mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 06:30:39 +00:00
babdbde68f
Add a way to find the byte offset of a property within the device tree. This is only supported with the normal libfdt implementation since fdtget does not provide this information. Signed-off-by: Simon Glass <sjg@chromium.org>
113 lines
3 KiB
Text
113 lines
3 KiB
Text
/* File: libfdt.i */
|
|
%module libfdt
|
|
|
|
%{
|
|
#define SWIG_FILE_WITH_INIT
|
|
#include "libfdt.h"
|
|
%}
|
|
|
|
%pythoncode %{
|
|
def Raise(errnum):
|
|
raise ValueError('Error %s' % fdt_strerror(errnum))
|
|
|
|
def Name(fdt, offset):
|
|
name, len = fdt_get_name(fdt, offset)
|
|
return name
|
|
|
|
def String(fdt, offset):
|
|
offset = fdt32_to_cpu(offset)
|
|
name = fdt_string(fdt, offset)
|
|
return name
|
|
|
|
def swap32(x):
|
|
return (((x << 24) & 0xFF000000) |
|
|
((x << 8) & 0x00FF0000) |
|
|
((x >> 8) & 0x0000FF00) |
|
|
((x >> 24) & 0x000000FF))
|
|
|
|
def fdt32_to_cpu(x):
|
|
return swap32(x)
|
|
|
|
def Data(prop):
|
|
set_prop(prop)
|
|
return get_prop_data()
|
|
%}
|
|
|
|
%include "typemaps.i"
|
|
%include "cstring.i"
|
|
|
|
%typemap(in) void* = char*;
|
|
|
|
typedef int fdt32_t;
|
|
|
|
struct fdt_property {
|
|
fdt32_t tag;
|
|
fdt32_t len;
|
|
fdt32_t nameoff;
|
|
char data[0];
|
|
};
|
|
|
|
/*
|
|
* This is a work-around since I'm not sure of a better way to copy out the
|
|
* contents of a string. This is used in dtoc/GetProps(). The intent is to
|
|
* pass in a pointer to a property and access the data field at the end of
|
|
* it. Ideally the Data() function above would be able to do this directly,
|
|
* but I'm not sure how to do that.
|
|
*/
|
|
#pragma SWIG nowarn=454
|
|
%inline %{
|
|
static struct fdt_property *cur_prop;
|
|
|
|
void set_prop(struct fdt_property *prop) {
|
|
cur_prop = prop;
|
|
}
|
|
%}
|
|
|
|
%cstring_output_allocate_size(char **s, int *sz, free(*$1));
|
|
%inline %{
|
|
void get_prop_data(char **s, int *sz) {
|
|
*sz = fdt32_to_cpu(cur_prop->len);
|
|
*s = (char *)malloc(*sz);
|
|
if (!*s)
|
|
*sz = 0;
|
|
else
|
|
memcpy(*s, cur_prop + 1, *sz);
|
|
}
|
|
%}
|
|
|
|
%typemap(in) (const void *) {
|
|
if (!PyByteArray_Check($input)) {
|
|
SWIG_exception_fail(SWIG_TypeError, "in method '" "$symname" "', argument "
|
|
"$argnum"" of type '" "$type""'");
|
|
}
|
|
$1 = (void *) PyByteArray_AsString($input);
|
|
}
|
|
|
|
const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
|
|
int fdt_path_offset(const void *fdt, const char *path);
|
|
int fdt_first_property_offset(const void *fdt, int nodeoffset);
|
|
int fdt_next_property_offset(const void *fdt, int offset);
|
|
const char *fdt_strerror(int errval);
|
|
const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
|
|
int offset,
|
|
int *OUTPUT);
|
|
const char *fdt_get_name(const void *fdt, int nodeoffset, int *OUTPUT);
|
|
const char *fdt_string(const void *fdt, int stroffset);
|
|
int fdt_first_subnode(const void *fdt, int offset);
|
|
int fdt_next_subnode(const void *fdt, int offset);
|
|
|
|
%typemap(in) (void *) {
|
|
if (!PyByteArray_Check($input)) {
|
|
SWIG_exception_fail(SWIG_TypeError, "in method '" "$symname" "', argument "
|
|
"$argnum"" of type '" "$type""'");
|
|
}
|
|
$1 = PyByteArray_AsString($input);
|
|
}
|
|
|
|
int fdt_delprop(void *fdt, int nodeoffset, const char *name);
|
|
|
|
const char *fdt_strerror(int errval);
|
|
int fdt_pack(void *fdt);
|
|
|
|
int fdt_totalsize(const void *fdt);
|
|
int fdt_off_dt_struct(const void *fdt);
|