* @imagename: Image name(passed by "mkimage -n")
* @spl_hdr: Boot ROM requires a 4-bytes spl header
* @spl_size: Spl size(include extra 4-bytes spl header)
+ * @spl_rc4: RC4 encode the SPL binary (same key as header)
*/
struct spl_info {
const char *imagename;
const char *spl_hdr;
const uint32_t spl_size;
+ const bool spl_rc4;
};
static struct spl_info spl_infos[] = {
- { "rk3036", "RK30", 0x1000 },
- { "rk3288", "RK32", 0x8000 },
- { "rk3399", "RK33", 0x20000 },
+ { "rk3036", "RK30", 0x1000, false },
+ { "rk3288", "RK32", 0x8000, false },
+ { "rk3399", "RK33", 0x20000, false },
};
static unsigned char rc4_key[16] = {
return info->spl_size;
}
+bool rkcommon_need_rc4_spl(struct image_tool_params *params)
+{
+ struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+ /*
+ * info would not be NULL, because of we checked params before.
+ */
+ return info->spl_rc4;
+}
+
int rkcommon_set_header(void *buf, uint file_size,
struct image_tool_params *params)
{
memset(buf, '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
hdr = (struct header0_info *)buf;
hdr->signature = RK_SIGNATURE;
- hdr->disable_rc4 = 1;
+ hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
hdr->init_offset = RK_INIT_OFFSET;
hdr->init_size = (file_size + RK_BLK_SIZE - 1) / RK_BLK_SIZE;
return 0;
}
+
+void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
+{
+ unsigned int remaining = size;
+
+ while (remaining > 0) {
+ int step = (remaining > RK_BLK_SIZE) ? RK_BLK_SIZE : remaining;
+
+ rc4_encode(buf + offset, step, rc4_key);
+ offset += RK_BLK_SIZE;
+ remaining -= step;
+ }
+}