1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2008 Semihalf
5 * Written by: Rafal Czubak <rcz@semihalf.com>
6 * Bartlomiej Sieka <tur@semihalf.com>
11 #if !(defined(CONFIG_FIT) && defined(CONFIG_OF_LIBFDT))
12 #error "CONFIG_FIT and CONFIG_OF_LIBFDT are required for auto-update feature"
15 #if defined(CONFIG_UPDATE_TFTP) && !defined(CONFIG_MTD_NOR_FLASH)
16 #error "CONFIG_UPDATE_TFTP and !CONFIG_MTD_NOR_FLASH needed for legacy behaviour"
27 #include <mtd/cfi_flash.h>
29 /* env variable holding the location of the update file */
30 #define UPDATE_FILE_ENV "updatefile"
32 /* set configuration defaults if needed */
33 #ifndef CONFIG_UPDATE_LOAD_ADDR
34 #define CONFIG_UPDATE_LOAD_ADDR 0x100000
37 #ifndef CONFIG_UPDATE_TFTP_MSEC_MAX
38 #define CONFIG_UPDATE_TFTP_MSEC_MAX 100
41 #ifndef CONFIG_UPDATE_TFTP_CNT_MAX
42 #define CONFIG_UPDATE_TFTP_CNT_MAX 0
45 extern ulong tftp_timeout_ms;
46 extern int tftp_timeout_count_max;
47 extern ulong load_addr;
48 #ifdef CONFIG_MTD_NOR_FLASH
49 extern flash_info_t flash_info[];
50 static uchar *saved_prot_info;
52 static int update_load(char *filename, ulong msec_max, int cnt_max, ulong addr)
55 ulong saved_timeout_msecs;
56 int saved_timeout_count;
57 char *saved_netretry, *saved_bootfile;
60 /* save used globals and env variable */
61 saved_timeout_msecs = tftp_timeout_ms;
62 saved_timeout_count = tftp_timeout_count_max;
63 saved_netretry = strdup(env_get("netretry"));
64 saved_bootfile = strdup(net_boot_file_name);
66 /* set timeouts for auto-update */
67 tftp_timeout_ms = msec_max;
68 tftp_timeout_count_max = cnt_max;
70 /* we don't want to retry the connection if errors occur */
71 env_set("netretry", "no");
73 /* download the update file */
75 copy_filename(net_boot_file_name, filename, sizeof(net_boot_file_name));
76 size = net_loop(TFTPGET);
81 flush_cache(addr, size);
83 /* restore changed globals and env variable */
84 tftp_timeout_ms = saved_timeout_msecs;
85 tftp_timeout_count_max = saved_timeout_count;
87 env_set("netretry", saved_netretry);
88 if (saved_netretry != NULL)
91 if (saved_bootfile != NULL) {
92 copy_filename(net_boot_file_name, saved_bootfile,
93 sizeof(net_boot_file_name));
100 #ifdef CONFIG_MTD_NOR_FLASH
101 static int update_flash_protect(int prot, ulong addr_first, ulong addr_last)
112 calloc(CONFIG_SYS_MAX_FLASH_BANKS * CONFIG_SYS_MAX_FLASH_SECT, 1);
113 if (!saved_prot_info)
117 for (bank = 0; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
119 info = &flash_info[bank];
121 /* Nothing to do if the bank doesn't exist */
122 if (info->sector_count == 0)
125 /* Point to current bank protection information */
126 sp_info_ptr = saved_prot_info + (bank * CONFIG_SYS_MAX_FLASH_SECT);
129 * Adjust addr_first or addr_last if we are on bank boundary.
130 * Address space between banks must be continuous for other
131 * flash functions (like flash_sect_erase or flash_write) to
132 * succeed. Banks must also be numbered in correct order,
133 * according to increasing addresses.
