emsdp.c 2.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2018 Synopsys, Inc. All rights reserved.
  4. */
  5. #include <common.h>
  6. #include <dwmmc.h>
  7. #include <malloc.h>
  8. DECLARE_GLOBAL_DATA_PTR;
  9. #define ARC_PERIPHERAL_BASE 0xF0000000
  10. #define SDIO_BASE (ARC_PERIPHERAL_BASE + 0x10000)
  11. int board_mmc_init(bd_t *bis)
  12. {
  13. struct dwmci_host *host = NULL;
  14. host = malloc(sizeof(struct dwmci_host));
  15. if (!host) {
  16. printf("dwmci_host malloc fail!\n");
  17. return 1;
  18. }
  19. memset(host, 0, sizeof(struct dwmci_host));
  20. host->name = "Synopsys Mobile storage";
  21. host->ioaddr = (void *)SDIO_BASE;
  22. host->buswidth = 4;
  23. host->dev_index = 0;
  24. host->bus_hz = 50000000;
  25. add_dwmci(host, host->bus_hz / 2, 400000);
  26. return 0;
  27. }
  28. int board_mmc_getcd(struct mmc *mmc)
  29. {
  30. struct dwmci_host *host = mmc->priv;
  31. return !(dwmci_readl(host, DWMCI_CDETECT) & 1);
  32. }
  33. #define CREG_BASE 0xF0001000
  34. #define CREG_BOOT_OFFSET 0
  35. #define CREG_BOOT_WP_OFFSET 8
  36. #define CGU_BASE 0xF0000000
  37. #define CGU_IP_SW_RESET 0x0FF0
  38. void reset_cpu(ulong addr)
  39. {
  40. writel(1, (u32 *)(CGU_BASE + CGU_IP_SW_RESET));
  41. while (1)
  42. ; /* loop forever till reset */
  43. }
  44. static int do_emsdp_rom(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  45. {
  46. u32 creg_boot = readl((u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
  47. if (!strcmp(argv[1], "unlock"))
  48. creg_boot &= ~BIT(CREG_BOOT_WP_OFFSET);
  49. else if (!strcmp(argv[1], "lock"))
  50. creg_boot |= BIT(CREG_BOOT_WP_OFFSET);
  51. else
  52. return CMD_RET_USAGE;
  53. writel(creg_boot, (u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
  54. return CMD_RET_SUCCESS;
  55. }
  56. cmd_tbl_t cmd_emsdp[] = {
  57. U_BOOT_CMD_MKENT(rom, 2, 0, do_emsdp_rom, "", ""),
  58. };
  59. static int do_emsdp(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  60. {
  61. cmd_tbl_t *c;
  62. c = find_cmd_tbl(argv[1], cmd_emsdp, ARRAY_SIZE(cmd_emsdp));
  63. /* Strip off leading 'emsdp' command */
  64. argc--;
  65. argv++;
  66. if (c == NULL || argc > c->maxargs)
  67. return CMD_RET_USAGE;
  68. return c->cmd(cmdtp, flag, argc, argv);
  69. }
  70. U_BOOT_CMD(
  71. emsdp, CONFIG_SYS_MAXARGS, 0, do_emsdp,
  72. "Synopsys EMSDP specific commands",
  73. "rom unlock - Unlock non-volatile memory for writing\n"
  74. "emsdp rom lock - Lock non-volatile memory to prevent writing\n"
  75. );