Diff for /wikisrc/ports/evbarm/odroid-c1.mdwn between versions 1.2 and 1.20

version 1.2, 2015/03/08 13:34:37 version 1.20, 2015/10/28 18:05:41
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 [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1"]]  [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1"]]
   
   [ODROID-C1](http://www.hardkernel.com/main/products/prdt_info.php?g_code=G141578608433&tab_idx=1) was a $35 quad-core SBC from Hardkernel. ODROID-C1 support was introduced in NetBSD 7.0.  It has been succeeded by the [ODROID-C1+](http://www.hardkernel.com/main/products/prdt_info.php?g_code=G143703355573), which is supported by the same NetBSD kernel.
   
 [[!toc levels=2]]  [[!toc levels=2]]
   
 # Supported hardware  # Supported hardware
  - CPU: Cortex-A5: S805 (4-core) at 1.5GHz   - CPU: Cortex-A5: Amlogic S805 (4-core) at 1.5GHz
    - CPU frequency scaling is supported with machdep.cpu sysctl tree     - CPU frequency scaling is supported with machdep.cpu sysctl tree
    - SMP supported     - SMP supported
    - PL310 L2 cache controller     - PL310 L2 cache controller
  - GIC   - GIC
  - A5 watchdog timer   - A5 watchdog timer
  - A5 global timer   - A5 global timer
  - SD/MMC controller (DMA)   - "SDHC" and "SDIO" SD/MMC controllers (DMA)
  - Serial console   - Serial console
    - Framebuffer console
  - USB host (OTG)   - USB host (OTG)
  - Gigabit Ethernet (GMAC)   - Gigabit Ethernet (GMAC)
    - RTL8211F PHY     - RTL8211F PHY
  - Hardware random number generator   - Hardware random number generator
    - RTC
    - GPIO
   
 # TODO  # TODO
  - USB device mode   - USB device mode
  - Simultaneous SD card and eMMC usage  
  - SD/MMC UHS-I support (needs sdmmc(4) changes)  
  - HDMI / framebuffer  
  - IR receiver   - IR receiver
  - GPIO  
  - I2C   - I2C
    - Audio
   
 # Installation  # Installation
   
 * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *beagleboard.img*  * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img*
 * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>  * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>
     * Pre-built binaries here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
   * Note the location and size of the FFS partition in the * armv7.img* disklabel:
   [[!template  id=programlisting text="""
   # $TOOLDIR/bin/nbdisklabel -M evbarm -B le armv7.img
   ...
   8 partitions:
   #        size    offset     fstype [fsize bsize cpg/sgs]
    a:   1359312    385024     4.2BSD      0     0     0  # (Cyl.    188 -    851*)
    b:    262144    122880       swap                     # (Cyl.     60 -    187)
    c:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
    d:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
    e:    114688      8192      MSDOS                     # (Cyl.      4 -     59)
   """]]
 * Write the bootloader to the empty space at the start of the base image:  * Write the bootloader to the empty space at the start of the base image:
 [[!template  id=programlisting text="""  [[!template  id=programlisting text="""
 # dd if=bl1.bin.hardkernel of=beagleboard.img bs=1 count=442 conv=notrunc  # dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc
 # dd if=bl1.bin.hardkernel of=beagleboard.img bs=512 skip=1 seek=1 conv=notrunc  # dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc
 # dd if=u-boot.bin of=beagleboard.img bs=512 seek=64 conv=notrunc  # dd if=u-boot.bin of=armv7.img bs=512 seek=64 conv=notrunc
   """]]
   * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table:
   [[!template  id=programlisting text="""
   # $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u armv7.img
   ...
   Which partition do you want to change?: [none] 1
   The data for partition 1 is:
   <UNUSED>
   sysid: [0..255 default: 169] 
   start: [0..109cyl default: 63, 0cyl, 0MB] 385024
   size: [0..85cyl default: 1359312, 85cyl, 664MB] 1359312
   ...
   Which partition do you want to change?: [none] 
   ...
   Should we write new partition table? [n] y
 """]]  """]]
 * Write the image to an SD card.  * Write the image to an SD card.
 * Copy the kernel (netbsd.ub) for your board to the root of the MS-DOS partition on the SD card.  * Copy the kernel (netbsd.ub) for your board to the root of the MS-DOS partition on the SD card.
 * Create or edit boot.ini on the MS-DOS partition:  * Create or edit *boot.ini* on the MS-DOS partition:
 [[!template  id=programlisting text="""  [[!template  id=programlisting text="""
 ODROIDC-UBOOT-CONFIG  ODROIDC-UBOOT-CONFIG
   
