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diff --git a/doc/README.zynq b/doc/README.zynq new file mode 100644 index 000000000..043c97014 --- /dev/null +++ b/doc/README.zynq @@ -0,0 +1,94 @@ +# +# 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. Building + + # Configure for zc70x board + $ make zynq_zc70x_config + Configuring for zynq_zc70x board... + + # Building default dts for zc702 board + $ make + + # Building specified dts for zc706 board + $ make DEVICE_TREE=zynq-zc706 + +4. 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. + +5. Mainline status + +- Added basic board configurations support. +- Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq +- Added zynq boards named - zc70x, zed, microzed, zc770_xm010, zc770_xm012, zc770_xm013 +- 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 +- Done proper cleanups on board configurations +- Added basic FDT support for zynq boards +- d-cache support for zynq_gem.c + +6. TODO + +- Add zynq boards support - zc770_xm011 +- Add zynq qspi controller driver +- Add zynq nand controller driver +- Add FDT support on individual drivers + +[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 |