[Buildroot] [PATCH v4 3/3] board/canaan/k210-soc: use tinyinit as Linux init process

[Dario Binacchi <dario.binacchi@amarulasolutions.com>]

The initialization script provided by the tinyinit package is the same
as the one contained in board/canaan/k210-soc/rootfs_overlay/sbin/init
except for the Linux logo, which has been removed. The patch reworks
the configurations that use this overlay directory by replacing the
initialization process contained within it with the one provided by
the tinyinit package.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---
Changes v3 -> v4:
 - Replace BR2_INIT_NONE=y and BR2_PACKAGE_TINYINIT=y with
   BR2_INIT_TINYINIT=y in stm32f746_disco_sd_defconfig

Changes v2 -> v3:
 - Replace BR2_INIT_TINYINIT=y with BR2_INIT_NONE=y and
   BR2_PACKAGE_TINYINIT=y in stm32f746_disco_sd_defconfig.

Changes v1 -> v2:
 - Remove the logo management.
 - Update the commit message.

 .checkpackageignore                           |  1 -
 board/canaan/k210-soc/rootfs_overlay/init     |  1 -
 .../canaan/k210-soc/rootfs_overlay/sbin/init  | 41 -------------------
 configs/canaan_kd233_defconfig                |  3 +-
 configs/sipeed_maix_bit_defconfig             |  3 +-
 configs/sipeed_maix_bit_sdcard_defconfig      |  3 +-
 configs/sipeed_maix_dock_defconfig            |  3 +-
 configs/sipeed_maix_dock_sdcard_defconfig     |  3 +-
 configs/sipeed_maix_go_defconfig              |  3 +-
 configs/sipeed_maix_go_sdcard_defconfig       |  3 +-
 configs/sipeed_maixduino_defconfig            |  3 +-
 configs/sipeed_maixduino_sdcard_defconfig     |  3 +-
 12 files changed, 9 insertions(+), 61 deletions(-)
 delete mode 120000 board/canaan/k210-soc/rootfs_overlay/init
 delete mode 100755 board/canaan/k210-soc/rootfs_overlay/sbin/init

