DevonMorris/GentooSystemdMPB12_1.md

## GentooSystemdMPB12_1.md

      
    Raw
  

              GentooSystemdMPB12_1.md
            
          
    This document highlights my quest to install Gentoo with Systemd my Macbook Pro 2015 (12,1). I'm basically following the amd64 handbook with some changes I've had to search out.
First we need to connect to the network. I'm using WiFi to accomplish this and my network is WPA so I run
wpa_passphrase <SSID> <PASS> >> /etc/wpa_supplicant/wpa_supplicant.conf
rc-update add wpa_supplicant default
/etc/init.d/wpa_supplicant start
I'ts probably a good idea to test that the connection worked with ping 8.8.8.8 or something to that effect.
The small print on the retina display is really annoying, so I'm going to work over ssh to install. In order to do this I change the root password
passwd
We'll then enable ssh
rc-service sshd start
and then I find the ip address with ifconfig and ssh root@<ip>. Cool now our eyes won't fall out from the rest of the installtion.
I basically skipped the rest of network configuration in the handbook and moved on to formatting the disks. I follwed the parted section of the handbook in this part.
There are some gothas in this section. So the MBP uses UEFI for its boot, so we have to make sure the /boot partition is formatted as some type of fat partition. Basically my set up looks something like this
parted -a optimal /dev/sda
(parted) mklabel gpt
(parted) unit mib                                                         
(parted) mkpart primary 1 3                                               
(parted) name 1 grub                                                      
(parted) set 1 bios_grub on                                               
(parted) mkpart primary 3 1027                                            
(parted) name 2 boot                                                      
(parted) mkpart primary 1027 9219                                         
(parted) name 3 swap                                                      
(parted) mkpart primary 9219 -1                                           
(parted) name 4 rootfs                                                    
(parted) set 2 boot on                                                    
(parted) print                                                            
Model: ATA APPLE SSD SM0128 (scsi)
Disk /dev/sda: 115712MiB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 

Number  Start    End        Size       File system  Name    Flags
 1      1.00MiB  3.00MiB    2.00MiB                 grub    bios_grub
 2      3.00MiB  1027MiB    1024MiB                 boot    boot, esp
 3      1027MiB  9219MiB    8192MiB                 swap
 4      9219MiB  115711MiB  106492MiB               rootfs

(parted) q                                                                
My boot partition is probably on the big side, but whatever. I also set my swap to 8GB because people sometimes recommend having swap=memory.  I then format these partions
mkfs.vfat /dev/sda2
mkfs.ext4 /dev/sda4
mkswap /dev/sda3
swapon /dev/sda3
Note that we use vfat on /dev/sda2 because of the UEFI system. Now we mount that new filesystem with
mount /dev/sda4 /mnt/gentoo
Check that the date is right with
date
Mine is. Now I cd onto the root of my new filesystem
cd /mnt/gentoo
and download the stage 3 tarball with systemd
wget http://distfiles.gentoo.org/releases/amd64/autobuilds/20190418/systemd/stage3-amd64-systemd-20190418.tar.bz2
(Maybe check this link if you are doing this later because dates and stuff). You can always use the links cli browser to get it if you are still staring at those small letters. At this point I should probably do the gpg validation thing, but YOLO. Let's unpack this tarball
tar xpvf stage3-amd64-systemd-20190418.tar.bz2 --xattrs-include='*.*' --numeric-owner

The handbook does a good job at explaining why this command is this way so maybe read it. Now I gotta edit the make.conf with the one true emulator vi
vi /etc/portage/make.conf

Here my make.conf
# These settings were set by the catalyst build script that automatically
# built this stage.
# Please consult /usr/share/portage/config/make.conf.example for a more
# detailed example.
COMMON_FLAGS="-march=native -O2 -pipe"
CFLAGS="${COMMON_FLAGS}"
CXXFLAGS="${COMMON_FLAGS}"
FCFLAGS="${COMMON_FLAGS}"
FFLAGS="${COMMON_FLAGS}"
MAKEOPTS="-j4"

# NOTE: This stage was built with the bindist Use flag enabled
PORTDIR="/usr/portage"
DISTDIR="/usr/portage/distfiles"
PKGDIR="/usr/portage/packages"

# This sets the language of build output to English.
# Please keep this setting intact when reporting bugs.
LC_MESSAGES=C

# EMERGE_DEFAULT_OPTS is set automatically by livecd-tools autoconfig during first live boot.
# This should be equal to number of processors, see "man emerge" for details.
EMERGE_DEFAULT_OPTS="${EMERGE_DEFAULT_OPTS} --jobs=4 --load-average=4"

