This commit adds the possibility to add build information for a DTB. Build information can be: build date, DTS version, "who built the DTB" (same kind of information that we get in Linux with the Linux banner). To do this, an extra option "-B" using an information file as argument has been added. If this option is used, input device tree is appended with a new string property "Build-info". This property is built with information found in information file given as argument. This file has to be generated by user and shouldn't exceed 256 bytes. Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxx> diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c index bdb3f5945699..294828bac20b 100644 --- a/scripts/dtc/dtc.c +++ b/scripts/dtc/dtc.c @@ -18,6 +18,7 @@ int padsize; /* Additional padding to blob */ int alignsize; /* Additional padding to blob accroding to the alignsize */ int phandle_format = PHANDLE_EPAPR; /* Use linux,phandle or phandle properties */ int generate_symbols; /* enable symbols & fixup support */ +int generate_build_info; /* Add build information: time, source version ... */ int generate_fixups; /* suppress generation of fixups on symbol support */ int auto_label_aliases; /* auto generate labels -> aliases */ int annotate; /* Level of annotation: 1 for input source location @@ -45,9 +46,42 @@ static void fill_fullpaths(struct node *tree, const char *prefix) fill_fullpaths(child, tree->fullpath); } +static void fill_build_info(struct node *tree, const char *fname) +{ + struct data d = empty_data; + char *tmp; + FILE *f; + int len; + + tmp = xmalloc(sizeof(char) * 256); + + f = fopen(fname, "r"); + if (!f) { + printf("Can't open file %s\n", fname); + return; + } + + len = fread(tmp, sizeof(char), 256, f); + if (!len) { + printf("Can't read file %s\n", fname); + fclose(f); + free(tmp); + } + fclose(f); + + tmp[len - 1] = '\0'; + + d = data_add_marker(d, TYPE_STRING, tmp); + d = data_append_data(d, tmp, len); + + add_property(tree, build_property("Build-info", d, NULL)); + + free(tmp); +} + /* Usage related data. */ static const char usage_synopsis[] = "dtc [options] <input file>"; -static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@AThv"; +static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@AT:B:hv"; static struct option const usage_long_opts[] = { {"quiet", no_argument, NULL, 'q'}, {"in-format", a_argument, NULL, 'I'}, @@ -69,6 +103,7 @@ static struct option const usage_long_opts[] = { {"symbols", no_argument, NULL, '@'}, {"auto-alias", no_argument, NULL, 'A'}, {"annotate", no_argument, NULL, 'T'}, + {"build-info", a_argument, NULL, 'B'}, {"help", no_argument, NULL, 'h'}, {"version", no_argument, NULL, 'v'}, {NULL, no_argument, NULL, 0x0}, @@ -106,6 +141,7 @@ static const char * const usage_opts_help[] = { "\n\tEnable generation of symbols", "\n\tEnable auto-alias of labels", "\n\tAnnotate output .dts with input source file and line (-T -T for more details)", + "\n\tAdd build information (date, version, ...) in the blob", "\n\tPrint this help and exit", "\n\tPrint version and exit", NULL, @@ -164,6 +200,7 @@ int main(int argc, char *argv[]) const char *outform = NULL; const char *outname = "-"; const char *depname = NULL; + const char *version = NULL; bool force = false, sort = false; const char *arg; int opt; @@ -256,9 +293,12 @@ int main(int argc, char *argv[]) case 'T': annotate++; break; - case 'h': usage(NULL); + case 'B': + version = optarg; + generate_build_info = 1; + break; default: usage("unknown option"); } @@ -296,14 +336,17 @@ int main(int argc, char *argv[]) } if (annotate && (!streq(inform, "dts") || !streq(outform, "dts"))) die("--annotate requires -I dts -O dts\n"); - if (streq(inform, "dts")) + if (streq(inform, "dts")) { dti = dt_from_source(arg); - else if (streq(inform, "fs")) + if (generate_build_info) + fill_build_info(dti->dt, version); + } else if (streq(inform, "fs")) { dti = dt_from_fs(arg); - else if(streq(inform, "dtb")) + } else if (streq(inform, "dtb")) { dti = dt_from_blob(arg); - else + } else { die("Unknown input format \"%s\"\n", inform); + } dti->outname = outname; -- 2.17.1