delta/syslinux.git/core/init.inc, branch thread

core: hook INT 1Ch for a simple monotonic timer

2009-09-03T00:44:32+00:00

The BIOS_timer variable at 4C6h is somewhat unreliable... it is
documented to wrap at "midnight", norminally after 1627419 ticks
(0x18d51b), which is a rather awkward number to deal with modulo.
Instead, hook the INT 1Ch secondary timer interrupt and just count a
simple incrementing variable.

Signed-off-by: H. Peter Anvin

core: merge cpuinit.inc into init.inc

2009-09-03T00:32:39+00:00

The separation between cpuinit.inc and init.inc has never been very
clear, and it just made the code harder to read.

Signed-off-by: H. Peter Anvin

core: remove assembly definition of Files in iso/pxelinux

2009-08-11T00:30:25+00:00

Remove the assembly definition of Files in isolinux and pxelinux.
Still to do: remove dependencies on Files living in .bss16 space.

Signed-off-by: H. Peter Anvin

core: add new __lowmem macro to allocate a static lowmem buffer

2009-06-02T23:44:41+00:00

Add a new __lowmem macro that can be applied to an uninitialized
static (or global) object, which allocates it in a new .lowmem section
allocated below the 1 MB boundary.  Keep in mind that low memory is
precious!

Signed-off-by: H. Peter Anvin

core: load the PM code at 1 MB, COM32R code follows

2009-05-25T02:09:32+00:00

Load our own (core) PM code at 1 MB; when loading a COM32R module let
it follow our own PM code.

Signed-off-by: H. Peter Anvin

core: make decompression of the PM code actually work

2009-05-24T04:38:51+00:00

We would correctly decompress the PM code, and then reject it because
of an incorrect length comparison.  Fix.

Signed-off-by: H. Peter Anvin

core: drop double clearing of .uibss

2009-05-20T23:09:05+00:00

The .uibss and .auxseg are cleared together now, but .uibss was also
cleared separately.

Signed-off-by: H. Peter Anvin

core: LZO compress the PM part of the core

2009-05-20T09:24:36+00:00

Use LZO to compress the PM part of the core.  LZO is not the best
compression algorithm, but it is very fast, and the decompressor is
only 447 bytes long.  The LZO code is part of the LZO 2.03 library.

Signed-off-by: H. Peter Anvin

core: make the COMBOOT API available to in-kernel PM code

2009-05-15T03:17:43+00:00

Make it possible to call the COMBOOT API from in-kernel PM code,
simply by setting up the COMBOOT API earlier and only tearing it down
during final shutdown.

WARNING: the COMBOOT API is quite possibly probably not reentrant; I
haven't checked it...

Signed-off-by: H. Peter Anvin

core: handle more than 32K of code for disk-based derivatives

2009-05-14T23:33:37+00:00

Handle more than 32K worth of code for disk-based derivatives.  We do
this by allowing the sector pointers to overflow past sector 1; this
is OK because we limit a run to be based on only the pointers that we
have read so far.

XXX: This is implemented for EXTLINUX, but breaks SYSLINUX.  Need to
update (and unify!) the SYSLINUX installers to cope.

Signed-off-by: H. Peter Anvin