u-boot/doc
Simon Glass 7ac99be6e2 x86: Add an ICH6 pin configuration driver
Add a driver which sets up the pin configuration on x86 devices with an ICH6
(or later) Platform Controller Hub.

The driver is not in the pinctrl uclass due to some oddities of the way x86
devices work:

- The GPIO controller is not present in I/O space until it is set up
- This is done by writing a register in the PCH
- The PCH has a driver which itself uses PCI, another driver
- The pinctrl uclass requires that a pinctrl device be available before any
other device can be probed

It would be possible to work around the limitations by:
- Hard-coding the GPIO address rather than reading it from the PCH
- Using special x86 PCI access to set the GPIO address in the PCH

However it is not clear that this is better, since the pin configuration
driver does not actually provide normal pin configuration services - it
simply sets up all the pins statically when probed. While this remains the
case, it seems better to use a syscon uclass instead. This can be probed
whenever it is needed, without any limitations.

Also add an 'invert' property to support inverting the input.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-17 10:27:25 +08:00
..
device-tree-bindings x86: Add an ICH6 pin configuration driver 2016-03-17 10:27:25 +08:00
DocBook Various Makefiles: Add SPDX-License-Identifier tags 2015-11-10 09:19:52 -05:00
driver-model dm: Remove ARM dcc from the list 2016-02-24 18:44:14 -05:00
SPI Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
SPL Fix references to the documentation files 2013-05-10 08:16:33 -04:00
uImage.FIT mkimage: Support placing data outside the FIT 2016-03-14 19:18:29 -04:00
feature-removal-schedule.txt Change Andy Fleming's email address 2014-08-06 09:12:30 -04:00
git-mailrc x86: Remove Graeme Russ from the git alias file 2015-12-21 09:37:46 -05:00
I2C_Edge_Conditions rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
kwboot.1 Change e-mail address of Luka Perkov 2012-12-07 08:47:52 -07:00
mkimage.1 mkimage: Support placing data outside the FIT 2016-03-14 19:18:29 -04:00
README.440-DDR-performance Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.ag101p NDS32: Generic Board Support and Unsupport 2015-08-28 11:46:35 -04:00
README.AMCC-eval-boards-cleanup Major cleanup for AMCC PPC4xx eval boards. 2005-08-01 16:49:12 +02:00
README.android-fastboot usb: CONFIG_USB_FASTBOOT prefix replacement for consistency 2015-07-22 08:57:54 +02:00
README.android-fastboot-protocol usb/gadget: add the fastboot gadget 2014-05-08 10:38:30 +02:00
README.ARC arc: add README for architecture 2014-02-07 08:14:34 -05:00
README.arm-caches doc: ARM: Use the right function name 2015-01-14 11:37:39 -05:00
README.ARM-memory-map Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE 2010-10-18 22:07:10 +02:00
README.arm-relocation nand: mxc: Switch NAND SPL to generic SPL 2013-04-12 07:55:07 +02:00
README.arm64 arm64: Remove non-full-va map code 2016-03-15 15:13:10 -04:00
README.at91 ARM: at91: add NAND partition table and index 2013-05-21 11:54:21 +02:00
README.at91-soc at91: remove all occourances of CONFIG_AT91_LEGACY 2013-11-13 22:17:57 +01:00
README.atmel_mci ATMEL: remove old atmel_mci driver 2012-03-13 12:06:42 +01:00
README.atmel_pmecc arm:at91: enable ROM loadable atmel image 2014-05-27 00:10:49 +02:00
README.autoboot autoboot.c: Remove CONFIG_AUTOBOOT_STOP_STR2 and CONFIG_AUTOBOOT_DELAY_STR2 2015-06-08 10:45:11 -04:00
README.AVR32 avr32: Update README 2008-09-01 13:41:58 +02:00
README.AVR32-port-muxing doc: Fix some typos in different files 2012-03-27 13:31:37 +02:00
README.b4860qds Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.bedbug Move arch/ppc to arch/powerpc 2010-04-21 23:42:38 +02:00
