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path: root/src/drivers/bitbash
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* Modify gPXE core and drivers to work with the new timer subsystemAlexey Zaytsev2008-03-023-3/+2Star
| | | | Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
* Ensure clock line is in the idle state before asserting chip select.Michael Brown2007-07-281-0/+4
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* Support cards such as natsemi which treat the data as little-endianMichael Brown2007-07-011-17/+24
| | | | | (i.e. LSB transmitted first on the wire), even though SPI commands and addresses always have to be big-endian.
* Abstracted out part of the concept of an SPI device to a generalised NVSMichael Brown2006-12-041-5/+4Star
| | | | | | | device. Separated the mechanisms of non-volatile storage access and non-volatile stored options.
* Changed length parameter in SPI methods to be a byte length, rather thanMichael Brown2006-12-041-5/+3Star
| | | | a word length.
* Generalised the SPI abstraction layer to also be able to handle interfacesMichael Brown2006-12-043-55/+78
| | | | | | that don't provide the full flexibility of a bit-bashing interface. Temporarily hacked rtl8139.c to use the new interface.
* We don't actually have a stdio.h header file. Our printf() functions areMichael Brown2006-09-272-2/+0Star
| | | | | | | | defined in vsprintf.h. (This may change, since vsprintf.h is a non-standard name, but for now it's the one to use.) There should be no need to include vsprintf.h just for DBG() statements, since include/compiler.h forces it in for a debug build anyway.
* added stdio.h to includes for DBG compilationMarty Connor2006-09-272-0/+3
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* Generalise three-wire interface to generic SPI interface.Michael Brown2006-06-141-0/+165
| | | | | Update rtl8139 driver to instantiate an SPI interface with a three-wire device attached.
* Move per-transition delays from generic bit-bashing layer to i2c layerMichael Brown2006-06-142-8/+15
| | | | (since SPI bit-bashing will require different delay semantics).
* Change read_bit() to return 0 or -1UL, rather than 0 or 1.Michael Brown2006-06-122-3/+5
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* Added bit-bashing i2c interface codeMichael Brown2006-06-111-0/+313
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* Added sketch of bit-bashing interface common codeMichael Brown2006-06-081-0/+55