Annotation of wikisrc/ports/evbarm/odroid-c1.mdwn, revision 1.32

1.22      wiki        1: [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1 and ODROID-C1+"]]
1.1       wiki        2: 
1.30      snj         3: [ODROID-C1](https://www.hardkernel.com/shop/odroid-c1-2/) 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+](https://www.hardkernel.com/shop/odroid-c1/), which is supported by the same NetBSD kernel.
1.13      wiki        4: 
1.1       wiki        5: [[!toc levels=2]]
                      6: 
1.2       wiki        7: # Supported hardware
1.6       wiki        8:  - CPU: Cortex-A5: Amlogic S805 (4-core) at 1.5GHz
1.2       wiki        9:    - CPU frequency scaling is supported with machdep.cpu sysctl tree
                     10:    - SMP supported
                     11:    - PL310 L2 cache controller
                     12:  - GIC
                     13:  - A5 global timer
1.23      wiki       14:  - Watchdog timer
1.16      wiki       15:  - "SDHC" and "SDIO" SD/MMC controllers (DMA)
1.2       wiki       16:  - Serial console
1.7       wiki       17:  - Framebuffer console
1.2       wiki       18:  - USB host (OTG)
                     19:  - Gigabit Ethernet (GMAC)
                     20:    - RTL8211F PHY
                     21:  - Hardware random number generator
1.11      wiki       22:  - RTC
1.15      wiki       23:  - GPIO
1.2       wiki       24: 
                     25: # TODO
                     26:  - USB device mode
                     27:  - IR receiver
                     28:  - I2C
1.7       wiki       29:  - Audio
1.2       wiki       30: 
1.29      wiki       31: # Installation (NetBSD 8.0 and later)
1.28      jmcneill   32: 
1.31      wiki       33: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img*, the latest is [[here|https://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/latest/evbarm-earmv7hf/binary/gzimg/armv7.img]].
1.32    ! wiki       34: * Build U-Boot for ODROID-C1 <hhttps://github.com/jaredmcneill/u-boot-odroid>
        !            35:   * Pre-built binaries here:
        !            36:    <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
        !            37:    <http://www.netbsd.org/~jmcneill/u-boot.bin.odroidc1>
1.28      jmcneill   38: * Write the bootloader to the empty space at the start of the base image:
                     39: [[!template  id=programlisting text="""
                     40: # dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc
                     41: # dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc
1.32    ! wiki       42: # dd if=u-boot.bin.odroidc1 of=armv7.img bs=512 seek=64 conv=notrunc
1.28      jmcneill   43: """]]
                     44: * Write the image to an SD card.
                     45: 
                     46: # Installation (NetBSD 7.0/7.1)
1.2       wiki       47: 
1.20      wiki       48: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img*
1.2       wiki       49: * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>
1.3       wiki       50:   * Pre-built binaries here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
1.27      sevan      51: * Note the location and size of the FFS partition in the *armv7.img* disklabel:
1.4       wiki       52: [[!template  id=programlisting text="""
1.20      wiki       53: # $TOOLDIR/bin/nbdisklabel -M evbarm -B le armv7.img
1.4       wiki       54: ...
                     55: 8 partitions:
                     56: #        size    offset     fstype [fsize bsize cpg/sgs]
                     57:  a:   1359312    385024     4.2BSD      0     0     0  # (Cyl.    188 -    851*)
                     58:  b:    262144    122880       swap                     # (Cyl.     60 -    187)
                     59:  c:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
                     60:  d:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
                     61:  e:    114688      8192      MSDOS                     # (Cyl.      4 -     59)
                     62: """]]
1.2       wiki       63: * Write the bootloader to the empty space at the start of the base image:
                     64: [[!template  id=programlisting text="""
1.20      wiki       65: # dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc
                     66: # dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc
                     67: # dd if=u-boot.bin of=armv7.img bs=512 seek=64 conv=notrunc
1.2       wiki       68: """]]
1.4       wiki       69: * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table:
                     70: [[!template  id=programlisting text="""
1.20      wiki       71: # $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u armv7.img
1.4       wiki       72: ...
                     73: Which partition do you want to change?: [none] 1
                     74: The data for partition 1 is:
                     75: <UNUSED>
                     76: sysid: [0..255 default: 169] 
                     77: start: [0..109cyl default: 63, 0cyl, 0MB] 385024
                     78: size: [0..85cyl default: 1359312, 85cyl, 664MB] 1359312
                     79: ...
                     80: Which partition do you want to change?: [none] 
                     81: ...
                     82: Should we write new partition table? [n] y
                     83: """]]
1.2       wiki       84: * Write the image to an SD card.
1.21      wiki       85: * Edit *boot.ini* on the MS-DOS partition. Note that the default boot.ini has `console=fb` in `bootargs`, which you should remove if you want serial console:
1.2       wiki       86: [[!template  id=programlisting text="""
                     87: ODROIDC-UBOOT-CONFIG
                     88: 
1.21      wiki       89: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr} console=fb"
1.2       wiki       90: setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
                     91: run bootcmd
1.21      wiki       92: """]] 
                     93: 
1.5       wiki       94: * On first boot, it will stop because of the wrong device in /etc/fstab. Take this opportunity to grow the root file-system:
1.4       wiki       95: [[!template  id=programlisting text="""
                     96: # fdisk -u ld0
                     97: ...
