Build kernel

BoardConfig.mk

@@ -27,16 +27,36 @@ TARGET_CPU_ABI2 := armeabi
 TARGET_CPU_SMP := true
 
 # Kernel Config
+#BOARD_MKBOOTIMG_ARGS := --ramdisk_offset 0x04000000 --tags_offset 0x00000100
+#BOARD_KERNEL_CMDLINE := androidboot.selinux=permissive
+#BOARD_KERNEL_BASE := 0x80000000
+#BOARD_KERNEL_PAGESIZE := 4096
+#BOARD_PAGE_SIZE := 0x800
+
+
+# Kernel
+BOARD_CUSTOM_BOOTIMG_MK := device/amazon/tank/mkbootimg.mk
 BOARD_MKBOOTIMG_ARGS := --ramdisk_offset 0x04000000 --tags_offset 0x00000100
-BOARD_KERNEL_CMDLINE := androidboot.selinux=permissive
+TARGET_KERNEL_CONFIG := tank_defconfig
+TARGET_KERNEL_SOURCE := kernel/amazon/mt8127
 BOARD_KERNEL_BASE := 0x80000000
-BOARD_KERNEL_PAGESIZE := 4096
-BOARD_PAGE_SIZE := 0x800
+BOARD_KERNEL_TAGS_OFFSET := 0x00000100
+BOARD_KERNEL_PAGESIZE := 2048
+BOARD_RAMDISK_OFFSET := 0x04000000
+BOARD_SECOND_OFFSET := 0x00f00000
+TARGET_KERNEL_CROSS_COMPILE_PREFIX := arm-eabi-
+
+
+BOARD_KERNEL_CMDLINE := androidboot.selinux=permissive
+#BOARD_KERNEL_CMDLINE := androidboot.console=ttyMSM0 androidboot.hardware=qcom
+#BOARD_KERNEL_CMDLINE += user_debug=31 msm_rtb.filter=0x37 ehci-hcd.park=3
+#BOARD_KERNEL_CMDLINE += service_locator.enable=1
+#BOARD_KERNEL_CMDLINE += swiotlb=2048
 
 BOARD_HAS_MTK_HARDWARE := true
 MTK_HARDWARE := true
 
-TARGET_PREBUILT_KERNEL := device/amazon/tank/boot.img
+#TARGET_PREBUILT_KERNEL := device/amazon/tank/boot.img
 
 # Flags
 TARGET_GLOBAL_CFLAGS += -mfpu=neon -mfloat-abi=softfp
@@ -74,6 +94,9 @@ TARGET_DISPLAY_USE_RETIRE_FENCE := true
 MAX_EGL_CACHE_KEY_SIZE := 12*1024
 MAX_EGL_CACHE_SIZE := 1024*1024
 
+TARGET_RUNNING_WITHOUT_SYNC_FRAMEWORK := true
+TARGET_HAS_WAITFORVSYNC := true
+
 # Surfaceflinger optimization for VD surfaces
 TARGET_FORCE_HWC_FOR_VIRTUAL_DISPLAYS := true
 #NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3

full_tank.mk

@@ -106,8 +106,12 @@ $(call inherit-product, $(SRC_TARGET_DIR)/product/core_minimal.mk)
 
 ######## tank
 
+# Ramdisk
 PRODUCT_COPY_FILES += \
-        device/amazon/tank/boot.img:kernel
+    $(call find-copy-subdir-files,*,device/amazon/tank/rootdir,root)
+
+#PRODUCT_COPY_FILES += \
+#        device/amazon/tank/boot.img:kernel
 