Now I copied over my DNS info
cp --dereference /etc/resolv.conf /mnt/gentoo/etc/
I then followed the handbook and mounted my folders
mount --types proc /proc /mnt/gentoo/proc
mount --rbind /sys /mnt/gentoo/sys
mount --make-rslave /mnt/gentoo/sys 
mount --rbind /dev /mnt/gentoo/dev
mount --make-rslave /mnt/gentoo/dev 
Now I chroot!
chroot /mnt/gentoo /bin/bash
source /etc/profile
export PS1="(chroot) ${PS1}"
I also mount /dev/sda2 at boot since I'll have to install grub2 later
mount /dev/sda2 /boot
I got those sweet updates with
emerge-webrsync
Then I make sure I am on the correct profile
eselect profile list
It should be the 17.0/systemd one. If it's not then you can change it with
eselect profile set <num>
Now we can update the whole world by running
emerge --ask --verbose --update --deep --newuse @world
This takes a few minutes, so grab a coke or something. Then you are supposed to set the USE flags, but they've given me headaches during my previous attempts at installing gentoo, so I'll just leave them blank for now.
Now, since I'm using systemd, I'll skip the next part of the handbook, since you can set the time, locale and hostname with systemd after the first boot.
Now, we pray to the linux gods (Linux Torvalds) and pull down that sweet linux kernel
emerge --ask sys-kernel/gentoo-sources
Now comes the most fun (painfully annoying) part of this whole process. configuring the linux kernel. Getting the BCM43602 wifi card on the MBP 12,1 to work has undoubtedly been the most annoying part of this whole operation. I definitely want to use lspci for this operations so I'll install it
emerge --ask sys-apps/pciutils
I will also use lshw which shows more hardware. So I'll install that too
emerge --ask sys-apps/lshw
I used the genkernel --menuconfig all method in the past and tried to enable the Broadcom device drivers, but it didn't pick up that BCM43602 card. I'm going to try to be really explicit and enable all of the drivers I will need. I start off by running
lspci -vvv
You might pipe this into less if you can't scroll in your terminal. I'll just show one entry
00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09)
	Subsystem: Apple Inc. Broadwell-U Host Bridge -OPI
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: [e0] Vendor Specific Information: Len=0c <?>
	Kernel driver in use: bdw_uncore
Where it says kernel driver in use, that's what I'll search for when I do make menuconfig. Here's the list of all the configuration options I selected in the kernel.
based on lscpi. First, a little note on menuconfig, you can search using / just like in vi. You'll see a list of options with numbers on the left. If press that number it will take you to the option and you can hit Y to include the option or M to modularize features. I was probably more liberal than I needed to be so the install might not be "minimal".
SND_HDA_INTEL
X86_INTEL_LPSS
GPIOLIB
I2C_DESIGNWARE_PLATFORM
SND_SOC_INTEL_BDW_RT5766_MACH
USB_XHCI_HCD
BRCMFMAC [M]
BRCMFMAC_PCIE
USB_HID
BONDING

Note: BRCMFMAC [M] needs to be compiled as a module.
I also put in all the suggested packages from the handbook. Then we pray to linux gods again and run
make && make modules_install
Then I install the kernel with
make install
Then I looked at possible kernel modules with this
find /lib/modules/4.19.27-gentoo-r1/ -type f -iname '*.o' -or -iname '*.ko' | less
Here I added brcfmac to /etc/modules-load.d/network.conf. I also added efivarfs to a newly created file /etc/modules-load.d/efi.conf. Now I followed the handbook and modified the /etc/fstab as
/dev/sda2               /boot           vfat            noauto,noatime          0 2
/dev/sda3               none            swap            sw                      0 0
/dev/sda4               /               ext4            noatime                 0 1

We skip the stuff about hostname and network because I am using systemd. I do want to set the root password so I run
passwd
I will install some filesystem tools
emerge --ask sys-fs/e2fsprogs
emerge --ask sys-fs/dosfstools
I also installed some networking tools
emerge --ask net-misc/dhcpcd
emerge --ask net-wireless/iw net-wireless/wpa_supplicant
Now we will create and install the boot loader. Now I installed grub2 for efi system
echo 'GRUB_PLATFORMS="efi-64"' >> /etc/portage/make.conf
emerge --ask sys-boot/grub:2
For some reason, I always have to remount before I can install grub and make the config
mount -o remount,rw /sys/firmware/efi/efivars
grub-install --target=x86_64-efi --efi-directory=/boot
grub-mkconfig -o /boot/grub/grub.cfg
Now I exit the chroot, unmount, reboot and pray it worked
exit
cd
umount -l /mnt/gentoo/dev{/shm,/pts,}
umount -R /mnt/gentoo
reboot
It worked!!! And the wifi modules loaded. Note: if the disk name changes to /dev/sdb it will not boot. So I need to be careful and eventually edit /etc/fstab to use UUID. Now we need to setup systemd.
basically just follow this guide