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Annotation of wikisrc/ports/evbarm/raspberry_pi.mdwn, revision 1.14

1.1       jakllsch    1: [[!meta title="NetBSD/evbarm on Raspberry Pi"]]
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1.3       wiki        3: [[images/raspberrypi.jpg]]
                      4: 
1.1       jakllsch    5: This page attempts to document and coordinate efforts towards NetBSD/evbarm on [Raspberry Pi](http://www.raspberrypi.org).
                      6: 
1.14    ! wiki        7: <small>([Raspberry Pi image](http://www.flickr.com/photos/42325803@N07/8118758647/) by Christopher Lee used under CC-By-2.0 license)</small>
1.3       wiki        8: 
1.7       wiki        9: # Installation
                     10:  - You may use the rpi.img file created by an arm build.
                     11:    - An example can be found in the '/evbarm/binary/gzimg/' directory under releng.netbsd.org
1.10      wiki       12:      - <i>gunzip and dd</i> this img to your sd card.
                     13: 
1.14    ! wiki       14:           dd if=rpi.img of=/dev/disk1
        !            15: 
        !            16:  - Using a serial console
        !            17:    - By default the rpi.img is set to use the HDMI output; to change mount rpi.img (it's a FAT filesystem)
        !            18: 
        !            19:           edit cmdline.txt and remove '"console=fb"'
        !            20:    - proceed with the 'dd'
        !            21: 
1.10      wiki       22:  - Growing the root file-system
                     23:    - Copy /boot/cmdline.txt to /boot/cmdline.txt.orig
                     24:    - Edit /boot/cmdline.txt and add the '-s' flag to the end of the first line of text.
                     25:    - Reboot, and at the prompt to enter the passname of shell, press
                     26:           return for the default (/bin/sh).
                     27:    - At the # prompt, type
                     28: 
                     29:         "disklabel -i ld0" and press return.
1.12      wiki       30:    - At the partition> prompt
                     31: 
                     32:            type "A" and press return. You will see
                     33:    - a message like:
1.10      wiki       34: 
                     35:            Adjust disklabel sector from 4194304 to 62333952 [n]?
                     36:            Type "y" and press return.
1.12      wiki       37:    - partition> prompt
                     38: 
                     39:            type "a" and press return.
1.11      wiki       40:            Filesystem type prompt, press return to use the current value (4.2BSD).
                     41:            Start offset prompt, press return to use the current value.
                     42:            Partition size prompt, type "$" and press return to grow the
                     43:            partition to use all available free space.
                     44: 
1.12      wiki       45:    - partition> prompt
                     46: 
                     47:            type "W" to save the changes to the disklabel.
1.11      wiki       48:            Confirm this choice by typing "y" at the Label disk prompt.
1.12      wiki       49:            Type "Q" and press return to quit disklabel.
1.11      wiki       50:    - At the # prompt, type
                     51: 
                     52:            fsck -fy /dev/rld0a
                     53:            resize_ffs -y /dev/rld0a
                     54:    - This may take a few minutes, be patient!
                     55: 
                     56:            fsck -fy /dev/rld0a
                     57:            mount /dev/ld0e /boot
                     58:            mv /boot/cmdline.txt.orig /boot/cmdline.txt
                     59:            reboot
                     60:     - When the system comes back up, the root file-system will have been expanded to
1.10      wiki       61:           fill the SD card.
1.7       wiki       62: 
                     63: # Updating the firmware
1.8       wiki       64:  - [rpi firmware files](https://github.com/raspberrypi/firmware/tree/master/boot)
                     65:    - Copy all files except 'kernel*img' into /boot and reboot
1.7       wiki       66: 
1.9       wiki       67: # Additional links
                     68:  - [ARM userland utilities](https://github.com/jaredmcneill/userland)
                     69: 
1.1       jakllsch   70: # What works
1.6       wiki       71:  - multi-user boot with root on SD card
                     72:  - serial or graphics console (with EDID query / parsing)
                     73:  - X windows.
1.4       wiki       74:  - USB (host); control, interrupt and bulk transfers. Has some stability issues that are being worked on. man page missing.
                     75:  - USB Ethernet
                     76:  - RNG: works
1.2       jakllsch   77:  - I²C: works, could use enhancements, man page
                     78:  - SPI: works, could use enhancements, man page
1.13      jmcneill   79:  - VCHIQ: work in progress. man page missing. (-current)
                     80:  - Audio: works. man page missing. (-current)
1.1       jakllsch   81: 
                     82: # What needs work
1.4       wiki       83:  - USB (host); isochronous transfers. DMA support.
                     84:  - DMA controller driver / dmover(9) backend
                     85:  - Teach sdhc(4) about dmover; not Raspberry Pi specific
                     86:  - hardfloat; not Raspberry Pi specific
                     87:  - earm ABI; not Raspberry Pi specific
1.1       jakllsch   88:  - GPIO