From: Alexander Graf <agraf@suse.de>
Date: Tue, 22 May 2012 12:28:50 +0000 (+0200)
Subject: PPC: e500: enable manual loading of dtb blob
X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~3973^2~18
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d1b935659b77ff8e9d4cb84e3f75679f634401f3;p=sdk%2Femulator%2Fqemu.git

PPC: e500: enable manual loading of dtb blob

We want to be able to override the automatically created device tree
by using the -dtb option. Implement this for the mpc8544ds machine.

Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/hw/ppce500_mpc8544ds.c b/hw/ppce500_mpc8544ds.c
index f8a3d9a..fa10df2 100644
--- a/hw/ppce500_mpc8544ds.c
+++ b/hw/ppce500_mpc8544ds.c
@@ -113,6 +113,27 @@ static int mpc8544_load_device_tree(CPUPPCState *env,
                                 0x0, 0x10000 };
     QemuOpts *machine_opts;
     const char *dumpdtb = NULL;
+    const char *dtb_file = NULL;
+
+    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (machine_opts) {
+        dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
+        dtb_file = qemu_opt_get(machine_opts, "dtb");
+    }
+
+    if (dtb_file) {
+        char *filename;
+        filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_file);
+        if (!filename) {
+            goto out;
+        }
+
+        fdt = load_device_tree(filename, &fdt_size);
+        if (!fdt) {
+            goto out;
+        }
+        goto done;
+    }
 
     fdt = create_device_tree(&fdt_size);
     if (fdt == NULL) {
@@ -302,10 +323,7 @@ static int mpc8544_load_device_tree(CPUPPCState *env,
     qemu_devtree_setprop_cell(fdt, pci, "#address-cells", 3);
     qemu_devtree_setprop_string(fdt, "/aliases", "pci0", pci);
 
-    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
-    if (machine_opts) {
-        dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
-    }
+done:
     if (dumpdtb) {
         /* Dump the dtb to a file and quit */
         FILE *f = fopen(dumpdtb, "wb");