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authorAlexander Graf <agraf@suse.de>2012-05-17 16:58:55 +0200
committerAlexander Graf <agraf@suse.de>2012-06-24 01:04:46 +0200
commit3601b572820ee5f3676ab24c068a4e011b72236d (patch)
treef8938085fbe4531baca75a487b6ff76c59b2f539 /device_tree.c
parentce36252cc1711a5e222ed68e72235088aec2529d (diff)
downloadqemu-arm-3601b572820ee5f3676ab24c068a4e011b72236d.tar.gz
dt: add helper for phandle allocation
Phandle references work by having 2 pieces: - a "phandle" 1-cell property in the device tree node - a reference to the same value in a property we want to point to the other node To generate the 1-cell property, we need an allocation mechanism that gives us a unique number space. This patch adds an allocator for these properties. Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'device_tree.c')
-rw-r--r--device_tree.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/device_tree.c b/device_tree.c
index d0378961f0..75412747b7 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -191,6 +191,13 @@ int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
return qemu_devtree_setprop_cell(fdt, node_path, property, phandle);
}
+uint32_t qemu_devtree_alloc_phandle(void *fdt)
+{
+ static int phandle = 0x8000;
+
+ return phandle++;
+}
+
int qemu_devtree_nop_node(void *fdt, const char *node_path)
{
int r;