11 struct fis_image_hdr {
12 unsigned char name[16];
18 } __attribute__((packed));
20 struct fis_image_crc {
23 } __attribute__((packed));
25 struct fis_image_desc {
26 struct fis_image_hdr hdr;
27 char _pad[256 - sizeof(struct fis_image_hdr) - sizeof(struct fis_image_crc)];
28 struct fis_image_crc crc;
29 } __attribute__((packed));
31 static int fis_fd = -1;
32 static struct fis_image_desc *fis_desc;
33 static int fis_erasesize = 0;
39 munmap(fis_desc, fis_erasesize);
48 static struct fis_image_desc *
51 struct fis_image_desc *desc;
56 fis_fd = mtd_check_open("FIS directory");
61 fis_fd = mtd_open("FIS directory", true);
65 fis_erasesize = erasesize;
66 desc = mmap(NULL, erasesize, PROT_READ|PROT_WRITE, MAP_SHARED, fis_fd, 0);
67 if (desc == MAP_FAILED)
79 fis_validate(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
81 struct fis_image_desc *desc;
90 for (i = 0; i < n_new - 1; i++) {
92 fprintf(stderr, "FIS error: only the last partition can detect the size automatically\n");
99 end = (char *) end + fis_erasesize;
100 while ((void *) desc < end) {
101 if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff))
104 for (i = 0; i < n_old; i++) {
105 if (!strncmp((char *) desc->hdr.name, (char *) old[i].name, sizeof(desc->hdr.name))) {
126 fis_remap(struct fis_part *old, int n_old, struct fis_part *new, int n_new)
128 struct fis_image_desc *fisdir = NULL;
129 struct fis_image_desc *redboot = NULL;
130 struct fis_image_desc *first = NULL;
131 struct fis_image_desc *last = NULL;
132 struct fis_image_desc *desc;
133 struct fis_part *part;
134 uint32_t offset = 0, size = 0;
143 fprintf(stderr, "Updating FIS table... \n");
145 end = (char *) desc + fis_erasesize;
146 while ((char *) desc < end) {
147 if (!desc->hdr.name[0] || (desc->hdr.name[0] == 0xff))
150 if (!strcmp((char *) desc->hdr.name, "FIS directory"))
153 if (!strcmp((char *) desc->hdr.name, "RedBoot"))
156 for (i = 0; i < n_old; i++) {
157 if (!strncmp((char *) desc->hdr.name, (char *) old[i].name, sizeof(desc->hdr.name))) {
158 size += desc->hdr.size;
174 if (desc && (last->hdr.flash_base < desc->hdr.flash_base - last->hdr.size))
175 size += (desc->hdr.flash_base - last->hdr.flash_base) - last->hdr.size;
179 if (redboot && (desc >= redboot)) {
180 if (first->hdr.flash_base - desc->hdr.size > desc->hdr.flash_base) {
181 int delta = first->hdr.flash_base - desc->hdr.size - desc->hdr.flash_base;
190 desc = first + n_new;
191 offset = first->hdr.flash_base;
199 memmove(desc, last, end - tmp);
201 tmp = end - (last - desc) * sizeof(struct fis_image_desc);
202 memset(tmp, 0xff, tmp - end);
206 for (part = new, desc = first; desc < first + n_new; desc++, part++) {
207 memset(desc, 0, sizeof(struct fis_image_desc));
208 memcpy(desc->hdr.name, part->name, sizeof(desc->hdr.name));
212 desc->hdr.flash_base = offset;
213 desc->hdr.mem_base = part->loadaddr;
214 desc->hdr.entry_point = part->loadaddr;
215 desc->hdr.size = (part->size > 0) ? part->size : size;
216 desc->hdr.data_length = desc->hdr.size;
218 offset += desc->hdr.size;
219 size -= desc->hdr.size;
222 msync(fis_desc, fis_erasesize, MS_SYNC|MS_INVALIDATE);