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Diffstat (limited to 'rbutil/mkamsboot/mkamsboot.c')
-rw-r--r--rbutil/mkamsboot/mkamsboot.c102
1 files changed, 88 insertions, 14 deletions
diff --git a/rbutil/mkamsboot/mkamsboot.c b/rbutil/mkamsboot/mkamsboot.c
index e4b6e09782..5733db5f2a 100644
--- a/rbutil/mkamsboot/mkamsboot.c
+++ b/rbutil/mkamsboot/mkamsboot.c
@@ -87,6 +87,8 @@ execution to the uncompressed firmware.
/* Headers for ARM code binaries */
#include "uclimg.h"
+#include "md5.h"
+
#include "bootimg_clip.h"
#include "bootimg_e200v2.h"
#include "bootimg_m200v2.h"
@@ -165,6 +167,39 @@ static const int rb_model_num[] =
0
};
+struct md5sums {
+ int model;
+ char *version;
+ int fw_version;
+ char *md5;
+};
+
+/* Checksums of unmodified original firmwares - for safety, and device
+ detection */
+static struct md5sums sansasums[] = {
+ /* NOTE: Different regional versions of the firmware normally only
+ differ in the filename - the md5sums are identical */
+ { MODEL_E200, "3.01.11", 1, "e622ca8cb6df423f54b8b39628a1f0a3" },
+ { MODEL_E200, "3.01.14", 1, "2c1d0383fc3584b2cc83ba8cc2243af6" },
+ { MODEL_E200, "3.01.16", 1, "12563ad71b25a1034cf2092d1e0218c4" },
+
+ { MODEL_FUZE, "1.01.11", 1, "cac8ffa03c599330ac02c4d41de66166" },
+ { MODEL_FUZE, "1.01.15", 1, "df0e2c1612727f722c19a3c764cff7f2" },
+
+ { MODEL_C200, "3.02.05", 1, "b6378ebd720b0ade3fad4dc7ab61c1a5" },
+
+ { MODEL_M200, "4.00.45", 1, "82e3194310d1514e3bbcd06e84c4add3" },
+ { MODEL_M200, "4.01.08-A", 1, "fc9dd6116001b3e6a150b898f1b091f0" },
+ { MODEL_M200, "4.01.08-E", 1, "d3fb7d8ec8624ee65bc99f8dab0e2369" },
+
+ { MODEL_CLIP, "1.01.17", 1, "12caad785d506219d73f538772afd99e" },
+ { MODEL_CLIP, "1.01.18", 1, "d720b266bd5afa38a198986ef0508a45" },
+ { MODEL_CLIP, "1.01.20", 1, "236d8f75189f468462c03f6d292cf2ac" },
+ { MODEL_CLIP, "1.01.29", 1, "b07fe36b338241944c241de21fb1e490" },
+ { MODEL_CLIP, "1.01.30", 1, "f2974d47c536549c9d8259170f1dbe4d" },
+};
+
+#define NUM_MD5S (sizeof(sansasums)/sizeof(sansasums[0]))
static off_t filesize(int fd) {
struct stat buf;
@@ -195,6 +230,21 @@ static void put_uint32le(unsigned char* p, uint32_t x)
p[3] = (x >> 24) & 0xff;
}
+void calc_MD5(unsigned char* buf, int len, char *md5str)
+{
+ int i;
+ md5_context ctx;
+ unsigned char md5sum[16];
+
+ md5_starts(&ctx);
+ md5_update(&ctx, buf, len);
+ md5_finish(&ctx, md5sum);
+
+ for (i = 0; i < 16; ++i)
+ sprintf(md5str + 2*i, "%02x", md5sum[i]);
+}
+
+
static uint32_t calc_checksum(unsigned char* buf, uint32_t n)
{
uint32_t sum = 0;
@@ -375,6 +425,7 @@ int main(int argc, char* argv[])
int totalsize;
unsigned char* p;
uint32_t checksum;
+ char md5sum[33]; /* 32 hex digits, plus terminating zero */
fprintf(stderr,"mkamsboot v" VERSION " - (C) Dave Chapman and Rafaël Carré 2008\n");
fprintf(stderr,"This is free software; see the source for copying conditions. There is NO\n");
@@ -397,26 +448,48 @@ int main(int argc, char* argv[])
return 1;
}
- /* TODO: Do some more sanity checks on the OF image. Some images (like m200v2) dont have a checksum at the end, only padding (0xdeadbeef). */
- checksum = get_uint32le(buf + len - 4);
- if (checksum != 0xefbeadde && checksum != calc_checksum(buf, len - 4)) {
+ /* Calculate MD5 checksum of OF */
+ calc_MD5(buf, len, md5sum);
- fprintf(stderr,"[ERR] Whole file checksum failed - %s\n",infile);
- return 1;
- }
+ fprintf(stderr,"[INFO] MD5 sum - %s\n",md5sum);
+
+ i = 0;
+ while ((i < NUM_MD5S) && (strcmp(sansasums[i].md5, md5sum) != 0))
+ i++;
- if (get_uint32le(&buf[0x204])==0x0000f000) {
- fw_version = 2;
- model_id = buf[0x219];
+ if (i < NUM_MD5S) {
+ model = sansasums[i].model;
+ fw_version = sansasums[i].fw_version;
+ fprintf(stderr,"[INFO] Original firmware MD5 checksum match - %s %s\n",
+ model_names[model], sansasums[i].version);
} else {
- fw_version = 1;
- model_id = buf[0x215];
+ fprintf(stderr,"[WARN] ****** Original firmware unknown ******\n");
+
+ if (get_uint32le(&buf[0x204])==0x0000f000) {
+ fw_version = 2;
+ model_id = buf[0x219];
+ } else {
+ fw_version = 1;
+ model_id = buf[0x215];
+ }
+
+ model = get_model(model_id);
+
+ if (model == MODEL_UNKNOWN) {
+ fprintf(stderr,"[ERR] Unknown firmware - model id 0x%02x\n",
+ model_id);
+ free(buf);
+ return 1;
+ }
}
+
- model = get_model(model_id);
+ /* TODO: Do some more sanity checks on the OF image. Some images (like m200v2) dont have a checksum at the end, only padding (0xdeadbeef). */
+ checksum = get_uint32le(buf + len - 4);
+ if (checksum != 0xefbeadde && checksum != calc_checksum(buf, len - 4)) {
- if (model == MODEL_UNKNOWN) {
- fprintf(stderr,"[ERR] Unknown firmware - model id 0x%02x\n",model_id);
+ fprintf(stderr,"[ERR] Whole file checksum failed - %s\n",infile);
+ free(buf);
return 1;
}
@@ -430,6 +503,7 @@ int main(int argc, char* argv[])
rb_unpacked = load_rockbox_file(bootfile, model, &bootloader_size);
if (rb_unpacked == NULL) {
fprintf(stderr,"[ERR] Could not load %s\n",bootfile);
+ free(buf);
return 1;
}