Michael Brown
3e781eb87f
Merge branch 'xl0-timer'
2008-03-10 13:02:53 +00:00
Michael Brown
12f203c606
[PXE] Add PMM support to romprefix.S (untested)
...
ROM initialisation vector now attempts to allocate a 2MB block using
PMM. If successful, it copies the ROM image to this block, then
shrinks the ROM image to allow for more option ROMs. If unsuccessful,
it leaves the ROM as-is.
ROM BEV now attempts to return to the BIOS, resorting to INT 18 only
if the BIOS stack has been corrupted.
2008-03-09 22:13:07 +00:00
Alexey Zaytsev
8de54ef9aa
Use plain C in timer_rdtsc for division instead of inline asssembly.
...
This also fixes a bug in rdtsc_currticks when the result did not fix in %eax
Signed-off-by: Alexey Zaytsev <zaytsev.a@protei.ru>
2008-03-06 16:06:58 +03:00
Michael Brown
b62f2325ba
[PXEXT] Add PXENV_FILE_EXEC call to PXE extensions API.
...
This allows pxelinux to execute arbitrary gPXE commands. This is
remarkably unsafe (not least because some of the commands will assume
full ownership of memory and do nasty things like edit the e820 map
underneath the calling pxelinux), but it does allow access to the
"sanboot" command.
2008-03-04 18:16:30 +00:00
Alexey Zaytsev
1935439f86
fix the rdtsc namimg
2008-03-02 05:19:29 +03:00
Alexey Zaytsev
379c37bafb
Cleanups
...
Replace a printf with a DBG in timer_rtdsc.c
Replace a printf in timer.c with assert
Return proper error codes from timer drivers
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
2008-03-02 04:36:50 +03:00
Alexey Zaytsev
a1572e0ab0
Modify gPXE core and drivers to work with the new timer subsystem
...
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
2008-03-02 03:41:10 +03:00
Alexey Zaytsev
4006d229e5
Introduce the new timer subsystem.
...
Timer subsystem initialization code in core/timer.c
Split the BIOS and RTDSC timer drivers from i386_timer.c
Split arch/i386/firmware/pcbios/bios.c into the RTSDC
timer driver and arch/i386/core/nap.c
Split the headers properly:
include/unistd.h - delay functions to be used by the
gPXE core and drivers.
include/gpxe/timer.h - the fimer subsystem interface
to be used by the timer drivers
and currticks() to be used by
the code gPXE subsystems.
include/latch.h - removed
include/timer.h - scheduled for removal. Some driver
are using currticks, which is
only for core subsystems.
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
2008-03-02 03:15:07 +03:00
Michael Brown
604c934981
Add DBGLVL_IO to trace all memory-mapped I/O.
2008-02-21 12:44:09 +00:00
Michael Brown
385b7a623d
Guard against corruption of top half of %esp during UNDI ISR
2008-02-13 14:58:20 +00:00
Michael Brown
40990465f1
Merge branch 'master' of rom.etherboot.org:/pub/scm/gpxe
2008-02-11 16:33:37 +00:00
H. Peter Anvin
fc9f016be0
UNDI ISR: save and restore 32-bit registers
...
As written, if the if the UNDI ISR call clobbers the upper halves of
any of the GPRs (which by convention it is permitted to do, and by
paranoia should be expected to do) then nothing in the interrupt
handler will recover the state.
Additionally, save/restore %fs and %gs out of sheer paranoia - it's a
cheap enough operation, and may prevent problems due to poorly written
UNDI stacks.
2008-02-11 15:09:47 +00:00
Michael Brown
f8a0b5f682
Use internal 16-bit stack for added safety.
2008-02-11 15:06:26 +00:00
H. Peter Anvin
9aec835541
undiisr.S: save/restore upper half of %eflags
...
Since we don't know what the UNDI code does, it is safest to
save/restore %eflags even though the lower half of %eflags is
automatically saved by the interrupt itself.
2008-02-10 18:13:39 -08:00
H. Peter Anvin
621c2886aa
UNDI ISR: save and restore 32-bit registers
...
As written, if the if the UNDI ISR call clobbers the upper halves of
any of the GPRs (which by convention it is permitted to do, and by
paranoia should be expected to do) then nothing in the interrupt
handler will recover the state.
Additionally, save/restore %fs and %gs out of sheer paranoia - it's a
cheap enough operation, and may prevent problems due to poorly written
UNDI stacks.
2008-02-10 18:06:10 -08:00
Michael Brown
2c7a9e803c
Remove the (unused) option to override _prefix_link_addr,
...
_textdata_link_addr, _load_addr and _max_align in the linker scripts.
A bug in some versions of ld causes segfaults if the DEFINED() macro
is used in a linker script *and* the -Map option to ld is present.
We don't currently need to override any of these values; if we need to
do so in future then the solution will probably be to always specify
the values on the ld command line, and have the linker script not
define them at all.
2007-12-07 01:34:11 -06:00
Michael Brown
1949641d10
Fix compiler warnings that appear only on OpenBSD.
2007-12-06 14:16:46 -06:00
Michael Brown
26f3a09ccf
Add UUID to DHCP request as option 97 (if available).
2007-11-21 03:29:53 +00:00
Michael Brown
899f5b8ab2
Added definition of a UUID and uuid_ntoa() (for debugging), and
...
implemented smbios_get_uuid().
2007-11-21 02:27:07 +00:00
Michael Brown
68c438954d
Update SMBIOS internal API to be easier to use, and not to require
...
potentially exorbitant amounts of stack space.
2007-11-21 01:58:27 +00:00
Michael Brown
89eaab79c8
Replace "Etherboot" strings with "gPXE".
2007-11-20 02:00:54 +00:00
Michael Brown
755cb8379d
Allow space for the kernel's real-mode .bss. Previously we weren't
...
allowing any space for this, which makes it surprising that bzImage
loading ever worked.
2007-11-04 04:27:38 +00:00
Michael Brown
c482fef058
Add missing attribute(packed) to two structures.
2007-10-29 21:22:00 +00:00
Michael Brown
35ee7e4479
Ensure that empty e820 regions are skipped even at the end of the
...
memory map. (We achieve this by setting CF on the last entry if it is
zero-length; this avoids the need to look ahead to see at each entry
if the *next* entry would be both the last entry and zero-length).
This fixes the "0kB base memory" error message upon starting Windows
2003 on a SunFire X2100.
