About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / arm / SA1100 / GraphicsClient

Custom Search

Based on kernel version 4.13.3. Page generated on 2017-09-23 13:54 EST.

1	ADS GraphicsClient Plus Single Board Computer
3	For more details, contact Applied Data Systems or see
4	http://www.applieddata.net/products.html
6	The original Linux support for this product has been provided by 
7	Nicolas Pitre <nico@fluxnic.net>. Continued development work by
8	Woojung Huh <whuh@applieddata.net>
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.
14	Use 'make graphicsclient_config' before any 'make config'.  This will set up
15	defaults for GraphicsClient Plus support.
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:
20		r0 = 0
21		r1 = 29	(this is the GraphicsClient architecture number)
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.
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.
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:
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 -----
49	Then the kernel (and ramdisk if otherfile/otherbase lines above are
50	uncommented) would be loaded with:
52		angelboot -f angelboot.opt zImage
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.
58	If any other bootloader is used, ensure it accomplish the same, especially
59	for r0/r1 register values before jumping into the kernel.
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
77	To do:
78	- UCB1200 audio with new ucb_generic layer
79	- everything else!  :-)
81	Notes:
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.
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.
97	Any contribution can be sent to nico@fluxnic.net and will be greatly welcome!
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.