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-rw-r--r--scripts/dtc/util.c141
1 files changed, 129 insertions, 12 deletions
diff --git a/scripts/dtc/util.c b/scripts/dtc/util.c
index 2422c34e11df..3055c16e980d 100644
--- a/scripts/dtc/util.c
+++ b/scripts/dtc/util.c
@@ -34,6 +34,7 @@
#include "libfdt.h"
#include "util.h"
+#include "version_gen.h"
char *xstrdup(const char *s)
{
@@ -72,7 +73,7 @@ char *join_path(const char *path, const char *name)
int util_is_printable_string(const void *data, int len)
{
const char *s = data;
- const char *ss;
+ const char *ss, *se;
/* zero length is not */
if (len == 0)
@@ -82,13 +83,19 @@ int util_is_printable_string(const void *data, int len)
if (s[len - 1] != '\0')
return 0;
- ss = s;
- while (*s && isprint(*s))
- s++;
+ se = s + len;
- /* not zero, or not done yet */
- if (*s != '\0' || (s + 1 - ss) < len)
- return 0;
+ while (s < se) {
+ ss = s;
+ while (s < se && *s && isprint(*s))
+ s++;
+
+ /* not zero, or not done yet */
+ if (*s != '\0' || s == ss)
+ return 0;
+
+ s++;
+ }
return 1;
}
@@ -191,7 +198,7 @@ char get_escape_char(const char *s, int *i)
return val;
}
-int utilfdt_read_err(const char *filename, char **buffp)
+int utilfdt_read_err_len(const char *filename, char **buffp, off_t *len)
{
int fd = 0; /* assume stdin */
char *buf = NULL;
@@ -206,12 +213,12 @@ int utilfdt_read_err(const char *filename, char **buffp)
}
/* Loop until we have read everything */
- buf = malloc(bufsize);
+ buf = xmalloc(bufsize);
do {
/* Expand the buffer to hold the next chunk */
if (offset == bufsize) {
bufsize *= 2;
- buf = realloc(buf, bufsize);
+ buf = xrealloc(buf, bufsize);
if (!buf) {
ret = ENOMEM;
break;
@@ -232,13 +239,20 @@ int utilfdt_read_err(const char *filename, char **buffp)
free(buf);
else
*buffp = buf;
+ *len = bufsize;
return ret;
}
-char *utilfdt_read(const char *filename)
+int utilfdt_read_err(const char *filename, char **buffp)
+{
+ off_t len;
+ return utilfdt_read_err_len(filename, buffp, &len);
+}
+
+char *utilfdt_read_len(const char *filename, off_t *len)
{
char *buff;
- int ret = utilfdt_read_err(filename, &buff);
+ int ret = utilfdt_read_err_len(filename, &buff, len);
if (ret) {
fprintf(stderr, "Couldn't open blob from '%s': %s\n", filename,
@@ -249,6 +263,12 @@ char *utilfdt_read(const char *filename)
return buff;
}
+char *utilfdt_read(const char *filename)
+{
+ off_t len;
+ return utilfdt_read_len(filename, &len);
+}
+
int utilfdt_write_err(const char *filename, const void *blob)
{
int fd = 1; /* assume stdout */
@@ -329,3 +349,100 @@ int utilfdt_decode_type(const char *fmt, int *type, int *size)
return -1;
return 0;
}
+
+void utilfdt_print_data(const char *data, int len)
+{
+ int i;
+ const char *p = data;
+ const char *s;
+
+ /* no data, don't print */
+ if (len == 0)
+ return;
+
+ if (util_is_printable_string(data, len)) {
+ printf(" = ");
+
+ s = data;
+ do {
+ printf("\"%s\"", s);
+ s += strlen(s) + 1;
+ if (s < data + len)
+ printf(", ");
+ } while (s < data + len);
+
+ } else if ((len % 4) == 0) {
+ const uint32_t *cell = (const uint32_t *)data;
+
+ printf(" = <");
+ for (i = 0; i < len; i += 4)
+ printf("0x%08x%s", fdt32_to_cpu(cell[i]),
+ i < (len - 4) ? " " : "");
+ printf(">");
+ } else {
+ printf(" = [");
+ for (i = 0; i < len; i++)
+ printf("%02x%s", *p++, i < len - 1 ? " " : "");
+ printf("]");
+ }
+}
+
+void util_version(void)
+{
+ printf("Version: %s\n", DTC_VERSION);
+ exit(0);
+}
+
+void util_usage(const char *errmsg, const char *synopsis,
+ const char *short_opts, struct option const long_opts[],
+ const char * const opts_help[])
+{
+ FILE *fp = errmsg ? stderr : stdout;
+ const char a_arg[] = "<arg>";
+ size_t a_arg_len = strlen(a_arg) + 1;
+ size_t i;
+ int optlen;
+
+ fprintf(fp,
+ "Usage: %s\n"
+ "\n"
+ "Options: -[%s]\n", synopsis, short_opts);
+
+ /* prescan the --long opt length to auto-align */
+ optlen = 0;
+ for (i = 0; long_opts[i].name; ++i) {
+ /* +1 is for space between --opt and help text */
+ int l = strlen(long_opts[i].name) + 1;
+ if (long_opts[i].has_arg == a_argument)
+ l += a_arg_len;
+ if (optlen < l)
+ optlen = l;
+ }
+
+ for (i = 0; long_opts[i].name; ++i) {
+ /* helps when adding new applets or options */
+ assert(opts_help[i] != NULL);
+
+ /* first output the short flag if it has one */
+ if (long_opts[i].val > '~')
+ fprintf(fp, " ");
+ else
+ fprintf(fp, " -%c, ", long_opts[i].val);
+
+ /* then the long flag */
+ if (long_opts[i].has_arg == no_argument)
+ fprintf(fp, "--%-*s", optlen, long_opts[i].name);
+ else
+ fprintf(fp, "--%s %s%*s", long_opts[i].name, a_arg,
+ (int)(optlen - strlen(long_opts[i].name) - a_arg_len), "");
+
+ /* finally the help text */
+ fprintf(fp, "%s\n", opts_help[i]);
+ }
+
+ if (errmsg) {
+ fprintf(fp, "\nError: %s\n", errmsg);
+ exit(EXIT_FAILURE);
+ } else
+ exit(EXIT_SUCCESS);
+}