2007-10-10 20:13:34 +01:00
Michael Brown
56550e400e
Redefine bzimage_exec_context::mem_limit to be the highest permissible
...
byte, rather than the number of permissible bytes (i.e. subtract one
from the value under the previous definition to get the value under
the new definition).
This avoids integer overflow on 64-bit kernels, where
bzhdr.initrd_addr_max may be 0xffffffffffffffff; under the old
behaviour we set mem_limit equal to initrd_addr_max+1, which meant it
ended up as zero. Kernel loads would fail with ENOBUFS.
2007-09-28 01:23:06 +01:00
Michael Brown
881dd8e102
Switch rm_ss and rm_sp back to being words; it'll make it less
...
confusing to read the code.
2007-09-25 20:16:32 +01:00
Michael Brown
42d96bcb07
Don't use the "rep ss movsb" trick to copy the RM stack to the PM
...
stack; it breaks vmxassist.
2007-09-25 20:14:20 +01:00
Michael Brown
0ed066bc50
rm_ss, rm_sp, and pm_esp don't need to be accessed from anywhere
...
outside of librm.S.
2007-09-25 19:20:38 +01:00
Michael Brown
b8a8eea850
Minor refactoring to eliminate duplication.
2007-09-25 19:06:38 +01:00
Michael Brown
dec325fe43
Use full protected mode for access to high memory within prefix, to
...
work around limitations in real-mode virtualisation support on Intel
VT-capable chips.
2007-09-25 18:01:15 +01:00
Michael Brown
a7eee64506
Added more verbose memory-map debugging.
...
Added redundant call to get_memmap() in int13_boot() immediately
before jumping to boot sector, to assist in debugging.
2007-09-21 18:33:17 +01:00
Michael Brown
9c264faa0c
Add const attribute to byte-swapping functions
2007-09-21 01:15:06 +01:00
Michael Brown
a82e6ec2de
Added missing .kpxe prefix.
2007-09-06 15:08:41 +01:00
Michael Brown
01b755704a
Auto-assign drive number only if set to 0xff; almost all applications
...
require that we use drive 0x80, so it should probably be the default.
2007-08-23 20:50:24 +01:00
Michael Brown
eff8b06eff
Separate out arch-independent parts of stdint.h
2007-08-17 19:51:08 +01:00
Michael Brown
950057eeed
Add PXE FILE API.
2007-08-04 01:23:37 +01:00
Michael Brown
688bac1656
Place multiboot command lines in base memory; Xen won't pick them up
...
otherwise. :(
2007-08-02 23:09:03 +01:00
Michael Brown
d4947c05b2
Allow images to hold references to the originating URI.
...
Some shuffling around of the image management code; this needs tidying up.
2007-08-02 20:18:32 +01:00
Michael Brown
9fd6a0418f
Allowed zero-cost enforced ordering of features in startup banner
...
list.
Added FEATURE() macros to most relevant (non-driver) files.
2007-08-02 14:51:03 +01:00
Holger Lubitz
0ebf6cdef4
remove old minorversion!=4 check (added -march a second time)
2007-08-02 01:54:42 +01:00
Holger Lubitz
06eb725cd4
remove x86_64 comments from arch specific Config
...
options are in main makefile now
2007-08-02 01:48:28 +01:00
Michael Brown
726e366e8f
Add code for constructing single-file cpio archives on the fly
2007-08-01 23:10:30 +01:00
Michael Brown
24f32a1945
Initrd concatenation now working
2007-08-01 15:29:15 +01:00
Michael Brown
c5d9114064
Allow loading of multiple initramfs images.
2007-07-31 18:09:18 +01:00
Michael Brown
5e26df0325
Centralise construction of the DHCP request and response packets.
2007-07-31 03:02:21 +01:00
Michael Brown
4ce8d61a5c
Import various libgcc functions from syslinux.
...
Experimentation reveals that gcc ignores -mrtd for the implicit
arithmetic functions (e.g. __udivdi3), but not for the implicit
memcpy() and memset() functions. Mark the implicit arithmetic
functions with __attribute__((cdecl)) to compensate for this.
(Note: we cannot mark with with __cdecl, because we define __cdecl to
incorporate regparm(0) as well.)
2007-07-30 02:43:43 +01:00
Michael Brown
f62d6486d8
GCC's optimiser seems to screw up if this is left static...
2007-07-30 02:42:32 +01:00
Michael Brown
304d1e9fa5
Don't rely on retry.c's periodically calling currticks() in order to
...
allow the UNDI NIC interrupt to happen.
2007-07-29 15:27:47 +01:00
Michael Brown
a6a1052096
Applied a modified version of holger's regparm patches.
2007-07-29 00:17:25 +01:00
Holger Lubitz
0ae6c53bd9
Revert "make __udivmoddi4 static" - gcc links to it implicitly
...
This reverts commit 9e7b165017
.
2007-07-28 23:20:00 +02:00
Holger Lubitz
9a4790667a
make multiboot_load static
2007-07-27 22:01:23 +02:00
Holger Lubitz
dc38303ff9
make nbi_load static
2007-07-27 22:00:51 +02:00
Holger Lubitz
5ec4e2ad50
make eltorito_load static
2007-07-27 21:58:31 +02:00
Holger Lubitz
9e7b165017
make __udivmoddi4 static
2007-07-27 21:39:58 +02:00
Michael Brown
09118cd5bf
Don't overwrite %dl with a (potentially) modified drive number if we
...
already handled the INT13 call.
2007-07-25 02:03:29 +01:00
Michael Brown
d5e39286f7
We probably shouldn't leave interrupts disabled when starting an OS.
2007-07-25 02:02:24 +01:00
Michael Brown
9aa61ad5a2
Add per-file error identifiers
2007-07-24 17:11:31 +01:00
Michael Brown
75912b3b77
Remove some obsolete sections of librm.h and libkir.h.
...
Add some of the missing parts to libkir.h.
2007-07-24 12:46:07 +01:00
Michael Brown
07e11f8af9
Minor debug improvement
2007-07-19 17:01:21 +01:00
Michael Brown
2cfe0dee1f
Don't trash the %ecx value returned by relocate(). This was causing
...
us to round down the size for the relocation copy to the nearest 64kB
(+0x10 bytes); this just happened to work on most machines because the
last 64kB of the image is all-zeroes anyway (it's the .bss).
2007-07-19 16:07:31 +01:00
Michael Brown
a8111e8ab7
Remove INT 13,4b handler; it represents an incomplete feature (CD-ROM
...
emulation support) for an unknown purpose, and breaks grub.
