README.zynq 2.7 KB

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  1. #
  2. # Xilinx ZYNQ U-Boot
  3. #
  4. # (C) Copyright 2013 Xilinx, Inc.
  5. #
  6. # SPDX-License-Identifier: GPL-2.0+
  7. #
  8. 1. About this
  9. This document describes the information about Xilinx Zynq U-Boot -
  10. like supported boards, ML status and TODO list.
  11. 2. Zynq boards
  12. Xilinx Zynq-7000 All Programmable SoCs enable extensive system level
  13. differentiation, integration, and flexibility through hardware, software,
  14. and I/O programmability.
  15. * zc70x
  16. - zc702 (single qspi, gem0, mmc) [1]
  17. - zc706 (dual parallel qspi, gem0, mmc) [2]
  18. * zed (single qspi, gem0, mmc) [3]
  19. * microzed (single qspi, gem0, mmc) [4]
  20. * zc770
  21. - zc770-xm010 (single qspi, gem0, mmc)
  22. - zc770-xm011 (8 or 16 bit nand)
  23. - zc770-xm012 (nor)
  24. - zc770-xm013 (dual parallel qspi, gem1)
  25. 3. Building
  26. # Configure for zc70x board
  27. $ make zynq_zc70x_config
  28. Configuring for zynq_zc70x board...
  29. # Building default dts for zc702 board
  30. $ make
  31. # Building specified dts for zc706 board
  32. $ make DEVICE_TREE=zynq-zc706
  33. 4. Bootmode
  34. Zynq has a facility to read the bootmode from the slcr bootmode register
  35. once user is setting through jumpers on the board - see page no:1546 on [5]
  36. All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins
  37. on [5].
  38. board_late_init() will read the bootmode values using slcr bootmode register
  39. at runtime and assign the modeboot variable to specific bootmode string which
  40. is intern used in autoboot.
  41. SLCR bootmode register Bit[3:0] values
  42. #define ZYNQ_BM_NOR 0x02
  43. #define ZYNQ_BM_SD 0x05
  44. #define ZYNQ_BM_JTAG 0x0
  45. "modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
  46. bootmode strings at runtime.
  47. 5. Mainline status
  48. - Added basic board configurations support.
  49. - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq
  50. - Added zynq boards named - zc70x, zed, microzed, zc770_xm010, zc770_xm012, zc770_xm013
  51. - Added zynq drivers:
  52. serial - drivers/serial/serial_zynq.c
  53. net - drivers/net/zynq_gem.c
  54. mmc - drivers/mmc/zynq_sdhci.c
  55. mmc - drivers/mmc/zynq_sdhci.c
  56. spi- drivers/spi/zynq_spi.c
  57. i2c - drivers/i2c/zynq_i2c.c
  58. - Done proper cleanups on board configurations
  59. - Added basic FDT support for zynq boards
  60. - d-cache support for zynq_gem.c
  61. 6. TODO
  62. - Add zynq boards support - zc770_xm011
  63. - Add zynq qspi controller driver
  64. - Add zynq nand controller driver
  65. - Add FDT support on individual drivers
  66. [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm
  67. [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm
  68. [3] http://zedboard.org/product/zedboard
  69. [4] http://zedboard.org/product/microzed
  70. [5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf
  71. --
  72. Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
  73. Sun Dec 15 14:52:41 IST 2013