--- wikisrc/ports/evbarm.mdwn 2012/04/29 13:46:32 1.1 +++ wikisrc/ports/evbarm.mdwn 2019/06/27 17:29:39 1.79 @@ -1,46 +1,127 @@ [[!template id=port port="evbarm" -cur_rel="5.1.2" -future_rel="6.0" -changes_cur="5.0" -changes_future="6.0" -thumbnail="http://www.netbsd.org/images/ports/evbarm/adi_brh.gif" +port_alt="arm" +port_var1="earm" +port_var2="earmeb" +port_var3="earmv6hf" +port_var4="earmv7hf" +port_var5="earmv7hfeb" +port_var_install_notes="evbarm-earm" +cur_rel="8.1" +future_rel="9.0" +changes_cur="8.1" +changes_future="9.0" +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. -Jason Thorpe is the maintainer of NetBSD/evbarm. +### CPU types + +The evbarm port can be built with a variety of CPU options, corresponding to the +[large array of ARM CPU architectures](https://en.wikipedia.org/wiki/ARM_architecture#Cores). +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), 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 +endian, and hardware floating point. + +Typically, various boards are best compiled with a CPU type that +matches the board's CPU and floating point support, but generally a +lower CPU instruction set version is workable on a newer board. See +build.sh and look for aliases for the evbarm port. + +Through NetBSD 8, the evbarm port has supported exclusively the +aarch32 (32-bit CPU) sub-family of the ARM architecture. Some +processors, such as many supporting the armv8 CPU architecture, also +support a 64-bit instruction set, referred to as aarch64. This is +sometimes referred to as a distinct port, [[NetBSD/aarch64|aarch64]], +with code in src/sys/arch/aarch64, but it is built as the evbarm port +with aarch64 cpu type, and available as the alias evbarm64. + +Note that MACHINE_ARCH=aarch64 currently refers to the A64 instruction +set and the aarch64 architecture, built for the armv8 architecture. +(Note also that armv8 is the first architecture to support aarch64, so +this will not be an issue until at least armv9.) + +### 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. + + - evbarm-earmv7hf uses "qemu-system-arm -M vexpress-a15" + - evbarm-aarch64 uses "qemu-system-aarch64 -M virt" + - Information on how to test emulated versions of other specific hardware is welcome. + +### 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 + - [[Allwinner sunxi family SoCs|Allwinner]] + - [[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=""" - * Technologic Systems **TS-7200** -The TS-7200 is a low-cost mass-produced PC/104 embedded single board computer -intended as a general purpose core for real embedded applications. The TS-7200 -uses the Cirrus Logic EP9302 ARM9 system-on-chip and comes with a PC/104 (isa) -bus and can either boot to CompactFlash or onboard flash. The board also has -general purpose digital IO and optional multichannel analog-to-digital -converters. More information on the TS-7200 can be found at [Technologic -Systems](http://www.embeddedarm.com/epc/ts7200-spec-h.html). +**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). -Support for the TS-7200 was written by Jesse Off +[[!toc startlevel=3]] + +### ADI Engineering **BRH** ("Big Red Head") + +The BRH is an evaluation and development platform for the Intel **i80200** +XScale processor. The BRH is based on ADI's **BECC** ("Big Endian Companion +Chip"). The BRH is capable of both big- and little-endian operation, although +NetBSD currently only supports little-endian operation. - * On-CPU RS232 UARTs (2) (_epcom_) - * On-CPU 10/100 Ethernet MAC (_epe_) - * CompactFlash socket (_wdc_) - * USB 1.1 ports (2) (_ohci_) - * Watchdog timer on CPLD (_tspld_) - * TMP124 high precision temperature sensor via sysctl - * 64Hz system clock from on-CPU timers (_epclk_) - * HD44780 2x24 text mode LCD (_tslcd_) - * 4x4 16 button matrix keypad (_wskbd_) - * TS-5620 battery backed RTC daughter-card (_tsrtc_) - * 1,2,4 port serial TS-SER daughter cards (_com_) - * Up to 4 10Mb TS-ETH10 daughter cards (_tscs_) - * Other devices inserted into the PC/104 (_isa_) expansion slot +Support for the BRH was written by Jason Thorpe, and contributed by Wasabi +Systems, Inc. + + * On-board NS16550-compatible serial ports (_com_) + * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) + * On-chip timer on the BECC (used as system clock) + * Other devices inserted into the PCI slot + +The BRH comes with 128M of SDRAM. Systems with BECC revision 7 or less are +limited to 64M due to the layout of the PCI DMA windows. Users of these +systems should obtain an FPGA upgrade from ADI to revision 8 or later of the +BECC. + +### Allwinner Technology +Various boards based on [[Allwinner]] SoCs are supported, including the BananaPi, Cubieboard 2, Cubietruck, Cubieboard 4, and Merrii Hummingbird A31. - * ARM, Ltd. **Integrator** +### Arcom **Viper** + +The Arcom Viper is a single board computer based on the PXA255 XScale +processor. + +Support for the Arcom Viper was written by Antti Kantee. + + * On-chip timers (_saost_ used as system clock) + * On-chip serial ports (_com_) + * On-board SMC91C111 ethernet (_sm_) + +### ARM, Ltd. **Integrator** The Integrator/AP is an ATX form-factor board that is used for development of ARM processor-based designs. It supports up to four processors on plug-in core @@ -52,141 +133,133 @@ Integrator/AP can also be inserted into Support for the Integrator was written by Richard Earnshaw, and contributed by ARM, Ltd. - * PrimeCell PL010 UARTs in the System Controller FPGA (_plcom_) - * PrimeCell PL030 Real-time Clock in the System Controller FPGA (_plrtc_) - * Other devices inserted into the PCI expansion slots + * PrimeCell PL010 UARTs in the System Controller FPGA (_plcom_) + * PrimeCell PL030 Real-time Clock in the System Controller FPGA (_plrtc_) + * PrimeCell PL181 MultiMedia Card Interface + * Other devices inserted into the PCI expansion slots - * Intel **IQ31244** +### Atmark Techno **Armadillo-9** -The IQ31244 is a development platform for the Intel **IOP321** I/O Processor -chipset and the Intel **i31244** SATA controller. +The Armadillo-9 is a single board computer based on the EP9315 processor. -Initial support for the IQ31244 was written by Jason Thorpe, and contributed -by Wasabi Systems, Inc. +Support for the Armadillo-9 was written by Katsuomi Hamajima. - * Quad on-board Intel i31244 SATA controllers on the PCI-X bus (_artsata_) - * On-board Intel i82546EB Gigabit Ethernet on the PCI-X bus (_wm_) - * On-board NS16550-compatible serial port (_com_) - * On-chip timers (TMR0 used as system clock) - * On-chip Application Accelerator Unit (_iopaau_) - * On-chip watchdog timer (_iopwdog_) - * On-board compact flash reader (_wdc_) - * Other devices inserted into the PCI-X expansion slot + * On-CPU RS232 UARTs (2) (_epcom_) + * On-CPU 10/100 Ethernet MAC (_epe_) + * system clock from on-CPU timers (_epclk_) + * CompactFlash socket (_eppcic_) + * USB 1.1 ports (_ohci_) - * Intel **IQ80310** +### BeagleBoard.org **BeagleBoard** and **BeagleBoard-xM** +The [[BeagleBoard]] is a low-power open-source hardware single-board computer from BeagleBoard.org. -The IQ80310 is the reference