Install]
+WantedBy=multi-user.target
--- a/dynamic-layers/rk-rauc-demo/recipes-core/systemd/systemd_%.bbappend
+++ b/dynamic-layers/rk-rauc-demo/recipes-core/systemd/systemd_%.bbappend
@ -0,0 +1,3 @@
+inherit rk-rauc-demo-features-check
+
+PACKAGECONFIG:append:rk-rauc-demo = " repart openssl"