 setenv m "1080p"  setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}"
 setenv vout_mode "hdmi"  
 setenv m_bpp "32"  
 setenv disableuhs "disableuhs"  
 setenv bootargs "root=ld0a awge0.mac-address=${ethaddr}"  
 setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"  setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
 run bootcmd  run bootcmd
 """]]  """]]
   * On first boot, it will stop because of the wrong device in /etc/fstab. Take this opportunity to grow the root file-system:
   [[!template  id=programlisting text="""
   # fdisk -u ld0
   ...
   Which partition do you want to change?: [none] 1
   The data for partition 1 is:
   NetBSD (sysid 169)
       start 385024, size 1359312 (664 MB, Cyls 23/246/32-108/147/55)
           PBR is not bootable: All bytes are identical (0x00)
   sysid: [0..255 default: 169]
   start: [0..966cyl default: 385024, 24cyl, 188MB]
   size: [0..942cyl default: 1359312, 85cyl, 664MB] $
   ...
   Which partition do you want to change?: [none]
   ...
   Should we write new partition table? [n] y
   # resize_ffs -y /dev/rld0f
   # reboot
   """]]
   * Next boot, create a new /etc/fstab:
   [[!template  id=programlisting text="""
   # mount -u -o rw /dev/ld0f /
   # cat > /etc/fstab << EOF
   /dev/ld0f       /               ffs     rw      1 1
   /dev/ld0e       /boot           msdos   rw      1 1
   kernfs          /kern           kernfs  rw
   ptyfs           /dev/pts        ptyfs   rw
   procfs          /proc           procfs  rw
   tmpfs           /var/shm        tmpfs   rw,-m1777,-sram%25
   EOF
   # reboot
   """]]
   
   # HDMI
   
   ## Framebuffer console
   
   Simply add **console=fb** to the *bootargs* variable in *boot.ini*.
   
   ## Video mode
   
   HDMI video mode can be selected in U-Boot with the *video* command, e.g.:
   
   [[!template  id=programlisting text="""
   odroidc#video dev open 1080P
   """]]
   
   To make this change permanent, add it to the *bootcmd* variable in *boot.ini*:
   
   [[!template  id=programlisting text="""
   setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
   """]]
   
   ## 16 or 24 bpp?
   
   ODROID-C1 defaults to 16bpp. If you want to try 24bpp, add **fb.depth=24** to the kernel cmdline options in *boot.ini*. There are some issues with 24bpp mode and Xorg; see <http://gnats.netbsd.org/49812>.
   
   ## Overscan compensation
   
   If you have ODROID-C1 plugged into a TV, the edges of the screen may not be visible. You can scale down the framebuffer console with the **hw.genfb0.scale** sysctl, e.g.:
   
   [[!template  id=programlisting text="""
   # sysctl -w hw.genfb0.scale=95
   """]]
   
   Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed.
   
   To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*.
   
   # SYS_LED
   
   The blue SYS_LED on the board is wired to GPIOAO_13. To control the LED from userland, set **gpio=YES** in rc.conf and add this to */etc/gpio.conf*:
   
   [[!template  id=programlisting text="""
   gpio4 13 set out sys_led
   """]]
   
   After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]].
   
   [[!template  id=programlisting text="""
   # turn the light on
   gpioctl gpio4 sys_led on
   
   # turn the light off
   gpioctl gpio4 sys_led off
   
   # toggle the light state
   gpioctl gpio4 sys_led toggle
   """]]
   
   # Documentation
   
   Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
   
 # ODROID-C1 UART pins  # ODROID-C1 UART pins
   

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  Added in v.1.20


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