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samsung_chromebook_plus_xe513c24 [2024/02/02 01:46] – created austinsamsung_chromebook_plus_xe513c24 [2024/09/22 22:08] (current) – external edit 127.0.0.1
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 ====== Samsung Chromebook Plus XE513C24 ====== ====== Samsung Chromebook Plus XE513C24 ======
 +
 +{{ :chromebookplus.jpg?400 |}}
  
 === Developer Mode === === Developer Mode ===
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 === First Attempt Gentoo SD Image === === First Attempt Gentoo SD Image ===
  
 +Note: I'm doing the build from my Orange Pi 800 with the same RK3399 so no cross compile environment is required.
 +
 +== Preparing SD Card ==
 +
 +Install the required tools onto the build system:
 +<code>
 +emerge --ask dev-embedded/u-boot-tools sys-apps/dtc sys-block/parted sys-boot/vboot-utils
 +</code>
 +
 +Partion the sd card.
 +<code>
 +root #parted /dev/sdc mklabel gpt
 +root #parted -a optimal /dev/sdc unit mib mkpart Kernel 1 65
 +root #parted -a optimal /dev/sdc unit mib mkpart Root 65 100%
 +</code>
 +
 +Depthcharge requires some specific parameters to be set. These signal the bootloader the presence of a valid kernel partition:
 +
 +<code>
 +root #cgpt add -i 1 -t kernel -S 1 -T 5 -P 15 /dev/sdc
 +</code>
 +
 +Create a filesystem on the root partition and mount it:
 +
 +<code>
 +root #mkfs.ext4 /dev/sdc2
 +root #mount /dev/sdc2 /mnt/sdcard
 +</code>
 +
 +Grabbed latest arm64 stage3 and extracted to /mnt/sdcard: [[https://distfiles.gentoo.org/releases/arm64/autobuilds/20240128T234815Z/stage3-arm64-openrc-20240128T234815Z.tar.xz]]
 +
 +Also grabbed the latest portage snapshot as it doesn't appear its in the stage 3 and extracted to /var/db/repos/gentoo: [[https://distfiles.gentoo.org/snapshots/portage-latest.tar.bz2]]
 +
 +I copied my make.conf from my Orange Pi 800 as they both have the same rk3399 SOC.
 +<code>
 +# These settings were set by the catalyst build script that automatically
 +# built this stage.
 +# Please consult /usr/share/portage/config/make.conf.example for a more
 +# detailed example.
 +COMMON_FLAGS="-march=armv8-a+crc+crypto -mtune=cortex-a72.cortex-a53 -mfix-cortex-a53-835769 -mfix-cortex-a53-843419"
 +CFLAGS="${COMMON_FLAGS}"
 +CXXFLAGS="${COMMON_FLAGS}"
 +FCFLAGS="${COMMON_FLAGS}"
 +FFLAGS="${COMMON_FLAGS}"
 +
 +# WARNING: Changing your CHOST is not something that should be done lightly.
 +# Please consult https://wiki.gentoo.org/wiki/Changing_the_CHOST_variable before changing.
 +CHOST="aarch64-unknown-linux-gnu"
 +
 +# NOTE: This stage was built with the bindist Use flag enabled
 +
 +# This sets the language of build output to English.
 +# Please keep this setting intact when reporting bugs.