diff --git a/.checkpackageignore b/.checkpackageignore
index 4cfc202153c7..849bb2a55e47 100644
--- a/.checkpackageignore
+++ b/.checkpackageignore
@@ -22,7 +22,6 @@ board/bsh/imx8mn-bsh-smm-s2-pro/post-image.sh Shellcheck
 board/bsh/imx8mn-bsh-smm-s2/flash.sh Shellcheck lib_shellscript.EmptyLastLine
 board/bsh/imx8mn-bsh-smm-s2/post-build.sh Shellcheck
 board/canaan/k210-soc/post-build.sh Shellcheck
-board/canaan/k210-soc/rootfs_overlay/sbin/init Shellcheck
 board/chromebook/elm/sign.sh Shellcheck
 board/chromebook/mksd.sh Shellcheck
 board/chromebook/snow/sign.sh Shellcheck
diff --git a/board/canaan/k210-soc/rootfs_overlay/init b/board/canaan/k210-soc/rootfs_overlay/init
deleted file mode 120000
index a0b71977c06f..000000000000
--- a/board/canaan/k210-soc/rootfs_overlay/init
+++ /dev/null
@@ -1 +0,0 @@
-/sbin/init
\ No newline at end of file
diff --git a/board/canaan/k210-soc/rootfs_overlay/sbin/init b/board/canaan/k210-soc/rootfs_overlay/sbin/init
deleted file mode 100755
index d4bf53d45231..000000000000
--- a/board/canaan/k210-soc/rootfs_overlay/sbin/init
+++ /dev/null
@@ -1,41 +0,0 @@
-#!/bin/sh
-
-# This script replaces the default busybox init process to avoid having that
-# process staying alive and sleeping in the background, (uselessly) consuming
-# precious memory.
-
-# Mount procfs and sysfs
-/bin/mount -t proc proc /proc
-/bin/mount -t sysfs sysfs /sys
-
-# When the kernel is directly booted, devtmpfs is not automatically mounted.
-# Manually mount it if needed.
-devmnt=$(mount | grep -c devtmpfs)
-if [ ${devmnt} -eq 0 ]; then
-    /bin/mount -t devtmpfs devtmpfs /dev
-fi
-
-# Use the /dev/console device node from devtmpfs if possible to not
-# confuse glibc's ttyname_r().
-# This may fail (E.G. booted with console=), and errors from exec will
-# terminate the shell, so use a subshell for the test
-if (exec 0</dev/console) 2>/dev/null; then
-    exec 0</dev/console
-    exec 1>/dev/console
-    exec 2>/dev/console
-fi
-
-# Clear memory to reduce page fragmentation
-echo 3 > /proc/sys/vm/drop_caches
-
-# Print a fun logo :)
-echo "          __  _"
-echo "         / / (_) ____   _   _ __  __"
-echo "        / /  | ||  _ \\ | | | |\\ \\/ /"
-echo "       / /___| || | | || |_| | >  < "
-echo "      /_____/|_||_| |_| \\____|/_/\\_\\"
-echo "    64-bits RISC-V Kendryte K210 NOMMU"
-echo ""
-
-# Finally, let's start an interactive shell
-exec /bin/sh
diff --git a/configs/canaan_kd233_defconfig b/configs/canaan_kd233_defconfig
index 832f8363a75c..27624aff4a9a 100644
--- a/configs/canaan_kd233_defconfig
+++ b/configs/canaan_kd233_defconfig
@@ -32,6 +32,5 @@ BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="board/canaan/k210-soc/busybox-tiny.co
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
diff --git a/configs/sipeed_maix_bit_defconfig b/configs/sipeed_maix_bit_defconfig
index 238e082a3d40..5119307330de 100644
--- a/configs/sipeed_maix_bit_defconfig
+++ b/configs/sipeed_maix_bit_defconfig
@@ -32,6 +32,5 @@ BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="board/canaan/k210-soc/busybox-tiny.co
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
diff --git a/configs/sipeed_maix_bit_sdcard_defconfig b/configs/sipeed_maix_bit_sdcard_defconfig
index 28aa143583bd..4047da159221 100644
--- a/configs/sipeed_maix_bit_sdcard_defconfig
+++ b/configs/sipeed_maix_bit_sdcard_defconfig
@@ -33,10 +33,9 @@ BR2_LINUX_KERNEL_INTREE_DTS_NAME="canaan/sipeed_maix_bit"
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="64M"
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/canaan/k210-soc/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/canaan/k210-soc/genimage.cfg"
diff --git a/configs/sipeed_maix_dock_defconfig b/configs/sipeed_maix_dock_defconfig
index ee1b0d837284..0caa4d4e3ae3 100644
--- a/configs/sipeed_maix_dock_defconfig
+++ b/configs/sipeed_maix_dock_defconfig
@@ -32,6 +32,5 @@ BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="board/canaan/k210-soc/busybox-tiny.co
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
diff --git a/configs/sipeed_maix_dock_sdcard_defconfig b/configs/sipeed_maix_dock_sdcard_defconfig
index 41a062c7a179..ecb640a47bb2 100644
--- a/configs/sipeed_maix_dock_sdcard_defconfig
+++ b/configs/sipeed_maix_dock_sdcard_defconfig
@@ -33,10 +33,9 @@ BR2_LINUX_KERNEL_INTREE_DTS_NAME="canaan/sipeed_maix_dock"
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="64M"
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/canaan/k210-soc/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/canaan/k210-soc/genimage.cfg"
diff --git a/configs/sipeed_maix_go_defconfig b/configs/sipeed_maix_go_defconfig
index a5b09e17ac1c..21075a9ed004 100644
--- a/configs/sipeed_maix_go_defconfig
+++ b/configs/sipeed_maix_go_defconfig
@@ -32,6 +32,5 @@ BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="board/canaan/k210-soc/busybox-tiny.co
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
diff --git a/configs/sipeed_maix_go_sdcard_defconfig b/configs/sipeed_maix_go_sdcard_defconfig
index 0e80d9c83ad8..5448bd0ce351 100644
--- a/configs/sipeed_maix_go_sdcard_defconfig
+++ b/configs/sipeed_maix_go_sdcard_defconfig
@@ -33,10 +33,9 @@ BR2_LINUX_KERNEL_INTREE_DTS_NAME="canaan/sipeed_maix_go"
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="64M"
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/canaan/k210-soc/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/canaan/k210-soc/genimage.cfg"
diff --git a/configs/sipeed_maixduino_defconfig b/configs/sipeed_maixduino_defconfig
index 7ba7653e8d5f..6c93b29b4343 100644
--- a/configs/sipeed_maixduino_defconfig
+++ b/configs/sipeed_maixduino_defconfig
@@ -32,6 +32,5 @@ BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="board/canaan/k210-soc/busybox-tiny.co
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_INITRAMFS=y
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
diff --git a/configs/sipeed_maixduino_sdcard_defconfig b/configs/sipeed_maixduino_sdcard_defconfig
index 7bdd36e1d09f..0b42cae45df7 100644
--- a/configs/sipeed_maixduino_sdcard_defconfig
+++ b/configs/sipeed_maixduino_sdcard_defconfig
@@ -33,10 +33,9 @@ BR2_LINUX_KERNEL_INTREE_DTS_NAME="canaan/sipeed_maixduino"
 # BR2_PACKAGE_IFUPDOWN_SCRIPTS is not set
 
 # Filesystem
-BR2_INIT_NONE=y
+BR2_INIT_TINYINIT=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="64M"
-BR2_ROOTFS_OVERLAY="board/canaan/k210-soc/rootfs_overlay"
 BR2_ROOTFS_POST_BUILD_SCRIPT="board/canaan/k210-soc/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/canaan/k210-soc/genimage.cfg"
-- 
2.43.0

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