[Qemu-devel] [RFC v0 4/4] arm: boot: Add support for Linux specific boot devs

[Peter Crosthwaite]

If booting Linux, call the Linux specific init routine for all devs
that support it.

Signed-off-by: Peter Crosthwaite <address@hidden>

---
Doesn't solve the problem of conditional setup, e.g. GIC needs to only
do NS setup on NS boot. I think this should be solved by passing the
boot_info to the GIC as opaque data.
---
 hw/arm/boot.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 1e7fd28..2cf0dcb 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -18,6 +18,8 @@
 #include "qemu/config-file.h"
 #include "exec/address-spaces.h"
 
+#include "hw/guest/linux.h"
+
 /* Kernel boot protocol is specified in the kernel docs
  * Documentation/arm/Booting and Documentation/arm64/booting.txt
  * They have different preferred image load offsets from system RAM base.
@@ -442,6 +444,19 @@ fail:
     return -1;
 }
 
+static int do_linux_dev_init(Object *obj, void *opaue)
+{
+    if (object_dynamic_cast(obj, TYPE_LINUX_DEVICE)) {
+        LinuxDevice *ld = LINUX_DEVICE(obj);
+        LinuxDeviceClass *ldc = LINUX_DEVICE_GET_CLASS(obj);
+
+        if (ldc->linux_init) {
+            ldc->linux_init(ld);
+        }
+    }
+    return 0;
+}
+
 static void do_cpu_reset(void *opaque)
 {
     ARMCPU *cpu = opaque;
@@ -504,8 +519,11 @@ static void do_cpu_reset(void *opaque)
             } else {
                 info->secondary_cpu_reset_hook(cpu, info);
             }
+            object_child_foreach_recursive(object_get_root(),
+                                           do_linux_dev_init, NULL);
         }
     }
+
 }
 
 /**
-- 
2.4.5.3.g6a5966f