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author | Alexander Graf <agraf@suse.de> | 2012-05-17 16:58:55 +0200 |
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committer | Alexander Graf <agraf@suse.de> | 2012-06-24 01:04:46 +0200 |
commit | 3601b572820ee5f3676ab24c068a4e011b72236d (patch) | |
tree | f8938085fbe4531baca75a487b6ff76c59b2f539 /device_tree.c | |
parent | ce36252cc1711a5e222ed68e72235088aec2529d (diff) | |
download | qemu-3601b572820ee5f3676ab24c068a4e011b72236d.zip qemu-3601b572820ee5f3676ab24c068a4e011b72236d.tar.gz qemu-3601b572820ee5f3676ab24c068a4e011b72236d.tar.bz2 |
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.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/device_tree.c b/device_tree.c index d037896..7541274 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; |