 +LC_MESSAGES=C.utf8
 +USE="-X gpm alsa -udev pulseaudio"
 +ACCEPT_LICENSE="-* @FREE @BINARY-REDISTRIBUTABLE"
 +LLVM_TARGETS="AArch64"
 +VIDEO_CARDS="panfrost"
 +</code>
 +
 +== Getting ready to Chroot ==
 +Copy over resolv.conf:
 +<code>
 +cp --dereference /etc/resolv.conf /mnt/sdcard/etc/
 +</code>
 +
 +Setup binds:
 +<code>
 +root #mount --types proc /proc /mnt/sdcard/proc
 +root #mount --rbind /sys /mnt/sdcard/sys
 +root #mount --make-rslave /mnt/sdcard/sys
 +root #mount --rbind /dev /mnt/sdcard/dev
 +root #mount --make-rslave /mnt/sdcard/dev
 +root #mount --bind /run /mnt/sdcard/run
 +root #mount --make-slave /mnt/sdcard/run
 +</code>
 +
 +Chroot in:
 +<code>
 +root #chroot /mnt/sdcard /bin/bash
 +root #source /etc/profile
 +root #export PS1="(chroot) ${PS1}"
 +</code>
 +
 +== Get sources and configure kernel ==
 +<code>
 +emerge --ask gentoo-sources
 +</code>
 +
 +I stole the config from [[https://git.alpinelinux.org/aports/plain/testing/linux-gru/config]]
 +I edited the config text and added the gentoo specific options required:
 +<code>
 +< # Linux/arm64 6.6.2 Kernel Configuration
 +---
 +> # Linux/arm64 6.6.13-gentoo Kernel Configuration
 +5c5
 +< CONFIG_CC_VERSION_TEXT="gcc (Alpine 13.2.1_git20231014) 13.2.1 20231014"
 +---
 +> CONFIG_CC_VERSION_TEXT="gcc (Gentoo 13.2.1_p20240113-r1 p12) 13.2.1 20240113"
 +7294a7295,7312
 +> 
 +> #
 +> # Gentoo Linux
 +> #
 +> CONFIG_GENTOO_LINUX=y
 +> CONFIG_GENTOO_LINUX_UDEV=y
 +> CONFIG_GENTOO_LINUX_PORTAGE=y
 +> 
 +> #
 +> # Support for init systems, system and service managers
 +> #
 +> CONFIG_GENTOO_LINUX_INIT_SCRIPT=y
 +> # CONFIG_GENTOO_LINUX_INIT_SYSTEMD is not set
 +> # end of Support for init systems, system and service managers
 +> 
 +> # CONFIG_GENTOO_KERNEL_SELF_PROTECTION is not set
 +> CONFIG_GENTOO_PRINT_FIRMWARE_INFO=y
 +> # end of Gentoo Linux
 +</code>
 +
 +I manually applied both patch files found here: [[https://git.alpinelinux.org/aports/tree/testing/linux-gru/]]
 +
 +Compiling the kernel:
 +<code>
 +make
 +make dtbs
 +</code>
 +
 +Set the root password with passwd.
 +
 +Set the timezone:
 +<code>
 +root #echo "America/Detroit" > /etc/timezone
 +root #emerge --config sys-libs/timezone-data
 +</code>
 +
 +Setup locale:
 +<code>
 +vim /etc/locale.gen
 +locale-gen
 +eselect locale list
 +eselect locale set
 +</code>
 +
 +Install some system tools and firmware (required for wireless):
 +<code>
 +emerge --ask linux-firmware wpa_supplicant dhcpcd syslog-ng cronie chrony e2fsprogs
 +rc-update add dhcpcd default
 +rc-update add syslog-ng default
 +rc-update add cronie default
 +rc-update add sshd default
 +rc-update add chronyd default
 +</code>
 +
 +Configure hostname:
 +<code>
 +echo "hostname" > /etc/hostname
 +vim /etc/hosts
 +127.0.0.1     hostname.localdomain.lan hostname localhost
 +::1           hostname.localdomain.lan hostname localhost  
 +</code>
 +
 +Set clock="local" if your hardware clock is localtime
 +
 +Setup a normal user:
 +<code>
 +useradd -m -G users,wheel,audio -s /bin/bash johndoe
 +passwd johndoe
 +</code>
 +
 +Exit the chroot.
 +
 +Create a swapfile (ensure you've exited the chroot):
 +<code>
 +fallocate -l 4G /mnt/sdcard/swapfile
 +mkswap /mnt/sdcard/swapfile
 +</code>
 +
 +Use blkid to get UUID of the sdcard root partition.
