Annotation of wikisrc/ports/evbarm/odroid-c1.mdwn, revision 1.34
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]].
1.34 ! wiki 34: * Build U-Boot for ODROID-C1 <https://github.com/jaredmcneill/u-boot-odroid>
1.32 wiki 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.
1.33 wiki 45: * Tested 2021-02-19 with NetBSD-current, christos
1.28 jmcneill 46:
47: # Installation (NetBSD 7.0/7.1)
1.2 wiki 48:
1.20 wiki 49: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img*
1.2 wiki 50: * Build U-Boot for ODROID-C1 <https://github.com/hardkernel/u-boot/tree/odroidc-v2011.03>
1.3 wiki 51: * Pre-built binaries here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/odroidc1/u-boot-odroidc-v2011.03-20150308.tar.gz>
1.27 sevan 52: * Note the location and size of the FFS partition in the *armv7.img* disklabel:
1.4 wiki 53: [[!template id=programlisting text="""
1.20 wiki 54: # $TOOLDIR/bin/nbdisklabel -M evbarm -B le armv7.img
1.4 wiki 55: ...
56: 8 partitions:
57: # size offset fstype [fsize bsize cpg/sgs]
58: a: 1359312 385024 4.2BSD 0 0 0 # (Cyl. 188 - 851*)
59: b: 262144 122880 swap # (Cyl. 60 - 187)
60: c: 1744336 0 unused 0 0 # (Cyl. 0 - 851*)
61: d: 1744336 0 unused 0 0 # (Cyl. 0 - 851*)
62: e: 114688 8192 MSDOS # (Cyl. 4 - 59)
63: """]]
1.2 wiki 64: * Write the bootloader to the empty space at the start of the base image:
65: [[!template id=programlisting text="""
1.20 wiki 66: # dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc
67: # dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc
68: # dd if=u-boot.bin of=armv7.img bs=512 seek=64 conv=notrunc
1.2 wiki 69: """]]
1.4 wiki 70: * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table:
71: [[!template id=programlisting text="""
1.20 wiki 72: # $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u armv7.img
1.4 wiki 73: ...
74: Which partition do you want to change?: [none] 1
75: The data for partition 1 is:
76: <UNUSED>
77: sysid: [0..255 default: 169]
78: start: [0..109cyl default: 63, 0cyl, 0MB] 385024
79: size: [0..85cyl default: 1359312, 85cyl, 664MB] 1359312
80: ...
81: Which partition do you want to change?: [none]
82: ...
83: Should we write new partition table? [n] y
84: """]]
1.2 wiki 85: * Write the image to an SD card.
1.21 wiki 86: * Edit *boot.ini* on the MS-DOS partition. Note that the default boot.ini has `console=fb` in `bootargs`, which you should remove if you want serial console:
1.2 wiki 87: [[!template id=programlisting text="""
88: ODROIDC-UBOOT-CONFIG
89:
1.21 wiki 90: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr} console=fb"
1.2 wiki 91: setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
92: run bootcmd
1.21 wiki 93: """]]
94:
1.5 wiki 95: * 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 96: [[!template id=programlisting text="""
97: # fdisk -u ld0
98: ...
99: Which partition do you want to change?: [none] 1
100: The data for partition 1 is:
101: NetBSD (sysid 169)
102: start 385024, size 1359312 (664 MB, Cyls 23/246/32-108/147/55)
103: PBR is not bootable: All bytes are identical (0x00)
104: sysid: [0..255 default: 169]
105: start: [0..966cyl default: 385024, 24cyl, 188MB]
106: size: [0..942cyl default: 1359312, 85cyl, 664MB] $
107: ...
108: Which partition do you want to change?: [none]
109: ...