2007-07-19 11:16:05 +01:00
Michael Brown
0d9d2ccbae
Completed definition of struct int13_cdrom_specification, and moved to
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int13.h.
2007-07-19 11:15:01 +01:00
Michael Brown
013d381e3c
Real-mode code might set the direction flag, which would cause carnage.
2007-07-17 13:46:37 +01:00
Michael Brown
c94cdf2b7d
Move .zinfo to libprefix.S; it doesn't belong with the decompression code.
2007-07-17 12:52:54 +01:00
Michael Brown
dc52db4920
Removed dead code identified by symcheck
2007-07-17 01:43:19 +01:00
Michael Brown
38dbe14bbe
Kill off redundant references to the .zprefixes.
2007-07-16 17:26:07 +01:00
Michael Brown
84551d485e
Update all prefixes currently referring to _load_size to include a
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compressor fixup section.
2007-07-16 17:17:26 +01:00
Michael Brown
0929142a15
Rename _rom_size to _load_size_sect, since hdprefix.S also uses it.
2007-07-16 17:03:19 +01:00
Michael Brown
048bbeeebc
Compressed ROM images now work.
2007-07-16 16:58:38 +01:00
Michael Brown
6d2e4e719c
Move uninitialised .data16 variables to .bss16; saves around 2000
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bytes of useless zeroes in the final image.
2007-07-16 13:22:12 +01:00
Michael Brown
389204713f
Kill off some long-redundant CFLAGS
2007-07-16 13:15:12 +01:00
Michael Brown
833d6cc8ec
Add __bss16() macro, and allow use of .bss16 section by removing
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link-time check for section overlaps. (In order to avoid wasting
space in the executable image, .bss16 will overlap with the following
section, which is .text).
2007-07-16 13:10:49 +01:00
Michael Brown
ab859a5355
Use a single _payload_offset linker-defined variable to locate the
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start of the non-prefix blocks in the loaded image, and rely on the
image ordering. This should make introducing compression much easier.
2007-07-15 02:52:02 +01:00
Michael Brown
0b5059c40b
Skip the length field prepended by util/nrv2b.c
2007-07-15 02:01:17 +01:00
Michael Brown
b37e267d1b
Modified calling convention: we now update %esi and %edi just like a
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"rep movsb".
2007-07-15 01:51:32 +01:00
Michael Brown
3feac9465e
"not" doesn't affect flags, "xor $-1" does.
2007-07-15 01:25:13 +01:00
Michael Brown
26473105cd
On advice of hpa: be more patient with the KBC and SCPA methods; retry
...
in a long loop before giving up on them. Record method which worked
and default to that method on next attempt.
2007-07-14 20:56:12 +01:00
Michael Brown
adf192f566
Shrink cpu.c and render it useful for our purposes.
2007-07-14 19:12:13 +01:00
Michael Brown
e330db3c74
Dead code removal.
...
Kill off use of etherboot.h outside drivers/net.
2007-07-14 15:42:26 +01:00
Michael Brown
95c07736cb
Be more aggressive in attempts to enable A20, now that we have the
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optimisation of only trying to do so when necessary.
2007-07-14 14:21:18 +01:00
Michael Brown
8624fdc445
Kill off the enforced RX quota; it only seems to hurt on real hardware.
2007-07-14 00:30:11 +01:00
Michael Brown
57b5e227ff
Use fast in-situ test for gate A20 being set, to cut down on the
...
number of (potentially very slow) gateA20_set operations.
Die with a fatal error if we are unable to set gate A20; if this fails
then we are bound to experience memory corruption at a later stage,
and I'd prefer to pick it up early.
2007-07-13 13:32:49 +01:00
Michael Brown
2ac7694c3e
Improve error reporting for strange length combinations reported by
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the UNDI stack.
Ignore obviously invalid length combinations (as returned by
e.g. VMWare's PXE stack).
Limit to one packet per poll to avoid memory exhaustion.
2007-07-10 20:59:21 +01:00
Michael Brown
efd322091d
Set up %ds *before* testing a value in our data segment (d'oh!).
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Always send EOI; do not chain to BIOS's default interrupt handler.
They are just too unpredictable; at least VMware's seems to kill the
machine if you go anywhere near it.
Disable interrupts after return from PXENV_UNDI_ISR, just in case some
dumb PXE stack enables them.
2007-07-10 17:08:32 +01:00
Michael Brown
f6f9a3098d
Report RX errors via netdev_rx_err()
2007-07-10 17:01:18 +01:00
Michael Brown
fb16f90699
Dump first 64 bytes of chained ISR when debugging is enabled.
2007-07-10 16:57:55 +01:00
Michael Brown
edc4648c39
Protect ISR against failure to unhook.
2007-07-10 04:34:53 +01:00
Michael Brown
4e14b020a5
Master IRQ should be EOIed first, I think.
2007-07-10 04:33:59 +01:00
Michael Brown
19871cbb96
We probably ought not to call INT13 with interrupts disabled.
2007-07-10 04:32:30 +01:00
Michael Brown
027fed72c1
Working code to call the PXE stack from within the ISR.
2007-07-10 04:21:24 +01:00
Michael Brown
cd7e296cbe
Always increase number of BIOS drives when registering
2007-07-09 20:42:04 +01:00
Michael Brown
b90d321dfb
Change %dl fixup rules for INT13:
...
INT 13,08 : read number of drives from 40:75
INT 13,15 : do nothing
all others : restore original value of %dl
2007-07-09 20:37:39 +01:00
Michael Brown
c7d9fdb5b9
Proof of concept; works, but has several hard-coded hacks.
2007-07-09 20:28:40 +01:00
Michael Brown
8bce52d348
Set CF by default, clear on success (rather than clearing and setting
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on failure).
2007-07-09 19:02:41 +01:00
Holger Lubitz
4ff85d9f15
Add -mpreferred-stack-boundary=2 to i386 CFLAGS as it's almost always a win.
2007-07-09 03:32:54 +01:00
Michael Brown
4c418d2100
Use net_device_operations structure and netdev_nullify() to allow for
...
safe dropping of the netdev ref by the driver while other refs still
exist.
Add netdev_irq() method. Net device open()/close() methods should no
longer enable or disable IRQs.
Remove rx_quota; it wasn't used anywhere and added too much complexity
to implementing correct interrupt-masking behaviour in pxe_undi.c.
