Commit Graph

59584 Commits

Author SHA1 Message Date
Adam Ford
51cd1e2373 ARM: da850-evm: Enable SPI Flash and NAND Flash when booting NOR
Historically there have been various boot options, SPI flash,
NAND or NOR. The NOR flash is mutually exclusive with MMC, but
it isn't mutually exclusive with NAND or SPI Flash, so this patch
enables both NAND flash and SPI Flash when booting from NOR.

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-08-12 13:33:42 -04:00
Adam Ford
79bb64678c ARM: da850-evm: Enable filesystem commands when booting from NOR
The configuration with NOR is mutually exclusive with MMC, and as
such, the filesystem commands were disabled.  With the USB host
enabled, this patch enables the file system command which can
be executed on storage devices attached to the USB.

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-08-12 13:33:42 -04:00
Adam Ford
d2c30190ee ARM: da850-evm: Increase environment NOR partition offset
The current size allocated to U-Boot is 384k, but U-Boot has grown
to 436K which means that saving the environmental variables wipes
out part of the U-Boot source and the board ceases to function.
Due to the sector and erase size for the NOR part and a desire to
not have to change partition sizes often, this patch moves the
U-Boot environmental variables to an offset of 1M so saveenv
does not brick the board.  This patch also sets up MTDIDS and
MTDPARTS to clearly show where U-Boot and U-Boot's environmental
variables are located.

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-08-12 13:33:42 -04:00
Adam Ford
66e2637b19 ARM: da850-evm: Fix Lowlevel init
A previous patch for enabling the NAND config set a flag called
CONFIG_SKIP_LOWLEVEL_INIT when it should have been called
CONFIG_SKIP_LOWLEVEL_INIT_ONLY.  The affect this had was creating
a delay on startup for the NOR version which is XIP and doesn't have
SPL, so the lowlevel initialization functions need to operate.
This delay was not really noticeable at first, but the delays have been
getting longer, finally reached the point of nearly seven seconds
before the board would appear to start.

This patch sets the CONFIG_SKIP_LOWLEVEL_INIT_ONLY instead which means
"The normal CP15 init (such as enabling the instruction cache) is still
performed" per the README.  It doesn't appear to have any adverse
behavior on the SPI Flash or the NAND flash boards which use SPL.

Fixes: 93f3362762 ("ARM: configs: Add da850evm_nand to boot from NAND")

Signed-off-by: Adam Ford <aford173@gmail.com>
2019-08-12 13:33:41 -04:00
Sekhar Nori
36de3b0668 configs: am65x_evm_a53: enable support for PCIe ethernet cards
Enable support for Intel E1000 based PCIe ethernet cards that
can be used to test PCIe RC functionality on AM65x EVM.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:41 -04:00
Sekhar Nori
476e991452 arm: dts: k3-am65: add support for PCIe and SERDES
Add needed device-tree nodes to support PCIe 0
and SERDES on AM65x SoC. The nodes are kept
disabled by default.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:40 -04:00
Sekhar Nori
e0598c4584 configs: am65x_evm_a53: enable PCIe support
Enable support for PCIe and related configurations
on AM654 EVM platform.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:40 -04:00
Sekhar Nori
888e1caeae phy: add support for AM654x SERDES
Add a new SERDES driver for TI's AM654x SoC which configures
the SERDES only for PCIe. Support fo USB3 can be added later.

SERDES in am654x has three input clocks (left input, external
reference clock and right input) and two output clocks (left
output and right output) in addition to a PLL mux clock which
the SERDES uses for Clock Multiplier Unit (CMU refclock).

The PLL mux clock can select from one of the three input
clocks. The right output can select between left input and
external reference clock while the left output can select
between the right input and external reference clock.

The driver has support to select PLL mux and left/right output
mux as specified in device tree.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:39 -04:00
Sekhar Nori
03c396bb5f pcie: ti: add driver for AM65x PCIe RC
Add driver supporting PCIe root-complex available
on TI's AM65x SoC.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:39 -04:00
Sekhar Nori
f5b904796f dm: core: add support for getting register address and size
Current dev_read_*() API lacks support to get address and size
of a "reg" property by name or index. Add support for the same.

Livetree support has been added but not tested on real hardware.

The existing unit tests testing reading address from device-tree
have been updated to test address as well as size.

Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:39 -04:00
Sekhar Nori
acbb7cd4d3 clk: add support for clk_is_match()
Add support for clk_is_match() which is required to
know if two clock pointers point to the same exact
physical clock.

Also add a unit test for the new API.

Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-08-12 13:33:38 -04:00
Nishanth Menon
71cd80af86 power: domain: ti-sci-power-domain: Add device ID info to get/set_device failure
Failure log for ti_sci_power_domain_on/off is as below:
"ti_sci_power_domain_on: get/set_device failed (-19)"

The above information is useless for debug without information
on what specific device access failed. So add that information as well.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2019-08-12 13:33:38 -04:00
Hannes Schmelzer
60df809f62 board/BuR/brsmarc1: initial commit
This commit adds support for the B&R brsmarc1 SoM.

The SoM is based on TI's AM335x SoC.
Mainly vxWorks 6.9.4.x is running on the board,
doing some PLC stuff on various carrier boards.

Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
2019-08-12 13:33:37 -04:00
Suniel Mahesh
6912f2a8ae watchdog: omap_wdt: Disable DM watchdog support in SPL
This patch disables DM watchdog support for SPL builds and uses
the legacy omap watchdog driver on TI AM335x chipsets.

The following build error is reported if DM watchdog support was
enabled in SPL:

  CC      spl/drivers/usb/gadget/rndis.o
  LD      spl/drivers/usb/gadget/built-in.o
  LD      spl/drivers/usb/musb-new/built-in.o
  LD      spl/drivers/built-in.o
  LD      spl/u-boot-spl
arm-linux-ld.bfd: u-boot-spl section .u_boot_list will not fit in region .sram
arm-linux-ld.bfd: region .sram overflowed by 440 bytes
make[1]: *** [spl/u-boot-spl] Error 1
make: *** [spl/u-boot-spl] Error 2

Adjusted WATCHDOG_RESET macro accordingly. Earlier it was pointing
to hw_watchdog_reset. Since CONFIG_WATCHDOG replaces CONFIG_HW_WATCHDOG,
now WATCHDOG_RESET macro points to watchdog_reset. This watchdog_reset
is not defined anywhere for am33xx/omap2 and needs to be defined. Fixed
this by simply calling hw_watchdog_reset in watchdog_reset.

Built and tested on AM335x device (BeagleboneBlack), compile tested for
all other AM33xx/omap2 based boards.

Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
[trini: Fix watchdog.h logic]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-12 13:27:55 -04:00
Marek Behún
193a1e9f19 pci: pci_mvebu: set BAR0 after memory space is set
The non-DM version of this driver used to set BAR0 register after the
calls to pci_set_region.
I found out that for some strange reason the ath10k driver in kernel
fails to work if this is done the other way around.
I know that Linux's driver should not depend on how U-Boot does things,
but for some strange reason it does and this seems to be the simplest
solution. Fix it since it caused regressions on Omnia.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Stefan Roese <sr@denx.de>
Cc: Dirk Eibach <dirk.eibach@gdsys.cc>
Cc: Mario Six <mario.six@gdsys.cc>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Phil Sutter <phil@nwl.cc>
Cc: VlaoMao <vlaomao@gmail.com>
Tested-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 13:59:31 +02:00
Suniel Mahesh
7659ea32a6 watchdog: omap_wdt: Convert watchdog driver to use DT and DM
This patch adds device tree and driver model watchdog support,
converts the legacy omap watchdog driver to driver model for
TI AM335x chipsets. The following compile warning is removed:

===================== WARNING ======================
This board does not use CONFIG_WDT (DM watchdog support).
Please update the board to use CONFIG_WDT before the
v2019.10 release.
Failure to update by the deadline may result in board removal.
See doc/driver-model/MIGRATION.txt for more info.
====================================================

CONFIG_HW_WATCHDOG is no more a default option for AM33XX devices
after DT/DM conversion, adjusted kconfig accordingly.

DM watchdog support is enabled by default in SPL. The SPL image
doesn't fit into SRAM because of size constraints and build breaks
with an overflow. For this reason DM watchdog support should be
disabled in SPL, driver code should be adjusted accordingly to serve
this purpose.
Built and tested on AM335x device (BeagleboneBlack), compile tested
for all other AM33xx based boards.

