soc_xilinx_zynqmp.c 1.8 KB

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  1. // SPDX-License-Identifier: GPL-2.0
  2. /*
  3. * Xilinx ZynqMP SOC driver
  4. *
  5. * Copyright (C) 2021 Xilinx, Inc.
  6. */
  7. #include <common.h>
  8. #include <dm.h>
  9. #include <asm/cache.h>
  10. #include <soc.h>
  11. #include <zynqmp_firmware.h>
  12. #include <asm/arch/sys_proto.h>
  13. #include <asm/arch/hardware.h>
  14. /*
  15. * Zynqmp has 4 silicon revisions
  16. * v0 -> 0(XCZU9EG-ES1)
  17. * v1 -> 1(XCZU3EG-ES1, XCZU15EG-ES1)
  18. * v2 -> 2(XCZU7EV-ES1, XCZU9EG-ES2, XCZU19EG-ES1)
  19. * v3 -> 3(Production Level)
  20. */
  21. static const char zynqmp_family[] = "ZynqMP";
  22. struct soc_xilinx_zynqmp_priv {
  23. const char *family;
  24. char revision;
  25. };
  26. static int soc_xilinx_zynqmp_get_family(struct udevice *dev, char *buf, int size)
  27. {
  28. struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
  29. return snprintf(buf, size, "%s", priv->family);
  30. }
  31. static int soc_xilinx_zynqmp_get_revision(struct udevice *dev, char *buf, int size)
  32. {
  33. struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
  34. return snprintf(buf, size, "v%d", priv->revision);
  35. }
  36. static const struct soc_ops soc_xilinx_zynqmp_ops = {
  37. .get_family = soc_xilinx_zynqmp_get_family,
  38. .get_revision = soc_xilinx_zynqmp_get_revision,
  39. };
  40. static int soc_xilinx_zynqmp_probe(struct udevice *dev)
  41. {
  42. struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev);
  43. u32 ret_payload[4];
  44. int ret;
  45. priv->family = zynqmp_family;
  46. if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3 ||
  47. !IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE))
  48. ret = zynqmp_mmio_read(ZYNQMP_PS_VERSION, &ret_payload[2]);
  49. else
  50. ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0,
  51. ret_payload);
  52. if (ret < 0)
  53. return ret;
  54. priv->revision = ret_payload[2] & ZYNQMP_PS_VER_MASK;
  55. return 0;
  56. }
  57. U_BOOT_DRIVER(soc_xilinx_zynqmp) = {
  58. .name = "soc_xilinx_zynqmp",
  59. .id = UCLASS_SOC,
  60. .ops = &soc_xilinx_zynqmp_ops,
  61. .probe = soc_xilinx_zynqmp_probe,
  62. .priv_auto = sizeof(struct soc_xilinx_zynqmp_priv),
  63. .flags = DM_FLAG_PRE_RELOC,
  64. };