From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:44319) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sc3a9-0007wR-Kz for qemu-devel@nongnu.org; Tue, 05 Jun 2012 19:55:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sc3Z5-0002QZ-6n for qemu-devel@nongnu.org; Tue, 05 Jun 2012 19:54:37 -0400 From: Alexander Graf Date: Wed, 6 Jun 2012 01:52:58 +0200 Message-Id: <1338940402-28502-8-git-send-email-agraf@suse.de> In-Reply-To: <1338940402-28502-1-git-send-email-agraf@suse.de> References: <1338940402-28502-1-git-send-email-agraf@suse.de> Subject: [Qemu-devel] [PATCH 07/31] dt: add helper for phandle allocation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "qemu-devel@nongnu.org Developers" Cc: qemu-ppc Mailing List 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 --- device_tree.c | 7 +++++++ device_tree.h | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/device_tree.c b/device_tree.c index d4f1f0a..317bdd0 100644 --- a/device_tree.c +++ b/device_tree.c @@ -220,6 +220,13 @@ 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; diff --git a/device_tree.h b/device_tree.h index 5464dc7..f37a4da 100644 --- a/device_tree.h +++ b/device_tree.h @@ -35,6 +35,7 @@ int qemu_devtree_setprop_string(void *fdt, const char *node_path, int qemu_devtree_setprop_phandle(void *fdt, const char *node_path, const char *property, const char *string); uint32_t qemu_devtree_get_phandle(void *fdt, const char *path); +uint32_t qemu_devtree_alloc_phandle(void *fdt); int qemu_devtree_nop_node(void *fdt, const char *node_path); int qemu_devtree_add_subnode(void *fdt, const char *name); -- 1.6.0.2