New subject: Community kernel 4.18.x

22 Oct 2018


      -----Oorspronkelijk bericht-----
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Afzender:Mark Verlinde mark@havak.nl
Verstuurd: Maandag 22 Oktober 2018 14:27
Aan: Conversations around CentOS on ARM hardware arm-dev@centos.org
Onderwerp: Re: [Arm-dev] Community kernel 4.18.x
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Thank you for the hints, it Led to a booting setup!
Still need to fine tine, some customization may not be needed howerever this configuration led to the booting odroid HC1.
Appended cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 to the cmdline:
# cat /boot/extlinux/extlinux.conf
# extlinux.conf generated by appliance-creator
ui menu.c32
menu autoboot Welcome to Centos-Uboot-Community-kernel. Automatic boot in # second{,s}. Press a key for options.
menu title Centos-Uboot-Community-kernel Boot Options.
menu hidden
timeout 20
totaltimeout 600
default=Centos-Uboot-Community-kernel (4.18.14-200.el7.armv7hl)
label CentOS Linux (4.18.16-200.el7.armv7hl) 7 (AltArch)
        kernel /vmlinuz-4.18.16-200.el7.armv7hl
        append cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 ro root=UUID=a306d630-4957-4da0-8dd6-79f943147d61 LANG=en_US.UTF-8
        fdtdir /dtb-4.18.16-200.el7.armv7hl
        initrd /initramfs-4.18.16-200.el7.armv7hl.img
label Centos-Uboot-Community-kernel (4.18.14-200.el7.armv7hl)
        kernel /vmlinuz-4.18.14-200.el7.armv7hl
        append cpuidle.off=1 console=tty1 console=ttySAC2,115200n8 ro root=UUID=a306d630-4957-4da0-8dd6-79f943147d61
        fdtdir /dtb-4.18.14-200.el7.armv7hl
        initrd /initramfs-4.18.14-200.el7.armv7hl.img
In an effort to mimic the FC28 intenramfs added/omitted  some modules and
added _all_ exynos and samsung divers loaded by the booting FC28 setup:
#cat /etc/dracut.conf.d/odroid_hc1.conf
add_dracutmodules+="dm"
omit_dracutmodules+="network ifcfg"
add_drivers+="exynosdrm exynos_bus exynos_trng exynos_nocp exynos_rng phy_exynos_dp_video phy_exynos_mipi_video dwc3_exynos clk_exynos_audss i2c_exynos5 dw_mmc_exynos dw_mmc_pltfm dw_mmc phy_exynos_usb2 phy_exynos5_usbdrd pwm_samsung "
(AGAIN) NOTE: some may be necessary others may be ommited..
Turns out one additional driver - dwc3 - is needed to boot the odroid HC1 with a rootfs residing on a SATA device.
My best guess is dwc3_exynos actually depends on dwc3 and/or (one of) the dependencies of dwc3.
#cat /etc/dracut.conf.d/odroid_hc1.conf
add_dracutmodules+="dm"
omit_dracutmodules+="network ifcfg"
add_drivers+=" exynosdrm exynos_bus exynos_trng exynos_nocp exynos_rng phy_exynos_dp_video phy_exynos_mipi_video dwc3_exynos clk_exynos_audss i2c_exynos5 dw_mmc_exynos dw_mmc_pltfm dw_mmc phy_exynos_usb2 phy_exynos5_usbdrd pwm_samsung "
add_drivers+=" dwc3"