2007-07-07 16:43:39 +01:00
Holger Lubitz
c7549bcebe
convert to zalloc
2007-07-06 20:19:06 +02:00
Holger Lubitz
bb61774ee4
convert to zalloc
2007-07-06 20:19:06 +02:00
Michael Brown
311637503d
Merge branch 'master' of rom.etherboot.org:/pub/scm/gpxe
2007-07-06 13:31:58 +01:00
Michael Brown
f660e8ef58
Add strlen_user() (will be needed for PXE API extensions)
2007-07-06 13:07:10 +01:00
Marty Connor
74a1c77820
Merge branch 'master' of /pub/scm/gpxe
2007-07-06 08:04:55 -04:00
Marty Connor
28d8d828b3
Rename .lilo extension to .lkrn and updated dependencies
2007-07-06 08:04:06 -04:00
Michael Brown
763a3eab8a
Add .pdsk target (padded .dsk, suitable for qemu).
2007-07-05 23:37:17 +01:00
Michael Brown
fbda4837b0
Allocate heap at first usage, rather than assuming we can fit it in
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below _text. This should help with the gPXE-on-gPXE-via-PXE case.
2007-07-05 22:30:34 +01:00
Michael Brown
07ea125213
Use partition type 0xeb ("EtherBoot"), to avoid any attempts to mount
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the Etherboot partition.
2007-07-05 14:20:55 +01:00
Michael Brown
6e082c9b81
Add .usb target
2007-07-05 14:15:43 +01:00
Michael Brown
a0f078d7f5
Working with multi-sector reads
2007-07-05 13:30:49 +01:00
Michael Brown
66208dd65d
hdprefix that works for LBA only
2007-07-05 12:58:16 +01:00
Michael Brown
839960276d
Miscellaneous efficiency improvements, and extend read_sectors to
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handle multiple sectors.
2007-07-05 12:36:39 +01:00
Michael Brown
3c2d50e5de
Added active partition locator, and simple MBR built using it.
2007-07-05 00:21:01 +01:00
Michael Brown
738ebaf4a5
Revert "Added master boot record capable of locating active partition"
...
This reverts commit 844d088c51
.
2007-07-05 00:20:04 +01:00
Michael Brown
844d088c51
Added master boot record capable of locating active partition
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(including logical partitions).
2007-07-05 00:05:26 +01:00
Michael Brown
5e3f2247e0
Kill off lots of warnings in via-velocity.c by correcting these definitions.
2007-07-04 23:36:16 +01:00
Michael Brown
ac69b85adb
UNDI loader entry point implemented; seems to work.
2007-07-04 03:23:02 +01:00
Michael Brown
1ecb9acb87
Fix typo
2007-07-04 02:25:07 +01:00
Michael Brown
dca470cb21
Add (untested) UNDI loader C-level implementation.
2007-07-03 23:41:35 +01:00
Michael Brown
7db6b4b79c
Merge branch 'master' of rom.etherboot.org:/pub/scm/gpxe
2007-07-03 23:10:16 +01:00
Michael Brown
89349d7fad
Separated out initialisation functions from startup/shutdown functions.
2007-07-03 23:09:56 +01:00
Marty Connor
79238335b0
remove obsolete file: src/arch/i386/prefix/int19exit.c
2007-07-03 16:24:06 -04:00
Michael Brown
cbd4542dc0
Merge branch 'master' of rom.etherboot.org:/pub/scm/gpxe
2007-07-03 21:09:26 +01:00
Marty Connor
9b3c4e4d79
Warnings purge: src/arch/i386, src/core/disk.c, ramdisk, autoboot
2007-07-03 16:02:15 -04:00
Michael Brown
fae10a7ca1
We don't actually use the reset functions anywhere, and nothing really
...
provides them.
2007-07-03 20:34:51 +01:00
Michael Brown
2dc8ed1eb8
Work around Etherboot 5.4 bug when multiple packets are received.
2007-07-03 15:53:29 +01:00
Michael Brown
0958726ebb
It's not just Etherboot that fails to generate TX completions.
2007-07-03 14:43:57 +01:00
Michael Brown
adb3dd03e5
Document TX completion bug.
2007-07-03 13:17:58 +01:00
Michael Brown
071356d976
Ensure that pxe_netdev is set before starting up PXE NBP.
2007-07-03 00:02:26 +01:00
Michael Brown
e42eba4af4
Use a common base-memory packet buffer for DHCP construction (as used
...
by PXE and NBI) and UNDI packets (as used by undinet and UNDI).
2007-07-02 18:33:41 +01:00
Michael Brown
5f17089b14
pxe_netdev now holds a reference to the network device.
...
Use generic fields in struct device_description rather than assuming
that the struct device * is contained within a pci_device or
isapnp_device; this assumption is broken when using the undionly
driver.
Add PXENV_UNDI_SET_STATION_ADDRESS.
2007-07-02 17:43:32 +01:00
Michael Brown
d5451d210c
Add ability to resolve relative symbols as well as locate absolute ones.
2007-06-30 22:59:15 +01:00
Michael Brown
8f6a4e8140
Add gdbsym.c object to help with running gdb-to-qemu
2007-06-30 22:43:31 +01:00
Michael Brown
e1646b4080
Place the actual version string in .data16, rather than just the
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pointer to it.
2007-06-30 21:36:54 +01:00
Michael Brown
8130443f9f
Separate out pxe_start_nbp() from pxe_image.c into pxe_call.c
...
Implement PXENV_RESTART_TFTP.
2007-06-30 14:56:35 +01:00
Michael Brown
d71b116f54
Fix stack on return from PXE NBP so that we can return properly.
2007-06-28 23:37:49 +01:00
Michael Brown
045fb24557
Use internal real-mode stack from non-returnable prefixes
2007-06-28 21:56:14 +01:00
Michael Brown
00473f0952
Revert "Move stack to below 0x7c00; leaving it at the default location"
...
This reverts commit 03ca71c38d
.
2007-06-28 21:50:36 +01:00
Michael Brown
03ca71c38d
Move stack to below 0x7c00; leaving it at the default location
...
(0x7ef4) tends to really screw up anything that loads at 0x7c00...
2007-06-28 21:15:47 +01:00
Michael Brown
f77815f2b1
Kill off hotplug.h and just make net devices normal reference-counted
...
structures.
DHCP still broken and #if 0'd out.
2007-06-27 14:48:31 +01:00
Michael Brown
1ae549b892
Add our own trivial version of stdarg.h. This makes our build
...
entirely self-hosted (which avoids problems when building the same
tree on multiple systems - e.g. when you have /home NFS-mounted).
