Annotation of wikisrc/ports/evbarm/odroid-c1.mdwn, revision 1.27
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 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:
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>
1.27 ! sevan 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:
1.24 wiki 169: # U-Boot Environment
170:
171: 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>
172:
1.25 wiki 173: # Automatically booting a backup kernel
174:
175: *These instructions assume the kernels live on eMMC. Adjust devices accordingly for SD card setup.*
176:
177: 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.
178:
179: Create /boot/boot.ini as follows:
180: [[!template id=programlisting text="""
181: ODROIDC-UBOOT-CONFIG
182: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}"
183: fatload mmc 0:1 0x22000000 boot.scr
184: source 0x22000000
185: """]]
186:
187: Create /boot/boot.txt:
188: [[!template id=programlisting text="""
189: # regenerate with:
190: # mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" boot.txt boot.scr
191:
192: setenv rescue_kernel "onetbsd.ub"
193: setenv kernel "netbsd.ub"
194:
195: if test ${boot_rescue} = false; then
196: setenv boot_rescue true
197: saveenv
198: fatload mmc 0:1 0x21000000 ${kernel}
199: mw.l c1109900 0f08ffff # arm watchdog
200: bootm 0x21000000
201: else
202: fatload mmc 0:1 0x21000000 ${rescue_kernel}
203: bootm 0x21000000
204: fi
205: """]]
206:
207: Generate boot.scr from boot.txt:
208: [[!template id=programlisting text="""
209: mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" /boot/boot.txt /boot/boot.scr
210: """]]
211:
212: Install the **uenv** tool from above and add the following to root's crontab:
213: [[!template id=programlisting text="""
214: @reboot /usr/local/sbin/uenv ld0 boot_rescue false
215: """]]
216:
1.12 wiki 217: # Documentation
218:
219: Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
220:
1.1 wiki 221: # ODROID-C1 UART pins
222:
223: From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):
224:
225: [[!template id=programlisting text="""
226: ___UART____
227: |Pin 4 - GND|
228: |Pin 3 - RXD|
229: |Pin 2 - TXD|
230: |Pin 1 - VCC|
231: \___________|
232:
233: 3.3V LVTTL
234: """]]
1.26 leot 235:
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