 # Inherit from the common Open Source product configuration
 $(call inherit-product, $(SRC_TARGET_DIR)/product/full_base.mk)

mkbootimg.mk

@@ -0,0 +1,77 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# can this be done in bash? credits go to bgcngm
+define make_header
+  perl -e 'print pack("a4 L a32 a472", "\x88\x16\x88\x58", $$ARGV[0], $$ARGV[1], "\xFF"x472)' $(1) $(2) > $(3)
+endef
+
+# this is overriding targets from build/core/Makefile
+$(INSTALLED_KERNEL_TARGET).mtk.header: $(INSTALLED_KERNEL_TARGET)
+	size=$$($(call get-file-size,$(INSTALLED_KERNEL_TARGET))); \
+		$(call make_header, $$((size)), "KERNEL", $@)
+$(INSTALLED_KERNEL_TARGET).mtk: $(INSTALLED_KERNEL_TARGET).mtk.header
+	$(call pretty,"Adding MTK header to kernel.")
+	cat $(INSTALLED_KERNEL_TARGET).mtk.header $(INSTALLED_KERNEL_TARGET) \
+		> $@
+
+$(INSTALLED_RAMDISK_TARGET).mtk.header: $(INSTALLED_RAMDISK_TARGET)
+	size=$$($(call get-file-size,$(INSTALLED_RAMDISK_TARGET))); \
+		$(call make_header, $$((size)), "ROOTFS", $@)
+$(INSTALLED_RAMDISK_TARGET).mtk: $(INSTALLED_RAMDISK_TARGET).mtk.header
+	$(call pretty,"Adding MTK header to ramdisk.")
+	cat $(INSTALLED_RAMDISK_TARGET).mtk.header $(INSTALLED_RAMDISK_TARGET) \
+		> $@
+
+$(PRODUCT_OUT)/recovery_kernel.mtk.header: $(recovery_kernel)
+	size=$$($(call get-file-size,$(recovery_kernel))); \
+		$(call make_header, $$((size)), "KERNEL", $@)
+$(PRODUCT_OUT)/recovery_kernel.mtk: $(PRODUCT_OUT)/recovery_kernel.mtk.header
+	$(call pretty,"Adding MTK header to recovery kernel.")
+	cat $(PRODUCT_OUT)/recovery_kernel.mtk.header $(recovery_kernel) > $@
+
+$(recovery_ramdisk).mtk.header: $(recovery_ramdisk)
+	size=$$($(call get-file-size,$(recovery_ramdisk))); \
+		$(call make_header, $$((size)), "RECOVERY", $@)
+$(recovery_ramdisk).mtk:  $(MKBOOTIMG) $(recovery_ramdisk).mtk.header
+	$(call pretty,"Adding MTK header to recovery ramdisk.")
+	cat $(recovery_ramdisk).mtk.header $(recovery_ramdisk) > $@
+
+INTERNAL_MTK_BOOTIMAGE_ARGS := \
+		--kernel $(INSTALLED_KERNEL_TARGET).mtk \
+		--ramdisk $(INSTALLED_RAMDISK_TARGET).mtk
+
+$(INSTALLED_BOOTIMAGE_TARGET): $(MKBOOTIMG)\
+		$(INSTALLED_RAMDISK_TARGET).mtk $(INSTALLED_KERNEL_TARGET).mtk
+	$(call pretty,"Target boot image: $@")
+	$(MKBOOTIMG) $(INTERNAL_MTK_BOOTIMAGE_ARGS) $(BOARD_MKBOOTIMG_ARGS) \
+		--output $@
+	$(hide) $(call assert-max-image-size,$@, \
+		$(BOARD_BOOTIMAGE_PARTITION_SIZE),raw)
+	@echo -e ${CL_CYN}"Made boot image: $@"${CL_RST}
+
+INTERNAL_MTK_RECOVERYIMAGE_ARGS := \
+		--kernel $(INSTALLED_KERNEL_TARGET).mtk \
+		--ramdisk $(recovery_ramdisk).mtk
+
+$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTIMG) \
+		$(recovery_ramdisk).mtk $(INSTALLED_KERNEL_TARGET).mtk
+	@echo -e ${CL_CYN}"----- Making recovery image ------"${CL_RST}
+	$(MKBOOTIMG) $(INTERNAL_MTK_RECOVERYIMAGE_ARGS) \
+		$(BOARD_MKBOOTIMG_ARGS) --output $@
+	$(hide) $(call assert-max-image-size,$@, \
+		$(BOARD_RECOVERYIMAGE_PARTITION_SIZE),raw)
+	@echo -e ${CL_CYN}"Made recovery image: $@"${CL_RST}