Also saves around 50 bytes in total - not sure why.
2007-06-09 18:11:07 +01:00
Michael Brown
3e2c6b6736
pkbuff->iobuf changeover
...
Achieved via Perl using:
perl -pi -e 's/pk_buff/io_buffer/g; s/Packet buffer/I\/O buffer/ig; ' \
-e 's/pkbuff\.h/iobuf.h/g; s/pkb_/iob_/g; s/_pkb/_iob/g; ' \
-e 's/pkb/iobuf/g; s/PKB/IOB/g;'
2007-05-19 18:39:40 +00:00
Michael Brown
0d9b3e2dd2
Add 32-bit support.
...
Generate DHCP data block for images.
2007-03-22 16:18:46 +00:00
Michael Brown
ff7d0af585
Provide a buffer in base memory for code to fill with generated DHCP data.
2007-03-22 16:18:07 +00:00
Michael Brown
160e66dbb9
Typo
2007-03-20 18:55:00 +00:00
Michael Brown
5578d3b2de
Support 32-bit (linear) NBI images. We don't yet provide a bootp data
...
block, so first32.c dies immediately.
2007-03-14 00:39:12 +00:00
Michael Brown
37127ea90c
Added .nbi as a format.
2007-03-11 00:57:26 +00:00
Michael Brown
628f6eddcc
Make _load_size accurately reflect the number of bytes in the actual
...
image file.
2007-03-11 00:54:35 +00:00
Michael Brown
520d9c36af
Updated ISAPnP, EISA, MCA and ISA buses to current device model.
...
ISA 3c509 is currently non-functional, although the EISA (3c509-eisa) and
MCA (3c529) variants should build OK.
None of this code is yet tested.
2007-03-10 18:08:33 +00:00
Michael Brown
22ed1fbaf1
Add ability to read serial number from SMBIOS
2007-02-01 20:52:12 +00:00
Michael Brown
f06059ab97
More assertions
2007-02-01 02:18:22 +00:00
Michael Brown
c650c8c84a
Also print out stack pointer (with optional stack dump)
2007-02-01 02:17:59 +00:00
Michael Brown
406b20a64d
Assert that division result is correct
2007-01-31 23:58:52 +00:00
Michael Brown
c789e8640b
Added __umoddi3
2007-01-31 22:26:14 +00:00
Michael Brown
7d9267561b
Don't call PXENV_STOP_UNDI in the kpxeprefix. This slighy breaks the
...
clean separation between loading and starting, but does mean that more
PXE stacks survive the process.
2007-01-29 15:21:10 +00:00
Michael Brown
2cf1e33df1
Split bootsector execution code out into bootsector.c.
...
Added basic El Torito ISO image boot capability
2007-01-29 04:21:38 +00:00
Michael Brown
b3b6b25aeb
Handle (64-bit) / (32-bit) = (64-bit), i.e. one step beyond that
...
provided by the divl instruction.
2007-01-28 19:34:17 +00:00
Michael Brown
f59281d8f6
Yet more synonyms that people tend to use.
2007-01-26 01:30:16 +00:00
Michael Brown
6a765fdc15
Use base "0" in strtoul for consistency with "mem="
2007-01-24 22:54:08 +00:00
Michael Brown
99cb46943f
"vga=" is specified in decimal, not hex.
2007-01-22 23:56:24 +00:00
Michael Brown
ebb00e032c
Misread the definition of the type_of_loader field; it should include a
...
version.
2007-01-19 15:40:01 +00:00
Michael Brown
73b09ecba6
Use stdio.h instead of vsprintf.h
2007-01-19 01:13:12 +00:00
Michael Brown
5d57cd47a2
Declaring the CPU architecture in the middle of an assembly file is
...
somewhat redundant, and also causes gas to complain when we include
the profiling code (which uses an i586 instruction).
2007-01-18 18:53:32 +00:00
Michael Brown
bd95927386
Accelerate memcpy() by around 32% on large, dword-aligned copies.
2007-01-18 15:18:02 +00:00
Michael Brown
544fa25928
Rename e{malloc,realloc,free} to u{malloc,realloc,free}, to more obviously
...
reflect the fact that they allocate and deallocate user memory (i.e.
things reached through a userptr_t).
2007-01-16 08:36:42 +00:00
Michael Brown
a5f6408d8e
We can now load an initrd as well as a kernel
2007-01-14 16:09:01 +00:00
Michael Brown
b9f99858ab
Make the getmemsize() prototype available in memsizes.h, for code that
...
doesn't want to go to the hassle of processing a full memory map.
2007-01-14 15:32:25 +00:00
Michael Brown
10c9b03cdb
Actually, the initrd image should be architecture-independent.
2007-01-14 15:07:11 +00:00
Michael Brown
f92e04dea4
Add dummy "initrd" image format, just so that images can be marked as
...
initrds.
2007-01-14 15:03:39 +00:00
Michael Brown
8a490146bf
Copy command line at execution time rather than load time.
...
Parse command line for "vga=" and "mem=" parameters
2007-01-14 14:29:30 +00:00
Michael Brown
3ccd7335f0
Split bzimage_load into separate functions
2007-01-14 13:36:33 +00:00
Michael Brown
97a3037f76
Can start a Linux kernel directly (albeit with no initrd support)
2007-01-14 12:34:35 +00:00
Michael Brown
3cbf0db0a3
Remove some references to no-longer-existent source files.
...
Add a path for isolinux.bin that is correct on my system; hopefully it
will work on others too.
2007-01-14 11:52:22 +00:00
Michael Brown
b04b0ddc31
.lilo and derived targets (e.g. .iso) now load properly.
2007-01-14 11:50:44 +00:00
Michael Brown
77d280968a
Obsoleted by arch/i386/image/multiboot.c
2007-01-14 11:45:28 +00:00
Michael Brown
784e10635a
Can almost start a kernel now. It dies with "No setup signature found"
2007-01-14 06:36:20 +00:00
Michael Brown
b07161f397
Placeholder bzImage support
2007-01-14 04:27:25 +00:00
Michael Brown
797edf28b7
Replace image->entry with image->priv.
2007-01-14 04:04:28 +00:00
Michael Brown
3bdbfe1f00
Mostly updated. Won't work yet.
2007-01-14 03:49:07 +00:00
Michael Brown
644f3674e6
Obsolete for some time
2007-01-14 02:24:41 +00:00
Michael Brown
7bc03d37a2
Select a PXE network device before starting PXE NBP.
