X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=device_tree.c;h=56af24b397282bbecb14c3cb37cd21bbdf968e39;hb=95efb20c714800de7eaf991f19dab6e7a29d5364;hp=acae53e6b6319619eb96c34685af35631027adec;hpb=4b1b1c896fb38d435f3d350c44b1bdc8b56600a4;p=qemu.git

diff --git a/device_tree.c b/device_tree.c
index acae53e6b..56af24b39 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -20,10 +20,10 @@
 
 #include "config.h"
 #include "qemu-common.h"
-#include "device_tree.h"
+#include "sysemu/device_tree.h"
 #include "hw/loader.h"
-#include "qemu-option.h"
-#include "qemu-config.h"
+#include "qemu/option.h"
+#include "qemu/config-file.h"
 
 #include <libfdt.h>
 
@@ -127,7 +127,7 @@ static int findnode_nofail(void *fdt, const char *node_path)
 }
 
 int qemu_devtree_setprop(void *fdt, const char *node_path,
-                         const char *property, void *val_array, int size)
+                         const char *property, const void *val_array, int size)
 {
     int r;
 
@@ -178,6 +178,36 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path,
     return r;
 }
 
+const void *qemu_devtree_getprop(void *fdt, const char *node_path,
+                                 const char *property, int *lenp)
+{
+    int len;
+    const void *r;
+    if (!lenp) {
+        lenp = &len;
+    }
+    r = fdt_getprop(fdt, findnode_nofail(fdt, node_path), property, lenp);
+    if (!r) {
+        fprintf(stderr, "%s: Couldn't get %s/%s: %s\n", __func__,
+                node_path, property, fdt_strerror(*lenp));
+        exit(1);
+    }
+    return r;
+}
+
+uint32_t qemu_devtree_getprop_cell(void *fdt, const char *node_path,
+                                   const char *property)
+{
+    int len;
+    const uint32_t *p = qemu_devtree_getprop(fdt, node_path, property, &len);
+    if (len != 4) {
+        fprintf(stderr, "%s: %s/%s not 4 bytes long (not a cell?)\n",
+                __func__, node_path, property);
+        exit(1);
+    }
+    return be32_to_cpu(*p);
+}
+
 uint32_t qemu_devtree_get_phandle(void *fdt, const char *path)
 {
     uint32_t r;
@@ -274,3 +304,18 @@ int qemu_devtree_add_subnode(void *fdt, const char *name)
     g_free(dupname);
     return retval;
 }
+
+void qemu_devtree_dumpdtb(void *fdt, int size)
+{
+    QemuOpts *machine_opts;
+
+    machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (machine_opts) {
+        const char *dumpdtb = qemu_opt_get(machine_opts, "dumpdtb");
+        if (dumpdtb) {
+            /* Dump the dtb to a file and quit */
+            exit(g_file_set_contents(dumpdtb, fdt, size, NULL) ? 0 : 1);
+        }
+    }
+
+}