resume: Don't attempt to use generic reboot mechanisms on QEMU

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" <dgilbert@redhat.com>
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
5 files changed
tree: 6f1cdb6c241ea0d65363e7bf9352555121cd60e8
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/