Based on kernel version 4.2. Page generated on 2015-09-09 12:07 EST.
1 ADS GraphicsClient Plus Single Board Computer 2 3 For more details, contact Applied Data Systems or see 4 http://www.applieddata.net/products.html 5 6 The original Linux support for this product has been provided by 7 Nicolas Pitre <email@example.com>. Continued development work by 8 Woojung Huh <firstname.lastname@example.org> 9 10 It's currently possible to mount a root filesystem via NFS providing a 11 complete Linux environment. Otherwise a ramdisk image may be used. The 12 board supports MTD/JFFS, so you could also mount something on there. 13 14 Use 'make graphicsclient_config' before any 'make config'. This will set up 15 defaults for GraphicsClient Plus support. 16 17 The kernel zImage is linked to be loaded and executed at 0xc0200000. 18 Also the following registers should have the specified values upon entry: 19 20 r0 = 0 21 r1 = 29 (this is the GraphicsClient architecture number) 22 23 Linux can be used with the ADS BootLoader that ships with the 24 newer rev boards. See their documentation on how to load Linux. 25 Angel is not available for the GraphicsClient Plus AFAIK. 26 27 There is a board known as just the GraphicsClient that ADS used to 28 produce but has end of lifed. This code will not work on the older 29 board with the ADS bootloader, but should still work with Angel, 30 as outlined below. In any case, if you're planning on deploying 31 something en masse, you should probably get the newer board. 32 33 If using Angel on the older boards, here is a typical angel.opt option file 34 if the kernel is loaded through the Angel Debug Monitor: 35 36 ----- begin angelboot.opt ----- 37 base 0xc0200000 38 entry 0xc0200000 39 r0 0x00000000 40 r1 0x0000001d 41 device /dev/ttyS1 42 options "38400 8N1" 43 baud 115200 44 #otherfile ramdisk.gz 45 #otherbase 0xc0800000 46 exec minicom 47 ----- end angelboot.opt ----- 48 49 Then the kernel (and ramdisk if otherfile/otherbase lines above are 50 uncommented) would be loaded with: 51 52 angelboot -f angelboot.opt zImage 53 54 Here it is assumed that the board is connected to ttyS1 on your PC 55 and that minicom is preconfigured with /dev/ttyS1, 38400 baud, 8N1, no flow 56 control by default. 57 58 If any other bootloader is used, ensure it accomplish the same, especially 59 for r0/r1 register values before jumping into the kernel. 60 61 62 Supported peripherals: 63 - SA1100 LCD frame buffer (8/16bpp...sort of) 64 - on-board SMC 92C96 ethernet NIC 65 - SA1100 serial port 66 - flash memory access (MTD/JFFS) 67 - pcmcia 68 - touchscreen(ucb1200) 69 - ps/2 keyboard 70 - console on LCD screen 71 - serial ports (ttyS[0-2]) 72 - ttyS0 is default for serial console 73 - Smart I/O (ADC, keypad, digital inputs, etc) 74 See http://www.eurotech-inc.com/linux-sbc.asp for IOCTL documentation 75 and example user space code. ps/2 keybd is multiplexed through this driver 76 77 To do: 78 - UCB1200 audio with new ucb_generic layer 79 - everything else! :-) 80 81 Notes: 82 83 - The flash on board is divided into 3 partitions. mtd0 is where 84 the ADS boot ROM and zImage is stored. It's been marked as 85 read-only to keep you from blasting over the bootloader. :) mtd1 is 86 for the ramdisk.gz image. mtd2 is user flash space and can be 87 utilized for either JFFS or if you're feeling crazy, running ext2 88 on top of it. If you're not using the ADS bootloader, you're 89 welcome to blast over the mtd1 partition also. 90 91 - 16bpp mode requires a different cable than what ships with the board. 92 Contact ADS or look through the manual to wire your own. Currently, 93 if you compile with 16bit mode support and switch into a lower bpp 94 mode, the timing is off so the image is corrupted. This will be 95 fixed soon. 96 97 Any contribution can be sent to email@example.com and will be greatly welcome!