initial buildroot for linux 5.15

This commit is contained in:
Huan.Feng
2021-12-06 14:12:13 +08:00
parent d7767d594e
commit 7b6fc358fa
12736 changed files with 508822 additions and 0 deletions
+1
View File
@@ -0,0 +1 @@
root=PARTUUID=%U/PARTNROFF=1 rootwait rw noinitrd kern_guid=%U console=tty0
+38
View File
@@ -0,0 +1,38 @@
/dts-v1/;
/ {
description = "Chrome OS kernel image with FDT";
#address-cells = <1>;
images {
kernel-1 {
data = /incbin/("Image");
type = "kernel_noload";
arch = "arm64";
os = "linux";
compression = "none";
load = <0>;
entry = <0>;
};
fdt-1 {
description = "mt8173-elm.dtb";
data = /incbin/("mt8173-elm.dtb");
type = "flat_dt";
arch = "arm64";
compression = "none";
hash-1 {
algo = "sha1";
};
};
};
configurations {
default = "conf-1";
conf-1 {
kernel = "kernel-1";
fdt = "fdt-1";
};
};
};
+477
View File
@@ -0,0 +1,477 @@
CONFIG_SYSVIPC=y
CONFIG_NO_HZ_IDLE=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT=y
CONFIG_IRQ_TIME_ACCOUNTING=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_NUMA_BALANCING=y
CONFIG_MEMCG=y
CONFIG_BLK_CGROUP=y
CONFIG_CGROUP_PIDS=y
CONFIG_CGROUP_HUGETLB=y
CONFIG_CPUSETS=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_CGROUP_PERF=y
CONFIG_USER_NS=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_COMPAT_BRK is not set
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_ARCH_MEDIATEK=y
CONFIG_ARM64_VA_BITS_48=y
CONFIG_SCHED_MC=y
CONFIG_SCHED_SMT=y
CONFIG_NR_CPUS=4
CONFIG_NUMA=y
CONFIG_PARAVIRT=y
CONFIG_CRASH_DUMP=y
CONFIG_COMPAT=y
CONFIG_RANDOMIZE_BASE=y
# CONFIG_EFI is not set
# CONFIG_SUSPEND is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
CONFIG_PM_ADVANCED_DEBUG=y
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_ARM_CPUIDLE=y
CONFIG_ARM_PSCI_CPUIDLE=y
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
CONFIG_CPUFREQ_DT=y
CONFIG_ARM_SCPI_CPUFREQ=y
CONFIG_ARM_MEDIATEK_CPUFREQ=y
CONFIG_ARM_SCPI_PROTOCOL=y
CONFIG_JUMP_LABEL=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEBUG_FS is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_KSM=y
CONFIG_MEMORY_FAILURE=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_CMA=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_INET_UDP_DIAG=y
# CONFIG_IPV6 is not set
CONFIG_CFG80211=y
# CONFIG_CFG80211_DEFAULT_PS is not set
CONFIG_MAC80211=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_FW_LOADER_USER_HELPER=y
CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
CONFIG_BRCMSTB_GISB_ARB=y
CONFIG_VEXPRESS_CONFIG=y
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_DATAFLASH=y
CONFIG_MTD_SST25L=y
CONFIG_MTD_RAW_NAND=y
CONFIG_MTD_NAND_DENALI_DT=y
CONFIG_MTD_SPI_NOR=y
CONFIG_OF_OVERLAY=y
# CONFIG_BLK_DEV is not set
CONFIG_SRAM=y
CONFIG_EEPROM_AT24=m
CONFIG_EEPROM_AT25=m
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_SAS_LIBSAS=y
CONFIG_SCSI_UFSHCD=y
CONFIG_SCSI_UFSHCD_PLATFORM=y
CONFIG_MD=y
CONFIG_BLK_DEV_MD=m
CONFIG_BLK_DEV_DM=m
CONFIG_DM_MIRROR=m
CONFIG_DM_ZERO=m
CONFIG_NETDEVICES=y
# CONFIG_ETHERNET is not set
CONFIG_PHYLIB=y
