Switch to nexus style mode completely v2

This is a 2nd iteration of the patch in which we go completely Nexus.
We eliminate external sdcard completely and use it as /data that can be fully encrypted.
In addition we perform series of storage layout changes, cleanups and optimizations.

Now to the details:
* Use original "userdata" parititon as /system (60% more space for GAPPS and DEX data).
* Reduce size of primary zram swap by half (Add more RAM).
* Use original "system" as secondary swap (Provide backup swap for smaller zram swap).
* We create pre-odexed build which should allow the following:
  - Avoid usage of userdata for DEX data of system apps and data duplication
  - Avoid encryption of system DEX data (which is public)
  - Allow much faster access from /system partition
  - Allow much faster boot with encrypted data (when data is encrypted,
    dalvik-cache is also and need to be re-created on each boot for asking user's password!)
  - Enable ART-small mode which pre-compiles (into dalvik-cache) only bare minimum of clasees
* Add misc recovery related settings and coresponding changes to TWRP in order to support above.
* Modify recovery related settings (this device tree can be used for building TWRP image)
* Remove duplicated default init.rc code
* General cleanups

Change-Id: I60b8303fce99a83c162ca11bb1304a551c48404a

Author: eugenesan

BoardConfig.mk

@@ -124,6 +124,7 @@ TARGET_RECOVERY_PIXEL_FORMAT := "RGBX_8888"
 RECOVERY_GRAPHICS_USE_LINELENGTH := true
 TARGET_RECOVERY_DEVICE_DIRS += device/htc/pyramid
 RECOVERY_SDCARD_ON_DATA := true
+BOARD_HAS_NO_REAL_SDCARD := true
 
 # Required for Sensors
 COMMON_GLOBAL_CFLAGS += -DNEEDS_VECTORIMPL_SYMBOLS
@@ -148,9 +149,13 @@ BOARD_HARDWARE_CLASS := $(LOCAL_PATH)/cmhw
 # RIL
 BOARD_RIL_CLASS := ../../../$(LOCAL_PATH)/ril
 
+# USB
+TARGET_USE_CUSTOM_LUN_FILE_PATH := "/sys/devices/platform/msm_hsusb/gadget/lun0/file"
+
 # Misc
 BOARD_USES_LEGACY_MMAP := true
 BOARD_SUPPRESS_EMMC_WIPE := true
+BOARD_SUPPRESS_SECURE_ERASE := true
 
 # Use dlmalloc
 MALLOC_IMPL := dlmalloc
@@ -173,7 +178,7 @@ TARGET_USERIMAGES_USE_F2FS := true
 BOARD_VOLD_MAX_PARTITIONS := 36
 BOARD_BOOTIMAGE_PARTITION_SIZE := 16777216
 BOARD_RECOVERYIMAGE_PARTITION_SIZE := 16776192
-BOARD_SYSTEMIMAGE_PARTITION_SIZE := 838859776
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1252770816
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 1252770816
 BOARD_FLASH_BLOCK_SIZE := 262144
 
@@ -187,8 +192,10 @@ TW_NO_CPU_TEMP := true
 TW_NEW_ION_HEAP := true
 TW_INCLUDE_NTFS_3G := true
 TW_BRIGHTNESS_PATH := "/sys/class/leds/lcd-backlight/brightness"
-TARGET_USE_CUSTOM_LUN_FILE_PATH := "/sys/devices/platform/msm_hsusb/gadget/lun0/file"
 TW_BACKUP_DATA_MEDIA := true
-TW_INTERNAL_STORAGE_PATH := /sdcard
-TW_EXTERNAL_STORAGE_PATH := /sdcard1
-TW_INCLUDE_L_CRYPTO := true
+
+# Dalvik/ART optimizations
+WITH_DEXPREOPT := true
+WITH_DEXPREOPT_COMP := false
+WITH_DEXPREOPT_PIC := true
+WITH_ART_SMALL_MODE := true