 +Configure fstab:
 +<code>
 +vim /mnt/sdcard/etc/fstab
 +UUID="c47efd86-d6df-4c76-a4e9-2e8207d28710"     /       ext4    defaults        0 1
 +/swapfile       swap    swap    defaults 0 0
 +</code>
 +
 +Create /mnt/sdcard/usr/src/linux/gentoo.its:
 +<code>
 +/dts-v1/;
 +
 +/ {
 +    description = "Chrome OS kernel image with one or more FDT blobs";
 +    images {
 +        kernel-1{
 +            description = "kernel";
 +            data = /incbin/("arch/arm64/boot/Image");
 +            type = "kernel_noload";
 +            arch = "arm64";
 +            os = "linux";
 +            compression = "none";
 +            load = <0>;
 +            entry = <0>;
 +        };
 +        fdt-1{
 +            description = "rk3399-gru-kevin.dtb";
 +            data = /incbin/("arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dtb");
 +            type = "flat_dt";
 +            arch = "arm64";
 +            compression = "none";
 +            hash-1{
 +                algo = "sha1";
 +            };
 +        };
 +    };
 +    configurations {
 +        default = "conf-1";
 +        conf-1{
 +            kernel = "kernel-1";
 +            fdt = "fdt-1";
 +        };
 +    };
 +};
 +</code>
 +
 +Package and sign the image and write it to boot partition:
 +<code>
 +lucy /mnt/sdcard/usr/src/linux # mkimage -f gentoo.its gentoo.itb
 +FIT description: Chrome OS kernel image with one or more FDT blobs
 +Created:         Fri Feb  2 08:46:34 2024
 + Image 0 (kernel-1)
 +  Description:  kernel
 +  Created:      Fri Feb  2 08:46:34 2024
 +  Type:         Kernel Image (no loading done)
 +  Compression:  uncompressed
 +  Data Size:    17617408 Bytes = 17204.50 KiB = 16.80 MiB
 + Image 1 (fdt-1)
 +  Description:  rk3399-gru-kevin.dtb
 +  Created:      Fri Feb  2 08:46:34 2024
 +  Type:         Flat Device Tree
 +  Compression:  uncompressed
 +  Data Size:    69134 Bytes = 67.51 KiB = 0.07 MiB
 +  Architecture: AArch64
 +  Hash algo:    sha1
 +  Hash value:   35021c41658ce3f8b86f5fcfe7ca1b0a4fd3ccd2
 + Default Configuration: 'conf-1'
 + Configuration 0 (conf-1)
 +  Description:  unavailable
 +  Kernel:       kernel-1
 +  FDT:          fdt-1
 +lucy /mnt/sdcard/usr/src/linux # vim kernel.flags
 +lucy /mnt/sdcard/usr/src/linux # cat kernel.flags 
 +console=tty1 root=/dev/mmcblk1p2  rootfstype=ext4 rootwait rw
 +lucy /mnt/sdcard/usr/src/linux # sync
 +lucy /mnt/sdcard/usr/src/linux # futility --debug vbutil_kernel --arch arm --version 1 --keyblock /usr/share/vboot/devkeys/kernel.keyblock --signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk --bootloader kernel.flags --config kernel.flags --vmlinuz gentoo.itb --pack vmlinuz.signed
 +DEBUG: run_command: "vbutil_kernel" ...
