vl: move rom_load_all after machine init done

On ARM, commit ac9d32e3 postponed the
memory preparation for boot until the machine init done notifier. This
has for consequence to insert ROM at machine init done time.

However the rom_load_all function stayed called before the ROM are
inserted. As a consequence the rom_load_all function does not do
everything it is expected to do, on ARM.

It currently registers the ROM reset notifier but does not iterate through
the registered ROM list. the isrom field is not set properly. This latter
is used to report info in the monitor and also to decide whether the
rom->data can be freed on ROM reset notifier.

To fix that regression the patch moves the rom_load_all call after
machine init done. We also take the opportunity to rename the rom_load_all
function into rom_check_and_resgister_reset() and integrate the
rom_load_done in it.
Signed-off-by: NEric Auger <eric.auger@linaro.org>
Reported-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-Id: <1434470874-22573-1-git-send-email-eric.auger@linaro.org>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/core/loader.c

@@ -933,7 +933,7 @@ static void rom_reset(void *unused)
     }
 }
 
-int rom_load_all(void)
+int rom_check_and_register_reset(void)
 {
     hwaddr addr = 0;
     MemoryRegionSection section;
@@ -957,12 +957,8 @@ int rom_load_all(void)
         memory_region_unref(section.mr);
     }
     qemu_register_reset(rom_reset, NULL);
-    return 0;
-}
-
-void rom_load_done(void)
-{
     roms_loaded = 1;
+    return 0;
 }
 
 void rom_set_fw(FWCfgState *f)

include/hw/loader.h

@@ -75,8 +75,7 @@ MemoryRegion *rom_add_blob(const char *name, const void *blob, size_t len,
                            void *callback_opaque);
 int rom_add_elf_program(const char *name, void *data, size_t datasize,
                         size_t romsize, hwaddr addr);
-int rom_load_all(void);
-void rom_load_done(void);
+int rom_check_and_register_reset(void);
 void rom_set_fw(FWCfgState *f);
 int rom_copy(uint8_t *dest, hwaddr addr, size_t size);
 void *rom_ptr(hwaddr addr);

vl.c

@@ -4579,18 +4579,15 @@ int main(int argc, char **argv, char **envp)
 
     qdev_machine_creation_done();
 
-    if (rom_load_all() != 0) {
-        fprintf(stderr, "rom loading failed\n");
-        exit(1);
-    }
-
     /* TODO: once all bus devices are qdevified, this should be done
      * when bus is created by qdev.c */
     qemu_register_reset(qbus_reset_all_fn, sysbus_get_default());
     qemu_run_machine_init_done_notifiers();
 
-    /* Done notifiers can load ROMs */
-    rom_load_done();
+    if (rom_check_and_register_reset() != 0) {
+        fprintf(stderr, "rom check and register reset failed\n");
+        exit(1);
+    }
 
     qemu_system_reset(VMRESET_SILENT);
     if (loadvm) {