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89 Commits

Author SHA1 Message Date
Michael Brown
6b09dd8244 undipci_probe() has to calculate busdevfn anyway, so we may as well pass 
it directly to undi_load_pci().
 2007-01-09 02:58:07 +00:00
Michael Brown
937289cdc8 Provide storage for an undi_device structure representing the preloaded 
UNDI stack.
 2007-01-09 02:29:18 +00:00
Michael Brown
cea2221737 Use fixed-width fields in struct undi_device, so that pxeprefix.S will be 
able to populate the structure.
 2007-01-09 01:41:26 +00:00
Michael Brown
239965ff3b Added missing includes 2007-01-08 03:03:42 +00:00
Michael Brown
6115356859 Added missing declarations 2007-01-08 02:51:27 +00:00
Michael Brown
aff96c13d2 Added missing include 2007-01-08 02:51:04 +00:00
Michael Brown
afc01a1a7f Split UNDI load/unload out into undiload.c. 2007-01-08 02:48:17 +00:00
Michael Brown
6fc75f659b Separated out UNDI ROM location code into undirom.c, and use struct 
undi_rom rather than struct pxe_driver.  (This is part of the naming
consistency fixes).
 2007-01-08 02:38:10 +00:00
Michael Brown
675fe200e5 Use "struct undi_device" instead of "struct pxe_device", and use the 
function prefix "undinet_" and the variable name "undinic" in undinet.c,
so that we can reserve the variable name "undi" for a struct undi_device.

The idea is that we preserve the Etherboot 5.4 convention that the "UNDI"
code refers to our using an underlying UNDI stack, while the "PXE" code
refers to our providing a PXE API.
 2007-01-08 02:24:53 +00:00
Michael Brown
477a70697a Added PnP BIOS scanning code, separated out from the UNDI driver 2007-01-05 16:10:03 +00:00
Michael Brown
9780fef360 Partial implementation of UNDI loader caller. 2007-01-05 03:24:39 +00:00
Michael Brown
70acce06e4 This file is no longer used 2007-01-04 19:36:31 +00:00
Michael Brown
b12cd68726 Ripped out everything except the ability to send EOI to the PIC. 2007-01-04 19:36:18 +00:00
Michael Brown
0566ab2a2f Added geometry-guessing code based on the partition table 2006-09-08 22:22:03 +00:00
Michael Brown
5a54225aef Added support for INT 13,15; NTLDR calls it (though it may not 
actually do anything with the result, since it carried on using us
even when we returned failure).
 2006-08-27 01:22:01 +00:00
Michael Brown
6abfaa153b Towards making KEEP_IT_REAL work again. 
Fix bug that caused over-allocation of .text16 and .data16 memory areas
by a factor of 16.
 2006-08-24 13:18:05 +00:00
Michael Brown
6fd1bd0510 Added missing check-in 2006-06-09 10:19:17 +00:00
Michael Brown
fdf62528ca It's astonishing how long really fundamental bugs can survive without 
being noticed...
 2006-06-08 15:06:09 +00:00
Michael Brown
191a906338 Fix some remarkably obvious mistakes in pcidirect.h 2006-06-08 14:57:04 +00:00
Michael Brown
e4f8d6eed7 Add a "count" field to struct memory_map. 2006-05-25 00:00:30 +00:00
Michael Brown
986f6ffff1 Define a struct memory_map with a fixed number of entries, rather than 
requiring each caller to decide how many entries it wants to permit.
 2006-05-24 14:41:27 +00:00
Michael Brown
edcf89e2b0 Remove the automatic segment register save and restore; most users of 
REAL_CODE() don't need it.
 2006-05-24 14:11:36 +00:00
Michael Brown
02cf755f3f Removed REAL_EXEC(); there is no longer any code using it. 2006-05-24 14:10:15 +00:00
Michael Brown
103aff3ae2 Added potentially required "\n\t" on the end of asm_code_str 2006-05-24 14:06:28 +00:00
Michael Brown
7a53d07027 Split out REAL_CODE() from REAL_EXEC(), preparatory to removing REAL_EXEC 
completely.
 2006-05-24 09:51:04 +00:00
Michael Brown
83d80d9e79 Remove references to obsoleted REAL_CALL from documentation. 2006-05-24 09:16:48 +00:00
Michael Brown
3b525385af Removed REAL_FRAGMENT and REAL_CALL, and left just REAL_EXEC (which is 
the only one we actually use).  This allows REAL_EXEC fragments to
contain proper references to constraints (e.g. "%w0"), rather than having
to force the use of specific registers.

Note that the "num_constraints" parameter is now completely obsolete, and
that we can probably reduce the syntax to something like
  __asm__ __volatile__ ( REAL_CODE ( "asm statements" )
                         : output constraints
                         : input constraints
                         : clobber );
which would look much more natural, and avoid the need to always specify
a clobber list.


