board.c 1.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2014 - 2019 Xilinx, Inc.
  4. * Michal Simek <michal.simek@xilinx.com>
  5. */
  6. #include <common.h>
  7. #include <asm/sections.h>
  8. #include <dm/uclass.h>
  9. #include <i2c.h>
  10. int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
  11. {
  12. int ret = -EINVAL;
  13. #if defined(CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET)
  14. struct udevice *dev;
  15. ofnode eeprom;
  16. eeprom = ofnode_get_chosen_node("xlnx,eeprom");
  17. if (!ofnode_valid(eeprom))
  18. return -ENODEV;
  19. debug("%s: Path to EEPROM %s\n", __func__,
  20. ofnode_read_chosen_string("xlnx,eeprom"));
  21. ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
  22. if (ret)
  23. return ret;
  24. ret = dm_i2c_read(dev, CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET, ethaddr, 6);
  25. if (ret)
  26. debug("%s: I2C EEPROM MAC address read failed\n", __func__);
  27. else
  28. debug("%s: I2C EEPROM MAC %pM\n", __func__, ethaddr);
  29. #endif
  30. return ret;
  31. }
  32. #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE)
  33. void *board_fdt_blob_setup(void)
  34. {
  35. static void *fdt_blob = (void *)CONFIG_XILINX_OF_BOARD_DTB_ADDR;
  36. if (fdt_magic(fdt_blob) == FDT_MAGIC)
  37. return fdt_blob;
  38. debug("DTB is not passed via %p\n", fdt_blob);
  39. #ifdef CONFIG_SPL_BUILD
  40. /* FDT is at end of BSS unless it is in a different memory region */
  41. if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
  42. fdt_blob = (ulong *)&_image_binary_end;
  43. else
  44. fdt_blob = (ulong *)&__bss_end;
  45. #else
  46. /* FDT is at end of image */
  47. fdt_blob = (ulong *)&_end;
  48. #endif
  49. if (fdt_magic(fdt_blob) == FDT_MAGIC)
  50. return fdt_blob;
  51. debug("DTB is also not passed via %p\n", fdt_blob);
  52. return NULL;
  53. }
  54. #endif