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