CONFIG_USB_CATC=m
CONFIG_USB_KAWETH=m
CONFIG_USB_PEGASUS=m
CONFIG_USB_RTL8150=m
CONFIG_USB_RTL8152=m
CONFIG_USB_LAN78XX=m
CONFIG_USB_USBNET=m
CONFIG_USB_NET_CDC_EEM=m
CONFIG_USB_NET_HUAWEI_CDC_NCM=m
CONFIG_USB_NET_CDC_MBIM=m
CONFIG_USB_NET_DM9601=m
CONFIG_USB_NET_SR9700=m
CONFIG_USB_NET_SR9800=m
CONFIG_USB_NET_SMSC75XX=m
CONFIG_USB_NET_SMSC95XX=m
CONFIG_USB_NET_GL620A=m
CONFIG_USB_NET_PLUSB=m
CONFIG_USB_NET_MCS7830=m
CONFIG_USB_NET_RNDIS_HOST=m
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_CX82310_ETH=m
CONFIG_USB_NET_KALMIA=m
CONFIG_USB_NET_QMI_WWAN=m
CONFIG_USB_NET_INT51X1=m
CONFIG_USB_IPHETH=m
CONFIG_USB_SIERRA_NET=m
CONFIG_USB_VL600=m
CONFIG_USB_NET_CH9200=m
CONFIG_USB_NET_AQC111=m
# CONFIG_WLAN_VENDOR_ADMTEK is not set
# CONFIG_WLAN_VENDOR_ATH is not set
# CONFIG_WLAN_VENDOR_ATMEL is not set
# CONFIG_WLAN_VENDOR_BROADCOM is not set
# CONFIG_WLAN_VENDOR_CISCO is not set
# CONFIG_WLAN_VENDOR_INTEL is not set
# CONFIG_WLAN_VENDOR_INTERSIL is not set
CONFIG_MWIFIEX=m
CONFIG_MWIFIEX_SDIO=m
# CONFIG_WLAN_VENDOR_MEDIATEK is not set
# CONFIG_WLAN_VENDOR_RALINK is not set
# CONFIG_WLAN_VENDOR_REALTEK is not set
# CONFIG_WLAN_VENDOR_RSI is not set
# CONFIG_WLAN_VENDOR_ST is not set
# CONFIG_WLAN_VENDOR_TI is not set
# CONFIG_WLAN_VENDOR_ZYDAS is not set
# CONFIG_WLAN_VENDOR_QUANTENNA is not set
CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_ADC=m
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_CROS_EC=y
CONFIG_MOUSE_ELAN_I2C=y
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ATMEL_MXT=m
CONFIG_TOUCHSCREEN_ELAN=y
CONFIG_INPUT_MISC=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_AMBAKMI=y
CONFIG_LEGACY_PTY_COUNT=16
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_DW=y
CONFIG_SERIAL_8250_MT6577=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_AMBA_PL011=y
CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
CONFIG_SERIAL_XILINX_PS_UART=y
CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
CONFIG_SERIAL_FSL_LPUART=y
CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
CONFIG_SERIAL_FSL_LINFLEXUART=y
CONFIG_SERIAL_FSL_LINFLEXUART_CONSOLE=y
CONFIG_SERIAL_DEV_BUS=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_IPMI_HANDLER=m
CONFIG_IPMI_DEVICE_INTERFACE=m
CONFIG_IPMI_SI=m
CONFIG_TCG_TPM=y
CONFIG_TCG_TIS_I2C_INFINEON=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_MUX_PCA954x=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
CONFIG_I2C_GPIO=m
CONFIG_I2C_MT65XX=y
CONFIG_I2C_RK3X=y
CONFIG_I2C_SLAVE=y
CONFIG_SPI=y
CONFIG_SPI_CADENCE_QUADSPI=y
CONFIG_SPI_NXP_FLEXSPI=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_MT65XX=y
CONFIG_SPI_PL022=y
CONFIG_SPI_ROCKCHIP=y
CONFIG_SPI_SPIDEV=y
CONFIG_PINCTRL_SINGLE=y
CONFIG_PINCTRL_MAX77620=y
CONFIG_GPIO_ALTERA=m
CONFIG_GPIO_DWAPB=y
CONFIG_GPIO_MB86S7X=y
CONFIG_GPIO_PL061=y
CONFIG_GPIO_XGENE=y
CONFIG_GPIO_MAX732X=y
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_PCA953X_IRQ=y
CONFIG_GPIO_BD9571MWV=m
CONFIG_GPIO_MAX77620=y
CONFIG_POWER_RESET_BRCMSTB=y
