Through recent additions to the rombios the code section of the post
function has filled up considerably. When I enable the BX_TCGBIOS
compile time option the BIOS crashes since the post section code
(starts at $e05b) spills over into the nmi entry point (starts at
$e2c3). as86 doesn't cause an error when building.
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
On AMD cpus, HVM S3 resume was hanging in the bios when trying
to load the x_firmware_waking_vector from absolute
address 0xEA01C (that is, a segment offset greater than 64kB).
This change also now uses 20-bits (instead of 16) from the FACS
standard firmware_waking_vector.
Signed-off-by: Juergen Keil <jk@tools.de>
F10 to select boot device. This will be rarely used, and it is
possible to hit F10 before the message is displayed and the keypress
will still register. So in practice it is quite possibel to use this
boot feature reliably without needing a multi-second delay.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
- add S3 package in ACPI DSDT table. Guest OS will get S3 value from
this package and write the value to PM1A control register to
trigger S3 suspend.
- Add S3 resume logic in rombios post code. the CMOS shutdown register
is used to indicate if this is a S3 resume.
- if it is s3 resume, rombios will get wakeup vector from ACPI FACS
table and jump to wakeup vector. Per ACPI spec, the wakeup vector
jumping must be the forms CS:IP, in which CS=3D(wakeup vector>>4)
IP=3D(wakeup vector)&0xF, for example, for vector=3D0x12345,
CS:IP=3D0x1234:0x5
Note: clobber_entry_point will clobber the post entry, which make S3
resume not work. We will directly jmp to POST Entry if it in S3
Resume path.
Signed-off-by: Yu Ke <ke.yu@intel.com>
Signed-off-by: Ke Liping <liping.ke@intel.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
I ran into this when I was reviewing what was outstanding to get
NetWare to run fully virtualized.
The BIOS emulator code has the segment and offset backward in the
returned buffer for the int 13h, fn 48h BIOS call.
Signed-off-by: Bruce Rogers <brogers@novell.com>
The attached patch implements a mini BIOS menu for choosing a
non-default
boot device. When a guest starts it'll display
'Press F10 to select boot device'
And wait 3 seconds, before continuing with the normal boot device. If
they press the F10 key, a menu is shown allowing a choice between
floppy, harddisk, cdrom and network (PXE).
I can't take credit for this originally - Jeremy Katz wrote it for
KVM, I merely re-diffed the patch to work against Xen's QEMU/BIOS code
tree. It has been tested in Fedora successfully against 3.1.x and 3.2.x
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
CC: Jeremy Katz <katzj@redhat.com>
If more than one boot device has been selected, the currently selected
number displayed in the menu is wrong.
Signed-off-by: Stefano Stabellini <stefano.stabellini@citrix.com>
Fix IPL measurement of El Torito CD boot and some eventlog formats.
The TCG BIOS extensions are described here:
https://www.trustedcomputinggroup.org/specs/PCClient/TCG_PCClientImplementationforBIOS_1-20_1-00.pdf
- fix cdrom (El Torito) boot (8.2.5.6 El Torito, p63)
tcpa_ipl() is modified to support various boot devices.
move some measurement code into cdrom_boot() function.
- fix EV_IPL (0Dh) event (10.4.1 Event Types, p76)
eventfield size should be zero
- fix EV_SEPARATOR event (3.2.2 Integrity Collection and Reporting,
p32)
change eventfield to -1 (0xFFFFFFFF) from "---------------"
- add "Returned INT 19h" event (8.2.3 Logging of Boot Events, p59)
actually, tcgbios does not call int19h, but we extend this
tentatively
Signed-off-by: Seiji Munetoh <seiji.munetoh@gmail.com>
- portability fix in Makefile: mkhex is not bash specific
- GNU od separates column with one blank, BSD od uses eight blanks.
Change sed to deal with this.
- Add a fourth sed to fix a build error on NetBSD
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Once the presence of LPT1 is baked into a Windows guest, it gets upset
if it is subsequently removed. Hence we add the 'LTP1' device object
back into the ACPI DSDT, and remove IRQ 7 from the list of IRQs usable
by the PCI-ISA links.
Signed-off-by: Keir Fraser <keir@xensource.com>
extensions. mdelay() can more easily be implemented by polling the
DRAM refresh bit in port 0x61. And this does not mess with state that
a guest may be relying on.
Signed-off-by: Keir Fraser <keir@xensource.com>
Was reading argument from wrong stack location with recent versions of
bcc. Doing the access from [bp] rather than [sp] is safer as the
former does not change all the time.
Signed-off-by: Keir Fraser <keir@xensource.com>
- Add a missing break into the switch statement
- Simplify the code that switches from protected mode into real mode
by letting it spill eax; this also fixes the case where the stack is
above 0xffff.
- reformat the source for 80 columns
- remove some comments that were relevant when the TCG extensions were
direct part of the real-mode Bochs BIOS
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
definition from the ACPI DSDT. This avoids conflict with FDC on IRQ6
(it is a bit more likely that someone will want to connect a floppy
image to a guest than it is that anyone will ever care about
parallel-port functionality).
Signed-off-by: Keir Fraser <keir@xensource.com>
This patch places some tcpa calls into the rombios that had previously
not applied anymore or were not set.
Force the reads from MMIO memory locations that the compiler otherwise
optimizes away (-O2) if there was an immediate write to the same
memory location before.
Use #define'd constants wherever possible.
Fix all remaining compiler warnings.
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
compiled with gcc and linked into the hvmloader as a byte-array.
Hvmloader allocates memory (rounded up to next 64kb) from the e820
table
below 4GB, copies and relocates the 32bit code in the allocated area
and
copies a jumptable (located in a section '.biosjumptable') pointing to
the 'exported' functions into the Bochs BIOS's memory area to link the
two code sections. The memory area has been reserved and can be
identified with the signature '___JMPT'.
In the Bochs BIOS only stub functions are provided. These load the
index
of a particular function in the jump table, switch to protected mode
and
call the function in the high memory area. The stack is prepared such
that functions compiled by gcc can just pick the parameters from the
stack as usual - this means that the 16bit real-mode return address is
taken off the stack. The stub functions should have the same signature
as those in 32bit space. For ABI compatibility reasons parameters
inside
the Bochs BIOS stubs should all be 32bit wide.
This patch includes a test function that calls three gcc-compiled
functions in the high memory area and displays their success status.
Simple tests are done doing multiplication and addition of 32-bit
numbers and reading and modification of a static variable. These
functions test the interface and the relocation code. The test code is
removed in patch part 3.
Signed-off-by: Stefan Berger <stefanb@us.ibm.com>
This is rudimentary support for parts of the BIOS Boot Specification,
just enough to use Etherboot ROM images.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
TODO:
1. Fix IO-APIC ID to not conflict with LAPIC IDS.
2. Fix i8259 device model (seems to work already though!).
3. Add INTSRC overrides in MPBIOS and ACPI tables so
that PCI legacy IRQ routing always ends up at an
IO-APIC input with level trigger. Restricting link
routing to {5,6,10,11} and setting overrides for all
four of those would work.
Signed-off-by: Keir Fraser <keir@xensource.com>
executes an idling HLT. This allow us to re-enable the 'shutdown on
HLT-with-interrupts-disabled' heuristic.
Signed-off-by: Keir Fraser <keir@xensource.com>
Keir Fraser
Keir Fraser
kfraser@localhost.localdomain
Tim Deegan
kaf24@localhost.localdomain