dfu_sf.c 5.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222
  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
  4. */
  5. #include <common.h>
  6. #include <flash.h>
  7. #include <malloc.h>
  8. #include <errno.h>
  9. #include <div64.h>
  10. #include <dfu.h>
  11. #include <spi.h>
  12. #include <spi_flash.h>
  13. #include <jffs2/load_kernel.h>
  14. #include <linux/mtd/mtd.h>
  15. static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
  16. {
  17. *size = dfu->data.sf.size;
  18. return 0;
  19. }
  20. static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
  21. long *len)
  22. {
  23. return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
  24. *len, buf);
  25. }
  26. static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
  27. {
  28. return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
  29. dfu->data.sf.dev->sector_size;
  30. }
  31. static int dfu_write_medium_sf(struct dfu_entity *dfu,
  32. u64 offset, void *buf, long *len)
  33. {
  34. int ret;
  35. ret = spi_flash_erase(dfu->data.sf.dev,
  36. find_sector(dfu, dfu->data.sf.start, offset),
  37. dfu->data.sf.dev->sector_size);
  38. if (ret)
  39. return ret;
  40. ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
  41. *len, buf);
  42. if (ret)
  43. return ret;
  44. return 0;
  45. }
  46. static int dfu_flush_medium_sf(struct dfu_entity *dfu)
  47. {
  48. u64 off, length;
  49. if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
  50. return 0;
  51. /* in case of ubi partition, erase rest of the partition */
  52. off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
  53. /* last write ended with unaligned length jump to next */
  54. if (off != dfu->data.sf.start + dfu->offset)
  55. off += dfu->data.sf.dev->sector_size;
  56. length = dfu->data.sf.start + dfu->data.sf.size - off;
  57. if (length)
  58. return spi_flash_erase(dfu->data.sf.dev, off, length);
  59. return 0;
  60. }
  61. static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
  62. {
  63. /*
  64. * Currently, Poll Timeout != 0 is only needed on nand
  65. * ubi partition, as sectors which are not used need
  66. * to be erased
  67. */
  68. if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
  69. return DFU_MANIFEST_POLL_TIMEOUT;
  70. return DFU_DEFAULT_POLL_TIMEOUT;
  71. }
  72. static void dfu_free_entity_sf(struct dfu_entity *dfu)
  73. {
  74. /*
  75. * In the DM case it is not necessary to free the SPI device.
  76. * For the non-DM case we must ensure that the the SPI device is only
  77. * freed once.
  78. */
  79. if (!CONFIG_IS_ENABLED(DM_SPI_FLASH)) {
  80. struct spi_flash *dev = dfu->data.sf.dev;
  81. if (!dev)
  82. return;
  83. dfu->data.sf.dev = NULL;
  84. list_for_each_entry(dfu, &dfu_list, list) {
  85. if (dfu->data.sf.dev == dev)
  86. dfu->data.sf.dev = NULL;
  87. }
  88. spi_flash_free(dev);
  89. }
  90. }
  91. static struct spi_flash *parse_dev(char *devstr)
  92. {
  93. unsigned int bus;
  94. unsigned int cs;
  95. unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
  96. unsigned int mode = CONFIG_SF_DEFAULT_MODE;
  97. char *s, *endp;
  98. struct spi_flash *dev;
  99. s = strsep(&devstr, ":");
  100. if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
  101. printf("Invalid SPI bus %s\n", s);
  102. return NULL;
  103. }
  104. s = strsep(&devstr, ":");
  105. if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
  106. printf("Invalid SPI chip-select %s\n", s);
  107. return NULL;
  108. }
  109. s = strsep(&devstr, ":");
  110. if (s && *s) {
  111. speed = simple_strtoul(s, &endp, 0);
  112. if (*endp || !speed) {
  113. printf("Invalid SPI speed %s\n", s);
  114. return NULL;
  115. }
  116. }
  117. s = strsep(&devstr, ":");
  118. if (s && *s) {
  119. mode = simple_strtoul(s, &endp, 0);
  120. if (*endp || mode > 3) {
  121. printf("Invalid SPI mode %s\n", s);
  122. return NULL;
  123. }
  124. }
  125. dev = spi_flash_probe(bus, cs, speed, mode);
  126. if (!dev) {
  127. printf("Failed to create SPI flash at %u:%u:%u:%u\n",
  128. bus, cs, speed, mode);
  129. return NULL;
  130. }
  131. return dev;
  132. }
  133. int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
  134. {
  135. char *st;
  136. char *devstr_bkup = strdup(devstr);
  137. dfu->data.sf.dev = parse_dev(devstr_bkup);
  138. free(devstr_bkup);
  139. if (!dfu->data.sf.dev)
  140. return -ENODEV;
  141. dfu->dev_type = DFU_DEV_SF;
  142. dfu->max_buf_size = dfu->data.sf.dev->sector_size;
  143. st = strsep(&s, " ");
  144. if (!strcmp(st, "raw")) {
  145. dfu->layout = DFU_RAW_ADDR;
  146. dfu->data.sf.start = hextoul(s, &s);
  147. s++;
  148. dfu->data.sf.size = hextoul(s, &s);
  149. } else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
  150. (!strcmp(st, "part") || !strcmp(st, "partubi"))) {
  151. char mtd_id[32];
  152. struct mtd_device *mtd_dev;
  153. u8 part_num;
  154. struct part_info *pi;
  155. int ret, dev, part;
  156. dfu->layout = DFU_RAW_ADDR;
  157. dev = dectoul(s, &s);
  158. s++;
  159. part = dectoul(s, &s);
  160. sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
  161. printf("using id '%s'\n", mtd_id);
  162. mtdparts_init();
  163. ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
  164. if (ret != 0) {
  165. printf("Could not locate '%s'\n", mtd_id);
  166. return -1;
  167. }
  168. dfu->data.sf.start = pi->offset;
  169. dfu->data.sf.size = pi->size;
  170. if (!strcmp(st, "partubi"))
  171. dfu->data.sf.ubi = 1;
  172. } else {
  173. printf("%s: Memory layout (%s) not supported!\n", __func__, st);
  174. spi_flash_free(dfu->data.sf.dev);
  175. return -1;
  176. }
  177. dfu->get_medium_size = dfu_get_medium_size_sf;
  178. dfu->read_medium = dfu_read_medium_sf;
  179. dfu->write_medium = dfu_write_medium_sf;
  180. dfu->flush_medium = dfu_flush_medium_sf;
  181. dfu->poll_timeout = dfu_polltimeout_sf;
  182. dfu->free_entity = dfu_free_entity_sf;
  183. /* initial state */
  184. dfu->inited = 0;
  185. return 0;
  186. }