--- wikisrc/ports/evbarm/odroid-c1.mdwn 2015/03/08 15:48:58 1.5 +++ wikisrc/ports/evbarm/odroid-c1.mdwn 2015/10/28 18:05:41 1.20 @@ -1,39 +1,41 @@ [[!meta title="NetBSD/evbarm on Hardkernel ODROID-C1"]] +[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. + [[!toc levels=2]] # Supported hardware - - CPU: Cortex-A5: S805 (4-core) at 1.5GHz + - CPU: Cortex-A5: Amlogic S805 (4-core) at 1.5GHz - CPU frequency scaling is supported with machdep.cpu sysctl tree - SMP supported - PL310 L2 cache controller - GIC - A5 watchdog timer - A5 global timer - - SD/MMC controller (DMA) + - "SDHC" and "SDIO" SD/MMC controllers (DMA) - Serial console + - Framebuffer console - USB host (OTG) - Gigabit Ethernet (GMAC) - RTL8211F PHY - Hardware random number generator + - RTC + - GPIO # TODO - USB device mode - - Simultaneous SD card and eMMC usage - - SD/MMC UHS-I support (needs sdmmc(4) changes) - - HDMI / framebuffer - IR receiver - - GPIO - I2C + - Audio # Installation -* Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *beagleboard.img* +* Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *armv7.img* * Build U-Boot for ODROID-C1 * Pre-built binaries here: -* Note the location and size of the FFS partition in the *beagleboard.img* disklabel: +* Note the location and size of the FFS partition in the * armv7.img* disklabel: [[!template id=programlisting text=""" -# $TOOLDIR/bin/nbdisklabel -M evbarm -B le beagleboard.img +# $TOOLDIR/bin/nbdisklabel -M evbarm -B le armv7.img ... 8 partitions: # size offset fstype [fsize bsize cpg/sgs] @@ -45,13 +47,13 @@ """]] * Write the bootloader to the empty space at the start of the base image: [[!template id=programlisting text=""" -# dd if=bl1.bin.hardkernel of=beagleboard.img bs=1 count=442 conv=notrunc -# dd if=bl1.bin.hardkernel of=beagleboard.img bs=512 skip=1 seek=1 conv=notrunc -# dd if=u-boot.bin of=beagleboard.img bs=512 seek=64 conv=notrunc +# dd if=bl1.bin.hardkernel of=armv7.img bs=1 count=442 conv=notrunc +# dd if=bl1.bin.hardkernel of=armv7.img bs=512 skip=1 seek=1 conv=notrunc +# dd if=u-boot.bin of=armv7.img bs=512 seek=64 conv=notrunc """]] * Since the bootloader has overwritten the disklabel, we need to re-add partition "a" from the disklabel to the MBR partition table: [[!template id=programlisting text=""" -# $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u beagleboard.img +# $TOOLDIR/bin/armv7--netbsdelf-eabihf-fdisk -u armv7.img ... Which partition do you want to change?: [none] 1 The data for partition 1 is: @@ -66,14 +68,10 @@ Should we write new partition table? [n] """]] * Write the image to an SD card. * Copy the kernel (netbsd.ub) for your board to the root of the MS-DOS partition on the SD card. -* Create or edit boot.ini on the MS-DOS partition: +* Create or edit *boot.ini* on the MS-DOS partition: [[!template id=programlisting text=""" ODROIDC-UBOOT-CONFIG -setenv m "1080p" -setenv vout_mode "hdmi" -setenv m_bpp "32" -setenv disableuhs "disableuhs" setenv bootargs "root=ld0f awge0.mac-address=${ethaddr}" setenv bootcmd "fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000" run bootcmd @@ -111,6 +109,67 @@ EOF # reboot """]] +# HDMI + +## Framebuffer console + +Simply add **console=fb** to the *bootargs* variable in *boot.ini*. + +## Video mode + +HDMI video mode can be selected in U-Boot with the *video* command, e.g.: + +[[!template id=programlisting text=""" +odroidc#video dev open 1080P +"""]] + +To make this change permanent, add it to the *bootcmd* variable in *boot.ini*: + +[[!template id=programlisting text=""" +setenv bootcmd "video dev open 1080P; fatload mmc 0:1 0x21000000 netbsd.ub; bootm 0x21000000" +"""]] + +## 16 or 24 bpp? + +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 . + +## Overscan compensation + +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.: + +[[!template id=programlisting text=""" +# sysctl -w hw.genfb0.scale=95 +"""]] + +Setting *scale* to 100 disables scaling, any other value enables the scaler. Values between 10 and 100 are allowed. + +To set this value at boot, you can add **fb.scale=95** to the kernel cmdline options in *boot.ini*. + +# SYS_LED + +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*: + +[[!template id=programlisting text=""" +gpio4 13 set out sys_led +"""]] + +After rebooting, the LED state can be controlled with [[!template id=man name="gpioctl" section="8"]]. + +[[!template id=programlisting text=""" +# turn the light on +gpioctl gpio4 sys_led on + +# turn the light off +gpioctl gpio4 sys_led off + +# toggle the light state +gpioctl gpio4 sys_led toggle +"""]] + +# Documentation + +Amlogic S805 datasheet: + # ODROID-C1 UART pins From [ODROID Forum](http://forum.odroid.com/viewtopic.php?f=115&t=7684):