platform for the Intel **IOP310** I/O Processor -chipset, which is comprised of the i80200 XScale processor and the i80312 I/O -Companion chip. +### BeagleBoard.org **BeagleBone** and **BeagleBone Black** +The [[BeagleBone]] is a low-cost credit-card-sized computer from BeagleBoard.org. -Support for the IQ80310 was written by Jason Thorpe and Allen Briggs, and -contributed by Wasabi Systems, Inc. +### Gumstix, Inc. **gumstix** - * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) - * On-board timer in the CPLD (used as system clock) - * On-board NS16550-compatible serial ports (_com_) - * Other devices inserted into the PCI expansion slots +The [gumstix](http://www.gumstix.com/) is a small form-factor motherboard +based on the PXA255 and PXA270 XScale processor. Supports only PXA255 now. - * Intel **IQ80321** +Support for the gumstix was written by KIYOHARA Takashi. -The IQ80321 is the reference platform for the Intel **IOP321** I/O Processor -(i80321 XScale processor). + * basix + * cfstix + * etherstix + * netCF + * netDUO + * netDUO-mmc + * netMMC -Support for the IQ80321 was written by Jason Thorpe, and contributed by Wasabi -Systems, Inc. +When booting, it is necessary to set these with u-boot dynamically. - * On-board Intel i82544EI Gigabit Ethernet on the PCI-X bus (_wm_) - * On-board NS16550-compatible serial port (_com_) - * On-chip timers (TMR0 used as system clock) - * On-chip Application Accelerator Unit (_iopaau_) - * On-chip watchdog timer (_iopwdog_) - * Other devices inserted into the PCI-X expansion slots +
 > go 0xa0200000 busheader=basix
- * Team ASA, Inc. **Npwr** + * audiostix + * console-st (waysmall - STUART) + * console-hw (waysmall) + * GPSstix (GPS not test) + * tweener -The Npwr is an IOP310-based design targeted at the network-attached storage -space. The Npwr comes in several configurations (single or dual Gigabit -Ethernet, single or dual Ultra160 SCSI), and can be purchased as a bare board -or as a small server appliance. More information on the Npwr can be found at -the [Team ASA web page](http://www.teamasa.com/). +### Hardkernel ODROID-C1 and ODROID-C1+ -Support for the Npwr was written by Jason Thorpe and Allen Briggs, and -contributed by Wasabi Systems, Inc. +The [[ODROID-C1]] is a quad core Cortex-A5 small form-factor board from Hardkernel co., Ltd. - * On-board Intel i82544 Gigabit Ethernet on the PCI bus (_wm_) - * On-board LSI Logic 53c1010 Ultra160 SCSI on the PCI bus (_siop_) - * On-board timer in the CPLD (used as system clock) - * On-board NS16550-compatible serial port (_com_) +### Intel **DBPXA250** ("Lubbock") - * Intel **IXM1200** +DBPXA250 (a.k.a. Lubbock) is an evaluation and development platform for the +Intel **PXA250** XScale Core application processor. More information about the **DBPXA250** can be found at [Intel website](http://www.intel.com/design/pca/applicationsprocessors/swsup/index.htm). -The IXM1200 is the reference platform for the Intel **IXP1200** Network -Processor. +Support for the **DBPXA250** was written by Hiroyuki Bessho, and contributed +by Genetec Corp. -Support for the IXM1200 was written by Ichiro FUKUHARA and Naoto Shimazaki. + * On-chip timers (_saost_ used as system clock) + * On-chip 2 serial port (_com_) + * On-board SMC91C96 ethernet (_sm_) + * On-board SA-1111 StrongArm companion chip (_sacc_) + * PS/2 keyboard (_pckbd_) + * 640x480 LCD (_lcd_) + * PCMCIA and CF card slots - * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) - * On-board Intel i21555 Non-Transparent PCI-PCI Bridge (_nppb_) - * On-chip