 +DEBUG: run_command:   argv[0] = "vbutil_kernel"
 +DEBUG: run_command:   argv[1] = "--arch"
 +DEBUG: run_command:   argv[2] = "arm"
 +DEBUG: run_command:   argv[3] = "--version"
 +DEBUG: run_command:   argv[4] = "1"
 +DEBUG: run_command:   argv[5] = "--keyblock"
 +DEBUG: run_command:   argv[6] = "/usr/share/vboot/devkeys/kernel.keyblock"
 +DEBUG: run_command:   argv[7] = "--signprivate"
 +DEBUG: run_command:   argv[8] = "/usr/share/vboot/devkeys/kernel_data_key.vbprivk"
 +DEBUG: run_command:   argv[9] = "--bootloader"
 +DEBUG: run_command:   argv[10] = "kernel.flags"
 +DEBUG: run_command:   argv[11] = "--config"
 +DEBUG: run_command:   argv[12] = "kernel.flags"
 +DEBUG: run_command:   argv[13] = "--vmlinuz"
 +DEBUG: run_command:   argv[14] = "gentoo.itb"
 +DEBUG: run_command:   argv[15] = "--pack"
 +DEBUG: run_command:   argv[16] = "vmlinuz.signed"
 +DEBUG: do_vbutil_kernel: Reading kernel.flags
 +DEBUG: ReadConfigFile:  config file size=0x38
 +DEBUG: do_vbutil_kernel: Reading kernel.flags
 +DEBUG: do_vbutil_kernel:  bootloader file size=0x38
 +DEBUG: do_vbutil_kernel: Reading gentoo.itb
 +DEBUG: do_vbutil_kernel:  vmlinuz file size=0x10de6a9
 +DEBUG: CreateKernelBlob: g_kernel_blob_size  0x10e2000
 +DEBUG: CreateKernelBlob: g_kernel_size       0x10de6a9 ofs 0x0
 +DEBUG: CreateKernelBlob: g_config_size       0x1000 ofs 0x10df000
 +DEBUG: CreateKernelBlob: g_param_size        0x1000 ofs 0x10e0000
 +DEBUG: CreateKernelBlob: g_bootloader_size   0x1000 ofs 0x10e1000
 +DEBUG: CreateKernelBlob: g_ondisk_bootloader_addr   0x11e1000
 +DEBUG: CreateKernelBlob: end of kern_blob at kern_blob+0x10e2000
 +DEBUG: PickApartVmlinuz:  kernel32_start=0x0
 +DEBUG: PickApartVmlinuz:  kernel32_size=0x10de6a9
 +DEBUG: do_vbutil_kernel: kblob_size = 0x10e2000
 +DEBUG: do_vbutil_kernel: vblock_size = 0x10000
 +DEBUG: WriteSomeParts: writing vmlinuz.signed with 0x10000, 0x10e2000
 +lucy /mnt/sdcard/usr/src/linux # dd if=vmlinuz.signed of=/dev/sdc1
 +34704+0 records in
 +34704+0 records out
 +17768448 bytes (18 MB, 17 MiB) copied, 3.95567 s, 4.5 MB/s
 +</code>
 +
 +Umount everything you can eject the sd card and install it in the chromebook.
 +Use Ctrl+U to boot from external media.
 +
 +After reboot I noticed it was trying to spawn a serial session so I commented out f0 at the bottom of /etc/inittab.
 +
 +I also forgot to build the kernel modules...
 +<code>
 +cd /usr/src/linux
 +make modules_install
 +reboot
 +</code>
 +
 +Then I had wlp1s0 to configure the normal way.
 +
 +=== Tweaks ===
 +I didn't want my screen to go black in X with a timeout.  I have my custom UI but also fluxbox installed.   To disable the screen shutting off edit /etc/X11/xorg.conf:
 +<code>
 +Section "ServerFlags"
 +     Option "BlankTime" "0"
 +EndSection
 +</code>
 +
 +I kept bumping the power button and shutting of the machine due to a default settings in elogind.  I edited /etc/elogind/logind.conf:
 +<code>
 +[Login]
 +HandlePowerKey=ignore
 +</code>
 +
 +=== Conky ===
 +<code>
 +-- Conky, a system monitor https://github.com/brndnmtthws/conky
 +--
 +-- This configuration file is Lua code. You can write code in here, and it will
 +-- execute when Conky loads. You can use it to generate your own advanced
 +-- configurations.
