--- wikisrc/ports/evbarm.mdwn 2018/11/23 11:58:27 1.62 +++ wikisrc/ports/evbarm.mdwn 2019/06/27 17:32:09 1.81 @@ -7,19 +7,17 @@ port_var3="earmv6hf" port_var4="earmv7hf" port_var5="earmv7hfeb" port_var_install_notes="evbarm-earm" -cur_rel="8.0" +cur_rel="8.1" future_rel="9.0" -changes_cur="8.0" +changes_cur="8.1" changes_future="9.0" -thumbnail="http://www.netbsd.org/images/ports/evbarm/adi_brh.gif" +thumbnail="//www.netbsd.org/images/ports/evbarm/adi_brh.gif" about=""" NetBSD/evbarm is the port of NetBSD to various evaluation and prototyping boards based on CPUs implementing the ARM architecture. NetBSD/evbarm also supports some specific embedded system products based on prototype board designs. -Matt Thomas is the maintainer of NetBSD/evbarm. - ### CPU types The evbarm port can be built with a variety of CPU options, corresponding to the @@ -27,7 +25,7 @@ The evbarm port can be built with a vari There are four main variables: the word size, the instruction set, the endianness, and whether there is hardware floating point. By default -the CPU type is "earm", and this implies aarch32 (32-bit), \todo cpu +the CPU type is "earm", and this implies aarch32 (32-bit), earmv5 cpu architecture, little endian (el when explicitly stated), and soft (Emulated) floating point. Another example, suitable for Raspberry PI 2, is earmv7hf, which is aarch32, the v7 instruction set, little @@ -51,57 +49,6 @@ set and the aarch64 architecture, built (Note also that armv8 is the first architecture to support aarch64, so this will not be an issue until at least armv9.) -#### ABI types - -There are two basic ABIs on ARM. One, called oabi, assumed a -particular kind of hardware floating point (FPA). This results in -faulting any floating-point instructions for kernel emulation on a -vast number of CPus, which is very slow. A newer one, called eabi, -has two variants. Both have stricter alignment rules, tending to 8 -byte rather than 4 bytes for 8-byte types (but actually read the specs -if you care). The one without "hf" emulates floating point without -causing traps/emulation, and "hf" uses VFP instructions, which are -present on modern CPUs. See the -[TS-7200](https://wiki.embeddedarm.com/wiki/EABI_vs_OABI) and -[Debian](https://wiki.debian.org/ArmEabiPort) documentation. - -Now, EABI is normal, and OABI is crufty. The only real reason NetBSD -retains OABI support is binary compatibility with older releases. The -"arm" and "armeb" MACHINE_ARCH targets are OABI; the rest of the -targets, all having "earm" are EABI. - -\todo CHECK THIS: The "aarch64" MACHINE_ARCH target is an EABI variant. - -### Relationship of MACHINE_ARCH to official ARM terminology - -Note that these are all little endian, and have big endian variants -with a "eb" sufix. - -[[!table data=\"\"\" -MACHINE_ARCH |bits | ARM architecture version |ABI -arm |32 |? |oabi -earm |32 |armv4 (effectively an alias) |eabi -earmv4 |32 |armv4 (no thumb, so ok on strongarm) | eabi -earmv5 |32 |armv5t |eabi -earmv6 |32 |armv6 |eabi -earmv7 |32 |armv7 |eabi -aarch64 |64 |armv8 |\todo ? eabi -\"\"\"]] - -\todo Explain why, if we have armv4, and this is confusing, we still have earm as a MACHINE_ARCH. - -\todo Explain why aarch64 is a MACHINE_ARCH, when it seems like it -should be something like armv8hf_64. - -\todo Explain if MACHINE_ARCH values correspond to a particular -argument to some CPU selection command in gcc (and/or clang). - -### Kernels and userland - -The evbarm userland can be used on any system that can run code of the -CPU type used for the build. Typically, a particular board requires a -kernel for that board. - ### anita and qemu anita can be used to test builds. (In addition to anita, install qemu and dtb-arm-vexpress from pkgsrc.) The release subdirectory should follow the naming convention on the autobuild cluster, used below. @@ -110,18 +57,33 @@ anita can be used to test builds. (In a - evbarm-aarch64 uses "qemu-system-aarch64 -M virt" - Information on how to test emulated versions of other specific hardware is welcome. -### Board specific information +### invisible.ca builds + +NetBSD developer Jared McNeill provides [builds of NetBSD-current for a vast variety of hardware.](https://www.invisible.ca/arm/) In addition to the standard build, these images have board-specific uboot contents. See also /usr/pkgsrc/sysutils/u-boot*. + +### Board specific information (often including installation information) - [[Allwinner sunxi family SoCs|Allwinner]] - - [[BeagleBone and BeagleBone Black|BeagleBone]] + - [[BeagleBone, BeagleBone Black, and PocketBeagle|BeagleBone]] - [[NVIDIA Tegra|Tegra]] - [[ODROID C1 and C1+|ODROID-C1]] - [[Raspberry Pi 1, 2 and 3|Raspberry Pi]] -""" +### SSH configuration for installtion +The default configuration will connect to the local network via DHCP and +run an SSH server. In order to use the SSH server, we must configure +users. This can be done by writing to the SD card's MS-DOS partition. + +Create a creds.txt file and use: + + useradd user password + + + +""" supported_hardware=""" -**NOTE**: This list is incomplete. For a full list of configurations, please see the [evbarm kernel configs](http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/evbarm/conf/) directory in CVS. +**NOTE**: This list is incomplete. For a full list of boards, please see the [GENERIC DTS files](http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/arch/evbarm/conf/GENERIC). [[!toc startlevel=3]] @@ -321,6 +283,8 @@ Support for NVIDIA [[Tegra]] K1 SoCs is ### Raspberry Pi Foundation **Raspberry Pi**/**Raspberry Pi 2**/**Raspberry Pi 3** The [[Raspberry Pi]] is a low-cost credit-card-sized computer from the Raspberry Pi Foundation. The Raspberry Pi, Pi 2, and Pi 3 are supported. +See the [[Raspberry Pi 1, 2 and 3|Raspberry Pi]] page for much more information. + ### Samsung **SMDK2410** The SMDK2410 is the reference platform for the Samsung **S3C2410** processor,