README.zynq 2.4 KB

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  1. # SPDX-License-Identifier: GPL-2.0+
  2. #
  3. # Xilinx ZYNQ U-Boot
  4. #
  5. # (C) Copyright 2013 Xilinx, Inc.
  6. 1. About this
  7. This document describes the information about Xilinx Zynq U-Boot -
  8. like supported boards, ML status and TODO list.
  9. 2. Zynq boards
  10. Xilinx Zynq-7000 All Programmable SoCs enable extensive system level
  11. differentiation, integration, and flexibility through hardware, software,
  12. and I/O programmability.
  13. * zc702 (single qspi, gem0, mmc) [1]
  14. * zc706 (dual parallel qspi, gem0, mmc) [2]
  15. * zed (single qspi, gem0, mmc) [3]
  16. * microzed (single qspi, gem0, mmc) [4]
  17. * zc770
  18. - zc770-xm010 (single qspi, gem0, mmc)
  19. - zc770-xm011 (8 or 16 bit nand)
  20. - zc770-xm012 (nor)
  21. - zc770-xm013 (dual parallel qspi, gem1)
  22. 3. Building
  23. ex. configure and build for zc702 board
  24. $ make zynq_zc702_config
  25. $ make
  26. 4. Bootmode
  27. Zynq has a facility to read the bootmode from the slcr bootmode register
  28. once user is setting through jumpers on the board - see page no:1546 on [5]
  29. All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins
  30. on [5].
  31. board_late_init() will read the bootmode values using slcr bootmode register
  32. at runtime and assign the modeboot variable to specific bootmode string which
  33. is intern used in autoboot.
  34. SLCR bootmode register Bit[3:0] values
  35. #define ZYNQ_BM_NOR 0x02
  36. #define ZYNQ_BM_SD 0x05
  37. #define ZYNQ_BM_JTAG 0x0
  38. "modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
  39. bootmode strings at runtime.
  40. 5. Mainline status
  41. - Added basic board configurations support.
  42. - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq
  43. - Added zynq boards named - zc70x, zed, microzed, zc770_xm010/xm011/xm012/xm013
  44. - Added zynq drivers:
  45. serial - drivers/serial/serial_zynq.c
  46. net - drivers/net/zynq_gem.c
  47. mmc - drivers/mmc/zynq_sdhci.c
  48. spi - drivers/spi/zynq_spi.c
  49. qspi - drivers/spi/zynq_qspi.c
  50. i2c - drivers/i2c/zynq_i2c.c
  51. nand - drivers/mtd/nand/raw/zynq_nand.c
  52. - Done proper cleanups on board configurations
  53. - Added basic FDT support for zynq boards
  54. - d-cache support for zynq_gem.c
  55. 6. TODO
  56. - Add FDT support on individual drivers
  57. [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm
  58. [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm
  59. [3] http://zedboard.org/product/zedboard
  60. [4] http://zedboard.org/product/microzed
  61. [5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf
  62. --
  63. Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
  64. Sun Dec 15 14:52:41 IST 2013