[gentoo-user] Gentoo on Arm64
So, (yippee!) My new arm64 board has finally shipped. (bummer_dude) Looking around for arm64 install instructions for gentoo (binary image, minimal_cd, cross compile or the old gentoo-embedded-handbook yields squat (nodda::noThing::zarro::null::ziltchen) ::=verboten ?[1] I did find this:: (cat /usr/portage/profiles/profiles.desc) # ARM64 Profiles arm64 default/linux/arm64/13.0 exp So what I would like to do is just boot the board:: [ 8CORE ARMV8A SOC,1GB RAM,4GB EMMC,WIFI/BT ] with an existing gentoo image just to exercise (test) the hardware, before installing it from scratch. Any and all suggestions are most welcome. James [1] https://wiki.gentoo.org/wiki/Project:Embedded#Resources
Re: [gentoo-user] minimal installation cd vs system rescue cd
On 07/01/2015 08:17 AM, gottl...@nyu.edu wrote: My new laptop should arrive this month. It will presumably support UEFI, which I have never used before. I have two questions. 1. The gentoo handbook favors using the minimal installation CD. I downloaded the iso, verified it's integrity, and burned it to a USB stick with dd. I don't think the minimal CD has UEFI support. At least it didn't when I installed gentoo on my UEFI systems, but that was some time ago now. However the wiki page UEFI_Dual_boot_with_Windows_7/8 says to use a system rescue CD. Is that required or can I use the minimal installation CD? You can either use SystemRescueCD or use a Mint boot CD. Both are UEFI bootable. Make sure you actually boot in UEFI mode though, most BIOSes have a key to bring up the boot menu with a list of choices. UEFI boot sources are clearly marked there (at least they were when I installed.) I myself used the Mint CD (I had one on hand already) so I had a browser to bring up webpages while I installed. 2. The handbook, when discussing Booting the installation CD, says Important When installing Gentoo with the purpose of using the UEFI interface instead of BIOS, it is recommended to boot with UEFI immediately. If not, then it might be necessary to create a bootable UEFI USB stick (or other medium) once before finalizing the Gentoo Linux installation. If you use SystemRescueCD or the Mint boot CD you'll boot in UEFI mode so this is irrelevant. Pretty certain you need to be booted in UEFI to install the boot loader of your choice. I stuck with grub2 and had no issues installing it. I don't understand what I am to do? Must I change the USB stick to somehow specify UEFI? Or will the laptop firmware ask me whether to boot UEFI? Or something else? The boot CD/USB needs to support UEFI, if it doesn't you can't boot in that mode. I think my NUC was F10 or F12 to show the boot menu, then you can pick the UEFI boot source. Dan
Re: [gentoo-user] minimal installation cd vs system rescue cd
2015-07-01 9:17 GMT-06:00 gottl...@nyu.edu: My new laptop should arrive this month. It will presumably support UEFI, which I have never used before. I have two questions. 1. The gentoo handbook favors using the minimal installation CD. I downloaded the iso, verified it's integrity, and burned it to a USB stick with dd. However the wiki page UEFI_Dual_boot_with_Windows_7/8 says to use a system rescue CD. Is that required or can I use the minimal installation CD? You could use almost any distro to install gentoo, I have done it before, even my first install was the first livecd i found in my CDs case(LinuxMint), after reading the instructions I didn't found anything that actually made it a MUST to use the recommendations of the handbook. 2. The handbook, when discussing Booting the installation CD, says Important When installing Gentoo with the purpose of using the UEFI interface instead of BIOS, it is recommended to boot with UEFI immediately. If not, then it might be necessary to create a bootable UEFI USB stick (or other medium) once before finalizing the Gentoo Linux installation. I don't understand what I am to do? Must I change the USB stick to somehow specify UEFI? Or will the laptop firmware ask me whether to boot UEFI? Or something else? This is so the EFI information is available inside the booted OS. if you don't boot using EFI this information is not available(I'm not 100% sure about this, it's just what I remember at the top of my head) I remember from reading this list you use GNOME thus systemd, then I would highly recommend doing the install with a systemd livecd, it makes it so much practical to get to the chroot and you can test if your userspace boots right without needing to reboot thanks to nspawn. Here's a quick description of the procces, using a systemd live media(I will put the obvious just for completeness): 1. Get the stage3 and the livecd you'll use 2. boot 3. mkdir /mnt/gentoo and get the partition(s) where the installation will be, ready and mounted 4. tar -xvjpf the stage 3 into /mnt/gentoo 5. cd /mnt/gentoo systemd-nspawn (this is the replacement for chroot, it mounts /dev/, /proc, and /sys for you) 6. get the portage tree 7. eselect a systemd profile, I would use the minimal(default/linux/amd64/13.0/systemd) temporarily so I don't have to build all of GNOME before booting. 8. emerge -avuDN @world (will get systemd installed) and 9. set a passoword for root and exit the shell, and boot the newly installed systemd with # systemd-nspawn -b 10. Configure timezone(timedatectl), locale.gen, locale(localectl), fstab... etc. 11. get a boot loader(Gummiboot the recommendation, and to the dislike of some, soon part of the systemd package, so systemd will come with a bootloader) 12. Get a kernel (CONFIG_EFI_STUB is needed to boot with gummiboot) 13. boot and change profile to a gnome one, and emerge gnome or gnome-minimal. Personally I find that installing Gentoo with systemd is more practical, mainly because of nspwan.