CONFIG_POWER_RESET_XGENE=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_SYSCON_REBOOT_MODE=y
CONFIG_BATTERY_SBS=m
CONFIG_BATTERY_BQ27XXX=y
CONFIG_SENSORS_ARM_SCPI=y
CONFIG_SENSORS_LM90=m
CONFIG_SENSORS_PWM_FAN=m
CONFIG_SENSORS_INA2XX=m
CONFIG_SENSORS_INA3221=m
CONFIG_THERMAL=y
CONFIG_CPU_THERMAL=y
CONFIG_DEVFREQ_THERMAL=y
CONFIG_THERMAL_EMULATION=y
CONFIG_WATCHDOG=y
CONFIG_MEDIATEK_WATCHDOG=y
CONFIG_MFD_BD9571MWV=y
CONFIG_MFD_AXP20X_I2C=y
CONFIG_MFD_HI6421_PMIC=y
CONFIG_MFD_MAX77620=y
CONFIG_MFD_MT6397=y
CONFIG_MFD_RK808=y
CONFIG_MFD_SEC_CORE=y
CONFIG_MFD_ROHM_BD718XX=y
CONFIG_REGULATOR_DEBUG=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_AXP20X=y
CONFIG_REGULATOR_BD718XX=y
CONFIG_REGULATOR_BD9571MWV=y
CONFIG_REGULATOR_DA9211=y
CONFIG_REGULATOR_FAN53555=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_HI6421V530=y
CONFIG_REGULATOR_MAX77620=y
CONFIG_REGULATOR_MAX8973=y
CONFIG_REGULATOR_MT6397=y
CONFIG_REGULATOR_PFUZE100=y
CONFIG_REGULATOR_PWM=y
CONFIG_REGULATOR_RK808=y
CONFIG_REGULATOR_S2MPS11=y
CONFIG_REGULATOR_VCTRL=m
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_ANALOG_TV_SUPPORT=y
CONFIG_MEDIA_DIGITAL_TV_SUPPORT=y
CONFIG_MEDIA_SDR_SUPPORT=y
CONFIG_VIDEO_V4L2_SUBDEV_API=y
CONFIG_MEDIA_USB_SUPPORT=y
CONFIG_USB_VIDEO_CLASS=m
CONFIG_DRM=y
CONFIG_DRM_I2C_CH7006=m
CONFIG_DRM_I2C_SIL164=m
CONFIG_DRM_I2C_NXP_TDA998X=m
CONFIG_DRM_MALI_DISPLAY=m
CONFIG_DRM_PANEL_LVDS=m
CONFIG_DRM_PANEL_SIMPLE=y
CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA=m
CONFIG_DRM_DISPLAY_CONNECTOR=y
CONFIG_DRM_PARADE_PS8640=y
CONFIG_DRM_SII902X=m
CONFIG_DRM_THINE_THC63LVD1024=m
CONFIG_DRM_TI_SN65DSI86=m
CONFIG_DRM_ANALOGIX_ANX78XX=y
CONFIG_DRM_I2C_ADV7511=m
CONFIG_DRM_MEDIATEK=y
CONFIG_DRM_MEDIATEK_HDMI=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_SIMPLE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_BACKLIGHT_LP855X=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_SOC=y
CONFIG_SND_SOC_MT8173=y
CONFIG_SND_SOC_MT8173_RT5650_RT5676=y
CONFIG_I2C_HID=m
CONFIG_USB_CONN_GPIO=y
CONFIG_USB=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_HCD_PLATFORM=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_MTU3=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_DWC3=y
CONFIG_USB_DWC2=y
CONFIG_USB_CHIPIDEA=y
CONFIG_USB_CHIPIDEA_UDC=y
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_ISP1760=y
CONFIG_USB_SERIAL=y
CONFIG_USB_SERIAL_CONSOLE=y
CONFIG_USB_SERIAL_PL2303=y
CONFIG_USB_HSIC_USB3503=y
CONFIG_NOP_USB_XCEIV=y
CONFIG_USB_ULPI=y
CONFIG_USB_GADGET=y
CONFIG_USB_SNP_UDC_PLAT=y
CONFIG_USB_BDC_UDC=y
CONFIG_USB_ETH=m
CONFIG_USB_ETH_EEM=y
CONFIG_TYPEC=m
CONFIG_TYPEC_TCPM=m
CONFIG_TYPEC_FUSB302=m
CONFIG_MMC=y
CONFIG_MMC_BLOCK_MINORS=32
CONFIG_MMC_ARMMMCI=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_OF_ARASAN=y
CONFIG_MMC_SDHCI_CADENCE=y
CONFIG_MMC_SDHCI_F_SDH30=y
CONFIG_MMC_SPI=y
CONFIG_MMC_DW=y
CONFIG_MMC_DW_EXYNOS=y
CONFIG_MMC_DW_HI3798CV200=y
CONFIG_MMC_DW_K3=y
CONFIG_MMC_MTK=y
CONFIG_MMC_SDHCI_XENON=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_PWM=y
