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powerpc: Add del_node() for early boot code to prune inapplicable devices. 

Some platforms have variants that can share most of a flat device tree but need
a few devices selectively pruned at boot time.  This adds del_node() to ops.h
to allow access to the existing fdt_del_node().

Signed-off-by: Mike Ditto <mditto@consentry.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Mike Ditto 2008-10-21 11:32:29 +00:00 committed by Benjamin Herrenschmidt
parent 201bdc868d
commit 71773f0337
2 changed files with 12 additions and 0 deletions
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6
arch/powerpc/boot/libfdt-wrapper.c
View File

@ -105,6 +105,11 @@ static int fdt_wrapper_setprop(const void *devp, const char *name,
return check_err(rc);
}
static int fdt_wrapper_del_node(const void *devp)
{
return fdt_del_node(fdt, devp_offset(devp));
}
static void *fdt_wrapper_get_parent(const void *devp)
{
return offset_devp(fdt_parent_offset(fdt, devp_offset(devp)));
@ -174,6 +179,7 @@ void fdt_init(void *blob)
dt_ops.create_node = fdt_wrapper_create_node;
dt_ops.find_node_by_prop_value = fdt_wrapper_find_node_by_prop_value;
dt_ops.find_node_by_compatible = fdt_wrapper_find_node_by_compatible;
dt_ops.del_node = fdt_wrapper_del_node;
dt_ops.get_path = fdt_wrapper_get_path;
dt_ops.finalize = fdt_wrapper_finalize;

6
arch/powerpc/boot/ops.h
View File

@ -40,6 +40,7 @@ struct dt_ops {
const int buflen);
int (*setprop)(const void *phandle, const char *name,
const void *buf, const int buflen);
int (*del_node)(const void *phandle);
void *(*get_parent)(const void *phandle);
/* The node must not already exist. */
void *(*create_node)(const void *parent, const char *name);
@ -126,6 +127,11 @@ static inline int setprop_str(void *devp, const char *name, const char *buf)
return -1;
}
static inline int del_node(const void *devp)
{
return dt_ops.del_node ? dt_ops.del_node(devp) : -1;
}
static inline void *get_parent(const char *devp)
{
return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;