diff -drupN a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c
--- a/scripts/dtc/dtc.c 2018-08-06 17:23:04.000000000 +0300
+++ b/scripts/dtc/dtc.c 2022-06-12 05:28:14.000000000 +0300
@@ -22,6 +22,7 @@
#include "dtc.h"
#include "srcpos.h"
+#include "updatetree.h"
/*
* Command line options
@@ -30,7 +31,17 @@ int quiet; /* Level of quietness */
int reservenum; /* Number of memory reservation slots */
int minsize; /* Minimum blob size */
int padsize; /* Additional padding to blob */
+int alignsize; /* Additional padding to blob accroding to the alignsize */
int phandle_format = PHANDLE_BOTH; /* Use linux,phandle or phandle properties */
+int generate_symbols; /* enable symbols & fixup support */
+int generate_fixups; /* suppress generation of fixups on symbol support */
+int auto_label_aliases; /* auto generate labels -> aliases */
+
+static int is_power_of_2(int x)
+{
+ return (x > 0) && ((x & (x - 1)) == 0);
+}
+
static void fill_fullpaths(struct node *tree, const char *prefix)
{
@@ -53,7 +64,7 @@ static void fill_fullpaths(struct node *
#define FDT_VERSION(version) _FDT_VERSION(version)
#define _FDT_VERSION(version) #version
static const char usage_synopsis[] = "dtc [options] ";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:F:@hv";
static struct option const usage_long_opts[] = {
{"quiet", no_argument, NULL, 'q'},
{"in-format", a_argument, NULL, 'I'},
@@ -64,6 +75,7 @@ static struct option const usage_long_op
{"reserve", a_argument, NULL, 'R'},
{"space", a_argument, NULL, 'S'},
{"pad", a_argument, NULL, 'p'},
+ {"align", a_argument, NULL, 'a'},
{"boot-cpu", a_argument, NULL, 'b'},
{"force", no_argument, NULL, 'f'},
{"include", a_argument, NULL, 'i'},
@@ -71,6 +83,9 @@ static struct option const usage_long_op
{"phandle", a_argument, NULL, 'H'},
{"warning", a_argument, NULL, 'W'},
{"error", a_argument, NULL, 'E'},
+ {"symbols", no_argument, NULL, '@'},
+ {"auto-alias", no_argument, NULL, 'A'},
+ {"fexname", a_argument, NULL, 'F'},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{NULL, no_argument, NULL, 0x0},
@@ -91,6 +106,7 @@ static const char * const usage_opts_hel
"\n\tMake space for reserve map entries (for dtb and asm output)",
"\n\tMake the blob at least long (extra space)",
"\n\tAdd padding to the blob of long (extra space)",
+ "\n\tMake the blob align to the (extra space)",
"\n\tSet the physical boot cpu",
"\n\tTry to produce output even if the input tree has errors",
"\n\tAdd a path to search for include files",
@@ -101,6 +117,8 @@ static const char * const usage_opts_hel
"\t\tboth - Both \"linux,phandle\" and \"phandle\" properties",
"\n\tEnable/disable warnings (prefix with \"no-\")",
"\n\tEnable/disable errors (prefix with \"no-\")",
+ "\n\tEnable generation of symbols",
+ "\n\tEnable auto-alias of labels",
"\n\tPrint this help and exit",
"\n\tPrint version and exit",
NULL,
@@ -153,11 +171,12 @@ static const char *guess_input_format(co
int main(int argc, char *argv[])
{
- struct boot_info *bi;
+ struct dt_info *dti;
const char *inform = NULL;
const char *outform = NULL;
const char *outname = "-";
const char *depname = NULL;
+ const char *fexname = NULL;
bool force = false, sort = false;
const char *arg;
int opt;
@@ -169,6 +188,7 @@ int main(int argc, char *argv[])
reservenum = 0;
minsize = 0;
padsize = 0;
+ alignsize = 0;
while ((opt = util_getopt_long()) != EOF) {
switch (opt) {
@@ -196,6 +216,12 @@ int main(int argc, char *argv[])
case 'p':
padsize = strtol(optarg, NULL, 0);
break;
+ case 'a':
+ alignsize = strtol(optarg, NULL, 0);
+ if (!is_power_of_2(alignsize))
+ die("Invalid argument \"%d\" to -a option\n",
+ optarg);
+ break;
case 'f':
force = true;
break;
@@ -233,6 +259,17 @@ int main(int argc, char *argv[])
case 'E':
parse_checks_option(false, true, optarg);
break;
+ case '@':
+ generate_symbols = 1;
+ break;
+
+ case 'A':
+ auto_label_aliases = 1;
+ break;
+
+ case 'F':
+ fexname = optarg;
+ break;
case 'h':
usage(NULL);
@@ -272,11 +309,11 @@ int main(int argc, char *argv[])
}
}
if (streq(inform, "dts"))
- bi = dt_from_source(arg);
+ dti = dt_from_source(arg);
else if (streq(inform, "fs"))
- bi = dt_from_fs(arg);
+ dti = dt_from_fs(arg);
else if(streq(inform, "dtb"))
- bi = dt_from_blob(arg);
+ dti = dt_from_blob(arg);
else
die("Unknown input format \"%s\"\n", inform);
@@ -286,13 +323,28 @@ int main(int argc, char *argv[])
}
if (cmdline_boot_cpuid != -1)
- bi->boot_cpuid_phys = cmdline_boot_cpuid;
+ dti->boot_cpuid_phys = cmdline_boot_cpuid;
- fill_fullpaths(bi->dt, "");
- process_checks(force, bi);
+ fill_fullpaths(dti->dt, "");
+ process_checks(force, dti);
+
+ /* on a plugin, generate by default */
+ if (dti->dtsflags & DTSF_PLUGIN)
+ generate_fixups = 1;
+
+ if (auto_label_aliases)
+ generate_label_tree(dti, "aliases", false);
+
+ if (generate_symbols)
+ generate_label_tree(dti, "__symbols__", true);
+
+ if (generate_fixups) {
+ generate_fixups_tree(dti, "__fixups__");
+ generate_local_fixups_tree(dti, "__local_fixups__");
+ }
if (sort)
- sort_tree(bi);
+ sort_tree(dti);
if (streq(outname, "-")) {
outf = stdout;
@@ -303,12 +355,24 @@ int main(int argc, char *argv[])
outname, strerror(errno));
}
+ /* add by huangshr.
+ * here we parser script file and
+ * insert mainkey info into bi struct.
+ */
+ if (fexname) {
+ dt_update_source(fexname, outf, dti);
+ /* recheck bi struct */
+ fill_fullpaths(dti->dt, "");
+ dirty_checks();
+ process_checks(force, dti);
+ }
+
if (streq(outform, "dts")) {
- dt_to_source(outf, bi);
+ dt_to_source(outf, dti);
} else if (streq(outform, "dtb")) {
- dt_to_blob(outf, bi, outversion);
+ dt_to_blob(outf, dti, outversion);
} else if (streq(outform, "asm")) {
- dt_to_asm(outf, bi, outversion);
+ dt_to_asm(outf, dti, outversion);
} else if (streq(outform, "null")) {
/* do nothing */
} else {