since QEMU_CFG_NB_CPUS not going away anytime soon
and serves the same purpose as just added "etc/boot-cpus" fw_cfg
drop support for "etc/boot-cpus" while this code is not
in use yet (i.e. QEMU with "etc/boot-cpus" hasn't been released)
and reuse QEMU_CFG_NB_CPUS instead of it.

Signed-off-by: Igor Mammedov <[email protected]>
(cherry picked from commit b98c658)

If the HBA supports 64-bit addressing, the registers may contain
non-zero values, for example after reboot as a leftover from the
OS driving the adapter.

Reviewed-by: Paolo Bonzini <[email protected]>
Signed-off-by: Ladi Prosek <[email protected]>
(cherry picked from commit 106543d)

You only want this information for debugging. As it also slows down the
boot considerably, as, for example, for every character of the GRUB
menu, something is sent over the serial console.

Therefore, increase the debugging level to 9.

Signed-off-by: Paul Menzel <[email protected]>
(cherry picked from commit 970af16)

If one of the ps2 ports is enabled prior to the ps2 controller reset
then it is possible a device event (eg, key press or mouse move) could
be mistaken for the controller reset response code.  This would result
in a failure and the keyboard would be disabled during the boot.
Always disabling the keyboard and mouse prior to reset ensures that
the controller reset return code can be read properly.

Tested-by: Paul Menzel <[email protected]>
Signed-off-by: Kevin O'Connor <[email protected]>
(cherry picked from commit dbf9dd2)

This allows BIOS to write data back to QEMU using the DMA interface and
provides a higher-level abstraction to write to a fw_cfg file

Signed-off-by: Ben Warren <[email protected]>
Reviewed-by: Laszlo Ersek <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
(cherry picked from commit f991822)

This is a little cleaner and matches how the command structures are
defined in QEMU.

Signed-off-by: Ben Warren <[email protected]>
Reviewed-by: Laszlo Ersek <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
(cherry picked from commit e5bebc7)

This command is similar to ADD_POINTER, but instead of patching
memory, it writes the pointer back to QEMU over the DMA interface.

Signed-off-by: Ben Warren <[email protected]>
Reviewed-by: Laszlo Ersek <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
(cherry picked from commit bb9cbbc)

Due to memory contraints, when resuming from S3 the fw_cfg "files" API
isn't available.  This adds a simple API to get a file 'key', and to
write to the file using the key as a reference.

Signed-off-by: Ben Warren <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
Reviewed-by: Laszlo Ersek <[email protected]>
(cherry picked from commit 336b60b)

Any pointers to BIOS-allocated memory that were written back to QEMU
fw_cfg files are replayed when resuming from S3 sleep.

Signed-off-by: Ben Warren <[email protected]>
Reviewed-by: Laszlo Ersek <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
Signed-off-by: Kevin O'Connor <[email protected]>
(cherry picked from commit 8f598a4)

On QEMU it's necessary to manually reset the BIOS memory region
between 0xc0000-0x100000 on a reboot.  After this manual memory reset
is completed, it's not valid to use the generic reset mechanisms.
Rename qemu_prep_reset() to qemu_reboot() and change the function to
immediately reboot after the code memcpy.

This fixes a bug that could cause code corruption on reboots - calling
the udelay() function (as invoked by i8042_reboot and/or pci_reboot)
was not valid after the BIOS was memcpy'd.

Reported-by: "Dr. David Alan Gilbert" <[email protected]>
Tested-by: Dr. David Alan Gilbert <[email protected]>
Signed-off-by: Kevin O'Connor <[email protected]>
(cherry picked from commit c68aff5)

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>

Signed-off-by: Kamil Wcislo <[email protected]>