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authorRafał Miłecki <rafal@milecki.pl>2021-04-08 23:49:43 +0200
committerRafał Miłecki <rafal@milecki.pl>2021-04-14 14:04:04 +0200
commit5eb3508ad21e111ecea8c44cb9c6c896ce7c71b3 (patch)
tree6db440fbe0faffe11f538138a2ac51b2a93c7513 /tools/firmware-utils
parent05a4273058303c8cfb5ff9c087739b924df056b3 (diff)
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firmware-utils: tplink-safeloader: support displaying fw info
Add "-i" option for reading & displaying firmware info. First it lists in-firmware partitions ("fwup-ptn"). Then it checks for human understandable partitions and prints data found in each of them. This new feature is meant for development & debug purposes. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'tools/firmware-utils')
-rw-r--r--tools/firmware-utils/src/tplink-safeloader.c131
1 files changed, 127 insertions, 4 deletions
diff --git a/tools/firmware-utils/src/tplink-safeloader.c b/tools/firmware-utils/src/tplink-safeloader.c
index ac71b3305e..b3d5c9151d 100644
--- a/tools/firmware-utils/src/tplink-safeloader.c
+++ b/tools/firmware-utils/src/tplink-safeloader.c
@@ -33,8 +33,10 @@
#include <assert.h>
+#include <ctype.h>
#include <errno.h>
#include <stdbool.h>
+#include <stddef.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
@@ -2877,6 +2879,8 @@ static void usage(const char *argv0) {
"Options:\n"
" -h show this help\n"
"\n"
+ "Info about an image:\n"
+ " -i <file> input file to read from\n"
"Create a new image:\n"
" -B <board> create image for the board specified with <board>\n"
" -k <file> read kernel image from the file <file>\n"
@@ -3141,10 +3145,123 @@ static struct flash_partition_entry *find_partition(
return entries;
}
- error(1, 0, "%s", error_msg);
+ if (error_msg) {
+ error(1, 0, "%s", error_msg);
+ }
+
return NULL;
}
+static int firmware_info(const char *input)
+{
+ struct flash_partition_entry pointers[MAX_PARTITIONS] = { };
+ struct flash_partition_entry *e;
+ FILE *fp;
+ int i;
+
+ fp = fopen(input, "r");
+
+ if (read_partition_table(fp, 0x1014, pointers, MAX_PARTITIONS, 0)) {
+ error(1, 0, "Error can not read the partition table (fwup-ptn)");
+ }
+
+ printf("Firmware image partitions:\n");
+ printf("%-8s %-8s %s\n", "base", "size", "name");
+ for (i = 0; i < MAX_PARTITIONS; i++) {
+ e = &pointers[i];
+
+ if (!e->name && !e->base && !e->size)
+ continue;
+
+ printf("%08x %08x %s\n", e->base, e->size, e->name ? e->name : "");
+ }
+
+ e = find_partition(pointers, MAX_PARTITIONS, "soft-version", NULL);
+ if (e) {
+ size_t data_len = e->size - sizeof(struct meta_header);
+ char *buf = malloc(data_len);
+ struct soft_version *s;
+ bool isstr;
+ int i;
+
+ if (!buf)
+ error(1, errno, "Failed to alloc buffer");
+
+ if (fseek(fp, 0x1014 + e->base + sizeof(struct meta_header), SEEK_SET))
+ error(1, errno, "Can not seek in the firmware");
+
+ if (fread(buf, data_len, 1, fp) != 1)
+ error(1, errno, "Can not read fwup-ptn data from the firmware");
+
+ /* Check for string ignoring padding character */
+ isstr = true;
+ for (i = 0; i < data_len - 1; i++) {
+ if (!isascii(buf[i])) {
+ isstr = false;
+ break;
+ }
+ }
+
+ printf("\n[Software version]\n");
+ if (isstr) {
+ fwrite(buf, data_len, 1, stdout);
+ putchar('\n');
+ } else if (data_len >= offsetof(struct soft_version, rev)) {
+ s = (struct soft_version *)buf;
+
+ printf("Version: %d.%d.%d\n", s->version_major, s->version_minor, s->version_patch);
+ printf("Date: %02x%02x-%02x-%02x\n", s->year_hi, s->year_lo, s->month, s->day);
+ } else {
+ printf("Failed to parse data\n");
+ }
+
+ free(buf);
+ }
+
+ e = find_partition(pointers, MAX_PARTITIONS, "support-list", NULL);
+ if (e) {
+ char buf[128];
+ size_t length;
+ size_t bytes;
+
+ if (fseek(fp, 0x1014 + e->base + sizeof(struct meta_header), SEEK_SET))
+ error(1, errno, "Can not seek in the firmware");
+
+ printf("\n[Support list]\n");
+ for (length = e->size - sizeof(struct meta_header); length; length -= bytes) {
+ bytes = fread(buf, 1, length > sizeof(buf) ? sizeof(buf) : length, fp);
+ if (bytes <= 0)
+ error(1, errno, "Can not read fwup-ptn data from the firmware");
+
+ puts(buf);
+ }
+ }
+
+ e = find_partition(pointers, MAX_PARTITIONS, "partition-table", NULL);
+ if (e) {
+ struct flash_partition_entry parts[MAX_PARTITIONS] = { };
+
+ if (read_partition_table(fp, 0x1014 + e->base + 4, parts, MAX_PARTITIONS, 1)) {
+ error(1, 0, "Error can not read the partition table (partition)");
+ }
+
+ printf("\n[Partition table]\n");
+ printf("%-8s %-8s %s\n", "base", "size", "name");
+ for (i = 0; i < MAX_PARTITIONS; i++) {
+ e = &parts[i];
+
+ if (!e->name && !e->base && !e->size)
+ continue;
+
+ printf("%08x %08x %s\n", e->base, e->size, e->name ? e->name : "");
+ }
+ }
+
+ fclose(fp);
+
+ return 0;
+}
+
static void write_ff(FILE *output_file, size_t size)
{
char buf[4096];
@@ -3224,7 +3341,7 @@ static void convert_firmware(const char *input, const char *output)
}
int main(int argc, char *argv[]) {
- const char *board = NULL, *kernel_image = NULL, *rootfs_image = NULL, *output = NULL;
+ const char *info_image = NULL, *board = NULL, *kernel_image = NULL, *rootfs_image = NULL, *output = NULL;
const char *extract_image = NULL, *output_directory = NULL, *convert_image = NULL;
bool add_jffs2_eof = false, sysupgrade = false;
unsigned rev = 0;
@@ -3234,11 +3351,15 @@ int main(int argc, char *argv[]) {
while (true) {
int c;
- c = getopt(argc, argv, "B:k:r:o:V:jSh:x:d:z:");
+ c = getopt(argc, argv, "i:B:k:r:o:V:jSh:x:d:z:");
if (c == -1)
break;
switch (c) {
+ case 'i':
+ info_image = optarg;
+ break;
+
case 'B':
board = optarg;
break;
@@ -3289,7 +3410,9 @@ int main(int argc, char *argv[]) {
}
}
- if (extract_image || output_directory) {
+ if (info_image) {
+ firmware_info(info_image);
+ } else if (extract_image || output_directory) {
if (!extract_image)
error(1, 0, "No factory/oem image given via -x <file>. Output directory is only valid with -x");
if (!output_directory)