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Diffstat (limited to 'kernel/Documentation/arm/SA1100/GraphicsClient')
| -rw-r--r-- | kernel/Documentation/arm/SA1100/GraphicsClient | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/kernel/Documentation/arm/SA1100/GraphicsClient b/kernel/Documentation/arm/SA1100/GraphicsClient new file mode 100644 index 000000000..867bb3594 --- /dev/null +++ b/kernel/Documentation/arm/SA1100/GraphicsClient @@ -0,0 +1,98 @@ +ADS GraphicsClient Plus Single Board Computer + +For more details, contact Applied Data Systems or see +http://www.applieddata.net/products.html + +The original Linux support for this product has been provided by +Nicolas Pitre <nico@fluxnic.net>. Continued development work by +Woojung Huh <whuh@applieddata.net> + +It's currently possible to mount a root filesystem via NFS providing a +complete Linux environment. Otherwise a ramdisk image may be used. The +board supports MTD/JFFS, so you could also mount something on there. + +Use 'make graphicsclient_config' before any 'make config'. This will set up +defaults for GraphicsClient Plus support. + +The kernel zImage is linked to be loaded and executed at 0xc0200000. +Also the following registers should have the specified values upon entry: + + r0 = 0 + r1 = 29 (this is the GraphicsClient architecture number) + +Linux can be used with the ADS BootLoader that ships with the +newer rev boards. See their documentation on how to load Linux. +Angel is not available for the GraphicsClient Plus AFAIK. + +There is a board known as just the GraphicsClient that ADS used to +produce but has end of lifed. This code will not work on the older +board with the ADS bootloader, but should still work with Angel, +as outlined below. In any case, if you're planning on deploying +something en masse, you should probably get the newer board. + +If using Angel on the older boards, here is a typical angel.opt option file +if the kernel is loaded through the Angel Debug Monitor: + +----- begin angelboot.opt ----- +base 0xc0200000 +entry 0xc0200000 +r0 0x00000000 +r1 0x0000001d +device /dev/ttyS1 +options "38400 8N1" +baud 115200 +#otherfile ramdisk.gz +#otherbase 0xc0800000 +exec minicom +----- end angelboot.opt ----- + +Then the kernel (and ramdisk if otherfile/otherbase lines above are +uncommented) would be loaded with: + + angelboot -f angelboot.opt zImage + +Here it is assumed that the board is connected to ttyS1 on your PC +and that minicom is preconfigured with /dev/ttyS1, 38400 baud, 8N1, no flow +control by default. + +If any other bootloader is used, ensure it accomplish the same, especially +for r0/r1 register values before jumping into the kernel. + + +Supported peripherals: +- SA1100 LCD frame buffer (8/16bpp...sort of) +- on-board SMC 92C96 ethernet NIC +- SA1100 serial port +- flash memory access (MTD/JFFS) +- pcmcia +- touchscreen(ucb1200) +- ps/2 keyboard +- console on LCD screen +- serial ports (ttyS[0-2]) + - ttyS0 is default for serial console +- Smart I/O (ADC, keypad, digital inputs, etc) + See http://www.eurotech-inc.com/linux-sbc.asp for IOCTL documentation + and example user space code. ps/2 keybd is multiplexed through this driver + +To do: +- UCB1200 audio with new ucb_generic layer +- everything else! :-) + +Notes: + +- The flash on board is divided into 3 partitions. mtd0 is where + the ADS boot ROM and zImage is stored. It's been marked as + read-only to keep you from blasting over the bootloader. :) mtd1 is + for the ramdisk.gz image. mtd2 is user flash space and can be + utilized for either JFFS or if you're feeling crazy, running ext2 + on top of it. If you're not using the ADS bootloader, you're + welcome to blast over the mtd1 partition also. + +- 16bpp mode requires a different cable than what ships with the board. + Contact ADS or look through the manual to wire your own. Currently, + if you compile with 16bit mode support and switch into a lower bpp + mode, the timing is off so the image is corrupted. This will be + fixed soon. + +Any contribution can be sent to nico@fluxnic.net and will be greatly welcome! + |