...
Move pxe_boot() code to pxe_image.c
2007-01-14 02:20:10 +00:00
Michael Brown
55e6d7b70c
Use debug autocolourisation.
...
Shut down before jumping to the multiboot image.
2007-01-14 00:57:43 +00:00
Michael Brown
dca369ddc3
Call hide_etherboot() from startup(), rather than requiring the prefix to
...
do it.
2007-01-14 00:53:56 +00:00
Michael Brown
ece4ff929e
Use _text, rather than assuming _text==0.
2007-01-14 00:03:07 +00:00
Michael Brown
f547f148d3
Use {get,set}_fbms() so that allocated base memory is correctly hidden.
2007-01-14 00:01:16 +00:00
Michael Brown
0b0e34e667
Provide {get,set}_fbms() in basemem.h.
...
set_fbms() will also update the E820 hidden region.
2007-01-13 23:57:31 +00:00
Michael Brown
aaed3d50a8
Some operating systems get a nasty shock if a region of the E820 map seems
...
to start on a non-page boundary. Make life safer by rounding out our
edited regions.
2007-01-13 23:38:33 +00:00
Michael Brown
d0f4e9a54b
Add some trace messages for important events
2007-01-13 17:54:41 +00:00
Michael Brown
f11900a9c6
I prefer IMAGE_XXX to XXX_IMAGE.
...
Add IMAGE_PXE to use the new image format framework. "kernel pxelinux.0"
now works.
2007-01-13 17:28:51 +00:00
Michael Brown
bd863e4112
Add header for pxe_boot()
2007-01-13 17:23:44 +00:00
Michael Brown
4b77061881
Pick up the return status code from the correct place now that we
...
don't overwrite the parameter block until *after* the debug code.
2007-01-13 16:55:57 +00:00
Michael Brown
5817c9f114
When an UNDI API call fails, print everything there is to know about it.
2007-01-13 16:53:55 +00:00
Michael Brown
6a3c76c8e0
Always send EOI. We can't feasibly share interrupts (since we have no
...
clue what the "previous" interrupt handler will do, which could range
from "just an iret" to "disable the interrupt"), and that means that
we have to take responsibility for ACKing all interrupts. Joy.
2007-01-13 14:45:26 +00:00
Michael Brown
86171c53f4
Damn Broadcom and their damned incorrect assumptions about x86 memory
...
allocation.
2007-01-13 01:48:12 +00:00
Michael Brown
bcd6ca3291
Place multiboot tables in base memory; at least some OSes won't see it
...
if we don't.
2007-01-12 16:25:05 +00:00
Michael Brown
0f29e0e46e
Ensure multiboot modules are in ascending order of memory start
...
address, to work around OS bugs.
2007-01-12 12:03:19 +00:00
Michael Brown
53e948bba8
Fix the memory map.
2007-01-12 11:38:04 +00:00
Michael Brown
6fdc6c81a6
Force probing of multiboot before ELF.
2007-01-12 08:10:35 +00:00
Michael Brown
9debfed07a
Place command-line inline, to save on memory allocation hassles.
2007-01-12 05:26:19 +00:00
Michael Brown
77b7640af4
Fix the only bug (which was to use DBGC() in place of DBG()!) and add 4kB
...
alignment.
2007-01-12 03:28:03 +00:00
Michael Brown
45ec9c907e
First version of an external memory allocator (not tested)
2007-01-12 03:15:29 +00:00
Michael Brown
1d313234b3
Rename copy_user() to memcpy_user(). Add memmove_user() and
...
userptr_add().
2007-01-12 03:14:15 +00:00
Michael Brown
859da6bd32
Allow external code to update hidden memory regions.
2007-01-12 03:13:04 +00:00
Michael Brown
687c1e3227
Nothing (not even hidemem.c) uses this file!
2007-01-12 02:45:46 +00:00
Michael Brown
39a8ed827c
Long since obsoleted by arch/i386/scripts/i386.lds
2007-01-12 02:43:10 +00:00
Michael Brown
2e088d9afc
Obsoleted by arch/i386/interface/pxe/pxe_call.c
2007-01-12 02:42:14 +00:00
Michael Brown
f81bf3bc52
We *do* have a __data16_array after all!
2007-01-12 02:37:47 +00:00
Michael Brown
e4c6418ac0
We may be required to page-align modules, so let's make sure we catch
...
it if we don't.
2007-01-12 00:09:16 +00:00
Michael Brown
f59ad50504
Provide registration mechanism for loaded images, so that we can e.g.
...
refer to them by name from the command line, or build them into a
multiboot module list.
Use setting image->type to disambiguate between "not my image" and "bad
image"; this avoids relying on specific values of the error code.
2007-01-11 23:43:29 +00:00
Michael Brown
f31d91bce5
Populate multiboot information structure before calling OS.
2007-01-11 21:21:02 +00:00
Michael Brown
ddbc60b5ae
Whoever put together the grub multiboot.h header is insane.
2007-01-11 21:20:27 +00:00
Michael Brown
200d92c76d
Avoid namespace clashes
2007-01-11 19:42:26 +00:00
Michael Brown
bcc98c78b8
Added fields present in the documentation but not in the header file.
2007-01-11 19:41:13 +00:00
Michael Brown
dc51af59a4
Capable of starting a multiboot kernel (albeit without the multiboot
...
information table yet).
2007-01-11 18:41:15 +00:00
Michael Brown
9196e9069c
Add PHYS_CODE, for use as in __asm__ ( PHYS_CODE ( ... ) ), comparable
...
to the REAL_CODE interface.
2007-01-11 18:40:46 +00:00
Michael Brown
d488a172eb
Capable of loading a multiboot image into memory
2007-01-11 17:44:42 +00:00
Michael Brown
143e3b84a4
Downloaded from current grub CVS.
2007-01-11 16:22:03 +00:00
Michael Brown
4fc9333159
Move include/image.h to include/gpxe/image.h
2007-01-11 16:04:36 +00:00
Michael Brown
7ad1c2eaa8
Removed the Etherboot-specific ELF-image code and replaced it with a
...
generic ELF loader, to be used by the multiboot code.
2007-01-11 14:44:03 +00:00
Michael Brown
3634e705b7
Remove osloader.c and replace with a prep_segment() that uses userptr_t
...
and get_memmap() in image/segment.c
2007-01-11 14:32:26 +00:00
Michael Brown
ceca6b185c
Added user_to_phys() and memset_user().