 +--
 +-- Try this (remove the `--`):
 +--
 +--   print("Loading Conky config")
 +--
 +-- For more on Lua, see:
 +-- https://www.lua.org/pil/contents.html
 +
 +conky.config = {
 +    alignment = "top_left",
 +    use_xft = true,
 +    font = 'GE Inspira:size=16',
 +    xftalpha = 0.8,
 +    text_buffer_size = 2048,
 +    max_text_width = 0,
 +    override_utf8_locale = true,
 +    uppercase = false,
 +    no_buffers = true,
 +    short_units = true,
 +    format_human_readable = true,
 +
 +    update_interval = 1,
 +    total_run_times = 0,
 +
 +    own_window = true,
 +    own_window_transparent = false,
 +    own_window_type = 'desktop',
 +    own_window_hints = 'undecorated,below,sticky,skip_taskbar,skip_pager',
 +        own_window_argb_visual = true,
 +        own_window_argb_value = 128,
 +    background = true,
 +    use_spacer = 'none',
 +
 +    double_buffer = true,
 +    minimum_width = 215, minimum_height = 215,
 +
 +    draw_shades = false,
 +    default_shade_color = '#000000',
 +
 +    draw_outline = false,
 +    default_outline_color = '#000000',
 +
 +    default_color = 'FFFFFF',
 +    color0 = 'FFFFFF',
 +    color1 = 'FFA300',
 +
 +    draw_borders = false,
 +    stippled_borders = 0,
 +    border_inner_margin = 10,
 +    border_outer_margin = 0,
 +    border_width = 1,
 +    draw_graph_borders = false,--no
 +
 +    gap_x = 50,
 +    gap_y = 50,
 +
 +    imlib_cache_size = 0,
 +}
 +
 +conky.text = [[
 +${color grey}Info:$color ${scroll 32 Conky $conky_version - $sysname $nodename $kernel $machine}
 +$hr
 +${color grey}Uptime:$color $uptime
 +${color grey}Frequency (in MHz):$color $freq
 +${color grey}Frequency (in GHz):$color $freq_g
 +${color grey}RAM Usage:$color $mem/$memmax - $memperc% ${membar 4}
 +${color grey}Swap Usage:$color $swap/$swapmax - $swapperc% ${swapbar 4}
 +${color grey}CPU Usage:$color $cpu% ${cpubar 4}
 +${color grey}Processes:$color $processes  ${color grey}Running:$color $running_processes
 +$hr
 +${color grey}File systems:
 + / $color${fs_used /}/${fs_size /} ${fs_bar 6 /}
 +${color grey}Networking:
 +Up:$color ${upspeed wlp1s0} ${color grey} - Down:$color ${downspeed wlp1s0}
 +${color grey}Battery:${color} ${battery_percent sbs-9-000b} ${alignr}${battery_bar 8, 250 sbs-9-000b}
 +$hr
 +${color grey}Name              PID     CPU%   MEM%
 +${color lightgrey} ${top name 1} ${top pid 1} ${top cpu 1} ${top mem 1}
 +${color lightgrey} ${top name 2} ${top pid 2} ${top cpu 2} ${top mem 2}
 +${color lightgrey} ${top name 3} ${top pid 3} ${top cpu 3} ${top mem 3}
 +${color lightgrey} ${top name 4} ${top pid 4} ${top cpu 4} ${top mem 4}
 +#
 +#REFRESH LOCATION & WEATHER INFO CACHE
 +${execi 600 curl -so ~/.cache/WeatherData 'https://api.openweathermap.org/data/2.5/onecall?units=imperial&lat=46.4855&lon=-88.8940&exclude=minutely,hourly&APPID=a6f8bedf50667be2d3764422a37077d2'}
 +
 +#
 +#REFRESH ICON CACHE
 +${execi 600 sleep 2 && jq -r '.current.weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/WeatherNow.png}\
 +${execi 600 sleep 2 && jq -r '.daily[0].weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/Weather0.png}\
 +${execi 600 sleep 2 && jq -r '.daily[1].weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/Weather1.png}\
 +${execi 600 sleep 2 && jq -r '.daily[2].weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/Weather2.png}\
 +${execi 600 sleep 2 && jq -r '.daily[3].weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/Weather3.png}\
