111 lines
2.9 KiB
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111 lines
2.9 KiB
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.. SPDX-License-Identifier: GPL-2.0+
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.. (C) Copyright 2013 Xilinx, Inc.
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ZYNQ
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====
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About this
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----------
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This document describes the information about Xilinx Zynq U-Boot -
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like supported boards, ML status and TODO list.
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Zynq boards
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-----------
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Xilinx Zynq-7000 All Programmable SoCs enable extensive system level
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differentiation, integration, and flexibility through hardware, software,
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and I/O programmability.
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* zc702 (single qspi, gem0, mmc) [1]
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* zc706 (dual parallel qspi, gem0, mmc) [2]
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* zed (single qspi, gem0, mmc) [3]
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* microzed (single qspi, gem0, mmc) [4]
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* zc770
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- zc770-xm010 (single qspi, gem0, mmc)
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- zc770-xm011 (8 or 16 bit nand)
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- zc770-xm012 (nor)
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- zc770-xm013 (dual parallel qspi, gem1)
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Building
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--------
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configure and build for zc702 board::
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$ export DEVICE_TREE=zynq-zc702
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$ make xilinx_zynq_virt_defconfig
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$ make
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Bootmode
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--------
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Zynq has a facility to read the bootmode from the slcr bootmode register
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once user is setting through jumpers on the board - see page no:1546 on [5]
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All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins
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on [5].
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board_late_init() will read the bootmode values using slcr bootmode register
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at runtime and assign the modeboot variable to specific bootmode string which
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is intern used in autoboot.
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SLCR bootmode register Bit[3:0] values
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.. code-block:: c
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#define ZYNQ_BM_NOR 0x02
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#define ZYNQ_BM_SD 0x05
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#define ZYNQ_BM_JTAG 0x0
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"modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot"
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bootmode strings at runtime.
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Flashing
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--------
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SD Card
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^^^^^^^
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To write an image that boots from a SD card first create a FAT32 partition
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and a FAT32 filesystem on the SD card::
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sudo fdisk /dev/sdx
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sudo mkfs.vfat -F 32 /dev/sdx1
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Mount the SD card and copy the SPL and U-Boot to the root directory of the
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SD card::
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sudo mount -t vfat /dev/sdx1 /mnt
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sudo cp spl/boot.bin /mnt
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sudo cp u-boot.img /mnt
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Mainline status
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---------------
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- Added basic board configurations support.
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- Added zynq u-boot bsp code - arch/arm/mach-zynq
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- Added zynq boards named - zc70x, zed, microzed, zc770_xm010/xm011/xm012/xm013
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- Added zynq drivers:
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:serial: drivers/serial/serial_zynq.c
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:net: drivers/net/zynq_gem.c
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:mmc: drivers/mmc/zynq_sdhci.c
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:spi: drivers/spi/zynq_spi.c
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:qspi: drivers/spi/zynq_qspi.c
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:i2c: drivers/i2c/zynq_i2c.c
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:nand: drivers/mtd/nand/raw/zynq_nand.c
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- Done proper cleanups on board configurations
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- Added basic FDT support for zynq boards
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- d-cache support for zynq_gem.c
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* [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm
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* [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm
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* [3] http://zedboard.org/product/zedboard
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* [4] http://zedboard.org/product/microzed
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* [5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf
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.. Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
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.. Sun Dec 15 14:52:41 IST 2013
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