2007-01-11 14:27:27 +00:00
Michael Brown
c980cdd0aa
Move memmap.h out of arch/i386; it no longer contains anything
...
architecture-dependent and is needed by the ELF code.
2007-01-11 14:08:44 +00:00
Michael Brown
c6a4055fae
Add phys_to_user() and copy_user().
2007-01-11 14:01:20 +00:00
Michael Brown
e2dcd05b67
Update buffer-handling code to enable expandable buffers.
2007-01-11 03:50:47 +00:00
Michael Brown
fdc97499bf
Add device description fields to struct device.
2007-01-10 15:27:48 +00:00
Michael Brown
489a4004d7
Give UNDI device a more meaningful name.
2007-01-10 05:52:04 +00:00
Michael Brown
dad5274522
Add "name" field to struct device to allow human-readable hardware device
...
names.
Add "dev" pointer in struct net_device to tie network interfaces back to a
hardware device.
Force natural alignment of data types in __table() macros. This seems to
prevent gcc from taking the unilateral decision to occasionally increase
their alignment (which screws up the table packing).
2007-01-10 04:22:09 +00:00
Michael Brown
c65fae2475
Add RX quotas to the net device poll() method. This avoids the problem
...
of alloc_pkb() exhaustion when e.g. an iSCSI-booted DOS session is left
idle for a long time at the C:\ prompt and builds up a huge packet
backlog.
2007-01-09 21:47:01 +00:00
Michael Brown
18e5353bed
Rename pkb_available() to pkb_tailroom() for consistency with Linux's
...
skb_tailroom(). Add pkb_headroom().
2007-01-09 20:56:31 +00:00
Michael Brown
b7fcfe8ece
Added net device TX queue; this will be needed to support the PXE UNDI API
...
(which will need us to wait for TX completions).
Added debug autocolourisation to netdevice.c
2007-01-09 20:18:31 +00:00
Michael Brown
3c2cc59d25
Added ability to break ISR processing over several calls to poll().
...
This will allow us to implement RX quotas.
2007-01-09 17:04:10 +00:00
Michael Brown
aa7bda7b47
Send EOI after enabling interrupt, in case the device had asserted IRQ
...
to the PIC while it was disabled.
2007-01-09 14:53:19 +00:00
Michael Brown
a2ffe8c123
Allow boot sector to completely destroy real-mode stack, but still
...
manage to return control.
2007-01-09 14:13:59 +00:00
Michael Brown
a9369bb503
Leave protected-mode return address on PM stack when issuing a
...
real_call(), rather than moving it to the RM stack and back again.
This allows the real-mode function to completely destroy the stack
contents, provided that it manages to return to real_call().
2007-01-09 14:13:06 +00:00
Michael Brown
2738bdf74b
Obsoleted by drivers/net/undionly.c
2007-01-09 03:22:11 +00:00
Michael Brown
d606edb41d
Added UNDI root bus driver (which saves including all the PCI bus code,
...
UNDI ROM code etc. when you just want a "undi.kpxe"-type image).
This driver cannot be used in conjunction with any other driver (it will
crash), or in any other format than .kpxe (it just won't find any network
devices).
2007-01-09 03:20:22 +00:00
Michael Brown
159930862f
Added missing call to undinet_remove()
2007-01-09 03:08:01 +00:00
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
ed44e3730d
Avoid erasing non-existent signatures in undi_unload()
2007-01-09 02:53:24 +00:00
Michael Brown
a2be828a33
Avoid leaving preloaded_undi with invalid PXENV+/!PXE structure
...
addresses if the signature checks fail.
2007-01-09 02:52:28 +00:00
Michael Brown
697bcc9d24
Since we now always unload the base code stack (even if we keep UNDI),
...
we can never return to the PXE stack and must always use INT 18.
2007-01-09 02:46:58 +00:00
Michael Brown
f2f492a536
If preloaded device matches, use that rather than going via the UNDI
...
loader.
2007-01-09 02:32:06 +00:00
Michael Brown
2436dac281
Populate preloaded_undi device when applicable.
2007-01-09 02:29:54 +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
47222d5ed8
Call PXENV_UNDI_GET_NIC_TYPE to identify NIC physical device.
...
Record all information required for populating a struct undi_device.
Make debugging output more human-readable.
2007-01-09 01:42:28 +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
fbdebac5f4
Copy pxelinux's shutdown sequence: use UNLOAD_STACK without STOP_BASE,
...
and call UNDI_SHUTDOWN first to make sure the NIC is in a safe state.
2007-01-08 05:06:26 +00:00
Michael Brown
8f8af10b22
New strategy: always stop both base code and UNDI. Always free base code
...
memory (unless we get an error while stopping the base code). Leave UNDI
resident (though stopped) for .kpxe.
Still need to add code to record the device identification parameters
prior to stopping UNDI.
2007-01-08 03:48:26 +00:00
Michael Brown
075d79f6d4
Checking in obsolete but working memory-scanning code just for the record
2007-01-08 03:45:00 +00:00
Michael Brown
67e824b539
Neaten up debug messages
2007-01-08 03:42:19 +00:00
Michael Brown
f08093b0d9
Remove spurious debug message
2007-01-08 03:37:32 +00:00
Michael Brown
f0edd11c7d
Now split out into undirom.c and undiload.c
2007-01-08 03:35:51 +00:00
Michael Brown
07e5d4e3dc
Added any-PCI-device UNDI driver
2007-01-08 03:34:47 +00:00
Michael Brown
66f7bcc785
Tidied up debug messages
2007-01-08 03:34:06 +00:00
Michael Brown
a6ba48e51e
Added debugging statements
2007-01-08 03:04:54 +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
359c888aec
Remove obsolete includes
2007-01-08 02:39:56 +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
36c1e1aa57
Renamed undi.c to undinet.c. (undi.c will become the UNDI PCI driver)
2007-01-08 02:02:07 +00:00
Michael Brown
234d81728a
Obsolete
2007-01-08 02:00:55 +00:00
Michael Brown
d3558fdd3a
Remove accidentally checked-in code
2007-01-07 19:05:28 +00:00
Michael Brown
85a41b25fe
Move START_UNDI, UNDI_STARTUP, UNDI_INITIALIZE and
...
UNDI_GET_INFORMATION calls into drivers/net/undi.c. undi_probe() now
gets given a pxe_device representing a PXE stack that has been loaded
into memory but not initialised in any way.
