--- wikisrc/ports/evbarm/raspberry_pi.mdwn 2017/10/14 15:06:30 1.55 +++ wikisrc/ports/evbarm/raspberry_pi.mdwn 2018/10/30 01:33:39 1.71 @@ -2,7 +2,7 @@ This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org). All board variants are supported. -Initial, limited, Raspberry Pi support was introduced in NetBSD 6.0. NetBSD 7.0 adds complete support for the board, along with introducing support for the quad-core Raspberry Pi 2 board. Raspberry Pi 3 support was added for NetBSD 8, and backported to NetBSD 7 in July of 2017. +Initial, limited, Raspberry Pi support was introduced in NetBSD 6.0. NetBSD 7.0 adds complete support for the board, along with introducing support for the quad-core Raspberry Pi 2 board. Raspberry Pi 3 support was added for NetBSD 8, and backported to NetBSD 7 in July of 2017. (This page assumes those using NetBSD 7 are using 7.2, or the netbsd-7 branch after mid 2018.) [[images/raspberrypi.jpg]] @@ -12,9 +12,10 @@ Initial, limited, Raspberry Pi support w # What works (and what doesn't yet) -## NetBSD 7 before July, 2017 +## NetBSD 7 and NetBSD 8 - RaspberryPi 1, and 2 (including SMP) + - Raspberry Pi 3 (excluding WiFi and bluetooth) - multi-user boot with root on SD card - serial or graphics console (with EDID query / parsing) - DMA controller driver and sdhc(4) support @@ -28,10 +29,6 @@ Initial, limited, Raspberry Pi support w - USB Ethernet - usmsc(4) - X windows. -## NetBSD 7 after July, 2017 and NetBSD 8 - - - Raspberry Pi 3 (excluding WiFi and bluetooth) - ## NetBSD current - Raspberry Pi 3 bluetooth @@ -42,33 +39,84 @@ Initial, limited, Raspberry Pi support w - USB (host); isochronous transfers. - WiFi +# CPU types + +Note that one can also use code for earlier models on later models. + + - Raspberry Pi 1 uses "earmv6hf". + - Raspberry Pi 2 uses "earmv7hf". + - Raspberry Pi 3 uses "earmv7hf". + +See also [[NetBSD/aarch64|aarch64]] for running the Pi 2/3 in 64-bit mode. + # Installation - - The automatic nightly builds on [nyftp.netbsd.org](http://nyftp.netbsd.org/pub/NetBSD-daily/) provide image files that can be used for installation. The Raspberry Pi and Pi 2 ports are part of the NetBSD 7 release. - - The 'evbarm-earmv6hf/binary/gzimg/' directory contains an rpi.img file that can be used as a single image for both boards. - - The 'evbarm-earmv7hf/binary/gzimg/' directory, as of August 6th 2015, contains an armv7.img file that is optimized for Raspberry Pi 2. - - The stable build directory will be under netbsd-7/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201412161700Z/evbarm-earmv6hf/binary/gzimg/) - - The HEAD/current directory build will be under HEAD/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201508062150Z/evbarm-earminstv7hf/binary/gzimg/) - - You can build your own version of these images using (for example) './build.sh -m evbarm -a earmv6hf -u release', or './build.sh -m evbarm -a earmv7hf -u release' - - gunzip and dd this img to your sd card. For example, +## SD card structure + +The Raspberry Pi looks for firmware and kernel.img on the first FAT32 partition of the uSD card. A separate kernel (kernel7.img) is used on RPI2 and RPI3. + +The NetBSD kernel will then use the FFS partition as the root filesystem. + +A 2 GB card is the smallest workable size. The NetBSD filesystem will be expanded to fit. + +## Choosing a version + +First, decide if you want to install a formal release (7.2 or 8.0), a stable branch build (netbsd-7, netbsd-8), or NetBSD-current. For people who don't know how to choose among those, 8.0 or netbsd-8 is probably best. + +See also "ebijun's image", below, which is NetBSD-current and includes packages. + +## Getting bits to install + +You can either build a release yourself with build.sh, or get one from the NetBSD FTP servers. + +Both will provide rpi.img.gz and rpi_inst.img.gz. Each is an image to be written to a uSD card, and has a FAT32 partition for booting. In rpi.img.gz, there is also an FFS partition for NetBSD. + +### Building yourself + +Getting sources and building a release with build.sh is not special for evbarm. Pick a CPU type alias and pass it to build.sh with -m. Examples (the first two are equivalent): + + - ./build.sh -m earmv6hf -u release + - ./build.sh -m evbarm -a earmv6hf -u release + - ./build.sh -m evbarm -a earmv7hf -u release + +### NetBSD FTP servers + +NetBSD provides nightly builds on [nyftp.netbsd.org](http://nyftp.netbsd.org/pub/NetBSD-daily/). These are equivalent to building yourself. + + - The 'evbarm-earmv6hf/binary/gzimg/' directory contains an rpi.img file that can be used as a single image for both boards. + - The 'evbarm-earmv7hf/binary/gzimg/' directory