- Add STM32MP1 DDR driver update:
These update introduce the DDR interactive mode described in:
https://wiki.st.com/stm32mpu/index.php/U-Boot_SPL:_DDR_interactive_mode
This mode is used by the CubeMX: DDR tuning tool.
https://wiki.st.com/stm32mpu/index.php/STM32CubeMX
The DDR interactive mode is NOT activated by default because
it increase the SPL size and slow down the boot time
(200ms wait added).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJc5rdIAAoJEMrHeC97M/+mw64P/0jD3C1jvtwkzFQ2DPvnSQEk
iTZHMb91/9GncSY0S2Cgn8a2+m24F7YFLqibKSdduLLr/w98Zfi7kmO+ju/Kn+qE
aG6iomyour8+Pr+1LMPolsKKM8lULSgrd4ALRA5CegNsXijvYEE7N8mPrBpdIQem
BaM4HnQpbtxXU9J/rGHAVagLuHbJmwBvZBQTBAWfQdNR5+vGfplH2sF0cxJF5UTW
06yBXrwjLW6PEVYZbzYiRQ5Gn7BnBe4nXrl4ReDtS5e4ueRKM166TZljvNCd60KI
B49eLxd0wT2Zutsz1rT5c/LChXo3cr8FXM3csJ6J6cIBdfFF3frHbIEDM2jZTxJf
jN7pAHpxbRdYS/GbWS5mSuUyKmxDPt6Kfd7LQUYX9qktqeLG9LfkrmLfGdCSiwkB
64Z15DoHAuDMab+LlV+rz8ns3YAV0ruFryWfZ8udLWuX3G6NDmivafLR3dgNRdNB
otkyCdIlq8GQUm3w+5r9wm7aGvHB3UtNYK870AnYA20vmn/WVuUBZ6yE+lce/QpV
zFS4dgsdbn41EXO/O9TtwMyKT+/s138u2+L7CEegXiNneJmwzbJg3YPeMuaiF8Y2
oYqlUmfVO/ZuoVvr5dwo4TY96nEhRf2Ul36spRdrx8wBZ0YdL+ByDO5Pcc2B9A+P
M80QqlT64BJDJ1CqhW5m
=meeB
-----END PGP SIGNATURE-----
Merge tag 'u-boot-stm32-20190523' of https://github.com/pchotard/u-boot
- Add various STM32MP1 fixes for serial, env, clk, board, i2c ...
- Add STM32MP1 DDR driver update:
These update introduce the DDR interactive mode described in:
https://wiki.st.com/stm32mpu/index.php/U-Boot_SPL:_DDR_interactive_mode
This mode is used by the CubeMX: DDR tuning tool.
https://wiki.st.com/stm32mpu/index.php/STM32CubeMX
The DDR interactive mode is NOT activated by default because
it increase the SPL size and slow down the boot time
(200ms wait added).
# SPDX-License-Identifier: GPL-2.0+
#
# Xilinx ZYNQ U-Boot
#
# (C) Copyright 2013 Xilinx, Inc.
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/xm011/xm012/xm013
- Added zynq drivers:
serial - drivers/serial/serial_zynq.c
net - drivers/net/zynq_gem.c
mmc - drivers/mmc/zynq_sdhci.c
spi - drivers/spi/zynq_spi.c
qspi - drivers/spi/zynq_qspi.c
i2c - drivers/i2c/zynq_i2c.c
nand - drivers/mtd/nand/raw/zynq_nand.c
- Done proper cleanups on board configurations
- Added basic FDT support for zynq boards
- d-cache support for zynq_gem.c
6. TODO
- 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