rova: Support Retrofit Dynamic Partitions

iusmac: adapt for ORFX
Signed-off-by: iusmac <iusico.maxim@libero.it>

BoardConfig.mk

@@ -46,6 +46,7 @@ BOARD_KERNEL_CMDLINE := console=ttyHSL0,115200,n8 androidboot.console=ttyHSL0 an
 BOARD_KERNEL_CMDLINE += androidboot.usbconfigfs=true
 BOARD_KERNEL_CMDLINE += androidboot.mode=recovery
 BOARD_KERNEL_CMDLINE += audit=0
+BOARD_KERNEL_CMDLINE += androidboot.android_dt_dir=/non-existent androidboot.boot_devices=soc/7824900.sdhci
 BOARD_KERNEL_PAGESIZE := 2048
 BOARD_KERNEL_TAGS_OFFSET := 0x00000100
 BOARD_RAMDISK_OFFSET := 0x01000000
@@ -79,12 +80,22 @@ BOARD_FLASH_BLOCK_SIZE := 131072 # (BOARD_KERNEL_PAGESIZE * 64)
 BOARD_VENDORIMAGE_PARTITION_SIZE := 872415232
 
 BOARD_USES_METADATA_PARTITION := true
-BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
 
 # Workaround for error copying vendor files to recovery ramdisk
 TARGET_COPY_OUT_VENDOR := vendor
 BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
 
+# Partitions - dynamic
+BOARD_SUPER_PARTITION_BLOCK_DEVICES := cust system
+BOARD_SUPER_PARTITION_METADATA_DEVICE := system
+BOARD_SUPER_PARTITION_CUST_DEVICE_SIZE := 536870912
+BOARD_SUPER_PARTITION_SYSTEM_DEVICE_SIZE := 3221225472
+BOARD_SUPER_PARTITION_SIZE := $(shell expr $(BOARD_SUPER_PARTITION_CUST_DEVICE_SIZE) + $(BOARD_SUPER_PARTITION_SYSTEM_DEVICE_SIZE) )
+
+BOARD_SUPER_PARTITION_GROUPS := mi8937_dynpart
+BOARD_MI8937_DYNPART_SIZE := $(shell expr $(BOARD_SUPER_PARTITION_SIZE) - 4194304 )
+BOARD_MI8937_DYNPART_PARTITION_LIST := system system_ext product vendor odm
+
 # Properties
 TARGET_VENDOR_PROP += device/xiaomi/rova/vendor.prop
 

device.mk

@@ -15,6 +15,10 @@
 # limitations under the License.
 #
 
+# Dynamic Partitions
+PRODUCT_USE_DYNAMIC_PARTITIONS := true
+PRODUCT_RETROFIT_DYNAMIC_PARTITIONS := true
+
 # Emulated storage
 $(call inherit-product, $(SRC_TARGET_DIR)/product/emulated_storage.mk)
 

recovery/root/init.recovery.qcom.rc

@@ -15,6 +15,9 @@ on init
     # DT2W
     write /proc/sys/dev/xiaomi_msm8937_touchscreen/enable_dt2w 1
 
+# Retrofit Dynamic Partitions
+on init
+    exec u:r:recovery:s0 -- /system/bin/rdp.sh
 
 on boot
     write /sys/bus/cpu/devices/cpu0/cpufreq/scaling_governor conservative

recovery/root/system/bin/rdp.sh

@@ -0,0 +1,11 @@
+#!/system/bin/sh
+
+if dd if=/dev/block/by-name/system bs=256k count=1|strings|grep mi8937_dynpart > /dev/null; then
+    echo >> /system/etc/recovery.fstab
+    for p in system system_ext product vendor odm; do
+        echo "${p} /${p} ext4 rw,barrier=1,discard wait,logical" >> /system/etc/recovery.fstab
+    done
+else
+    echo >> /system/etc/twrp.flags
+    cat /system/etc/twrp.flags.nondynpart >> /system/etc/twrp.flags
+fi

recovery/root/system/etc/twrp.flags

@@ -1,9 +1,4 @@
 # mount point   fstype device                                   device2          flags
-/system_root    ext4   /dev/block/bootdevice/by-name/system                      flags=backup=0;display="System";wipeingui
-/system_image   emmc   /dev/block/bootdevice/by-name/system                      flags=backup=1;flashimg=1
-/vendor         ext4   /dev/block/bootdevice/by-name/cust                        flags=slotselect;display="Vendor";backup=1;wipeingui
-/vendor_image   emmc   /dev/block/bootdevice/by-name/cust                        flags=backup=1;flashimg=1
-
 /data           ext4   /dev/block/bootdevice/by-name/userdata                    flags=fileencryption=aes-256-xts:aes-256-cts;metadata_encryption=aes-256-xts;fsflags="discard"
 /metadata       ext4   /dev/block/bootdevice/by-name/oem                         flags=display="Metadata";fsflags="discard"
 /cache          ext4   /dev/block/bootdevice/by-name/cache                       flags=display="Cache"

recovery/root/system/etc/twrp.flags.nondynpart

@@ -0,0 +1,5 @@
+# mount point   fstype device                                   device2          flags
+/system_root    ext4   /dev/block/bootdevice/by-name/system                      flags=backup=0;display="System";wipeingui
+/system_image   emmc   /dev/block/bootdevice/by-name/system                      flags=backup=1;flashimg=1
+/vendor         ext4   /dev/block/bootdevice/by-name/cust                        flags=slotselect;display="Vendor";backup=1;wipeingui
+/vendor_image   emmc   /dev/block/bootdevice/by-name/cust                        flags=backup=1;flashimg=1