2007-01-07 19:02:17 +00:00
Michael Brown
23cb837951
Remember to enable/disable the interrupt at the PIC.
...
Handle failures in undi_open() properly.
2007-01-07 13:31:39 +00:00
Michael Brown
9ab5c0dde7
Remove redundant debug message
2007-01-05 16:15:50 +00:00
Michael Brown
fa9055197d
UNDI loader routine now works
2007-01-05 16:11:05 +00:00
Michael Brown
477a70697a
Added PnP BIOS scanning code, separated out from the UNDI driver
2007-01-05 16:10:03 +00:00
Marty Connor
7dee2556f4
Fixed typo
2007-01-05 16:09:47 +00:00
Michael Brown
9780fef360
Partial implementation of UNDI loader caller.
2007-01-05 03:24:39 +00:00
Michael Brown
0638945c7e
Add PXE driver-scanning code, capable of locating all PXE ROMs in a system
...
and matching them up to (e.g. PCI) devices.
2007-01-05 01:52:06 +00:00
Michael Brown
ef50ea0b2b
Renamed undi_net.c to undi.c.
2007-01-04 19:43:35 +00:00
Michael Brown
6cf488dcf7
Obsolete; net driver functionality is now in undi_net.c and bus driver
...
functionality is now in pxebus.c. (Not all bus functionality is ported
across yet.)
2007-01-04 19:42:05 +00:00
Michael Brown
7e07dfb2f4
Added PXE bus driver (with support only for using PXE structures found
...
lying about in memory, not for loading from ROM), and UNDI net driver.
2007-01-04 19:38:34 +00:00
Michael Brown
e28db95de6
Obsolete
2007-01-04 19:37:31 +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
de2fc50f4c
Add as a separate file so that we can do "make bin/xxxx.kpxe" rather than
...
having to edit PXELOADER_KEEP_ALL as a config option.
2007-01-04 19:35:10 +00:00
Michael Brown
290c5ee779
Don't automatically call gateA20_set() when returning from a real-mode
...
call.
2007-01-04 04:32:18 +00:00
Michael Brown
f58f193633
Engage brain: since when was zero >= 0x80 ?
2006-12-21 05:15:26 +00:00
Michael Brown
9c3b4e5b0b
Some BIOSes return 0xe0 for extended characters. Just assume that
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anything over 0x80 is an extended character.
2006-12-21 00:07:48 +00:00
Michael Brown
dbb7b30cca
Return ANSI sequences for special keys
2006-12-20 23:42:28 +00:00
Michael Brown
43d976edd0
Prevent NULL from ever pointing to some real code or data. (This was
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causing the serial console to ignore input, because it happened to end up
linked with serial_ischar() at address 0, which core/console.c decided was
invalid).
2006-12-20 20:28:20 +00:00
Michael Brown
0aa1223264
Optimise bios_putchar for speed(!) by avoiding two separate real-mode
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calls. This does make a visible difference when clearing the screen with
werase() inside bochs or qemu.
2006-12-19 01:15:05 +00:00
Michael Brown
8b3a4c9862
Add basic ANSI escape sequence support to BIOS console
2006-12-18 01:19:38 +00:00
Michael Brown
8a45f619a9
Fix building on gas versions that don't auto-insert addr32 prefixes
2006-12-12 19:07:18 +00:00
Michael Brown
8bff0f0619
Avoid draining the keyboard buffer during gateA20_set(). It shouldn't
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technically be necessary, because the "enable A20" command requires
only that the keyboard controller is ready to accept input (i.e. that
its input buffer is empty), and shouldn't also require that the
keyboard is ready to send output (i.e. that its output buffer is also
empty). See http://www.smsc.com/main/tools/io-bios/42i.pdf section
3.1 ("Command Invocation") for a justification.
gateA20_set() is called on every real-mode transition (in case some
idiot piece of external code such as Intel's PXE stack decided it
would be fun to re-disable A20), so draining the keyboard buffer means
that we end up losing keypresses on some systems. In particular, this
makes typing at the command line almost impossible, and causes
Etherboot to ignore Ctrl-Alt-Del.
We should really implement a gateA20_test() function to verify that
gate A20 has been correctly enabled, and think about adding other
commonly-used methods such as Fast Gate A20.
2006-12-05 09:45:39 +00:00
Michael Brown
88e38fa148
We don't actually have a stdio.h header file. Our printf() functions are
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defined in vsprintf.h. (This may change, since vsprintf.h is a
non-standard name, but for now it's the one to use.)
There should be no need to include vsprintf.h just for DBG() statements,
since include/compiler.h forces it in for a debug build anyway.
2006-09-27 10:58:14 +00:00
Marty Connor
6ac78f6aff
added stdio.h to includes for DBG compilation
2006-09-27 05:57:06 +00:00
Marty Connor
c4964c3e3a
fix args to _disable routine
2006-09-19 15:01:16 +00:00
Marty Connor
56a3ff7202
get rid of compile warnings (except intentionally generated ones)
2006-09-14 20:54:05 +00:00
Marty Connor
c30623b739
fix DBG macro unknown variable
2006-09-14 20:34:53 +00:00
Michael Brown
0566ab2a2f
Added geometry-guessing code based on the partition table
2006-09-08 22:22:03 +00:00
Michael Brown
78dd963c1f
Check to see if we've reached the end of the map before attempting to
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skip past an empty region, otherwise we end up generating an infinitely
long e820 map. (Yes, there *are* real systems that provide e820 maps
with a zero-length region at the end...)
2006-08-31 13:25:45 +00:00
Michael Brown
5a54225aef
Added support for INT 13,15; NTLDR calls it (though it may not
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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
40724431e8
Added support for INT 13,15; NTLDR calls it (though it may not
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actually do anything with the result, since it carried on using us
even when we returned failure).
2006-08-26 23:42:02 +00:00
Michael Brown
19883779ba
Use TEXT16_CODE() rather than manually specifying ".code16" etc, since
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our manual ".code32" will break a KEEP_IT_REAL build.
2006-08-24 18:43:28 +00:00
Michael Brown
6abfaa153b
Towards making KEEP_IT_REAL work again.
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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
4afc494b83
Both the !PXE and PXENV+ structures must be paragraph-aligned
2006-08-09 18:22:25 +00:00
Michael Brown
fd07f56f0d
Note to self: learn to count.
2006-08-09 00:56:07 +00:00
Michael Brown
843bcc291d
Added missing __from_text16()s when passing pointers to PXE NBP.
2006-08-09 00:39:21 +00:00