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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 <nico@cam.org>. Continued development work by | ||
8 | Woojung Huh <whuh@applieddata.net> | ||
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.applieddata.com/developers/linux 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 nico@cam.org and will be greatly welcome! | ||
98 | |||