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-rw-r--r--tools/fdtgrep.c123
1 files changed, 81 insertions, 42 deletions
diff --git a/tools/fdtgrep.c b/tools/fdtgrep.c
index 7eabcab439..f1ff1946bd 100644
--- a/tools/fdtgrep.c
+++ b/tools/fdtgrep.c
@@ -63,6 +63,7 @@ struct display_info {
int types_inc; /* Mask of types that we include (FDT_IS...) */
int types_exc; /* Mask of types that we exclude (FDT_IS...) */
int invert; /* Invert polarity of match */
+ int props_up; /* Imply properties up to supernodes */
struct value_node *value_head; /* List of values to match */
const char *output_fname; /* Output filename */
FILE *fout; /* File to write dts/dtb output */
@@ -375,8 +376,9 @@ static int display_fdt_by_regions(struct display_info *disp, const void *blob,
const char *str;
int str_base = fdt_off_dt_strings(blob);
- for (offset = 0; offset < fdt_size_dt_strings(blob);
- offset += strlen(str) + 1) {
+ for (offset = 0;
+ offset < (int)fdt_size_dt_strings(blob);
+ offset += strlen(str) + 1) {
str = fdt_string(blob, offset);
int len = strlen(str) + 1;
int show;
@@ -431,7 +433,7 @@ static int dump_fdt_regions(struct display_info *disp, const void *blob,
{
struct fdt_header *fdt;
int size, struct_start;
- int ptr;
+ unsigned int ptr;
int i;
/* Set up a basic header (even if we don't actually write it) */
@@ -575,15 +577,65 @@ static int check_type_include(void *priv, int type, const char *data, int size)
}
/**
- * h_include() - Include handler function for fdt_find_regions()
+ * check_props() - Check if a node has properties that we want to include
+ *
+ * Calls check_type_include() for each property in the nodn, returning 1 if
+ * that function returns 1 for any of them
+ *
+ * @disp: Display structure, holding info about our options
+ * @fdt: Devicetree blob to check
+ * @node: Node offset to check
+ * @inc: Current value of the 'include' variable (see h_include())
+ * Return: 0 to exclude, 1 to include, -1 if no information is available
+ */
+static int check_props(struct display_info *disp, const void *fdt, int node,
+ int inc)
+{
+ int offset;
+
+ for (offset = fdt_first_property_offset(fdt, node);
+ offset > 0 && inc != 1;
+ offset = fdt_next_property_offset(fdt, offset)) {
+ const struct fdt_property *prop;
+ const char *str;
+
+ prop = fdt_get_property_by_offset(fdt, offset, NULL);
+ if (!prop)
+ continue;
+ str = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
+ inc = check_type_include(disp, FDT_NODE_HAS_PROP, str,
+ strlen(str));
+ }
+
+ /* if requested, check all subnodes for this property too */
+ if (inc != 1 && disp->props_up) {
+ int subnode;
+
+ for (subnode = fdt_first_subnode(fdt, node);
+ subnode > 0 && inc != 1;
+ subnode = fdt_next_subnode(fdt, subnode))
+ inc = check_props(disp, fdt, subnode, inc);
+ }
+
+ return inc;
+}
+
+/**
+ * h_include() - Include handler function for fdt_first_region()
*
* This function decides whether to include or exclude a node, property or
- * compatible string. The function is defined by fdt_find_regions().
+ * compatible string. The function is defined by fdt_first_region().
*
* The algorithm is documented in the code - disp->invert is 0 for normal
* operation, and 1 to invert the sense of all matches.
*
- * See
+ * @priv: Private pointer as passed to fdtgrep_find_regions()
+ * @fdt: Pointer to FDT blob
+ * @offset: Offset of this node / property
+ * @type: Type of this part, FDT_IS_...
+ * @data: Pointer to data (node name, property name, compatible string)
+ * @size: Size of data, or 0 if none
+ * Return: 0 to exclude, 1 to include, -1 if no information is available
*/
static int h_include(void *priv, const void *fdt, int offset, int type,
const char *data, int size)
@@ -610,31 +662,13 @@ static int h_include(void *priv, const void *fdt, int offset, int type,
(disp->types_inc & FDT_NODE_HAS_PROP)) {
debug(" - checking node '%s'\n",
fdt_get_name(fdt, offset, NULL));
- for (offset = fdt_first_property_offset(fdt, offset);
- offset > 0 && inc != 1;
- offset = fdt_next_property_offset(fdt, offset)) {
- const struct fdt_property *prop;
- const char *str;
-
- prop = fdt_get_property_by_offset(fdt, offset, NULL);
- if (!prop)
- continue;
- str = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
- inc = check_type_include(priv, FDT_NODE_HAS_PROP, str,
- strlen(str));
- }
+ inc = check_props(disp, fdt, offset, inc);
if (inc == -1)
inc = 0;
}
- switch (inc) {
- case 1:
- inc = !disp->invert;
- break;
- case 0:
- inc = disp->invert;
- break;
- }
+ if (inc != -1 && disp->invert)
+ inc = !inc;
debug(" - returning %d\n", inc);
return inc;
@@ -683,10 +717,10 @@ static int fdtgrep_find_regions(const void *fdt,
return new_count;
} else if (new_count <= max_regions) {
/*
- * The alias regions will now be at the end of the list.