README.bitbangMII Coding Style cleanup; update CHANGELOG, prepare -rc1 2009-10-28 00:49:47 +01:00
README.blackfin add some more Blackfin docs 2008-02-04 19:26:54 -05:00
README.bootmenu Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
README.bus_vcxk Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
README.cfi board/ti/am335x: add support for beaglebone NOR Cape 2014-08-25 10:47:56 -04:00
README.clang Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.commands kbuild: rename TOPDIR to stctree 2014-03-12 17:04:55 -04:00
README.commands.itest * Patch by Laurent Mohin, 10 Feb 2004: 2004-02-23 20:48:38 +00:00
README.commands.spl Add cmd_spl command 2012-03-27 22:05:28 +02:00
README.console powerpc: remove genietv board support 2014-04-18 10:42:29 -04:00
README.davinci arm, da850evm: Add an SPL for SPI boot 2011-12-24 10:23:30 +01:00
README.davinci.nand_spl arm, davinci: add cam_enc_4xx support 2011-11-03 22:56:25 +01:00
README.dfutftp doc: dfu: tftp: README entry for TFTP extension of DFU 2015-09-07 13:41:04 +02:00
README.displaying-bmps lcd: implement a callback for splashimage 2013-03-11 11:06:09 -04:00
README.distro Fix variable documented in README.distro for PXE address. 2016-02-15 12:04:45 -05:00
README.dns Coding Style cleanup; update CHANGELOG. 2009-07-23 22:23:23 +02:00
README.drivers.eth net: cosmetic: Fix var naming net <-> eth drivers 2015-04-18 11:11:33 -06:00
README.efi efi_loader: Add README section in README.efi 2016-03-15 21:30:12 -04:00
README.enetaddr net: Remove all references to CONFIG_ETHADDR and friends 2015-05-19 13:33:21 -05:00
README.esbc_validate SECURE BOOT: Add command for validation of images 2015-03-05 12:04:59 -08:00
README.ext4 Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.falcon doc/README.falcon: Clarify steps slightly. 2014-07-07 19:42:34 -04:00
README.fdt-control env: export fdt_blob to the environment variable 2015-10-23 09:42:28 -06:00
README.fec_mxc Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.fsl-clk common/board_f.c: change the macro name and remove it for PPC platforms 2015-10-29 10:33:58 -07:00
README.fsl-ddr Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.fsl-dpaa armv8/ls1043a: Add Fman support 2015-10-29 10:34:01 -07:00
README.fsl-esdhc mmc: fsl_esdhc: Add adapter card type identification support 2015-05-04 09:25:19 -07:00
README.fsl-hwconfig powerpc/85xx: Specify hwconfig usage for USB controller 2011-07-11 13:24:20 -05:00
README.fsl-trustzone-components armv8: LS2080A: Rename LS2085A to reflect LS2080A 2015-11-30 08:53:04 -08:00
README.fsl_iim Add fsl_iim driver 2013-04-28 11:07:41 +02:00
README.fuse Add fuse API and commands 2013-04-28 11:07:40 +02:00
README.generic-board doc/README.generic-board: Trivial spell check 2015-05-27 13:35:55 -04:00
README.generic_usb_ohci rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.gpt part:efi: add bootable parameter in gpt command 2015-11-23 11:01:52 -05:00
README.Heterogeneous-SoCs powerpc/mpc85xx: Add DSP side awareness for Freescale Heterogeneous SoCs 2015-03-04 10:15:29 -08:00
README.hwconfig Cosmetic: Fix a number of typos, no functional changes. 2013-09-20 10:30:54 -04:00
README.i2c i2c: Add a mux for GPIO-based I2C bus arbitration 2015-08-05 21:06:10 -06:00
README.idma2intr * Patch by Arun Dharankar, 4 Apr 2003: 2003-04-05 00:53:31 +00:00
README.imx5 imx: fec: add MAC reading from eFuses to README 2015-09-02 15:34:11 +02:00
README.imx6 Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.imx25 imx: Document fuse assignments for MAC addresses 2013-04-28 11:07:44 +02:00
README.imx27 imx: Document fuse assignments for MAC addresses 2013-04-28 11:07:44 +02:00
