88 lines
2.5 KiB
Plaintext
88 lines
2.5 KiB
Plaintext
#
|
|
# 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.
|
|
|
|
* 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
|
|
|
|
ex. configure and build for zc702 board
|
|
$ make zynq_zc702_config
|
|
$ make
|
|
|
|
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
|