mmc_write.c 4.2 KB

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  1. /*
  2. * Copyright 2008, Freescale Semiconductor, Inc
  3. * Andy Fleming
  4. *
  5. * Based vaguely on the Linux code
  6. *
  7. * SPDX-License-Identifier: GPL-2.0+
  8. */
  9. #include <config.h>
  10. #include <common.h>
  11. #include <part.h>
  12. #include <div64.h>
  13. #include <linux/math64.h>
  14. #include "mmc_private.h"
  15. static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
  16. {
  17. struct mmc_cmd cmd;
  18. ulong end;
  19. int err, start_cmd, end_cmd;
  20. if (mmc->high_capacity) {
  21. end = start + blkcnt - 1;
  22. } else {
  23. end = (start + blkcnt - 1) * mmc->write_bl_len;
  24. start *= mmc->write_bl_len;
  25. }
  26. if (IS_SD(mmc)) {
  27. start_cmd = SD_CMD_ERASE_WR_BLK_START;
  28. end_cmd = SD_CMD_ERASE_WR_BLK_END;
  29. } else {
  30. start_cmd = MMC_CMD_ERASE_GROUP_START;
  31. end_cmd = MMC_CMD_ERASE_GROUP_END;
  32. }
  33. cmd.cmdidx = start_cmd;
  34. cmd.cmdarg = start;
  35. cmd.resp_type = MMC_RSP_R1;
  36. err = mmc_send_cmd(mmc, &cmd, NULL);
  37. if (err)
  38. goto err_out;
  39. cmd.cmdidx = end_cmd;
  40. cmd.cmdarg = end;
  41. err = mmc_send_cmd(mmc, &cmd, NULL);
  42. if (err)
  43. goto err_out;
  44. cmd.cmdidx = MMC_CMD_ERASE;
  45. cmd.cmdarg = MMC_ERASE_ARG;
  46. cmd.resp_type = MMC_RSP_R1b;
  47. err = mmc_send_cmd(mmc, &cmd, NULL);
  48. if (err)
  49. goto err_out;
  50. return 0;
  51. err_out:
  52. puts("mmc erase failed\n");
  53. return err;
  54. }
  55. unsigned long mmc_berase(block_dev_desc_t *block_dev, lbaint_t start,
  56. lbaint_t blkcnt)
  57. {
  58. int dev_num = block_dev->dev;
  59. int err = 0;
  60. u32 start_rem, blkcnt_rem;
  61. struct mmc *mmc = find_mmc_device(dev_num);
  62. lbaint_t blk = 0, blk_r = 0;
  63. int timeout = 1000;
  64. if (!mmc)
  65. return -1;
  66. /*
  67. * We want to see if the requested start or total block count are
  68. * unaligned. We discard the whole numbers and only care about the
  69. * remainder.
  70. */
  71. err = div_u64_rem(start, mmc->erase_grp_size, &start_rem);
  72. err = div_u64_rem(blkcnt, mmc->erase_grp_size, &blkcnt_rem);
  73. if (start_rem || blkcnt_rem)
  74. printf("\n\nCaution! Your devices Erase group is 0x%x\n"
  75. "The erase range would be change to "
  76. "0x" LBAF "~0x" LBAF "\n\n",
  77. mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
  78. ((start + blkcnt + mmc->erase_grp_size)
  79. & ~(mmc->erase_grp_size - 1)) - 1);
  80. while (blk < blkcnt) {
  81. blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
  82. mmc->erase_grp_size : (blkcnt - blk);
  83. err = mmc_erase_t(mmc, start + blk, blk_r);
  84. if (err)
  85. break;
  86. blk += blk_r;
  87. /* Waiting for the ready status */
  88. if (mmc_send_status(mmc, timeout))
  89. return 0;
  90. }
  91. return blk;
  92. }
  93. static ulong mmc_write_blocks(struct mmc *mmc, lbaint_t start,
  94. lbaint_t blkcnt, const void *src)
  95. {
  96. struct mmc_cmd cmd;
  97. struct mmc_data data;
  98. int timeout = 1000;
  99. if ((start + blkcnt) > mmc->block_dev.lba) {
  100. printf("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
  101. start + blkcnt, mmc->block_dev.lba);
  102. return 0;
  103. }
  104. if (blkcnt == 0)
  105. return 0;
  106. else if (blkcnt == 1)
  107. cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK;
  108. else
  109. cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK;
  110. if (mmc->high_capacity)
  111. cmd.cmdarg = start;
  112. else
  113. cmd.cmdarg = start * mmc->write_bl_len;
  114. cmd.resp_type = MMC_RSP_R1;
  115. data.src = src;
  116. data.blocks = blkcnt;
  117. data.blocksize = mmc->write_bl_len;
  118. data.flags = MMC_DATA_WRITE;
  119. if (mmc_send_cmd(mmc, &cmd, &data)) {
  120. printf("mmc write failed\n");
  121. return 0;
  122. }
  123. /* SPI multiblock writes terminate using a special
  124. * token, not a STOP_TRANSMISSION request.
  125. */
  126. if (!mmc_host_is_spi(mmc) && blkcnt > 1) {
  127. cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
  128. cmd.cmdarg = 0;
  129. cmd.resp_type = MMC_RSP_R1b;
  130. if (mmc_send_cmd(mmc, &cmd, NULL)) {
  131. printf("mmc fail to send stop cmd\n");
  132. return 0;
  133. }
  134. }
  135. /* Waiting for the ready status */
  136. if (mmc_send_status(mmc, timeout))
  137. return 0;
  138. return blkcnt;
  139. }
  140. ulong mmc_bwrite(block_dev_desc_t *block_dev, lbaint_t start, lbaint_t blkcnt,
  141. const void *src)
  142. {
  143. int dev_num = block_dev->dev;
  144. lbaint_t cur, blocks_todo = blkcnt;
  145. struct mmc *mmc = find_mmc_device(dev_num);
  146. if (!mmc)
  147. return 0;
  148. if (mmc_set_blocklen(mmc, mmc->write_bl_len))
  149. return 0;
  150. do {
  151. cur = (blocks_todo > mmc->cfg->b_max) ?
  152. mmc->cfg->b_max : blocks_todo;
  153. if (mmc_write_blocks(mmc, start, cur, src) != cur)
  154. return 0;
  155. blocks_todo -= cur;
  156. start += cur;
  157. src += cur * mmc->write_bl_len;
  158. } while (blocks_todo > 0);
  159. return blkcnt;
  160. }