delta/syslinux.git/memdisk/memdisk.inc, branch thread git.kernel.org: pub/scm/boot/syslinux/syslinux.git memdisk: remove unnecessary %ifdef 2009-08-02T18:59:03+00:00 H. Peter Anvin hpa@zytor.com 2009-08-02T18:59:03+00:00 386255cf3c6519926abafd3760f504115519928b Remove an %ifdef that the macros take care of anyway. 
Remove an %ifdef that the macros take care of anyway.
memdisk: don't set CX:DX for INT 13h AH=15h for floppies 2009-08-02T18:56:38+00:00 H. Peter Anvin hpa@zytor.com 2009-08-02T18:56:38+00:00 32598725b8d1941899bc700b5d71efa57c3f419c Win98SE DOS apparently hangs if INT 13h, AH=15h returns the capacity in CX:DX for floppies... *unless* EDD is enabled. Confused yet? This patch also adds some more tracing framework. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Win98SE DOS apparently hangs if INT 13h, AH=15h returns the capacity
in CX:DX for floppies... *unless* EDD is enabled.  Confused yet?

This patch also adds some more tracing framework.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
MEMDISK: additional EDD DPT Fields 2009-08-02T18:12:24+00:00 Miller, Shao Shao.Miller@yrdsb.edu.on.ca 2009-08-02T05:33:36+00:00 d655fa0bc3a9d817df253d4f67bb92da20ef741a We incorrectly used "equ" instead of "dd" (or "db") for strings in memdisk.inc. Oops! My mistake in my 'freedos' branch. Silly mistake. - Shao 
We incorrectly used "equ" instead of "dd" (or "db") for strings in
memdisk.inc.  Oops!  My mistake in my 'freedos' branch.  Silly
mistake.  - Shao
memdisk: correct the types for the EDD DPT, and write a real one 2009-07-31T15:27:58+00:00 H. Peter Anvin hpa@zytor.com 2009-07-31T15:27:58+00:00 41909771e1bafa89f316d3cd75d3b3be4c9e56be Fix the sizes of some of the fields in the EDD DPT. Write a real one to the best of our ability. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Fix the sizes of some of the fields in the EDD DPT.  Write a real one
to the best of our ability.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
[memdisk] Additional EDD Device Parameter Table fields 2009-07-31T05:27:05+00:00 Shao Miller shao.miller@yrdsb.edu.on.ca 2009-07-31T05:27:05+00:00 76906786a0e17af1a10eecd50e86f1173d885712 Some additional fields from the EDD-4 spec. draft for the Device Parameter Table have been added into the structure in setup.c and memdisk.inc. These were added in the hopes of resolving a FreeDOS MEMDISK bug on IBM ThinkPads. 
Some additional fields from the EDD-4 spec. draft for the Device Parameter
Table have been added into the structure in setup.c and memdisk.inc.  These
were added in the hopes of resolving a FreeDOS MEMDISK bug on IBM ThinkPads.
memdisk: move temporary variables away from the EDD data block 2009-07-30T19:28:45+00:00 H. Peter Anvin hpa@zytor.com 2009-07-30T19:28:45+00:00 5ca2764460883f5e9a5bd83db00f242ea1272e33 Move a couple of variables away from the EDD data block. Without this change, FreeDOS doesn't boot on Thinkpads. Unfortunately, this should have been a null change, so it is really not clear why this happens. Stack overflows have been ruled out. Probably need to examine the FreeDOS kernel in some detail. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Move a couple of variables away from the EDD data block.  Without this
change, FreeDOS doesn't boot on Thinkpads.  Unfortunately, this should
have been a null change, so it is really not clear why this happens.
Stack overflows have been ruled out.  Probably need to examine the
FreeDOS kernel in some detail.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
memdisk: handle recursive INT 13h invocation 2009-07-30T18:24:25+00:00 H. Peter Anvin hpa@zytor.com 2009-07-30T18:24:25+00:00 44bc900a31b8c83a4de92c45e0401ceaefe371e8 Some systems, e.g. a lot of Thinkpads, invoke INT 13h recursively from within the stack itself. This is generally a bad idea as it re-runs any INT 13h hooks (including the ones that DOS installs!), but it should work. Keep a counter of recursive invocations and simply bypass the whole system including the DL shift if the invocation is recursive. With this, MS-DOS boots on a Thinkpad T61. FreeDOS is still broken, though, but apparently in a different manner... Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Some systems, e.g. a lot of Thinkpads, invoke INT 13h recursively from
within the stack itself.  This is generally a bad idea as it re-runs
any INT 13h hooks (including the ones that DOS installs!), but it
should work.  Keep a counter of recursive invocations and simply
bypass the whole system including the DL shift if the invocation is
recursive.

With this, MS-DOS boots on a Thinkpad T61.  FreeDOS is still broken,
though, but apparently in a different manner...

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Drop support for ACPI 3 E820 extended memory attributes 2009-05-21T23:03:15+00:00 H. Peter Anvin hpa@zytor.com 2009-05-21T23:03:15+00:00 afef2c845b93ebe52c178a5a42d498be75fb4c8c Drop all support for ACPI 3 E820 extended memory attributes. There are BIOSes in the field that report completely bogus information here, resulting in no memory at all being detected (we then fall back to E801 detection, but that is problematic in its own ways.) There is strong reasons to believe at this point that the extended memory attributes are not usable in their current form, so drop them and revert back to simple 20-byte support, including for MEMDISK spoofing. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Drop all support for ACPI 3 E820 extended memory attributes.  There
are BIOSes in the field that report completely bogus information here,
resulting in no memory at all being detected (we then fall back to
E801 detection, but that is problematic in its own ways.)

There is strong reasons to believe at this point that the extended
memory attributes are not usable in their current form, so drop them
and revert back to simple 20-byte support, including for MEMDISK
spoofing.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Unify dependency generation: MCONFIG.embedded 2009-04-28T04:42:45+00:00 H. Peter Anvin hpa@zytor.com 2009-04-28T04:42:45+00:00 e6d94cc986897ac80a13a5eedd8ab38d581b0453 Unify dependency generation and move common rules into MCONFIG.embedded. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Unify dependency generation and move common rules into
MCONFIG.embedded.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Update copyright notices; add Intel notices where appropriate 2009-04-04T21:48:10+00:00 H. Peter Anvin hpa@zytor.com 2009-04-04T21:48:10+00:00 390a4bf409a4574fe3272adf9f873ef78b78c167 Update copyright notices. Per agreement with my new employer, Intel Corporation, add Intel copyright notices where appropriate. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Update copyright notices.  Per agreement with my new employer, Intel
Corporation, add Intel copyright notices where appropriate.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>