device_pyramid.mk

@@ -156,7 +156,6 @@ DEVICE_PACKAGE_OVERLAYS += $(LOCAL_PATH)/overlay
 # Ramdisk
 PRODUCT_PACKAGES += \
     fstab.pyramid \
-    init.pyramid.sh \
     init.pyramid.rc \
     init.pyramid.usb.rc \
     ueventd.pyramid.rc \

overlay/frameworks/base/core/res/res/xml/storage_list.xml

@@ -26,16 +26,8 @@
         android:emulated="true"
         android:primary="true"
         android:mtpReserve="100" />
-    <!-- external sdcard (non-removable due to optional usage of second partition for data) -->
-    <storage android:mountPoint="/storage/sdcard1"
-        android:storageDescription="@string/storage_sd_card"
-        android:primary="false"
-        android:emulated="false"
-        android:removable="false"
-        android:allowMassStorage="false"
-        android:maxFileSize="4096" />
     <!-- external USB OTG storage -->
-    <storage android:mountPoint="/storage/usb-otg"
+    <storage android:mountPoint="/storage/usbdisk"
         android:storageDescription="@string/storage_usb"
         android:removable="true" />
 </StorageList>

recovery.fstab

@@ -0,0 +1 @@
+recovery/root/etc/twrp.fstab

recovery.fstab

@@ -2,10 +2,8 @@
 
 /boot           emmc            /dev/block/mmcblk0p20
 /recovery       emmc            /dev/block/mmcblk0p21
-/system         ext4            /dev/block/mmcblk0p22
-/data           f2fs            /dev/block/mmcblk0p23   length=-16384
-/cache          f2fs            /dev/block/mmcblk0p28
+/system         ext4            /dev/block/mmcblk0p23
+/data           f2fs            /dev/block/mmcblk1      length=-16384
+/cache          f2fs            /dev/block/mmcblk0p24
 /misc           emmc            /dev/block/mmcblk0p31
-/sdcard1        vfat            /dev/block/mmcblk1p1    /dev/block/mmcblk1      flags=display="sdcard1";andsec;storage;wipeingui;removable
-/data1          f2fs            /dev/block/mmcblk1p2    /dev/block/mmcblk1      flags=display="data1";wipeingui;removable
-/usb-otg        vfat            /dev/block/sda1         /dev/block/sda          flags=display="usb-otg";storage;wipeingui;removable
+/usbdisk        vfat            /dev/block/sda1         /dev/block/sda          flags=display="usbdisk";storage;wipeingui;removable

recovery/root/etc/twrp.fstab

@@ -8,14 +8,6 @@ LOCAL_SRC_FILES		:= etc/fstab.pyramid
 LOCAL_MODULE_PATH	:= $(TARGET_ROOT_OUT)
 include $(BUILD_PREBUILT)
 
-include $(CLEAR_VARS)
-LOCAL_MODULE		:= init.pyramid.sh
-LOCAL_MODULE_TAGS	:= optional eng
-LOCAL_MODULE_CLASS	:= ETC
-LOCAL_SRC_FILES		:= etc/init.pyramid.sh
-LOCAL_MODULE_PATH	:= $(TARGET_ROOT_OUT)
-include $(BUILD_PREBUILT)
-
 include $(CLEAR_VARS)
 LOCAL_MODULE		:= init.pyramid.rc
 LOCAL_MODULE_TAGS	:= optional eng