README.imx31 move README.imx31 to doc/ and merge with README.mx31 2008-10-08 18:59:04 +02:00
README.imximage README.imximage: Fix the maximum DCD size 2014-09-11 10:14:04 +02:00
README.iomux Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
README.JFFS2 rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.JFFS2_NAND doc: Fix a typo in the description in doc/README.JFFS2_NAND 2013-10-07 08:21:13 -04:00
README.kconfig kconfig: switch to single .config configuration 2015-02-24 17:06:23 -05:00
README.kwbimage doc: fix documentation of out-of-tree build 2014-11-07 16:27:07 -05:00
README.LED Move lib_$ARCH directories to arch/$ARCH/lib 2010-04-13 09:13:03 +02:00
README.LED_display led_display: remove unused DISPLAY_MARK define 2010-10-21 22:25:04 +02:00
README.link-local net: cosmetic: Fix checkpatch.pl failures in net.c 2015-04-18 11:11:35 -06:00
README.lynxkdi rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.m68k Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.m54418twr ColdFire: Add Freescale MCF54418TWR ColdFire development board support 2012-10-24 22:27:46 +08:00
README.malta Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.marubun-pcmcia rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.memory-test Feature Removal: disable "mtest" command by default 2013-03-11 15:26:59 -04:00
README.menu Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.mips MIPS: remove obsolete TODO items 2013-07-24 09:51:05 -04:00
README.mpc5xx Move arch/ppc to arch/powerpc 2010-04-21 23:42:38 +02:00
README.mpc74xx Initial revision 2002-11-02 23:30:20 +00:00
README.mpc83xx.ddrecc mpc83xx: Correct the README for DDR ECC 2007-08-10 01:13:11 -05:00
README.mpc83xxads Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.mpc85xx spl/85xx: new SPL support 2012-11-26 15:41:25 -06:00
README.mpc85xx-sd-spi-boot powerpc: mpc85xx: Support booting from SD Card with SPL 2013-08-20 09:47:26 -07:00
README.mpc85xx-spin-table Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.mpc85xxads Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.mpc85xxcds Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.MPC866 rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.mxc_hab Fix mxc_hab documenation 2015-05-15 19:20:46 +02:00
README.mxc_ocotp arm: vf610: Add Vybrid VF610 to mxc_ocotp document 2013-06-03 10:56:54 +02:00
README.mxs Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.mxsimage ARM: mxs: tools: Add support for boot progress display flag 2014-11-20 10:13:45 +01:00
README.N1213 doc/README: documents and readme for NDS32 arch 2011-10-22 00:54:45 +02:00
README.nand Fix typo: commmand -> command. 2015-12-05 18:22:21 -05:00
README.nand-boot-ppc440 Fix some typos 2008-05-09 20:53:52 +02:00
README.NDS32 doc/README: documents and readme for NDS32 arch 2011-10-22 00:54:45 +02:00
README.ne2000 * Patches by Richard Woodruff, 01 Oct 2004: 2005-01-09 23:16:25 +00:00
README.NetConsole net: Make the netconsole buffer size configurable 2012-09-24 13:55:43 -05:00
README.nios2 nios2: change README.nios2 to use 10m50 as template 2015-11-12 08:26:59 +08:00
README.nokia_rx51 Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.odroid Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.OFT Code cleanup, especially MIPS for GCC 4.x 2005-12-04 00:40:34 +01:00
README.omap-reset-time ARM: OMAP5: Fix warm reset with USB cable connected 2013-05-10 08:25:55 -04:00
README.omap-ulpi-viewport usb: ulpi: Add omap-ulpi-view port support 2012-02-12 10:11:30 +01:00
README.omap3 arm: Remove omap3_mvblx board 2015-09-11 14:56:51 -04:00
README.pblimage powerpc/tool/pbl: fix pbl image compiling process 2013-10-16 16:13:13 -07:00
README.plan9 cmd_bootm: Add command line arguments to Plan 9 2013-06-26 10:25:22 -04:00
