Annotation of wikisrc/ports/evbarm/odroid-c1.mdwn, revision 1.15
1.1 wiki 1: [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1"]]
2:
1.13 wiki 3: [ODROID-C1](http://www.hardkernel.com/main/products/prdt_info.php?g_code=G141578608433&tab_idx=1) is a $35 quad-core SBC from Hardkernel. ODROID-C1 support was introduced in NetBSD 7.0.
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
15: - SD/MMC controller (DMA)
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: - Simultaneous SD card and eMMC usage
28: - SD/MMC UHS-I support (needs sdmmc(4) changes)
29: - IR receiver
30: - I2C
1.7 wiki 31: - Audio
1.2 wiki 32:
33: # Installation
34:
35: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *beagleboard.img*
36: * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>
1.3 wiki 37: * Pre-built binaries here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
1.4 wiki 38: * Note the location and size of the FFS partition in the *beagleboard.img* disklabel:
39: [[!template id=programlisting text="""
40: # $TOOLDIR/bin/nbdisklabel -M evbarm -B le beagleboard.img
41: ...
42: 8 partitions:
43: # size offset fstype [fsize bsize cpg/sgs]
44: a: 1359312 385024 4.2BSD 0 0 0 # (Cyl. 188 - 851*)
45: b: 262144 122880 swap # (Cyl. 60 - 187)
46: c: 1744336 0 unused 0 0 # (Cyl. 0 - 851*)
47: d: 1744336 0 unused 0 0 # (Cyl. 0 - 851*)
48: e: 114688 8192 MSDOS # (Cyl. 4 - 59)
49: """]]
1.2 wiki 50: * Write the bootloader to the empty space at the start of the base image:
51: [[!template id=programlisting text="""
52: # dd if=bl1.bin.hardkernel of=beagleboard.img bs=1 count=442 conv=notrunc
53: # dd if=bl1.bin.hardkernel of=beagleboard.img bs=512 skip=1 seek=1 conv=notrunc
54: # dd if=u-boot.bin of=beagleboard.img bs=512 seek=64 conv=notrunc
55: """]]
1.4 wiki 56: * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table:
57: [[!template id=programlisting text="""
58: # $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u beagleboard.img
59: ...
60: Which partition do you want to change?: [none] 1
61: The data for partition 1 is:
62: <UNUSED>
63: sysid: [0..255 default: 169]
64: start: [0..109cyl default: 63, 0cyl, 0MB] 385024
65: size: [0..85cyl default: 1359312, 85cyl, 664MB] 1359312
66: ...
67: Which partition do you want to change?: [none]
68: ...
69: Should we write new partition table? [n] y
70: """]]
1.2 wiki 71: * Write the image to an SD card.
72: * Copy the kernel (netbsd.ub) for your board to the root of the MS-DOS partition on the SD card.
1.9 wiki 73: * Create or edit *boot.ini* on the MS-DOS partition:
1.2 wiki 74: [[!template id=programlisting text="""
75: ODROIDC-UBOOT-CONFIG
76:
1.4 wiki 77: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}"
1.2 wiki 78: setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
79: run bootcmd
80: """]]
1.5 wiki 81: * 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 82: [[!template id=programlisting text="""
83: # fdisk -u ld0
84: ...
85: Which partition do you want to change?: [none] 1
86: The data for partition 1 is:
87: NetBSD (sysid 169)
88: start 385024, size 1359312 (664 MB, Cyls 23/246/32-108/147/55)
89: PBR is not bootable: All bytes are identical (0x00)
90: sysid: [0..255 default: 169]
91: start: [0..966cyl default: 385024, 24cyl, 188MB]
92: size: [0..942cyl default: 1359312, 85cyl, 664MB] $
93: ...
94: Which partition do you want to change?: [none]
95: ...
96: Should we write new partition table? [n] y
97: # resize_ffs -y /dev/rld0f
98: # reboot
99: """]]
100: * Next boot, create a new /etc/fstab:
101: [[!template id=programlisting text="""
102: # mount -u -o rw /dev/ld0f /
103: # cat > /etc/fstab << EOF
104: /dev/ld0f / ffs rw 1 1
105: /dev/ld0e /boot msdos rw 1 1
106: kernfs /kern kernfs rw
107: ptyfs /dev/pts ptyfs rw
108: procfs /proc procfs rw
109: tmpfs /var/shm tmpfs rw,-m1777,-sram%25
110: EOF
111: # reboot
112: """]]
1.2 wiki 113:
1.9 wiki 114: # HDMI
115:
1.10 wiki 116: ## Framebuffer console
117:
118: Simply add **console=fb** to the *bootargs* variable in *boot.ini*.
119:
1.9 wiki 120: ## Video mode
121:
122: HDMI video mode can be selected in U-Boot with the *video* command, e.g.:
123:
124: [[!template id=programlisting text="""
125: odroidc#video dev open 1080P
126: """]]
127:
128: To make this change permanent, add it to the *bootcmd* variable in *boot.ini*:
129:
130: [[!template id=programlisting text="""
131: setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
132: """]]
133:
1.14 wiki 134: ## 16 or 24 bpp?
135:
136: 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>.
137:
1.9 wiki 138: ## Overscan compensation
1.8 wiki 139:
140: 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.:
141:
142: [[!template id=programlisting text="""
143: # sysctl -w hw.genfb0.scale=95
144: """]]
145:
146: Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed.
147:
148: To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*.
149:
1.15 ! wiki 150: # SYS_LED
! 151:
! 152: 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*:
! 153:
! 154: [[!template id=programlisting text="""
! 155: gpio4 13 set out sys_led
! 156: """]]
! 157:
! 158: After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]].
! 159:
! 160: [[!template id=programlisting text="""
! 161: # turn the light on
! 162: gpioctl gpio4 sys_led on
! 163:
! 164: # turn the light off
! 165: gpioctl gpio4 sys_led off
! 166:
! 167: # toggle the light state
! 168: gpioctl gpio4 sys_led toggle
! 169: """]]
! 170:
1.12 wiki 171: # Documentation
172:
173: Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
174:
1.1 wiki 175: # ODROID-C1 UART pins
176:
177: From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):
178:
179: [[!template id=programlisting text="""
180: ___UART____
181: |Pin 4 - GND|
182: |Pin 3 - RXD|
183: |Pin 2 - TXD|
184: |Pin 1 - VCC|
185: \___________|
186:
187: 3.3V LVTTL
188: """]]
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