Annotation of wikisrc/ports/evbarm/odroid-c1.mdwn, revision 1.22

1.22    ! wiki        1: [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1 and ODROID-C1+"]]
1.1       wiki        2: 
1.19      wiki        3: [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.
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 watchdog timer
                     14:  - A5 global 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: 
                     31: # Installation
                     32: 
1.20      wiki       33: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img*
1.2       wiki       34: * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>
1.3       wiki       35:   * Pre-built binaries here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
1.20      wiki       36: * Note the location and size of the FFS partition in the * armv7.img* disklabel:
1.4       wiki       37: [[!template  id=programlisting text="""
1.20      wiki       38: # $TOOLDIR/bin/nbdisklabel -M evbarm -B le armv7.img
1.4       wiki       39: ...
                     40: 8 partitions:
                     41: #        size    offset     fstype [fsize bsize cpg/sgs]
                     42:  a:   1359312    385024     4.2BSD      0     0     0  # (Cyl.    188 -    851*)
                     43:  b:    262144    122880       swap                     # (Cyl.     60 -    187)
                     44:  c:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
                     45:  d:   1744336         0     unused      0     0        # (Cyl.      0 -    851*)
                     46:  e:    114688      8192      MSDOS                     # (Cyl.      4 -     59)
                     47: """]]
1.2       wiki       48: * Write the bootloader to the empty space at the start of the base image:
                     49: [[!template  id=programlisting text="""
1.20      wiki       50: # dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc
                     51: # dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc
                     52: # dd if=u-boot.bin of=armv7.img bs=512 seek=64 conv=notrunc
1.2       wiki       53: """]]
1.4       wiki       54: * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table:
                     55: [[!template  id=programlisting text="""
1.20      wiki       56: # $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u armv7.img
1.4       wiki       57: ...
                     58: Which partition do you want to change?: [none] 1
                     59: The data for partition 1 is:
                     60: <UNUSED>
                     61: sysid: [0..255 default: 169] 
                     62: start: [0..109cyl default: 63, 0cyl, 0MB] 385024
                     63: size: [0..85cyl default: 1359312, 85cyl, 664MB] 1359312
                     64: ...
                     65: Which partition do you want to change?: [none] 
                     66: ...
                     67: Should we write new partition table? [n] y
                     68: """]]
1.2       wiki       69: * Write the image to an SD card.
1.21      wiki       70: * Edit *boot.ini* on the MS-DOS partition. Note that the default boot.ini has `console=fb` in `bootargs`, which you should remove if you want serial console:
1.2       wiki       71: [[!template  id=programlisting text="""
                     72: ODROIDC-UBOOT-CONFIG
                     73: 
1.21      wiki       74: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr} console=fb"
1.2       wiki       75: setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
                     76: run bootcmd
1.21      wiki       77: """]] 
                     78: 
1.5       wiki       79: * 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       80: [[!template  id=programlisting text="""
                     81: # fdisk -u ld0
                     82: ...
                     83: Which partition do you want to change?: [none] 1
                     84: The data for partition 1 is:
                     85: NetBSD (sysid 169)
                     86:     start 385024, size 1359312 (664 MB, Cyls 23/246/32-108/147/55)
                     87:         PBR is not bootable: All bytes are identical (0x00)
                     88: sysid: [0..255 default: 169]
                     89: start: [0..966cyl default: 385024, 24cyl, 188MB]
                     90: size: [0..942cyl default: 1359312, 85cyl, 664MB] $
                     91: ...
                     92: Which partition do you want to change?: [none]
                     93: ...
                     94: Should we write new partition table? [n] y
                     95: # resize_ffs -y /dev/rld0f
                     96: # reboot
                     97: """]]
                     98: * Next boot, create a new /etc/fstab:
                     99: [[!template  id=programlisting text="""
                    100: # mount -u -o rw /dev/ld0f /
                    101: # cat > /etc/fstab << EOF
                    102: /dev/ld0f       /               ffs     rw      1 1
                    103: /dev/ld0e       /boot           msdos   rw      1 1
                    104: kernfs          /kern           kernfs  rw
                    105: ptyfs           /dev/pts        ptyfs   rw
                    106: procfs          /proc           procfs  rw
                    107: tmpfs           /var/shm        tmpfs   rw,-m1777,-sram%25
                    108: EOF
                    109: # reboot
                    110: """]]
1.2       wiki      111: 
1.9       wiki      112: # HDMI
                    113: 
1.10      wiki      114: ## Framebuffer console
                    115: 
                    116: Simply add **console=fb** to the *bootargs* variable in *boot.ini*.
                    117: 
1.9       wiki      118: ## Video mode
                    119: 
                    120: HDMI video mode can be selected in U-Boot with the *video* command, e.g.:
                    121: 
                    122: [[!template  id=programlisting text="""
                    123: odroidc#video dev open 1080P
                    124: """]]
                    125: 
                    126: To make this change permanent, add it to the *bootcmd* variable in *boot.ini*:
                    127: 
                    128: [[!template  id=programlisting text="""
                    129: setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
                    130: """]]
                    131: 
1.14      wiki      132: ## 16 or 24 bpp?
                    133: 
                    134: 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>.
                    135: 
1.9       wiki      136: ## Overscan compensation
1.8       wiki      137: 
                    138: 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.:
                    139: 
                    140: [[!template  id=programlisting text="""
                    141: # sysctl -w hw.genfb0.scale=95
                    142: """]]
                    143: 
                    144: Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed.
                    145: 
                    146: To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*.
                    147: 
1.15      wiki      148: # SYS_LED
                    149: 
                    150: 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*:
                    151: 
                    152: [[!template  id=programlisting text="""
                    153: gpio4 13 set out sys_led
                    154: """]]
                    155: 
                    156: After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]].
                    157: 
                    158: [[!template  id=programlisting text="""
                    159: # turn the light on
                    160: gpioctl gpio4 sys_led on
                    161: 
                    162: # turn the light off
                    163: gpioctl gpio4 sys_led off
                    164: 
                    165: # toggle the light state
                    166: gpioctl gpio4 sys_led toggle
                    167: """]]
                    168: 
1.12      wiki      169: # Documentation
                    170: 
                    171: Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
                    172: 
1.1       wiki      173: # ODROID-C1 UART pins
                    174: 
                    175: From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):
                    176: 
                    177: [[!template  id=programlisting text="""
                    178:  ___UART____
                    179: |Pin 4 - GND|
                    180: |Pin 3 - RXD|
                    181: |Pin 2 - TXD|
                    182: |Pin 1 - VCC|
                    183: \___________|
                    184: 
                    185: 3.3V LVTTL
                    186: """]]

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