Add userptr_t to libkir.h, to allow it to at least compile.
 2006-05-24 09:14:44 +00:00
Michael Brown
77a65075a6 Replaced memsizes.c with smaller memmap.c, taking advantage of __data16, 
and creating a memory map that's easier to work with than the E820 map.
 2006-05-24 01:37:46 +00:00
Michael Brown
897313007b Add __{text,data}16_array, since there's no way I can see to make the 
usual __{text,data}16 trick work with arrays.  gcc seems to accept the
__asm__ ( asmlabel ) only after the [] of the array declaration, not
before.
 2006-05-23 23:42:45 +00:00
Michael Brown
d48d0fb1bb Add the concept of a "user pointer" (similar to the void __user * in 
the kernel), which encapsulates the information needed to refer to an
external buffer.  Under normal operation, this can just be a void *
equivalent, but under -DKEEP_IT_REAL it would be a segoff_t equivalent.

Use this concept to avoid the need for bounce buffers in int13.c,
which reduces memory usage and opens up the possibility of using
multi-sector reads.

Extend the block-device API and the SCSI block device implementation
to support multi-sector reads.

Update iscsi.c to use user buffers.

Move the obsolete portions of realmode.h to old_realmode.h.

MS-DOS now boots an order of magnitude faster over iSCSI (~10 seconds
from power-up to C:> prompt in bochs).
 2006-05-19 15:06:51 +00:00
Michael Brown
0ab92faedb Use typeof(sizeof(...)) to define a size_t. This stops gcc complaining 
about format errors for %zX arguments.
 2006-05-19 14:51:59 +00:00
Michael Brown
6b6096d28b Strip down i386 PCI configuration space I/O to the bare minimum. A 
typical build will now include 880 bytes of PCI support code, compared to
2327 bytes in Etherboot 5.4.

(There is a slight cost of around 5 extra bytes per access to a
non-constant config space address; this should be an overall win.
Driver-specific accesses will usually be to constant addresses, for
which there is no additional cost.)
 2006-05-17 01:12:11 +00:00
Michael Brown
295e11b2b0 Add INT 13,41 (extensions installation check). LILO's MBR now uses 
linear calls to load the MS-DOS boot sector in my test setup.
 2006-05-14 23:46:28 +00:00
Michael Brown
4435667a00 Add int13_boot(), to allow booting from INT 13 emulated drives. 2006-05-14 13:44:47 +00:00
Michael Brown
b4f941b257 Specify attributes on .text16. 2006-05-14 13:39:27 +00:00
Michael Brown
2421723a15 Rewrote printf and friends to better support standard C semantics. 2006-05-14 02:51:55 +00:00
Michael Brown
5080668704 Provide access to rm_cs and rm_ds from protected-mode code. 2006-05-13 11:45:31 +00:00
Michael Brown
dc8d429ec6 Provide a global counter for the number of interrupts hooked. 2006-05-13 11:44:53 +00:00
Michael Brown
d822b3d4cd Define BIOS data segment in bios.h 2006-05-13 11:43:07 +00:00
Michael Brown
a27defa483 Add flag definitions. 2006-05-13 11:42:07 +00:00
Michael Brown
d2c22ec9bb Add INT 13 emulation layer (which provides an interface to gPXE block 
devices).
 2006-05-13 11:41:36 +00:00
Michael Brown
1ad72e0e79 Add 64-bit byte-swapping operations. 2006-05-13 11:40:39 +00:00
Michael Brown
568cad0ddc (Redoing check-in lost by SourceForge's failure.) 2006-05-13 11:30:03 +00:00
Michael Brown
847f38f4ac (Redoing check-in lost by SourceForge's failure.) 
Add method for hooking real-mode interrupt vectors.
 2006-05-13 11:19:06 +00:00
Michael Brown
f7b963da51 (Redoing check-in lost by SourceForge's failure.) 
Use .text16.data section with "aw" attributes, to avoid section type
conflicts when placing both code and data into .text16.

Add __from_{text16,data16}.
 2006-05-13 11:11:55 +00:00
Michael Brown
97d265f8dc (Redoing check-in lost by SourceForge's failure.) 
Avoid optimisation errors under -fstrict-aliasing.
 2006-05-13 11:10:24 +00:00
Michael Brown
f8e087767b Allow access to variables in .text16 as well as .data16. Chained 
interrupt vectors, for example, will be easiest to handle if placed in
.text16.
 2006-05-06 18:57:31 +00:00
Michael Brown
f4429533a6 Added methods for efficiently declaring and accessing variables in 
.data16.  librm will need to supply "char *data16", i.e. the virtual
address of the start of .data16.
 2006-05-04 17:00:20 +00:00
Michael Brown
9e1dd6402d <name>_size variable is no longer needed, since we don't copy the code. 
However, it's worth adding a .size directive so that objdump reports the
correct sizes for the code fragments.
 2006-05-02 16:38:46 +00:00
Michael Brown
9fcded3d23 Towards a(nother) new real-mode infrastructure, in which we take 
advantage of the fact that we have to have a permanently-resident block
in base memory.
 2006-05-02 15:41:21 +00:00