135 if (addr_last > info->start[0] + info->size - 1)
136 addr_last = info->start[0] + info->size - 1;
137 if (addr_first < info->start[0])
138 addr_first = info->start[0];
140 for (i = 0; i < info->sector_count; i++) {
141 /* Save current information about protected sectors */
144 if ((s >= addr_first) && (s <= addr_last))
145 sp_info_ptr[i] = info->protect[i];
149 /* Protect/unprotect sectors */
150 if (sp_info_ptr[i] == 1) {
151 #if defined(CONFIG_SYS_FLASH_PROTECTION)
152 if (flash_real_protect(info, i, prot))
155 info->protect[i] = prot;
162 printf("%sProtected %d sectors\n",
163 prot ? "": "Un-", cnt);
167 if((prot == 1) && saved_prot_info)
168 free(saved_prot_info);
174 static int update_flash(ulong addr_source, ulong addr_first, ulong size)
176 #ifdef CONFIG_MTD_NOR_FLASH
177 ulong addr_last = addr_first + size - 1;
179 /* round last address to the sector boundary */
180 if (flash_sect_roundb(&addr_last) > 0)
183 if (addr_first >= addr_last) {
184 printf("Error: end address exceeds addressing space\n");
188 /* remove protection on processed sectors */
189 if (update_flash_protect(0, addr_first, addr_last) > 0) {
190 printf("Error: could not unprotect flash sectors\n");
194 printf("Erasing 0x%08lx - 0x%08lx", addr_first, addr_last);
195 if (flash_sect_erase(addr_first, addr_last) > 0) {
196 printf("Error: could not erase flash\n");
200 printf("Copying to flash...");
201 if (flash_write((char *)addr_source, addr_first, size) > 0) {
202 printf("Error: could not copy to flash\n");
207 /* enable protection on processed sectors */
208 if (update_flash_protect(1, addr_first, addr_last) > 0) {
209 printf("Error: could not protect flash sectors\n");
216 static int update_fit_getparams(const void *fit, int noffset, ulong *addr,
217 ulong *fladdr, ulong *size)
221 if (fit_image_get_data(fit, noffset, &data, (size_t *)size))
224 if (fit_image_get_load(fit, noffset, (ulong *)fladdr))
232 int update_tftp(ulong addr, char *interface, char *devstring)
234 char *filename, *env_addr, *fit_image_name;
235 ulong update_addr, update_fladdr, update_size;
236 int images_noffset, ndepth, noffset;
237 bool update_tftp_dfu;
241 if (interface == NULL && devstring == NULL) {
242 update_tftp_dfu = false;
243 } else if (interface && devstring) {
244 update_tftp_dfu = true;
246 pr_err("Interface: %s and devstring: %s not supported!\n",
247 interface, devstring);
251 /* use already present image */
253 goto got_update_file;
255 printf("Auto-update from TFTP: ");
257 /* get the file name of the update file */
258 filename = env_get(UPDATE_FILE_ENV);
259 if (filename == NULL) {
260 printf("failed, env. variable '%s' not found\n",
265 printf("trying update file '%s'\n", filename);
267 /* get load address of downloaded update file */
268 env_addr = env_get("loadaddr");
270 addr = simple_strtoul(env_addr, NULL, 16);
272 addr = CONFIG_UPDATE_LOAD_ADDR;
275 if (update_load(filename, CONFIG_UPDATE_TFTP_MSEC_MAX,
276 CONFIG_UPDATE_TFTP_CNT_MAX, addr)) {
277 printf("Can't load update file, aborting auto-update\n");
284 if (!fit_check_format((void *)fit)) {
285 printf("Bad FIT format of the update file, aborting "
290 /* process updates */
291 images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
294 noffset = fdt_next_node(fit, images_noffset, &ndepth);
295 while (noffset >= 0 && ndepth > 0) {
299 fit_image_name = (char *)fit_get_name(fit, noffset, NULL);
300 printf("Processing update '%s' :", fit_image_name);
302 if (!fit_image_verify(fit, noffset)) {
303 printf("Error: invalid update hash, aborting\n");
309 if (update_fit_getparams(fit, noffset, &update_addr,
310 &update_fladdr, &update_size)) {
311 printf("Error: can't get update parameteres, "
317 if (!update_tftp_dfu) {
318 if (update_flash(update_addr, update_fladdr,
320 printf("Error: can't flash update, aborting\n");
324 } else if (fit_image_check_type(fit, noffset,
326 ret = dfu_tftp_write(fit_image_name, update_addr,
327 update_size, interface, devstring);
332 noffset = fdt_next_node(fit, noffset, &ndepth);