dfu_sf.c 4.7 KB

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  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. spi_flash_free(dfu->data.sf.dev);
  75. }
  76. static struct spi_flash *parse_dev(char *devstr)
  77. {
  78. unsigned int bus;
  79. unsigned int cs;
  80. unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
  81. unsigned int mode = CONFIG_SF_DEFAULT_MODE;
  82. char *s, *endp;
  83. struct spi_flash *dev;
  84. s = strsep(&devstr, ":");
  85. if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
  86. printf("Invalid SPI bus %s\n", s);
  87. return NULL;
  88. }
  89. s = strsep(&devstr, ":");
  90. if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
  91. printf("Invalid SPI chip-select %s\n", s);
  92. return NULL;
  93. }
  94. s = strsep(&devstr, ":");
  95. if (s && *s) {
  96. speed = simple_strtoul(s, &endp, 0);
  97. if (*endp || !speed) {
  98. printf("Invalid SPI speed %s\n", s);
  99. return NULL;
  100. }
  101. }
  102. s = strsep(&devstr, ":");
  103. if (s && *s) {
  104. mode = simple_strtoul(s, &endp, 0);
  105. if (*endp || mode > 3) {
  106. printf("Invalid SPI mode %s\n", s);
  107. return NULL;
  108. }
  109. }
  110. dev = spi_flash_probe(bus, cs, speed, mode);
  111. if (!dev) {
  112. printf("Failed to create SPI flash at %d:%d:%d:%d\n",
  113. bus, cs, speed, mode);
  114. return NULL;
  115. }
  116. return dev;
  117. }
  118. int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
  119. {
  120. char *st;
  121. char *devstr_bkup = strdup(devstr);
  122. dfu->data.sf.dev = parse_dev(devstr_bkup);
  123. free(devstr_bkup);
  124. if (!dfu->data.sf.dev)
  125. return -ENODEV;
  126. dfu->dev_type = DFU_DEV_SF;
  127. dfu->max_buf_size = dfu->data.sf.dev->sector_size;
  128. st = strsep(&s, " ");
  129. if (!strcmp(st, "raw")) {
  130. dfu->layout = DFU_RAW_ADDR;
  131. dfu->data.sf.start = simple_strtoul(s, &s, 16);
  132. s++;
  133. dfu->data.sf.size = simple_strtoul(s, &s, 16);
  134. } else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
  135. (!strcmp(st, "part") || !strcmp(st, "partubi"))) {
  136. char mtd_id[32];
  137. struct mtd_device *mtd_dev;
  138. u8 part_num;
  139. struct part_info *pi;
  140. int ret, dev, part;
  141. dfu->layout = DFU_RAW_ADDR;
  142. dev = simple_strtoul(s, &s, 10);
  143. s++;
  144. part = simple_strtoul(s, &s, 10);
  145. sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
  146. printf("using id '%s'\n", mtd_id);
  147. mtdparts_init();
  148. ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
  149. if (ret != 0) {
  150. printf("Could not locate '%s'\n", mtd_id);
  151. return -1;
  152. }
  153. dfu->data.sf.start = pi->offset;
  154. dfu->data.sf.size = pi->size;
  155. if (!strcmp(st, "partubi"))
  156. dfu->data.sf.ubi = 1;
  157. } else {
  158. printf("%s: Memory layout (%s) not supported!\n", __func__, st);
  159. spi_flash_free(dfu->data.sf.dev);
  160. return -1;
  161. }
  162. dfu->get_medium_size = dfu_get_medium_size_sf;
  163. dfu->read_medium = dfu_read_medium_sf;
  164. dfu->write_medium = dfu_write_medium_sf;
  165. dfu->flush_medium = dfu_flush_medium_sf;
  166. dfu->poll_timeout = dfu_polltimeout_sf;
  167. dfu->free_entity = dfu_free_entity_sf;
  168. /* initial state */
  169. dfu->inited = 0;
  170. return 0;
  171. }