#!/bin/bash

# taken from kernel.slackbuild -- does NOT build uImage -- would need to uncomment code & adjust slightly.

SLKARCH=armv7
VERSION=4.0.0
TMPBUILD=/tmp/armv7-initrd-outoftree
rm -rf $TMPBUILD
mkdir $TMPBUILD

   # Generic requirements:
   # Filesystems:
   INITRDFS="vfat:jbd:jbd2:nls:exportfs:binfmt_misc:md:dm-mod:mbcache:ext2:ext3:ext4:reiserfs:jfs:xfs:fscache"
   # Generic SCSI drivers & low-level drivers for discs/media:
   INITRDSCSI="sg:scsi_mod:sd_mod:cdrom:sr_mod:scsi_tgt"
   # Network filesystems:
   INITRDNETFS="nfs:lockd:nfs_common"
   # USB hubs & support mods, including interface devices (USB keyboards etc)
   # followed by some specific device drivers.
   INITRDUSB="ehci_orion:ehci-hcd:uhci_hcd:usbhid:ohci_hcd:hid:usbcore:usb-storage:ums-cypress:ums-usbat:ums-freecom:ums-isd200:ums-sddr09:ums-sddr55:ums-alauda:ums-jumpshot:ums-onetouch"
   # For SDHC/MMC cards:
   INITRDCARDS="mvsdio:mmci:mmc_block"

   # Hacks.
   # See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=608538
   # We need to add additional modules explicitly since modprobe won't show all dependencies
   # for 'xfs', for example.
   INITRDEXPLICITS="crc32c"

   # Additional stuff such as Netconsole (useful for debugging on machines without a serial cable)
   # INITRDADDITIONS=":netconsole"

  #######################################################################
  # ARMv7 and greater systems
  #######################################################################

   # Network interface cards:
   # Versatile Express has SMSC911
   # Trimslice: Realtek 8169 (needs a firmware blob which is handled by the a/kernel-firmware package)
   # Banana Pi/stmmac - ST Microelectronics
   INITRDNETDEV="smsc911x:r8169:stmmac"

   # Generic libata:
   # The Compulab Trimslice's SATA is on an internal USB host
   INITRDSATA="libata"

   # We'd also need "fbcon" if we choose not to compile it into the kernel.
   # The Trimslice uses the Tegra module which we need to compile into the Kernel.
   # INITRDVIDEO="xgifb" 

   # Subsystems for System on Chip stuff:
   # (Some of these may not be required - I can most likely whittle them down later)
   INITRDSOC="i2c-tegra:spi-tegra:phy-tegra-usb:ehci_tegra:dwmac-sunxi:sunxi-mmc:ahci_sunxi"

   # Real Time Clock:
   # Trimslice: rtc-em3027
   # BananaPi: rtc-sunxi
   # Versatile Express: rtc-pl031
   INITRDRTC="rtc-em3027:rtc-sunxi:rtc-pl031"

   # Wait 2 seconds for the media to become available:
   mkinitrd \
      -R \
      -L \
      -u \
      -w 2 \
      -k $VERSION-$SLKARCH \
      -s $TMPBUILD/initrd-tree \
      -m $INITRDEXPLICITS:$INITRDSOC:$INITRDSCSI:$INITRDSATA:$INITRDUSB:$INITRDFS:$INITRDNETDEV:$INITRDNETFS:$INITRDCARDS${INITRDADDITIONS}:$INITRDRTC \
      -o /initrd-$SLKARCH.gz
   # Creating it in / avoids an ugly bit of output at boot that contains
   # the path where it was built.  It just looks nicer this way :-)
   mv -fv /initrd-$SLKARCH.gz $TMPBUILD/

echo "The initrd is in $TMPBUILD/"