CONFIG_LEDS_SYSCON=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_LEDS_TRIGGER_PANIC=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_MAX77686=y
CONFIG_RTC_DRV_RK808=m
CONFIG_RTC_DRV_PCF85363=m
CONFIG_RTC_DRV_RX8581=m
CONFIG_RTC_DRV_S5M=y
CONFIG_RTC_DRV_DS3232=y
CONFIG_RTC_DRV_PCF2127=m
CONFIG_RTC_DRV_PL031=y
CONFIG_DMADEVICES=y
CONFIG_FSL_EDMA=y
CONFIG_MV_XOR_V2=y
CONFIG_PL330_DMA=y
CONFIG_MTK_CQDMA=y
CONFIG_QCOM_HIDMA_MGMT=y
CONFIG_QCOM_HIDMA=y
# CONFIG_VIRTIO_MENU is not set
CONFIG_CHROME_PLATFORMS=y
CONFIG_CROS_EC=y
CONFIG_CROS_EC_I2C=y
CONFIG_CROS_EC_SPI=y
CONFIG_COMMON_CLK_RK808=y
CONFIG_COMMON_CLK_SCPI=y
CONFIG_COMMON_CLK_CS2000_CP=y
CONFIG_COMMON_CLK_S2MPS11=y
CONFIG_COMMON_CLK_XGENE=y
CONFIG_COMMON_CLK_PWM=y
CONFIG_COMMON_CLK_VC5=y
CONFIG_COMMON_CLK_MT6797_MMSYS=y
CONFIG_COMMON_CLK_MT6797_IMGSYS=y
CONFIG_COMMON_CLK_MT6797_VDECSYS=y
CONFIG_COMMON_CLK_MT6797_VENCSYS=y
CONFIG_HWSPINLOCK=y
CONFIG_ARM_MHU=y
CONFIG_PLATFORM_MHU=y
CONFIG_ARM_SMMU=y
CONFIG_ARM_SMMU_V3=y
CONFIG_MTK_IOMMU=y
CONFIG_REMOTEPROC=y
CONFIG_MTK_CMDQ=y
CONFIG_MTK_PMIC_WRAP=y
CONFIG_EXTCON_USB_GPIO=y
CONFIG_IIO=y
CONFIG_MAX9611=m
CONFIG_SENSORS_ISL29018=m
CONFIG_MPL3115=m
CONFIG_PWM=y
CONFIG_PWM_MTK_DISP=y
CONFIG_PWM_MEDIATEK=y
CONFIG_PHY_XGENE=y
CONFIG_PHY_FSL_IMX8MQ_USB=y
CONFIG_PHY_MTK_TPHY=y
CONFIG_PHY_QCOM_USB_HS=y
CONFIG_PHY_SAMSUNG_USB2=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_FANOTIFY=y
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y
CONFIG_QUOTA=y
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=m
CONFIG_CUSE=m
CONFIG_OVERLAY_FS=y
CONFIG_OVERLAY_FS_INDEX=y
CONFIG_OVERLAY_FS_XINO_AUTO=y
CONFIG_OVERLAY_FS_METACOPY=y
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_HUGETLBFS=y
CONFIG_CONFIGFS_FS=y
CONFIG_PSTORE=y
CONFIG_NFS_FS=m
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=m
CONFIG_NFS_SWAP=y
CONFIG_CIFS=m
CONFIG_CIFS_STATS2=y
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ISO8859_1=y
CONFIG_SECURITY=y
CONFIG_CRYPTO_CRYPTD=y
CONFIG_CRYPTO_DH=m
CONFIG_CRYPTO_ECDH=m
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_ECHAINIV=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_XXHASH=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA3=m
CONFIG_CRYPTO_DES=m
CONFIG_CRYPTO_ANSI_CPRNG=y
CONFIG_CRYPTO_DEV_CCREE=m
CONFIG_PACKING=y
CONFIG_INDIRECT_PIO=y
CONFIG_CRC_CCITT=m
CONFIG_CRC_T10DIF=y
CONFIG_LIBCRC32C=m
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=32
CONFIG_IRQ_POLL=y
CONFIG_PRINTK_TIME=y
CONFIG_DEBUG_INFO=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_KERNEL=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_PREEMPT is not set
CONFIG_STACKTRACE=y
# CONFIG_FTRACE is not set
# CONFIG_STRICT_DEVMEM is not set
+56
View File
@@ -0,0 +1,56 @@
Mediatek MT8173 aka Chromebook Elm
==================================
This file describes booting the Chromebook from an SD card containing
Buildroot kernel and rootfs, using the original bootloader. This is
the least invasive way to get Buildroot onto the devices and a good
starting point.
