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Annotation of wikisrc/ports/evbarm.mdwn, revision 1.88

1.1       mspo        1: [[!template id=port
                      2: port="evbarm"
1.6       mspo        3: port_alt="arm"
1.49      leot        4: port_var1="earm"
                      5: port_var2="earmeb"
                      6: port_var3="earmv6hf"
                      7: port_var4="earmv7hf"
                      8: port_var5="earmv7hfeb"
1.83      mrg         9: port_var6="aarch64"
1.49      leot       10: port_var_install_notes="evbarm-earm"
1.85      martin     11: cur_rel="9.0"
                     12: future_rel="10.0"
                     13: changes_cur="9.0"
                     14: changes_future="10.0"
1.71      leot       15: thumbnail="//www.netbsd.org/images/ports/evbarm/adi_brh.gif"
1.1       mspo       16: about="""
                     17: NetBSD/evbarm is the port of NetBSD to various evaluation and prototyping
                     18: boards based on CPUs implementing the ARM architecture. NetBSD/evbarm also
                     19: supports some specific embedded system products based on prototype board
                     20: designs.
                     21: 
1.42      gdt        22: ### CPU types
                     23: 
1.57      gdt        24: The evbarm port can be built with a variety of CPU options, corresponding to the
                     25: [large array of ARM CPU architectures](https://en.wikipedia.org/wiki/ARM_architecture#Cores).
                     26: There are
1.56      gdt        27: four main variables: the word size, the instruction set, the
                     28: endianness, and whether there is hardware floating point.  By default
1.68      gdt        29: the CPU type is "earm", and this implies aarch32 (32-bit), earmv5 cpu
1.56      gdt        30: architecture, little endian (el when explicitly stated), and soft
1.58      gdt        31: (Emulated) floating point.  Another example, suitable for Raspberry PI
1.56      gdt        32: 2, is earmv7hf, which is aarch32, the v7 instruction set, little
                     33: endian, and hardware floating point.
1.42      gdt        34: 
                     35: Typically, various boards are best compiled with a CPU type that
                     36: matches the board's CPU and floating point support, but generally a
                     37: lower CPU instruction set version is workable on a newer board.  See
                     38: build.sh and look for aliases for the evbarm port.
                     39: 
1.56      gdt        40: Through NetBSD 8, the evbarm port has supported exclusively the
                     41: aarch32 (32-bit CPU) sub-family of the ARM architecture.  Some
                     42: processors, such as many supporting the armv8 CPU architecture, also
                     43: support a 64-bit instruction set, referred to as aarch64.  This is
                     44: sometimes referred to as a distinct port, [[NetBSD/aarch64|aarch64]],
                     45: with code in src/sys/arch/aarch64, but it is built as the evbarm port
                     46: with aarch64 cpu type, and available as the alias evbarm64.
1.50      gdt        47: 
1.58      gdt        48: Note that MACHINE_ARCH=aarch64 currently refers to the A64 instruction
                     49: set and the aarch64 architecture, built for the armv8 architecture.
                     50: (Note also that armv8 is the first architecture to support aarch64, so
                     51: this will not be an issue until at least armv9.)
                     52: 
1.84      wiki       53: ### armbsd.org builds
1.78      gdt        54: 
1.84      wiki       55: NetBSD developer Jared McNeill provides [builds of NetBSD 9 and -current for a vast variety of hardware.](https://www.armbsd.org/)   In addition to the standard build, these images have board-specific U-Boot contents.  See also /usr/pkgsrc/sysutils/u-boot*.
1.78      gdt        56: 
1.80      gdt        57: ### Board specific information (often including installation information)
1.88    ! nia        58: 
1.38      wiki       59:  - [[Allwinner sunxi family SoCs|Allwinner]]
1.69      sevan      60:  - [[BeagleBone, BeagleBone Black, and PocketBeagle|BeagleBone]]
1.41      wiki       61:  - [[NVIDIA Tegra|Tegra]]
1.27      wiki       62:  - [[ODROID C1 and C1+|ODROID-C1]]
1.40      gdt        63:  - [[Raspberry Pi 1, 2 and 3|Raspberry Pi]]
1.83      mrg        64:  - [[RockChip SoCs|RockChip]]
1.87      aymeric    65:  - [[Terasic DE0 Nano-SoC|Cyclone5]]
1.27      wiki       66: 
1.88    ! nia        67: **NOTE**: This list is incomplete. For a full list of supported boards, please see the list of [32-bit](https://github.com/NetBSD/src/blob/netbsd-9/sys/arch/evbarm/conf/GENERIC#L18) and [64-bit](https://github.com/NetBSD/src/blob/netbsd-9/sys/arch/evbarm/conf/GENERIC64#L20) device trees.
1.77      gdt        68: 
1.88    ! nia        69: ### QEMU
1.77      gdt        70: 
1.88    ! nia        71: See the [[NetBSD/evbarm under QEMU|qemu_arm]] page for instructions on how to get started with QEMU.
1.77      gdt        72: 
1.88    ! nia        73: ### anita
1.77      gdt        74: 
1.88    ! nia        75: 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.
1.77      gdt        76: 
1.88    ! nia        77:  - evbarm-earmv7hf uses "qemu-system-arm -M vexpress-a15"
        !            78:  - evbarm-aarch64 uses "qemu-system-aarch64 -M virt"
        !            79:  - Information on how to test emulated versions of other specific hardware is welcome.
1.1       mspo       80: 
                     81: [[!tag tier1port]]