[gentoo-user] minimal installation cd vs system rescue cd
My new laptop should arrive this month. It will presumably support UEFI, which I have never used before. I have two questions. 1. The gentoo handbook favors using the minimal installation CD. I downloaded the iso, verified it's integrity, and burned it to a USB stick with dd. However the wiki page UEFI_Dual_boot_with_Windows_7/8 says to use a system rescue CD. Is that required or can I use the minimal installation CD? 2. The handbook, when discussing Booting the installation CD, says Important When installing Gentoo with the purpose of using the UEFI interface instead of BIOS, it is recommended to boot with UEFI immediately. If not, then it might be necessary to create a bootable UEFI USB stick (or other medium) once before finalizing the Gentoo Linux installation. I don't understand what I am to do? Must I change the USB stick to somehow specify UEFI? Or will the laptop firmware ask me whether to boot UEFI? Or something else? thanks, allan
Re: [gentoo-user] minimal installation cd vs system rescue cd
Thank you Daniel, Mick, and Jc for the clarifications/suggestions. To respond to Jc, yes I used systemd so you suggestion is apt. thanks again to all, allan
Re: [gentoo-user] minimal installation cd vs system rescue cd
On Wednesday 01 Jul 2015 16:33:42 Daniel Frey wrote: On 07/01/2015 08:17 AM, gottl...@nyu.edu wrote: My new laptop should arrive this month. It will presumably support UEFI, which I have never used before. I have two questions. 1. The gentoo handbook favors using the minimal installation CD. I downloaded the iso, verified it's integrity, and burned it to a USB stick with dd. I don't think the minimal CD has UEFI support. At least it didn't when I installed gentoo on my UEFI systems, but that was some time ago now. However the wiki page UEFI_Dual_boot_with_Windows_7/8 says to use a system rescue CD. Is that required or can I use the minimal installation CD? You can either use SystemRescueCD or use a Mint boot CD. Both are UEFI bootable. Make sure you actually boot in UEFI mode though, most BIOSes have a key to bring up the boot menu with a list of choices. UEFI boot sources are clearly marked there (at least they were when I installed.) I myself used the Mint CD (I had one on hand already) so I had a browser to bring up webpages while I installed. 2. The handbook, when discussing Booting the installation CD, says Important When installing Gentoo with the purpose of using the UEFI interface instead of BIOS, it is recommended to boot with UEFI immediately. If not, then it might be necessary to create a bootable UEFI USB stick (or other medium) once before finalizing the Gentoo Linux installation. If you use SystemRescueCD or the Mint boot CD you'll boot in UEFI mode so this is irrelevant. Pretty certain you need to be booted in UEFI to install the boot loader of your choice. I stuck with grub2 and had no issues installing it. I don't understand what I am to do? Must I change the USB stick to somehow specify UEFI? Or will the laptop firmware ask me whether to boot UEFI? Or something else? The boot CD/USB needs to support UEFI, if it doesn't you can't boot in that mode. I think my NUC was F10 or F12 to show the boot menu, then you can pick the UEFI boot source. Dan If it comes preinstalled with MSWindows you will need to go into BIOS and disable 'booting from legacy BIOS' or 'Compatibility Support Module', as well as disabling Secure Boot (select Other OS rather than MSWindows). The actual terminology depends on your MoBo, I'm just sharing here what the Asus MoBos use. The first setting will make sure you will boot into UEFI, rather than MBR. The second setting will make sure that the MoBo will not fail to boot due to your kernel not being digitally signed by Redmond. -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] Gentoo on Arm64
James wrote: So what I would like to do is just boot the board:: [ 8CORE ARMV8A SOC,1GB RAM,4GB EMMC,WIFI/BT ] with an existing gentoo image just to exercise (test) the hardware, before installing it from scratch. Any and all suggestions are most welcome. I don't have links to pre-built images and never used gentoo embedded. Here we use a GCC cross-toolchain, build the kernel from scratch and the rootfs with buildroot on the host, copy to an SDCard and boot our embedded system from there. The bootloader is pre-programmed through JTAG to embedded flash. Application debugging is done with gdbserver running on the target communicating through ethernet connection to the host. raffaele
