Annotation of wikisrc/ports/evbarm/allwinner.mdwn, revision 1.57

1.1       wiki        1: [[!meta title="NetBSD/evbarm on Allwinner Technology SoCs"]]
                      2: 
1.52      wiki        3: NetBSD 7.0 has support for A20 and A31 SoCs. NetBSD -current adds support for A80 SoCs.
1.49      wiki        4: 
1.18      wiki        5: [[!toc levels=2]]
                      6: 
1.1       wiki        7: # Supported boards
1.11      wiki        8:  - [Banana Pi](http://www.bananapi.org/p/product.html) (BPI)
1.31      wiki        9:  - Cubieboard 2 (CUBIEBOARD)
1.38      wiki       10:  - [Cubieboard 4](http://cubieboard.org/model/cb4/) (ALLWINNER_A80) *NetBSD-current*
1.1       wiki       11:  - Cubietruck (CUBIETRUCK)
1.10      wiki       12:  - [Merrii Hummingbird A31](http://www.merrii.com/en/pla_d.asp?id=172) (HUMMINGBIRD_A31)
1.1       wiki       13: 
                     14: # Supported hardware
                     15:  - SoCs
1.35      wiki       16:    - Cortex-A7: A20 (2-core), A31 (4-core), A80
                     17:    - Cortex-A7/A15: A80 (4-core A7 + 4-core A15)
1.14      wiki       18:  - SD/MMC controller (DMA)
1.1       wiki       19:  - DMA controller
                     20:  - GPIO
1.20      wiki       21:    - Configuration using FEX scripts is supported
1.1       wiki       22:  - UART
                     23:  - I2C
1.36      wiki       24:  - P2WI (A31) / RSB (A80)
1.1       wiki       25:  - PMU
1.36      wiki       26:    - AXP209 (A20)
1.1       wiki       27:    - AXP221 (A31)
1.36      wiki       28:    - AXP806 (A80)
                     29:    - AXP809 (A80)
1.1       wiki       30:  - Watchdog timer
                     31:  - RTC
1.37      wiki       32:    - A20/A31: integrated RTC, PCF8563
                     33:    - A80: AC100
                     34:  - Audio codec (A20/A31)
1.14      wiki       35:  - USB host
1.1       wiki       36:    - OHCI
                     37:    - EHCI
1.37      wiki       38:    - OTG (A20)
1.1       wiki       39:  - SATA (A10/A20)
                     40:  - Gigabit Ethernet (GMAC)
1.45      wiki       41:  - HDMI
                     42:    - DDC / EDID mode detection (A20/A31)
                     43:    - Audio support (A20/A31)
                     44:  - Framebuffer (A20/A31/A80)
1.39      wiki       45:  - IR receiver (A20/A31/A80)
1.2       wiki       46: 
1.14      wiki       47: # TODO
1.40      wiki       48:  - A10
                     49:    - Interrupt controller
                     50:    - EMAC
                     51:  - A31
                     52:    - OTG
                     53:    - IR transmitter
                     54:    - 3G module
                     55:    - TV input
                     56:  - A80
                     57:    - MP
                     58:    - big.LITTLE support
                     59:    - USB3 (OTG and XHCI)
                     60:    - IR transmitter
1.45      wiki       61:    - HDMI (DDC and mode setting; currently relies on U-Boot for setup)
1.40      wiki       62:    - Audio codec
                     63:  - All
                     64:    - USB device mode
                     65:    - SDIO (Bluetooth / WiFi)
                     66:    - NAND
1.44      wiki       67:    - VGA (Cubietruck, Hummingbird A31, Cubieboard4)
1.14      wiki       68: 
1.2       wiki       69: # Installation
                     70: 
1.52      wiki       71: ## A20 / A31 based boards
1.2       wiki       72: 
1.54      leot       73: * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/armv7.img.gz* from
                     74: NetBSD 7.0
1.34      wiki       75: * Download a U-Boot build for your board
1.48      wiki       76:   * Download the correct build from the linux-sunxi web site <http://dl.linux-sunxi.org/nightly/u-boot-sunxi/u-boot-sunxi-mainline/u-boot-sunxi-mainline-latest/>.
