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- #
- # Xilinx ZYNQ U-Boot
- #
- # (C) Copyright 2013 Xilinx, Inc.
- #
- # SPDX-License-Identifier: GPL-2.0+
- #
- 1. About this
- This document describes the information about Xilinx Zynq U-Boot -
- like supported boards, ML status and TODO list.
- 2. Zynq boards
- Xilinx Zynq-7000 All Programmable SoCs enable extensive system level
- differentiation, integration, and flexibility through hardware, software,
- and I/O programmability.
- * zc70x
- - zc702 (single qspi, gem0, mmc) [1]
- - zc706 (dual parallel qspi, gem0, mmc) [2]
- * zed (single qspi, gem0, mmc) [3]
- * microzed (single qspi, gem0, mmc) [4]
- * zc770
- - zc770-xm010 (single qspi, gem0, mmc)
- - zc770-xm011 (8 or 16 bit nand)
- - zc770-xm012 (nor)
- - zc770-xm013 (dual parallel qspi, gem1)
- 3. Bootmode
- Zynq has a facility to read the bootmode from the slcr bootmode register
- once user is setting through jumpers on the board - see page no:1546 on [5]
- All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins
- on [5].
- board_late_init() will read the bootmode values using slcr bootmode register
- at runtime and assign the modeboot variable to specific bootmode string which
- is intern used in autoboot.
- SLCR bootmode register Bit[3:0] values
- #define ZYNQ_BM_NOR 0x02
- #define ZYNQ_BM_SD 0x05
- #define ZYNQ_BM_JTAG 0x0
- "modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
- bootmode strings at runtime.
- 4. Mainline status
- - Added basic board configurations support.
- - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq
- - Added zynq boards named - zynq, zynq_dcc
- - Added zynq drivers:
- serial - drivers/serial/serial_zynq.c
- net - drivers/net/zynq_gem.c
- mmc - drivers/mmc/zynq_sdhci.c
- mmc - drivers/mmc/zynq_sdhci.c
- spi- drivers/spi/zynq_spi.c
- i2c - drivers/i2c/zynq_i2c.c
- 5. TODO
- - Add zynq boards support - zc70x, zed, microzed, zc770
- - Add zynq qspi controller driver
- - Add zynq nand controller driver
- - d-cache support for zynq_gem.c
- - FDT support for zynq boards
- - Need proper cleanups on board configurations
- [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm
- [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm
- [3] http://zedboard.org/product/zedboard
- [4] http://zedboard.org/product/microzed
- [5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf
- --
- Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
- Sun Dec 15 14:52:41 IST 2013
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