hw: Clean up bogus default boot order

We set default boot order "cad" in every single machine definition
except "pseries" and "moxiesim", even though very few boards actually
care for boot order, and "cad" makes sense for even fewer.

Machines that care:

* pc and its variants

  Accept up to three letters 'a', 'b' (undocumented alias for 'a'),
  'c', 'd' and 'n'.  Reject all others (fatal with -boot).

* nseries (n800, n810)

  Check whether order starts with 'n'.  Silently ignored otherwise.

* prep, g3beige, mac99

  Extract the first character the machine understands (subset of
  'a'..'f').  Silently ignored otherwise.

* spapr

  Accept an arbitrary string (vl.c restricts it to contain only
  'a'..'p', no duplicates).

* sun4[mdc]

  Use the first character.  Silently ignored otherwise.

Strip characters these machines ignore from their default boot order.

For all other machines, remove the unused default boot order
alltogether.

Note that my rename of QEMUMachine member boot_order to
default_boot_order and QEMUMachineInitArgs member boot_device to
boot_order has a welcome side effect: it makes every use of boot
orders visible in this patch, for easy review.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 79f6b4e310..49be8fd8b4 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -1348,14 +1348,12 @@ static QEMUMachine lm3s811evb_machine = {
     .name = "lm3s811evb",
     .desc = "Stellaris LM3S811EVB",
     .init = lm3s811evb_init,
-    DEFAULT_MACHINE_OPTIONS,
 };
 
 static QEMUMachine lm3s6965evb_machine = {
     .name = "lm3s6965evb",
     .desc = "Stellaris LM3S6965EVB",
     .init = lm3s6965evb_init,
-    DEFAULT_MACHINE_OPTIONS,
 };
 
 static void stellaris_machine_init(void)