The bootloader will only boot a kernel from a GPT partition marked
bootable with cgpt tool from vboot-utils package.
The kernel image must be signed using futility from the same package.
The signing part is done by sign.sh script in this directory.
It does not really matter where rootfs is as long as the kernel is able
to find it, but this particular configuration assumes the kernel is on
partition 1 and rootfs is on partition 2 of the SD card.
Make sure to check kernel.args if you change this.
Making the boot media
---------------------
Start by configuring and building the images.
make chromebook_elm_defconfig
make menuconfig # if necessary
make
The important files are:
uImage.kpart (kernel and device tree, signed)
rootfs.tar
bootsd.img (SD card image containing both kernel and rootfs)
Write the image directly to some SD card.
WARNING: make sure there is nothing important on that card,
and double-check the device name!
SD=/dev/mmcblk1 # may be /dev/sdX on some hosts
dd if=output/images/bootsd.img of=$SD
Switching to developer mode and booting from SD
-----------------------------------------------
Power Chromebook down, then power it up while holding Esc+F3.
BEWARE: switching to developer mode deletes all user data.
Create backups if you need them.
While in developer mode, Chromebook will boot into a white screen saying
"OS verification is off".
Press Ctrl-D at this screen to boot Chromium OS from eMMC.
Press Ctrl-U at this screen to boot from SD (or USB)
Press Power to power it off.
Do NOT press Space unless you mean it.
This will switch it back to normal mode.
The is no way to get rid of the white screen without re-flashing the bootloader.
+41
View File
@@ -0,0 +1,41 @@
#!/bin/sh
# This script creates u-boot FIT image containing the kernel and the DT,
# then signs it using futility from vboot-utils.
# The resulting file is called uImage.kpart.
BOARD_DIR=$(dirname $0)/${BOARD_NAME}
mkimage=$HOST_DIR/bin/mkimage
futility=$HOST_DIR/bin/futility
devkeys=$HOST_DIR/share/vboot/devkeys
run() { echo "$@"; "$@"; }
die() { echo "$@" >&2; exit 1; }
test -f $BINARIES_DIR/Image || \
die "No kernel image found"
test -x $mkimage || \
die "No mkimage found (host-uboot-tools has not been built?)"
test -x $futility || \
die "No futility found (host-vboot-utils has not been built?)"
# kernel.its references Image and mt8173-elm.dtb, and all three
# files must be in current directory for mkimage.
run cp $BOARD_DIR/kernel.its $BINARIES_DIR/kernel.its || exit 1
echo "# entering $BINARIES_DIR for the next command"
(cd $BINARIES_DIR && run $mkimage -f kernel.its uImage.itb) || exit 1
# futility requires non-empty file to be supplied with --bootloader
# even if it does not make sense for the target platform.
echo > $BINARIES_DIR/dummy.txt
run $futility vbutil_kernel \
--keyblock $devkeys/kernel.keyblock \
--signprivate $devkeys/kernel_data_key.vbprivk \
--arch aarch64 \
--version 1 \
--config $BOARD_DIR/kernel.args \
--vmlinuz $BINARIES_DIR/uImage.itb \
--bootloader $BINARIES_DIR/dummy.txt \
--pack $BINARIES_DIR/uImage.kpart || exit 1
rm -f $BINARIES_DIR/kernel.its $BINARIES_DIR/dummy.txt