hw/boards: Do not create unusable default if=sd drives

A number of machines create an if=sd drive by default even though
they lack an SD bus, and therefore cannot use the drive.

This drive is created when the machine sets flag
@auto_create_sdcard.

See for example running HMP "info block" on the HPPA C3700 machine:

  $ qemu-system-hppa -M C3700 -monitor stdio -S
  (qemu) info block

  floppy0: [not inserted]
      Removable device: not locked, tray closed

  sd0: [not inserted]
      Removable device: not locked, tray closed

  $ qemu-system-hppa -M C3700 -sd /bin/sh
  qemu-system-hppa: -sd /bin/sh: machine type does not support if=sd,bus=0,unit=0

Delete that from machines that lack an SD bus.

Note, only the ARM and RISCV targets use such feature:

 $ git grep -wl IF_SD hw | cut -d/ -f-2 | sort -u
 hw/arm
 hw/riscv
 $

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20250204200934.65279-5-philmd@linaro.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index 3bd2449575..0aeaad3bec 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -440,7 +440,6 @@ static void leon3_generic_machine_init(MachineClass *mc)
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3");
     mc->default_ram_id = "leon3.ram";
     mc->max_cpus = MAX_CPUS;
-    mc->auto_create_sdcard = true;
 }
 
 DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)