OpenSUSE rootfs bringup

openSUSE rootfs bringup

Howto create openSUSE custom rootfs. Based on this guide Chroot / do-it-yourself environment

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DIY Enviroment

• First, download the latest JeOS, XFCE or E17 root file system (*armv7-rootfs*) available at:

ARMV7HL Factory images for example this one openSUSE-Factory-ARM-E17.armv7-rootfs.armv7l-1.12.1-Build172.10.tbz

• Create type gpt partition table on mmc SD card or USB flash (i will use SD)
  • Create two primary partitions, for example first lxboot and second lxroot
    • It is possible to put everything on one partition
  • Format them to ext4

• Mount /lxroot to /mnt/temp and run

sudo tar xvjf openSUSE-Factory-ARM-E17.armv7-rootfs.armv7l-1.12.1-Build172.10.tbz -C /mnt/temp

• Create folders /boot and /dtb on lxboot partition

• Compile kernel 3.15-rcX using tegra_defconfig or custom config
  • Copy resulting arch/arm/boot/zImage to lxboot/boot
  • Copy resulting arch/arm/boot/dts/tegra20-paz00.dtb to lxboot/dtb
  • Run make modules_install with INSTALL_MOD_PATH variable to some folder then copy resulting modules directories to lxroot/lib/modules/3.15-rcX-kernelname

• WIP Use precompiled kernel
  • Self compiled kernel and modules https://dl.dropboxusercontent.com/u/32472722/opensuse/kernel-3.15.0-rc7-tegra.tar.gz
  • Will add as rpm later

• Create boot.scr file
  • boot.scr content example openSUSE style

setenv ramdisk boot/initrd.uboot
setenv kernel boot/zImage
setenv initrd_high "0xffffffff"
setenv fdt_high "0xffffffff"
setenv bootargs  plymouth.enable=0 console=ttyS0,115200n8 console=tty1 rw root=/dev/mmcblk0p3 showopts ${append}
setenv kernel 'boot/zImage'
setenv initrd 'boot/initrd.uboot'
setenv fdtfile 'dtb/tegra20-paz00.dtb'
setenv flavor 'paz00'
setenv target 'firstboot'
setenv bootdevs 'mmc usb'
setenv bootparts '${unit}:2'
setenv initrd_high '0xffffffff'
setenv fdt_high '0xffffffff'
setenv boottype 'bootz'
setenv kerneladdr '0x1000000'
setenv ramdiskaddr '0x2200000'
setenv should_use_fdt '1'
setenv should_load_fdt '1'
setenv fdtaddr '0x2000000'
setenv setdev 'mmc dev ${unit}'
setenv units '0 1'
setenv sizeprefix '0x'
setenv fs 'ext2'
test -n "$kerneladdr" || setenv kerneladdr ${kernel_addr_r}
test -n "$ramdiskaddr" || setenv ramdiskaddr ${ramdisk_addr_r}
setenv load_kernel '${fs}load ${bootdev} ${bootpart} ${kerneladdr} ${kernel}'
setenv load_initrd '${fs}load ${bootdev} ${bootpart} ${ramdiskaddr} ${initrd}; setenv rd_filesize ${sizeprefix}${filesize}'
if itest 1${should_load_fdt} == 11; then
if test 0${fdtfile} = 0call_findfdt; then
run findfdt
setenv fdtfile dtb/${fdtfile}
fi
setenv loadfdt '${fs}load ${bootdev} ${bootpart} ${fdtaddr} ${fdtfile}'
else
setenv loadfdt ''
fi
if itest 1${use_fdt_addr} == 11; then
# Calxeda systems use $fdt_addr rather than $fdtaddr
setenv fdtaddr $fdt_addr
fi
if itest 1${use_fdt_addr_r} == 11; then
# At least upstream rpi_b uses $fdt_addr_r rather than $fdtaddr
setenv fdtaddr ${fdt_addr_r}
fi
if itest 1${should_use_fdt} == 11; then
setenv boot_kernel '${boottype} ${kerneladdr} ${ramdiskaddr}:${rd_filesize} ${fdtaddr}'
else
setenv boot_kernel '${boottype} ${kerneladdr} ${ramdiskaddr}:${rd_filesize}'
fi
setenv doit 'if run load_kernel; then; run load_initrd; run loadfdt; run boot_kernel; fi'
setenv bootcmd 'for bootdev in ${bootdevs}; do for unit in ${units}; do setenv bootpart; for bootpart in ${bootparts}; do setenv fix_bootpart "setenv bootpart $bootpart"; run fix_bootpart; run setdev; run doit; done; done; done'
boot

• • Copy resulting boot.scr to lxboot/

• Now it is ready to run on AC100

Firstboot notes

• Howto install opentegra (your kernel must be 3.15-rc3 minimum)
  • Add AC100 specific repositories

sudo zypper ar http://download.opensuse.org/repositories/X11:/XOrg/openSUSE_Factory_ARM/ openSUSE_Factory_ARM_X11_XOrg
sudo zypper ar http://download.opensuse.org/repositories/devel:/ARM:/Factory:/Contrib:/Tegra/standard/ devel_ARM_Factory_Contrib_Tegra_standard

• • Install latest XOrg version

sudo zypper dup --from openSUSE_Factory_ARM_X11_XOrg

• • Install libdrm and xf86-video-opentegra packages

sudo zypper in xf86-video-opentegra libdrm_tegra0 libkms1

• • opentegra xorg config live here /usr/share/X11/xorg.conf.d/opentegra.conf
    • You may need to remove this file if XOrg version can't parse its OutputClass section and create /etc/X11/xorg.conf.d/00-opentegra.conf config file

Section "Device"
        Identifier "opentegra"
        Driver "opentegra"
EndSection

• Fix permissions, if XOrg not suid by chance

sudo zypper in --force permissions

Not sure yet if this is correct fix

• • If XOrg fail to start with some permission denied or existing file not found chmod it with suid rights manualy

sudo chmod u+s /usr/bin/Xorg

U-Boot notes

• Load boot.scr manualy if you stuck in u-boot console

ext2load mmc 1:2 0x10000000 /boot.scr
source 0x10000000