                     98: Which partition do you want to change?: [none] 1
                     99: The data for partition 1 is:
                    100: NetBSD (sysid 169)
                    101:     start 385024, size 1359312 (664 MB, Cyls 23/246/32-108/147/55)
                    102:         PBR is not bootable: All bytes are identical (0x00)
                    103: sysid: [0..255 default: 169]
                    104: start: [0..966cyl default: 385024, 24cyl, 188MB]
                    105: size: [0..942cyl default: 1359312, 85cyl, 664MB] $
                    106: ...
                    107: Which partition do you want to change?: [none]
                    108: ...
                    109: Should we write new partition table? [n] y
                    110: # resize_ffs -y /dev/rld0f
                    111: # reboot
                    112: """]]
                    113: * Next boot, create a new /etc/fstab:
                    114: [[!template  id=programlisting text="""
                    115: # mount -u -o rw /dev/ld0f /
                    116: # cat > /etc/fstab << EOF
                    117: /dev/ld0f       /               ffs     rw      1 1
                    118: /dev/ld0e       /boot           msdos   rw      1 1
                    119: kernfs          /kern           kernfs  rw
                    120: ptyfs           /dev/pts        ptyfs   rw
                    121: procfs          /proc           procfs  rw
                    122: tmpfs           /var/shm        tmpfs   rw,-m1777,-sram%25
                    123: EOF
                    124: # reboot
                    125: """]]
1.2       wiki      126: 
1.9       wiki      127: # HDMI
                    128: 
1.10      wiki      129: ## Framebuffer console
                    130: 
                    131: Simply add **console=fb** to the *bootargs* variable in *boot.ini*.
                    132: 
1.9       wiki      133: ## Video mode
                    134: 
                    135: HDMI video mode can be selected in U-Boot with the *video* command, e.g.:
                    136: 
                    137: [[!template  id=programlisting text="""
                    138: odroidc#video dev open 1080P
                    139: """]]
                    140: 
                    141: To make this change permanent, add it to the *bootcmd* variable in *boot.ini*:
                    142: 
                    143: [[!template  id=programlisting text="""
                    144: setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
                    145: """]]
                    146: 
1.14      wiki      147: ## 16 or 24 bpp?
                    148: 
                    149: 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>.
                    150: 
1.9       wiki      151: ## Overscan compensation
1.8       wiki      152: 
                    153: 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.:
                    154: 
                    155: [[!template  id=programlisting text="""
                    156: # sysctl -w hw.genfb0.scale=95
                    157: """]]
                    158: 
                    159: Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed.
                    160: 
                    161: To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*.
                    162: 
1.15      wiki      163: # SYS_LED
                    164: 
                    165: 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*:
                    166: 
                    167: [[!template  id=programlisting text="""
                    168: gpio4 13 set out sys_led
                    169: """]]
                    170: 
                    171: After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]].
                    172: 
                    173: [[!template  id=programlisting text="""
                    174: # turn the light on
                    175: gpioctl gpio4 sys_led on
                    176: 
                    177: # turn the light off
                    178: gpioctl gpio4 sys_led off
                    179: 
                    180: # toggle the light state
                    181: gpioctl gpio4 sys_led toggle
                    182: """]]
                    183: 
1.24      wiki      184: # U-Boot Environment
                    185: 
                    186: To read/write U-Boot environment variables from NetBSD, download and compile the following program: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/uenv.c>
                    187: 
1.25      wiki      188: # Automatically booting a backup kernel
                    189: 
                    190: *These instructions assume the kernels live on eMMC. Adjust devices accordingly for SD card setup.*
                    191: 
                    192: To setup an ODROID-C1 to fall back to a recovery kernel in the event of a boot failure, install the recovery kernel as /boot/onetbsd.ub.
                    193: 
                    194: Create /boot/boot.ini as follows:
                    195: [[!template  id=programlisting text="""
                    196: ODROIDC-UBOOT-CONFIG
                    197: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}"
                    198: fatload mmc 0:1 0x22000000 boot.scr
                    199: source 0x22000000
                    200: """]]
                    201: 
                    202: Create /boot/boot.txt:
                    203: [[!template  id=programlisting text="""
                    204: # regenerate with:
                    205: #  mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" boot.txt boot.scr
                    206: 
                    207: setenv rescue_kernel "onetbsd.ub"
                    208: setenv kernel "netbsd.ub"
                    209: 
                    210: if test ${boot_rescue} = false; then
                    211:   setenv boot_rescue true
                    212:   saveenv
                    213:   fatload mmc 0:1 0x21000000 ${kernel}
                    214:   mw.l c1109900 0f08ffff        # arm watchdog
                    215:   bootm 0x21000000
                    216: else
                    217:   fatload mmc 0:1 0x21000000 ${rescue_kernel}
                    218:   bootm 0x21000000
                    219: fi
                    220: """]]
                    221: 
                    222: Generate boot.scr from boot.txt:
                    223: [[!template  id=programlisting text="""
                    224: mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" /boot/boot.txt /boot/boot.scr
                    225: """]]
                    226: 
                    227: Install the **uenv** tool from above and add the following to root's crontab:
                    228: [[!template  id=programlisting text="""
                    229: @reboot                                 /usr/local/sbin/uenv ld0 boot_rescue false
                    230: """]]
                    231: 
1.12      wiki      232: # Documentation
                    233: 
                    234: Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
                    235: 
1.1       wiki      236: # ODROID-C1 UART pins
                    237: 
                    238: From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):
                    239: 
                    240: [[!template  id=programlisting text="""
                    241:  ___UART____
                    242: |Pin 4 - GND|
                    243: |Pin 3 - RXD|
                    244: |Pin 2 - TXD|
                    245: |Pin 1 - VCC|
                    246: \___________|
                    247: 
                    248: 3.3V LVTTL
                    249: """]]
1.26      leot      250: 

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