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--- samsung_chromebook_plus_xe513c24 [2024/02/02 02:02] – austin
+++ samsung_chromebook_plus_xe513c24 [2024/09/22 22:08] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Samsung Chromebook Plus XE513C24 ======
+{{ :chromebookplus.jpg?400 |}}
 === Developer Mode ===
@@ Line 26: / Line 28: @@
 == 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
@@ Line 43: / Line 51: @@
 root #mkfs.ext4 /dev/sdc2
 root #mount /dev/sdc2 /mnt/sdcard
-</mnt>
+</code>
 Grabbed latest arm64 stage3 and extracted to /mnt/sdcard: [[https://distfiles.gentoo.org/releases/arm64/autobuilds/20240128T234815Z/stage3-arm64-openrc-20240128T234815Z.tar.xz]]
@@ Line 95: / Line 103: @@
 Chroot in:
 <code>
-root #chroot /mnt/gentoo /bin/bash
+root #chroot /mnt/sdcard /bin/bash
 root #source /etc/profile
 root #export PS1="(chroot) ${PS1}"
@@ Line 135: / Line 143: @@
 > # 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:
@@ Line 142: / Line 152: @@
 </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
+.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
++0 records in
++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
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