README.POST post/i2c: Add ability to ignore I2C devices 2010-10-22 02:19:14 -05:00
README.power-framework doc:power:pmic: Add doc entry for PMIC(v2) framework 2014-04-18 10:42:30 -04:00
README.ppc440 Remove unused CONFIG_SERIAL_SOFTWARE_FIFO feature 2010-09-23 09:02:05 +02:00
README.pxe Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.qemu-mips Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.ramboot-ppc85xx Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.rmobile arm: rmobile: Update README.rmobile 2013-12-18 16:35:45 +09:00
README.rockchip rockchip: Update the README 2016-01-21 20:42:37 -07:00
README.s5pc1xx s5pc1xx: update the README file 2010-04-03 15:24:26 -05:00
README.sata Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.sched * Patch by Arun Dharankar, 4 Apr 2003: 2003-04-05 00:53:31 +00:00
README.scrapyard Revive OpenRD targets 2015-11-10 15:04:21 +01:00
README.semihosting armv8: semihosting: add a command to load semihosted images 2015-03-28 12:07:45 -04:00
README.serial_multi rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.sh sh: Add support Renesas Solutions R7780MP 2008-03-28 14:16:12 +09:00
README.sh7752evb sh: add support for sh7752evb board 2012-12-20 13:20:17 +09:00
README.sh7753evb sh: add support for sh7753evb board 2013-12-18 16:49:08 +09:00
README.sha1 rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00
README.silent Allow u-boot to be silent without forcing Linux to be 2013-03-11 17:01:02 -04:00
README.SNTP doc: Fix some typos in different files 2012-03-27 13:31:37 +02:00
README.socfpga socfpga/dwmmc: Adding DesignWare MMC driver support for SOCFPGA 2014-01-09 11:53:55 +02:00
README.spear SPEAr: Add configuration options for spear3xx and spear6xx boards 2012-07-07 14:07:40 +02:00
README.SPL doc: Update documentation according to the EXT SPL support patch set 2014-10-27 17:54:08 -04:00
README.splashprepare splash_source: add support for filesystem formatted mmc 2015-11-16 12:01:35 +01:00
README.srio-pcie-boot-corenet powerpc/doc: Update the README.srio-pcie-boot-corenet 2013-06-20 17:08:47 -05:00
README.standalone Export redesign 2015-01-29 17:09:57 -07:00
README.t1040-l2switch drivers: net: vsc9953: Add LAG support 2016-01-28 12:22:19 -06:00
README.TPL kbuild: rename TOPDIR to stctree 2014-03-12 17:04:55 -04:00
README.trace Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.ubi Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.ublimage Minor coding style cleanup. 2011-09-11 21:24:09 +02:00
README.unaligned-memory-access.txt doc: Fix comparison operator 2014-10-27 11:04:00 -04:00
README.uniphier ARM: uniphier: document how-to-build for Ace and Sanji boards 2016-03-09 01:10:30 +09:00
README.update Fix typo: commmand -> command. 2015-12-05 18:22:21 -05:00
README.usb usb: net: update README.usb to list all USB ethernet options 2014-03-12 17:04:35 -04:00
README.vf610 arm: vf610: Add Vybrid VF610 CPU support 2013-06-03 10:56:53 +02:00
README.video Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
README.VLAN Patches by Pantelis Antoniou, 30 Mar 2004: 2004-04-15 21:48:45 +00:00
README.VSC3316-3308 board/freescale/common: VSC3316/VSC3308 initialization code 2012-10-22 14:31:21 -05:00
README.vxworks doc: Complement document about booting VxWorks 2015-10-21 07:46:26 -06:00
README.watchdog arm: Remove vision2 board 2015-09-11 16:05:03 -04:00
README.x86 x86: Add a script to aid code conversion from coreboot 2016-03-17 10:27:23 +08:00
README.zfs Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
README.zynq ARM: zynq: add separate configuration for ZC702 and ZC706 2015-05-25 10:52:35 +02:00

#
# 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