openslx-ng/ipxe.git/src/include/ipxe/linux, branch master

[rng] Use fixed-point calculations for min-entropy quantities

2018-03-20T18:56:01+00:00

We currently perform various min-entropy calculations using build-time floating-point arithmetic. No floating-point code ends up in the final binary, since the results are eventually converted to integers and asserted to be compile-time constants. Though this mechanism is undoubtedly cute, it inhibits us from using "-mno-sse" to prevent the use of SSE registers by the compiler. Fix by using fixed-point arithmetic instead. Signed-off-by: Michael Brown

[time] Allow timer to be selected at runtime

2017-01-26T08:17:37+00:00

Allow the active timer (providing udelay() and currticks()) to be selected at runtime based on probing during the INIT_EARLY stage of initialisation. TICKS_PER_SEC is now a fixed compile-time constant for all builds, and is independent of the underlying clock tick rate. We choose the value 1024 to allow multiplications and divisions on seconds to be converted to bit shifts. TICKS_PER_MS is defined as 1, allowing multiplications and divisions on milliseconds to be omitted entirely. The 2% inaccuracy in this definition is negligible when using the standard BIOS timer (running at around 18.2Hz). TIMER_RDTSC now checks for a constant TSC before claiming to be a usable timer. (This timer can be tested in KVM via the command-line option "-cpu host,+invtsc".) Signed-off-by: Michael Brown

[linux] Rewrite headers included in all builds

2015-03-05T02:43:37+00:00

Rewrite (and relicense) the header files which are included in all builds of iPXE (including non-Linux builds). Signed-off-by: Michael Brown

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02T14:17:31+00:00

Relicense files for which I am the sole author (as identified by util/relicense.pl). Signed-off-by: Michael Brown

[uaccess] Add memcmp_user()

2014-01-12T21:53:16+00:00

Signed-off-by: Michael Brown

[linux] Add support for accessing PCI configuration space via /proc/bus/pci

2013-07-13T10:44:45+00:00

Signed-off-by: Michael Brown

[uaccess] Add userptr_sub() to find the difference between two user pointers

2012-11-05T16:15:14+00:00

Signed-off-by: Michael Brown

[time] Add Linux time source using gettimeofday()

2012-05-04T16:54:31+00:00

Signed-off-by: Michael Brown

[rng] Add Linux entropy source using /dev/random

2012-03-18T17:06:03+00:00

Signed-off-by: Michael Brown

[linux] Add empty smbios

2010-08-19T11:38:34+00:00

There exists an smbios userspace library so implementing this is probably possible, but doesn't seem really important to have in userspace. Hence provide a dummy implementation returning an error. Signed-off-by: Piotr Jaroszyński Signed-off-by: Michael Brown