contains an armv7.img file that is optimized for Raspberry Pi 2/3. + - The old stable build directory will be under netbsd-7/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-7/201710201440Z/evbarm-earmv6hf/binary/gzimg) + - The stable build directory will be under netbsd-8/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/netbsd-8/201710211010Z/evbarm-earmv6hf/binary/gzimg/) + - The HEAD/current directory build will be under HEAD/YYYYMMDDHHMMZ/ (for example, http://nyftp.netbsd.org/pub/NetBSD-daily/HEAD/201710202210Z/evbarm-earmv7hf/binary/gzimg/) + +## Preparing a uSD card + +Once you have rpi.img.gz (or rpi_inst), put it on a uSD card using gunzip and dd, for example: + + - gunzip rpi.img.gz + - dd if=rpi.img of=/dev/disk1 + +### Serial Console + +By default the rpi.img is set to use the HDMI output. If you wish to use a serial console, first mount the FAT32 partition and then +edit cmdline.txt and remove '"console=fb"'. - dd if=rpi.img of=/dev/disk1 + - Most (all?) USB-to-TTL serial adapters only connect Tx, Rx and ground, and do not connect any flow control lines. An effect of missing flow control is that you see console output, but cannot type anything. If so, adjust your serial console application's flow control settings to "none". - - Using a serial console - - By default the rpi.img is set to use the HDMI output; to change to using a serial console first mount rpi.img (it's a FAT filesystem) + In Kermit, the command is "set flow none". - edit cmdline.txt and remove '"console=fb"' + In minicom, run "minicom -s" and set hardware flow control to "no" - - Most (all?) USB-to-TTL serial adapters only connect Tx, Rx and ground, and do not connect any flow control lines. An effect of missing flow control is that you see console output, but cannot type anything. If so, adjust your serial console application's flow control settings to "none". +### Enabling ssh - In Kermit, the command is "set flow none". +If you want to enable ssh with the standard image, so that you can log in over the net without either a serial or HDMI console, mount the ffs partition, place /root/.ssh/authorized_keys, uncomment PermitRootLogin in /etc/ssh/sshd_config, and comment out the rc_configure=NO in /etc/rc.conf. Besides having to find the IP address, you will have to wait for the partition resizing and reboot. - In minicom, run "minicom -s" and set hardware flow control to "no" +### Installation with sshramdisk image -## Installation with sshramdisk image +build.sh (and hence the FTP site) also creates an image 'rpi_inst.img.gz' specifically for installation without HDMI or a serial console. Note that this image is much smaller and that you will need to fetch the sets over the network. To use this method, write that image to a uSD card as above, and then: - - You may use the rpi_inst.img.gz file created by an evbarm build. - - Connect Ethernet Cable to RPI. + - Ensure that you have a lan with a DHCP server. + - Connect an Ethernet cable from the RPI to the LAN. - After starting DHCP client, SSH login to with user "sysinst", and password "netbsd". - Be careful to note the ip address given during DHCP so you don't lose your connection - Also for after the sysinst is done and the system reboots @@ -76,11 +124,13 @@ Initial, limited, Raspberry Pi support w ## Installation via ebijun's image -Jun Ebihara provides an install image for Raspberry Pi that includes -packages. It is based on NetBSD-current. This image is typically -updated every few weeks. +As an alternative to the standard installation images, Jun Ebihara +provides an install image for Raspberry Pi that includes packages. It +is based on NetBSD-current and is built for earmv6hf, and thus will +work on Raspberry Pi 1, 2 and 3. This image is typically updated +every few weeks. - - https://github.com/ebijun/NetBSD/blob/master/RPI/RPIimage/Image/README + - [https://github.com/ebijun/NetBSD/blob/master/RPI/RPIimage/Image/README](https://github.com/ebijun/NetBSD/blob/master/RPI/RPIimage/Image/README) ## Updating the kernel @@ -91,7 +141,7 @@ updated every few weeks. /Users/feyrer/work/NetBSD/cvs/src-current/obj.evbarm-Darwin-XXX/sys/arch/evbarm/compile/RPI2/netbsd ... - - Besides the "netbsd" kernel in ELF format, there is also a "netbsd.bin" kernel that is in a format that the Raspberry can boot. + - Besides the "netbsd" kernel in ELF format, there is also a "netbsd.img" (for current) or "netbsd.bin" (for 7 and 8) kernel that is in a format that the Raspberry can boot. - Depending on your hardware version, copy this either to /boot/kernel.img (First generation Pi, Pi Zero hardware) or to /boot/kernel7.img (Pi 2, Pi 3 hardware) - reboot