rom loader: make vga+rom loading configurable.

The rom_add_vga() and rom_add_option() macros are transformed into
functions.  They look at the new rom_enable_driver_roms variable
and only do something if it is set to non-zero, making vga+option rom
loading runtime option.  pc_init() sets rom_enable_driver_roms to 1.

With this in place we can move the rom loading calls from pc.c to the
individual drivers.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/hw/pc.c b/hw/pc.c
index 4cd8ec6..c7b8c50 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1137,6 +1137,7 @@ static void pc_init1(ram_addr_t ram_size,
 
 
 
+    rom_enable_driver_roms = 1;
     option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE);
     cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset);