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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 <hpa@zytor.com>
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Conflicts:
core/bcopy32.inc
core/cleanup.inc
core/conio.inc
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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If we enable interrupts for the serial console, add a proper interrupt
handler. Since we don't know what vector we'll end up using, or if we
are shared with other devices, simply hook *all* the interrupts and
poll the serial port then.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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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 <hpa@zytor.com>
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Rename the .text, .data and .bss sections to .text16, .data16 and
.bss16, in anticipation of being linked with compiler-generated 32-bit
code, which presumably would like to use the standard section names.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Impact: new feature
COMBOOT interface to the new shuffler; resurrect comapi_chainboot as
that functionality is still potentially relevant.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Move source files out of the root directory; the root is a mess and
has become virtually unmaintainable. The Syslinux core now lives in
core/; the Linux and generic utilities has moved into utils/, and
copybs.com has moved into dos/; it had to go somewhere, and it seemed
as good a place as any.
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