From 6fb4efc68f5c0e095153510dcfa8b54a42e914ba Mon Sep 17 00:00:00 2001 From: "Mark A. Greer" Date: Mon, 16 Oct 2006 13:50:05 -0700 Subject: [POWERPC] Add flatdevtree source Add the latest version of the flatdevtree code and corresponding glue. A phandle table now tracks values returned by ft_find_device(). The value returned by ft_find_device() is a phandle which is really an index into the phandle table. The phandle table contains the address of the corresponding node. When the flat dt is edited/moved, the node pointers in the phandle table are updated accordingly so no phandles kept by the caller become stale. Signed-off-by: Mark A. Greer Signed-off-by: Paul Mackerras --- arch/powerpc/boot/flatdevtree_misc.c | 56 ++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 arch/powerpc/boot/flatdevtree_misc.c (limited to 'arch/powerpc/boot/flatdevtree_misc.c') diff --git a/arch/powerpc/boot/flatdevtree_misc.c b/arch/powerpc/boot/flatdevtree_misc.c new file mode 100644 index 000000000000..c7f9adbf827d --- /dev/null +++ b/arch/powerpc/boot/flatdevtree_misc.c @@ -0,0 +1,56 @@ +/* + * This file does the necessary interface mapping between the bootwrapper + * device tree operations and the interface provided by shared source + * files flatdevicetree.[ch]. + * + * Author: Mark A. Greer + * + * 2006 (c) MontaVista Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ +#include +#include "flatdevtree.h" +#include "ops.h" + +static struct ft_cxt cxt; + +static void *ft_finddevice(const char *name) +{ + return ft_find_device(&cxt, name); +} + +static int ft_getprop(const void *phandle, const char *propname, void *buf, + const int buflen) +{ + return ft_get_prop(&cxt, phandle, propname, buf, buflen); +} + +static int ft_setprop(const void *phandle, const char *propname, + const void *buf, const int buflen) +{ + return ft_set_prop(&cxt, phandle, propname, buf, buflen); +} + +static void ft_pack(void) +{ + ft_end_tree(&cxt); +} + +static unsigned long ft_addr(void) +{ + return (unsigned long)cxt.bph; +} + +int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device) +{ + dt_ops.finddevice = ft_finddevice; + dt_ops.getprop = ft_getprop; + dt_ops.setprop = ft_setprop; + dt_ops.ft_pack = ft_pack; + dt_ops.ft_addr = ft_addr; + + return ft_open(&cxt, dt_blob, max_size, max_find_device, + platform_ops.realloc); +} -- cgit v1.2.3