1 # SPDX-License-Identifier: GPL-2.0+ 2 # 3 # Xilinx ZYNQ U-Boot 4 # 5 # (C) Copyright 2013 Xilinx, Inc. 6 7 1. About this 8 9 This document describes the information about Xilinx Zynq U-Boot - 10 like supported boards, ML status and TODO list. 11 12 2. Zynq boards 13 14 Xilinx Zynq-7000 All Programmable SoCs enable extensive system level 15 differentiation, integration, and flexibility through hardware, software, 16 and I/O programmability. 17 18 * zc702 (single qspi, gem0, mmc) [1] 19 * zc706 (dual parallel qspi, gem0, mmc) [2] 20 * zed (single qspi, gem0, mmc) [3] 21 * microzed (single qspi, gem0, mmc) [4] 22 * zc770 23 - zc770-xm010 (single qspi, gem0, mmc) 24 - zc770-xm011 (8 or 16 bit nand) 25 - zc770-xm012 (nor) 26 - zc770-xm013 (dual parallel qspi, gem1) 27 28 3. Building 29 30 ex. configure and build for zc702 board 31 $ make zynq_zc702_config 32 $ make 33 34 4. Bootmode 35 36 Zynq has a facility to read the bootmode from the slcr bootmode register 37 once user is setting through jumpers on the board - see page no:1546 on [5] 38 39 All possible bootmode values are defined in Table 6-2:Boot_Mode MIO Pins 40 on [5]. 41 42 board_late_init() will read the bootmode values using slcr bootmode register 43 at runtime and assign the modeboot variable to specific bootmode string which 44 is intern used in autoboot. 45 46 SLCR bootmode register Bit[3:0] values 47 #define ZYNQ_BM_NOR 0x02 48 #define ZYNQ_BM_SD 0x05 49 #define ZYNQ_BM_JTAG 0x0 50 51 "modeboot" variable can assign any of "norboot", "sdboot" or "jtagboot" 52 bootmode strings at runtime. 53 54 5. Mainline status 55 56 - Added basic board configurations support. 57 - Added zynq u-boot bsp code - arch/arm/cpu/armv7/zynq 58 - Added zynq boards named - zc70x, zed, microzed, zc770_xm010/xm011/xm012/xm013 59 - Added zynq drivers: 60 serial - drivers/serial/serial_zynq.c 61 net - drivers/net/zynq_gem.c 62 mmc - drivers/mmc/zynq_sdhci.c 63 spi - drivers/spi/zynq_spi.c 64 qspi - drivers/spi/zynq_qspi.c 65 i2c - drivers/i2c/zynq_i2c.c 66 nand - drivers/mtd/nand/zynq_nand.c 67 - Done proper cleanups on board configurations 68 - Added basic FDT support for zynq boards 69 - d-cache support for zynq_gem.c 70 71 6. TODO 72 73 - Add FDT support on individual drivers 74 75 [1] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC702-G.htm 76 [2] http://www.xilinx.com/products/boards-and-kits/EK-Z7-ZC706-G.htm 77 [3] http://zedboard.org/product/zedboard 78 [4] http://zedboard.org/product/microzed 79 [5] http://www.xilinx.com/support/documentation/user_guides/ug585-Zynq-7000-TRM.pdf 80 81 -- 82 Jagannadha Sutradharudu Teki <jaganna (a] xilinx.com> 83 Sun Dec 15 14:52:41 IST 2013 84