timers (ixpclk0 used as system clock) - * On-chip serial port (_ixpcom_) +### Intel **IQ31244** - * Samsung **SMDK2410** +The IQ31244 is a development platform for the Intel **IOP321** I/O Processor +chipset and the Intel **i31244** SATA controller. -The SMDK2410 is the reference platform for the Samsung **S3C2410** processor, -which has an ARM920T core. +Initial support for the IQ31244 was written by Jason Thorpe, and contributed +by Wasabi Systems, Inc. -More information on the S3C2410 can be found at [Samsung Electronics web page] -(http://www.samsung.com/Products/Semiconductor/MobileSoC/ApplicationProcessor/ -ARM9Series/S3C2410/S3C2410.htm). + * Quad on-board Intel i31244 SATA controllers on the PCI-X bus (_artsata_) + * On-board Intel i82546EB Gigabit Ethernet on the PCI-X bus (_wm_) + * On-board NS16550-compatible serial port (_com_) + * On-chip timers (TMR0 used as system clock) + * On-chip Application Accelerator Unit (_iopaau_) + * On-chip watchdog timer (_iopwdog_) + * On-board compact flash reader (_wdc_) + * Other devices inserted into the PCI-X expansion slot -Support for the SMDK2410 was written by Hiroyuki Bessho, and contributed by -Genetec Corp. +### Intel **IQ80310** - * On-chip serial ports (_sscom_) - * On-chip USB host controller (_ohc_) - * On-chip timers (used as system clock) - * On-chip SPI (_ssspi_, used for other on-board devices) - * 240x320 TFT LCD (_lcd_) - * keyboard. (_sskbd_) +The IQ80310 is the reference platform for the Intel **IOP310** I/O Processor +chipset, which is comprised of the i80200 XScale processor and the i80312 I/O +Companion chip. - * Samsung **SMDK2800** +Support for the IQ80310 was written by Jason Thorpe and Allen Briggs, and +contributed by Wasabi Systems, Inc. -The SMDK2800 is the reference platform for the **Samsung S3C2800** processor, -which has an ARM920T core. + * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) + * On-board timer in the CPLD (used as system clock) + * On-board NS16550-compatible serial ports (_com_) + * Other devices inserted into the PCI expansion slots -S3C2800 has built-in PCI controller, and SMDK2800 has three PCI slots. +### Intel **IQ80321** -Support for the SMDK2800 was written by Hiroyuki Bessho, and contributed by -Fujitsu Component Ltd., and Genetec Corp. +The IQ80321 is the reference platform for the Intel **IOP321** I/O Processor +(i80321 XScale processor). - * On-chip serial ports (_sscom_) - * On-chip Host-PCI bridge (_sspci_) - * On-chip timers (used as system clock) - * Other devices inserted into the PCI slots +Support for the IQ80321 was written by Jason Thorpe, and contributed by Wasabi +Systems, Inc. - * ADI Engineering **BRH** ("Big Red Head") + * On-board Intel i82544EI Gigabit Ethernet on the PCI-X bus (_wm_) + * On-board NS16550-compatible serial port (_com_) + * On-chip timers (TMR0 used as system clock) + * On-chip Application Accelerator Unit (_iopaau_) + * On-chip watchdog timer (_iopwdog_) + * Other devices inserted into the PCI-X expansion slots -The BRH is an evaluation and development platform for the Intel **i80200** -XScale processor. The BRH is based on ADI's **BECC** ("Big Endian Companion -Chip"). The BRH is capable of both big- and little-endian operation, although -NetBSD currently only supports little-endian operation. More information about -the BRH can be found on [ADI Engineering's web -page](http://www.adiengineering.com/productsBRH.html). +### Intel **IXM1200** -Support for the BRH was written by Jason Thorpe, and contributed by Wasabi -Systems, Inc. +The IXM1200 