roomservice.xml

@@ -3,6 +3,7 @@
 
   <project name="cmtank/device_amazon_tank" path="device/amazon/tank" remote="github" revision="cm-12.1" />
   <project name="cmtank/vendor_amazon_tank" path="vendor/amazon/tank" remote="github" revision="cm-12.1" />
+  <project name="cmtank/android_kernel_amazon_mt8127" path="kernel/amazon/mt8127" remote="github" revision="cm-12.1" />
 
   <project name="LineageOS/android_hardware_broadcom_wlan" path="hardware/broadcom/wlan" remote="github" revision="cm-12.1" />
 

rootdir/fstab.mt8127

@@ -0,0 +1,11 @@
+# Android fstab file.
+#<src>           <mnt_point>         <type>    <mnt_flags and options>                 <fs_mgr_flags>
+# The filesystem that contains the filesystem checker binary (typically /system) cannot
+# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
+/dev/block/platform/mtk-msdc.0/by-name/userdata   /data               ext4      noatime,nosuid,nodev,noauto_da_alloc,discard                wait,check,resize,encryptable=footer
+/dev/block/platform/mtk-msdc.0/by-name/cache      /cache              ext4      noatime,nosuid,nodev,noauto_da_alloc,discard                wait,check
+/devices/platform/mtk-msdc.0/mmc_host   auto      vfat      defaults        voldmanaged=sdcard0:emmc@fat,noemulatedsd
+/devices/platform/mtk-msdc.1/mmc_host   auto      vfat      defaults        voldmanaged=sdcard1:auto,noemulatedsd
+/devices/platform/mt_usb                auto      vfat      defaults        voldmanaged=usbotg:auto
+/dev/block/zram0			none	  swap	    defaults	    zramsize=268435456
+/dev/block/platform/mtk-msdc.0/by-name/MISC     /misc       emmc      defaults        defaults

rootdir/init.base.rc

@@ -0,0 +1,46 @@
+# Copyright (c) 2013, The Linux Foundation. All rights reserved.
+# Not a Contribution.
+#
+# Copyright (C) 2012 The Android Open Source Project
+#
+# IMPORTANT: Do not create world writable files or directories.
+# This is a common source of Android security bugs.
+#
+# MTK variant
+#
+# init.rc content unique to Mediatek devices should go here. Otherwise,
+# put it in the common init.rc
+
+on boot
+    # Adjust minimum free memory space (default is 2.5M)
+    write /proc/sys/vm/min_free_kbytes 16384
+
+on init
+    mkdir /config 0500 root root
+
+service drm /system/bin/drmserver
+    class main
+    user drm
+    group drm system inet drmrpc
+
+service media /system/bin/mediaserver
+    class main
+    user media
+##ACOS_MOD_BEGIN {asset_storage}
+    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc mediadrm drm amz_group media
+##ACOS_MOD_END {asset_storage}
+    onrestart restart drm
+    ioprio rt 4
+
+service keystore /system/bin/keystore /data/misc/keystore
+    class main
+    user keystore
+    group keystore drmrpc
+
+service ril-daemon /system/bin/rild
+    class main
+    socket rild stream 660 root radio
+    socket rild-debug stream 660 radio system
+    user root
+    disabled
+    group radio cache inet misc audio sdcard_r sdcard_rw log dhcp net_admin

rootdir/init.charging.rc

@@ -0,0 +1,11 @@
+import init.fulldump.rc
+
+on charger
+    mount ext4 /dev/block/platform/mtk-msdc.0/by-name/system /system ro wait
+    start kpoc_charger
+
+service kpoc_charger /system/bin/kpoc_charger
+    user root
+    group root
+    class charger
+