110: Should we write new partition table? [n] y
111: # resize_ffs -y /dev/rld0f
112: # reboot
113: """]]
114: * Next boot, create a new /etc/fstab:
115: [[!template id=programlisting text="""
116: # mount -u -o rw /dev/ld0f /
117: # cat > /etc/fstab << EOF
118: /dev/ld0f / ffs rw 1 1
119: /dev/ld0e /boot msdos rw 1 1
120: kernfs /kern kernfs rw
121: ptyfs /dev/pts ptyfs rw
122: procfs /proc procfs rw
123: tmpfs /var/shm tmpfs rw,-m1777,-sram%25
124: EOF
125: # reboot
126: """]]
1.2 wiki 127:
1.9 wiki 128: # HDMI
129:
1.10 wiki 130: ## Framebuffer console
131:
132: Simply add **console=fb** to the *bootargs* variable in *boot.ini*.
133:
1.9 wiki 134: ## Video mode
135:
136: HDMI video mode can be selected in U-Boot with the *video* command, e.g.:
137:
138: [[!template id=programlisting text="""
139: odroidc#video dev open 1080P
140: """]]
141:
142: To make this change permanent, add it to the *bootcmd* variable in *boot.ini*:
143:
144: [[!template id=programlisting text="""
145: setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000"
146: """]]
147:
1.14 wiki 148: ## 16 or 24 bpp?
149:
150: 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>.
151:
1.9 wiki 152: ## Overscan compensation
1.8 wiki 153:
154: 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.:
155:
156: [[!template id=programlisting text="""
157: # sysctl -w hw.genfb0.scale=95
158: """]]
159:
160: Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed.
161:
162: To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*.
163:
1.15 wiki 164: # SYS_LED
165:
166: 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*:
167:
168: [[!template id=programlisting text="""
169: gpio4 13 set out sys_led
170: """]]
171:
172: After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]].
173:
174: [[!template id=programlisting text="""
175: # turn the light on
176: gpioctl gpio4 sys_led on
177:
178: # turn the light off
179: gpioctl gpio4 sys_led off
180:
181: # toggle the light state
182: gpioctl gpio4 sys_led toggle
183: """]]
184:
1.24 wiki 185: # U-Boot Environment
186:
187: 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>
188:
1.25 wiki 189: # Automatically booting a backup kernel
190:
191: *These instructions assume the kernels live on eMMC. Adjust devices accordingly for SD card setup.*
192:
193: 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.
194:
195: Create /boot/boot.ini as follows:
196: [[!template id=programlisting text="""
197: ODROIDC-UBOOT-CONFIG
198: setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}"
199: fatload mmc 0:1 0x22000000 boot.scr
200: source 0x22000000
201: """]]
202:
203: Create /boot/boot.txt:
204: [[!template id=programlisting text="""
205: # regenerate with:
206: # mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" boot.txt boot.scr
207:
208: setenv rescue_kernel "onetbsd.ub"
209: setenv kernel "netbsd.ub"
210:
211: if test ${boot_rescue} = false; then
212: setenv boot_rescue true
213: saveenv
214: fatload mmc 0:1 0x21000000 ${kernel}
215: mw.l c1109900 0f08ffff # arm watchdog
216: bootm 0x21000000
217: else
218: fatload mmc 0:1 0x21000000 ${rescue_kernel}
219: bootm 0x21000000
220: fi
221: """]]
222:
223: Generate boot.scr from boot.txt:
224: [[!template id=programlisting text="""
225: mkubootimage -A arm -C none -O netbsd -T script -a 0 -n "NetBSD/odroidc1 boot" /boot/boot.txt /boot/boot.scr
226: """]]
227:
228: Install the **uenv** tool from above and add the following to root's crontab:
229: [[!template id=programlisting text="""
230: @reboot /usr/local/sbin/uenv ld0 boot_rescue false
231: """]]
232:
1.12 wiki 233: # Documentation
234:
235: Amlogic S805 datasheet: <http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf>
236:
1.1 wiki 237: # ODROID-C1 UART pins
238:
239: From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):
240:
241: [[!template id=programlisting text="""
242: ___UART____
243: |Pin 4 - GND|
244: |Pin 3 - RXD|
245: |Pin 2 - TXD|
246: |Pin 1 - VCC|
247: \___________|
248:
249: 3.3V LVTTL
250: """]]
1.26 leot 251:
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