is the reference platform for the Intel **IXP1200** Network +Processor. - * On-board NS16550-compatible serial ports (_com_) - * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) - * On-chip timer on the BECC (used as system clock) - * Other devices inserted into the PCI slot +Support for the IXM1200 was written by Ichiro FUKUHARA and Naoto Shimazaki. -The BRH comes with 128M of SDRAM. Systems with BECC revision 7 or less are -limited to 64M due to the layout of the PCI DMA windows. Users of these -systems should obtain an FPGA upgrade from ADI to revision 8 or later of the -BECC. + * On-board Intel i82559 Ethernet on the PCI bus (_fxp_) + * On-board Intel i21555 Non-Transparent PCI-PCI Bridge (_nppb_) + * On-chip timers (ixpclk0 used as system clock) + * On-chip serial port (_ixpcom_) - * NOVATEC **NTNP425B** ("ZAO425") +### NOVATEC **NTNP425B** ("ZAO425") NTNP425B is an evaluation and development platform for the Intel **IXP425** XScale Core NetworkProcessor. NTNP425B is based on the reference board of @@ -198,81 +271,98 @@ file)](http://www.novatec.co.jp/NTNP425B Support for the NTNP425B was written by Ichiro FUKUHARA. - * On-chip timers (_ixpclk0_ used as system clock) - * On-chip 2 serial port (_ixpcom0_ and _ixpcom1_) - * Other devices inserted into the PCI/mPCI slot - * On-chip watchdog timer (_ixpwdog_) + * On-chip timers (_ixpclk0_ used as system clock) + * On-chip 2 serial port (_ixpcom0_ and _ixpcom1_) + * Other devices inserted into the PCI/mPCI slot + * On-chip watchdog timer (_ixpwdog_) + +### NVIDIA Tegra K1 +Support for NVIDIA [[Tegra]] K1 SoCs is present in NetBSD-current and +8.0_BETA. The Jetson TK1 board is currently supported. - * Intel **DBPXA250** ("Lubbock") +### 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. -DBPXA250 (a.k.a. Lubbock) is an evaluation and development platform for the -Intel **PXA250** XScale Core application processor. More information about the -**DBPXA250** can be found at [Intel web -site](http://www.intel.com/design/pca/applicationsprocessors/swsup/index.htm). +### Samsung **SMDK2410** -Support for the **DBPXA250** was written by Hiroyuki Bessho, and contributed -by Genetec Corp. +The SMDK2410 is the reference platform for the Samsung **S3C2410** processor, +which has an ARM920T core. - * On-chip timers (_saost_ used as system clock) - * On-chip 2 serial port (_com_) - * On-board SMC91C96 ethernet (_sm_) - * On-board SA-1111 StrongArm companion chip (_sacc_) - * PS/2 keyboard (_pckbd_) - * 640x480 LCD (_lcd_) - * PCMCIA and CF card slots +More information on the S3C2410 can be found at [Samsung Electronics web page] +(http://www.samsung.com/Products/Semiconductor/MobileSoC/ApplicationProcessor/ +ARM9Series/S3C2410/S3C2410.htm). - * Arcom **Viper** +Support for the SMDK2410 was written by Hiroyuki Bessho, and contributed by +Genetec Corp. -The Arcom Viper is a single board computer based on the PXA255 XScale -processor. + * On-chip serial ports (_sscom_) + * On-chip USB host controller (_ohc_) + * On-chip timers (used as system clock) + * On-chip SPI (_ssspi_, used for other on-board devices) + * 240x320 TFT LCD (_lcd_) + * keyboard. (_sskbd_) -Support for the Arcom Viper was written by Antti Kantee. +### Samsung **SMDK2800** + +The SMDK2800 is the reference platform for the **Samsung S3C2800** processor, +which has an ARM920T core. - * On-chip timers (_saost_ used as system clock) - * On-chip serial ports (_com_) - * On-board SMC91C111 ethernet (_sm_) +S3C2800 has built-in PCI controller, and SMDK2800 has three PCI slots. - * Atmark