 +${execi 600 sleep 2 && jq -r '.daily[4].weather[0].icon' ~/.cache/WeatherData | xargs printf "http://openweathermap.org/img/wn/%s@2x.png" | xargs curl -so ~/.cache/Weather4.png}
 +#
 +#WEATHER NOW
 +${voffset -40}${color1}Kenton, MI
 +${color0}${execi 1 jq -r '.current.temp' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}° ${image ~/.cache/WeatherNow.png -s 70x70 -p 160,570}
 +
 +#WEATHER TODAY                                                                                                            
 +${color1}Today${goto 100}${color0}${execi 1 jq -r '.daily[0].temp.min' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°/ ${execi 1 jq -r '.daily[0].temp.max' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°${image ~/.cache/Weather0.png -s 30x30 -p 180, 635}
 +#
 +#WEATHER +1 DAY
 +${color1}${execi 1 jq -r '.daily[1].dt' ~/.cache/WeatherData |awk '
 +{print "@" $1}' |xargs date +%a --date}${goto 100}${color0}${execi 1 jq -r '.daily[1].temp.min' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°/ ${execi 1 jq -r '.daily[1].temp.max' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°${image ~/.cache/Weather1.png -s 30x30 -p 180,658}
 +#
 +#WEATHER +2 DAYS
 +${color1}${execi 1 jq -r '.daily[2].dt' ~/.cache/WeatherData |awk '
 +{print "@" $1}' |xargs date +%a --date}${goto 100}${color0}${execi 1 jq -r '.daily[2].temp.min' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°/ ${execi 1 jq -r '.daily[2].temp.max' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°${image ~/.cache/Weather2.png -s 30x30 -p 180,685}
 +#
 +#WEATHER +3 DAYS
 +${color1}${execi 1 jq -r '.daily[3].dt' ~/.cache/WeatherData |awk '
 +{print "@" $1}' |xargs date +%a --date}${goto 100}${color0}${execi 1 jq -r '.daily[3].temp.min' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°/ ${execi 1 jq -r '.daily[3].temp.max' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°${image ~/.cache/Weather3.png -s 30x30 -p 180,710}
 +#
 +#WEATHER +4 DAYS
 +${color1}${execi 1 jq -r '.daily[4].dt' ~/.cache/WeatherData |awk '
 +{print "@" $1}' |xargs date +%a --date}${goto 100}${color0}${execi 1 jq -r '.daily[4].temp.min' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°/ ${execi 1 jq -r '.daily[4].temp.max' ~/.cache/WeatherData |awk '{print int($1+0.5)}'}°${image ~/.cache/Weather3.png -s 30x30 -p 180,735}
 +]]
 +                                                                                                                      
 +</code>
 +
 +{{ :conky.png?400 |}}
 +
 +=== Docker ===
 +
 +When attempted to emerge docker I got errors about circular deps with dev-lang/go.  I also needed to recompile binutils with gold use flag.
 +<code>
 +sys-devel/binutils gold
 +</code>
 +Then I emerged dev-lang/go by itself.
 +<code>
 +emerge --ask devlang/go
 +</code>
 +Finally I emerged docker.
 +<code>
 +emerge --ask app-containers/docker
 +</code>
 +
 +After that I found I couldn't start a container.  I was missing some required kernel CONFIG options.  
  
 +  * I ran this [[https://github.com/moby/moby/blob/master/contrib/check-config.sh|script]] to figure out what needed to be changed.
 +  * Then compile the kernel and modules as normal.
 +  * Follow the steps above to recreate the image for p1.
 +  * dd the image, ensure to take in account that the device is now probably /dev/mmcblk1
  
 === Refrences === === Refrences ===
samsung_chromebook_plus_xe513c24.1706838398.txt.gz · Last modified: 2024/09/22 22:08 (external edit)

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