minix/lib/libsys/arch
Thomas Veerman db8c1ee9d0 ARM: provide free running clock to replace ccnt
The Cycle CouNTer on ARM cannot be used reliably as it wraps around
rather quickly and can be altered by user space (on Minix). Furthermore,
it's buggy when wrapping and is not implemented at all on the Linaro
Beagleboard emulator.

This patch programs GPTIMER10 as a free running clock at 1.625 MHz (it
doesn't generate interrupts). It's memory mapped into every process,
which enables libsys to provide micro_delay().

Change-Id: Iba004c6c62976762fe154ea390d69e518eec1531
2013-01-31 15:19:11 +00:00
..
earm ARM: provide free running clock to replace ccnt 2013-01-31 15:19:11 +00:00
i386 Split libsys in arch dependent parts 2013-01-25 17:07:01 +00:00