Techno **Armadillo-9** +Support for the SMDK2800 was written by Hiroyuki Bessho, and contributed by +Fujitsu Component Ltd., and Genetec Corp. -The Armadillo-9 is a single board computer based on the EP9315 processor. + * On-chip serial ports (_sscom_) + * On-chip Host-PCI bridge (_sspci_) + * On-chip timers (used as system clock) + * Other devices inserted into the PCI slots -Support for the Armadillo-9 was written by Katsuomi Hamajima. +### Team ASA, Inc. **Npwr** - * On-CPU RS232 UARTs (2) (_epcom_) - * On-CPU 10/100 Ethernet MAC (_epe_) - * system clock from on-CPU timers (_epclk_) - * CompactFlash socket (_eppcic_) - * USB 1.1 ports (_ohci_) +The Npwr is an IOP310-based design targeted at the network-attached storage +space. The Npwr comes in several configurations (single or dual Gigabit +Ethernet, single or dual Ultra160 SCSI), and can be purchased as a bare board +or as a small server appliance. More information on the Npwr can be found at +the [Team ASA web page](http://www.teamasa.com/). - * Gumstix, Inc. **gumstix** +Support for the Npwr was written by Jason Thorpe and Allen Briggs, and +contributed by Wasabi Systems, Inc. -The [gumstix](http://www.gumstix.com/) is a small form-factor motherboard -based on the PXA255 and PXA270 XScale processor. Supports only PXA255 now. + * On-board Intel i82544 Gigabit Ethernet on the PCI bus (_wm_) + * On-board LSI Logic 53c1010 Ultra160 SCSI on the PCI bus (_siop_) + * On-board timer in the CPLD (used as system clock) + * On-board NS16550-compatible serial port (_com_) -Support for the gumstix was written by KIYOHARA Takashi. +### Technologic Systems **TS-7200** - * basix - * cfstix - * etherstix - * netCF - * netDUO - * netDUO-mmc - * netMMC +The TS-7200 is a low-cost mass-produced PC/104 embedded single board computer +intended as a general purpose core for real embedded applications. The TS-7200 +uses the Cirrus Logic EP9302 ARM9 system-on-chip and comes with a PC/104 (isa) +bus and can either boot to CompactFlash or onboard flash. The board also has +general purpose digital IO and optional multichannel analog-to-digital +converters. More information on the TS-7200 can be found at [Technologic +Systems](http://www.embeddedarm.com/epc/ts7200-spec-h.html). -When booting, it is necessary to set these with u-boot dynamically. +Support for the TS-7200 was written by Jesse Off -> go 0xa0200000 busheader=basix +* On-CPU RS232 UARTs (2) (_epcom_) +* On-CPU 10/100 Ethernet MAC (_epe_) +* CompactFlash socket (_wdc_) +* USB 1.1 ports (2) (_ohci_) +* Watchdog timer on CPLD (_tspld_) +* TMP124 high precision temperature sensor via sysctl +* 64Hz system clock from on-CPU timers (_epclk_) +* HD44780 2x24 text mode LCD (_tslcd_) +* 4x4 16 button matrix keypad (_wskbd_) +* TS-5620 battery backed RTC daughter-card (_tsrtc_) +* 1,2,4 port serial TS-SER daughter cards (_com_) +* Up to 4 10Mb TS-ETH10 daughter cards (_tscs_) +* Other devices inserted into the PC/104 (_isa_) expansion slot - * audiostix - * console-st (waysmall - STUART) - * console-hw (waysmall) - * GPSstix (GPS not test) - * tweener """ -aditional=""" - * The [NetBSD Diskless HOWTO](/docs/network/netboot/) - * [ Porting NetBSD/evbarm to the Arcom Viper](http://www.cs.hut.fi/~pooka/pubs/EuroBSDCon2005/viper.pdf), presented at EuroBSDCon 2005. +additional=""" + * The [NetBSD Diskless HOWTO](http://www.netbsd.org/docs/network/netboot/) + * [ Porting NetBSD/evbarm to the Arcom Viper](http://www.cs.hut.fi/~pooka/pubs/EuroBSDCon2005/viper.pdf), presented at EuroBSDCon 2005. """ ]] [[!tag tier1port]] -