1.54      leot       77: * Decompress the image via [[!template id=man name="gunzip" section="1"]]:
                     78: [[!template  id=programlisting text="""
                     79: # gunzip armv7.img.gz
                     80: """]]
1.43      mrg        81: * Write the *u-boot-sunxi-with-spl.bin* loader to the empty space at the start of the base image:
1.2       wiki       82: [[!template  id=programlisting text="""
1.54      leot       83: # dd if=u-boot-sunxi-with-spl.bin of=armv7.img bs=1k seek=8 conv=notrunc
                     84: """]]
                     85: * Write the image to an SD card (e.g.: if the SD card is recognised as *sd0* -
                     86: please check the [[!template id=man name="dmesg" section="8"]] output to be
                     87: sure!):
                     88: [[!template  id=programlisting text="""
                     89: # dd if=armv7.img of=/dev/rsd0d bs=1m
                     90: """]]
                     91: * Copy the kernel (*netbsd.ub*) for your board to the root of the MS-DOS
                     92: partition on the SD card
                     93: * Prepare a *boot.cmd* file for U-Boot boot loader containing the needed
                     94: instructions regarding how to boot the kernel (basically the *bootargs* that are
                     95: passed to the kernel and how to load the kernel from a device to the RAM and
                     96: then boot it from the memory address):
1.57    ! leot       97: [[!template  id=filecontent name="boot.cmd" text="""
1.54      leot       98: setenv kernel_addr      82000000
                     99: setenv kernel           netbsd.ub
                    100: setenv bootargs         "root=ld0a"
                    101: 
                    102: fatload mmc 0:1 ${kernel_addr} ${kernel}
                    103: bootm ${kernel_addr}
1.2       wiki      104: """]]
1.54      leot      105: * The *boot.cmd* text file should be converted in a script image - *boot.scr*
                    106: for U-Boot via [[!template id=man name="mkubootimage" section="1"]]:
1.2       wiki      107: [[!template  id=programlisting text="""
1.54      leot      108: # mkubootimage -A arm -n armv7 -T script boot.cmd boot.scr
1.2       wiki      109: """]]
1.54      leot      110: * Copy the *boot.scr* to the MS-DOS partition of the SD card
1.2       wiki      111: 
1.35      wiki      112: ## A80 based boards
                    113: 
1.50      wiki      114: * Cubieboard 4 U-Boot for SD card: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/allwinner/a80/cubieboard4-uboot.tgz>
1.35      wiki      115: [[!template  id=programlisting text="""
1.50      wiki      116: # dd if=u-boot-spl.bin of=/dev/sdd bs=1k seek=8
                    117: # dd if=u-boot-sun9iw1p1.bin of=/dev/sdd bs=1k seek=19096
1.35      wiki      118: """]]
1.50      wiki      119: * First partition needs to be at +20MB offset. Format it as MSDOS, copy 'netbsd.ub' to it as 'uImage'.
1.35      wiki      120: 
1.7       wiki      121: # Big (endian) fun
1.5       wiki      122: 
                    123: You can run this boards with a little endian (this is the default and implied by above install instructions)
1.12      wiz       124: or with a big endian kernel and userland. However, kernel and userland endianness needs to match.
1.5       wiki      125: 
                    126: To build a big endian release (or sets) use 
                    127: [[!template  id=programlisting text="""
                    128: ./build.sh -m evbearmv7hf-eb 
                    129: """]]
1.12      wiz       130: where -eb means endianness big, hf is hardware floating point support, and earm is the modern "extended" ABI for ARM CPUs, and finally v7 is version 7 of the supported instruction set.
1.17      wiki      131: 
1.21      wiki      132: # FEX scripts
                    133: 
                    134: Board configuration scripts can be found here: <https://github.com/linux-sunxi/sunxi-boards/blob/master/sys_config>. You can compile them with the "fex2bin" tool found here: <https://github.com/linux-sunxi/sunxi-tools>.
                    135: 
                    136: To use, copy the compiled FEX to your MS-DOS partition, load it with U-Boot, and then tell the kernel where to find it with the "sysconfig=" boot option. For example, uEnv.txt on a Cubieboard2 might look like this:
                    137: 
1.57    ! leot      138: [[!template  id=filecontent name="uEnv.txt" text="""
1.21      wiki      139: bootargs=root=ld0a sysconfig=0x43000000
                    140: uenvcmd=mmc dev 0; mmc rescan; fatload mmc 0:1 43000000 cubieboard2.bin; fatload mmc 0:1 82000000 netbsd.ub; bootm 82000000
                    141: """]]
                    142: 
1.22      wiki      143: Some pre-compiled .bin files can be found here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/allwinner/fex/>
                    144: 
1.25      wiki      145: # Framebuffer console
                    146: 
                    147: To use HDMI for the console device, add *console=fb* to bootargs in uEnv.txt.
                    148: 
1.29      wiki      149: If the connected display does not let you disable overscan, you can add a margin to the framebuffer by with the *fb.margin* bootargs option. For example, to set a 25-pixel margin around the screen, add *fb.margin=25* to uEnv.txt
                    150: 
1.27      wiki      151: # HDMI audio
                    152: 
                    153: The default audio device is the analog audio codec. To change the default device, use the *audiocfg* command:
                    154: 
                    155: [[!template  id=programlisting text="""
                    156: a31# audiocfg list
                    157: 0: [*] audio0 @ awinac0: Allwinner CODEC A31, 2 playback channels
                    158: 1: [ ] audio1 @ awinhdmiaudio0: Allwinner HDMI 1.4, 2 playback channels
                    159: a31# audiocfg default 1
                    160: setting default audio device to audio1
                    161: a31# audiocfg list
                    162: 0: [ ] audio0 @ awinac0: Allwinner CODEC A31, 2 playback channels
                    163: 1: [*] audio1 @ awinhdmiaudio0: Allwinner HDMI 1.4, 2 playback channels
                    164: """]]
                    165: 
1.42      wiki      166: # MAC address
1.17      wiki      167: 
1.42      wiki      168: On boards where the ethernet MAC address cannot be determmined, a random MAC address will be generated every boot. You can override this behaviour by specifying a MAC address in *uEnv.txt*:
1.57    ! leot      169: [[!template  id=filecontent name="uEnv.txt" text="""
1.17      wiki      170: bootargs=root=ld0a awge0.mac-address=02:a0:3d:88:1a:1e
                    171: """]]

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