rootdir/Android.mk

@@ -7,22 +7,18 @@
 /dev/block/platform/msm_sdcc.1/by-name/boot        /boot              emmc        defaults                                                  defaults
 /dev/block/platform/msm_sdcc.1/by-name/recovery    /recovery          emmc        defaults                                                  defaults
 /dev/block/platform/msm_sdcc.1/by-name/misc        /misc              emmc        defaults                                                  defaults
-/dev/block/platform/msm_sdcc.1/by-name/devlog      /cache             ext4        noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,noauto_da_alloc,errors=panic wait,check
-/dev/block/platform/msm_sdcc.1/by-name/devlog      /cache             f2fs        rw,discard,nosuid,nodev,noatime,nodiratime,inline_xattr   wait,check
-/dev/block/platform/msm_sdcc.1/by-name/system      /system            ext4        ro,noatime,barrier=1                                      wait
-/dev/block/platform/msm_sdcc.1/by-name/userdata    /data              ext4        noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,noauto_da_alloc,errors=panic wait,check,encryptable=footer,length=-16384
-/dev/block/platform/msm_sdcc.1/by-name/userdata    /data              f2fs        noatime,nodiratime,nosuid,nodev,inline_xattr,discard,rw   wait,check,encryptable=footer,length=-16384
-/dev/block/platform/msm_sdcc.3/by-num/p2           /data1             ext4        noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,noauto_da_alloc,errors=panic wait,check
-/dev/block/platform/msm_sdcc.3/by-num/p2           /data1             f2fs        noatime,nodiratime,nosuid,nodev,inline_xattr,discard,rw   wait,check
-
-# SD card
-/devices/platform/msm_sdcc.3/mmc_host/mmc1*        auto               vfat        defaults                                                  voldmanaged=sdcard1:auto,noemulatedsd
+/dev/block/platform/msm_sdcc.1/by-name/devlog      /devlog            ext4        rw,noatime,nosuid,nodev,barrier=0                         wait
+/dev/block/platform/msm_sdcc.1/by-name/userdata    /system            ext4        ro,noatime,barrier=0                                      wait
+/dev/block/platform/msm_sdcc.1/by-name/cache       /cache             ext4        noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,noauto_da_alloc,errors=panic wait,check
+/dev/block/platform/msm_sdcc.1/by-name/cache       /cache             f2fs        rw,discard,nosuid,nodev,noatime,nodiratime,inline_xattr   wait,check
+/dev/block/platform/msm_sdcc.3/mmcblk1             /data              ext4        noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,noauto_da_alloc,errors=panic wait,check,encryptable=footer,length=-16384
+/dev/block/platform/msm_sdcc.3/mmcblk1             /data              f2fs        noatime,nodiratime,nosuid,nodev,inline_xattr,discard,rw   wait,check,encryptable=footer,length=-16384
 
 # USB storage
-d*                                                 auto               auto        defaults                                                  voldmanaged=usbdisk:auto,noemulatedsd
+/devices/platform/msm_hsusb_host.0/usb1            auto               auto        defaults                                                  voldmanaged=usbdisk:auto,noemulatedsd
 
 # ZRAM
 /dev/block/zram0                                   none               swap        defaults                                                  zramsize=134217728
 
-# Cache as secondary swap
-/dev/block/platform/msm_sdcc.1/by-name/cache       none               swap        defaults                                                  defaults
+# System as secondary swap
+/dev/block/platform/msm_sdcc.1/by-name/system      none               swap        defaults                                                  defaults

rootdir/etc/fstab.pyramid

@@ -18,14 +18,6 @@ on init
     export EMULATED_STORAGE_SOURCE /mnt/shell/emulated
     export EMULATED_STORAGE_TARGET /storage/emulated
 
-    # Secondary storage
-    mkdir /mnt/media_rw/sdcard1 0700 media_rw media_rw
-    mkdir /storage/sdcard1 0700 root root
-    export SECONDARY_STORAGE /storage/sdcard1
-
-    # Secondary data (optional)
-    mkdir /data1 0771 root root
-
     # Support legacy paths
     symlink /storage/emulated/legacy /sdcard
     symlink /storage/emulated/legacy /mnt/sdcard
@@ -67,9 +59,6 @@ on fs
     # link widevine drm library path
     symlink /system/vendor/lib /vendor/lib
 
-    # run device's script
-    exec /init.pyramid.sh
-
     mount_all /remount.pyramid
 
 on post-fs-data
@@ -280,11 +269,6 @@ service iprenew_wlan0 /system/bin/dhcpcd -n
     disabled
     oneshot
 
-# external sdcard daemon running as media_rw (1023)
-service fuse_sdcard1 /system/bin/sdcard -u 1023 -g 1023 -d /mnt/media_rw/sdcard1 /storage/sdcard1
-    class late_start
-    disabled
-
 # virtual sdcard daemon running as media_rw (1023)
 service sdcard /system/bin/sdcard -u 1023 -g 1023 -l /data/media /mnt/shell/emulated
     class late_start