- * Sort the regions by offset to get things into the
- * right order
- */
+ * The alias regions will now be at the end of the list.
+ * Sort the regions by offset to get things into the
+ * right order
+ */
count = new_count;
qsort(region, count, sizeof(struct fdt_region),
h_cmp_region);
@@ -821,7 +855,7 @@ static int do_fdtgrep(struct display_info *disp, const char *filename)
region, max_regions, path, sizeof(path),
disp->flags);
if (count < 0) {
- report_error("fdt_find_regions", count);
+ report_error("fdtgrep_find_regions", count);
free(region);
return -1;
}
@@ -880,7 +914,7 @@ static int do_fdtgrep(struct display_info *disp, const char *filename)
size = fdt_totalsize(fdt);
}
- if (size != fwrite(fdt, 1, size, disp->fout)) {
+ if ((size_t)size != fwrite(fdt, 1, size, disp->fout)) {
fprintf(stderr, "Write failure, %d bytes\n", size);
free(fdt);
ret = 1;
@@ -932,9 +966,9 @@ static const char usage_synopsis[] =
case '?': usage("unknown option");
static const char usage_short_opts[] =
- "haAc:b:C:defg:G:HIlLmn:N:o:O:p:P:rRsStTv"
+ "haAc:b:C:defg:G:HIlLmn:N:o:O:p:P:rRsStTuv"
USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
+static const struct option usage_long_opts[] = {
{"show-address", no_argument, NULL, 'a'},
{"colour", no_argument, NULL, 'A'},
{"include-node-with-prop", a_argument, NULL, 'b'},
@@ -952,6 +986,8 @@ static struct option const usage_long_opts[] = {
{"include-mem", no_argument, NULL, 'm'},
{"include-node", a_argument, NULL, 'n'},
{"exclude-node", a_argument, NULL, 'N'},
+ {"out", a_argument, NULL, 'o'},
+ {"out-format", a_argument, NULL, 'O'},
{"include-prop", a_argument, NULL, 'p'},
{"exclude-prop", a_argument, NULL, 'P'},
{"remove-strings", no_argument, NULL, 'r'},
@@ -960,8 +996,7 @@ static struct option const usage_long_opts[] = {
{"skip-supernodes", no_argument, NULL, 'S'},
{"show-stringtab", no_argument, NULL, 't'},
{"show-aliases", no_argument, NULL, 'T'},
- {"out", a_argument, NULL, 'o'},
- {"out-format", a_argument, NULL, 'O'},
+ {"props-up-to-supernode", no_argument, NULL, 'u'},
{"invert-match", no_argument, NULL, 'v'},
USAGE_COMMON_LONG_OPTS,
};
@@ -983,6 +1018,8 @@ static const char * const usage_opts_help[] = {
"Include mem_rsvmap section in binary output",
"Node to include in grep",
"Node to exclude in grep",
+ "-o <output file>",
+ "-O <output format>",
"Property to include in grep",
"Property to exclude in grep",
"Remove unused strings from string table",
@@ -991,8 +1028,7 @@ static const char * const usage_opts_help[] = {
"Don't include supernodes of matching nodes",
"Include string table in binary output",
"Include matching aliases in output",
- "-o <output file>",
- "-O <output format>",
+ "Add -p properties to supernodes too",
"Invert the sense of matching (select non-matching lines)",
USAGE_COMMON_OPTS_HELP
};
@@ -1124,6 +1160,9 @@ static void scan_args(struct display_info *disp, int argc, char *argv[])
case 'H':
disp->header = 1;
break;
+ case 'I':
+ disp->show_dts_version = 1;
+ break;
case 'l':
disp->region_list = 1;
break;
@@ -1176,12 +1215,12 @@ static void scan_args(struct display_info *disp, int argc, char *argv[])
case 'T':
disp->add_aliases = 1;
break;
+ case 'u':
+ disp->props_up = 1;
+ break;
case 'v':
disp->invert = 1;
break;
- case 'I':
- disp->show_dts_version = 1;
- break;
}
if (type && value_add(disp, &disp->value_head, type, inc,
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-30 04:40:38 +0000