Signed-off-by: Suniel Mahesh <sunil.m@techveda.org>
2019-08-12 07:25:22 -04:00
Anselm Busse
2800bb155b ARM: omap3: overo: Fix MMC init for SPL
The SPL for the Overo board does not initialise the MMC. Hence, it
cannot load the main boot loader from the SD card susequently. This
patch moves the initialisation code for the MMC so it gets included in
the SPL.

[trini: Add missing header]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-12 07:24:29 -04:00
Neil Armstrong
eb1677250d configs: sei510: disable PSCI_RESET to support fastboot reboot_flag
Disable the PSCI_RESET reboot handler to permit handling the reboot
flag and calling the PSCI handler with the flag in parameter.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:05:10 +02:00
Neil Armstrong
9a34dedfae ARM: meson: Add support for fastboot_set_reboot_flag()
Add support for fastboot_set_reboot_flag() by storing the reboot
flag in the common code to be used by the custom PSCI reboot handler.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:05:10 +02:00
Jerome Brunet
0998367515 boards: meson: add g12a sei510
The SEI510 board is based on the Amlogic S905X2 SoC
from the Amlogic G12A SoC family.

The board has the following specifications :
- Amlogic S905X2 ARM Cortex-A53 quad-core SoC
- XGB DDR4 SDRAM
- 10/100 Ethernet (Internal PHY)
- 1 x USB 3.0 Host
- eMMC
- SDcard
- Infrared receiver
- SDIO WiFi Module

The board default behaviour is for booting Android and triggers
fastboot on recovery or reboot mode.

USB vendor ID (used by fastboot) is 0x18d1 (Google) for
default udev rules for existing android users work out of the box.

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:04:03 +02:00
Neil Armstrong
b1dd7debea arm: meson: add sm command to retrieve the reboot reason
The Secure Monitor offers multiple services, like returning the
SoC unique serial number, and can provide the "reboot reason" as
set by the previous booted system.

This extends the Amlogic specific "sm" cmd with a "reboot_reason" subcommand
to print or set a specified environment variable with the reboot reason in
human readable format.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:02:30 +02:00
Neil Armstrong
559e6256f8 arm: meson: add sm cmd to retrieve SoC serial
The Secure Monitor offers multiple services, like returning the
SoC unique serial number, already used to generate an unique MAC
address.

This adds a new, Amlogic specific, "sm" cmd with a "serial" subcommand
to write the SoC unique serial to memory.

This "cm" command will be extended in further patches.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:02:30 +02:00
Neil Armstrong
191a374e65 configs: meson64: permit redefining ENV_SIZE
Permit redefining ENV_SIZE for board specific configs.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:02:30 +02:00
Neil Armstrong
cddca4b4ca ARM: dts: Import Amlogic G12A SEI510 DT from Linux 5.3-rc1
Import Linux 5.2-rc1 sei510 DT from 5f9e832c1370 ("Linus 5.3-rc1") for the
meson-g12a-sei510 board.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2019-08-12 10:02:30 +02:00
Marek Behún
6de5a717c7 arm: mvebu: turris_omnia: update defconfig
Add Macronis SPI flash support - some Omnia routers are shipped with
this SPI flash chip.
Also add the memtest command to defconfig.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Chris Packham
9921179278 ARM: configs: Enable DM_ETH for SBx81LIFKW and SBx81LIFXCAT
The mvgbe driver supports DM_ETH so switch these boards to using it.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Holger Brunck
00f9baf8eb powerpc/km: remove unmaintained board KMLION1
This board is unmaintained and can be removed. This also allows us to
remove kmp204x-common.h and integrate it in kmp204x.h.

Signed-off-by: Valentin Longchamp <valentin.longchamp@ch.abb.com>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Holger Brunck
7b472733d8 powerpc/km: remove unmaintained target KMVECT1
Signed-off-by: Valentin Longchamp <valentin.longchamp@ch.abb.com>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
1bd17b9f7b km/arm: remove unmaintained target PORTL2
Remove the PORTL2 board and all its dependencies as it is no longer
supported by the company.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
abbaa8ed14 km/rgmii: port Ethernet interface of KM Kirkwood boards to driver model
Activate the driver model for the Ethernet interface (RGMII) in the KM
Kirkwood Kconfig file. Additionally, raise the auto negotiation timeout
to eight seconds as more time is required for those boards.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
b75e9e3fce km/uart: port UART interface of KM Kirkwood boards to driver model
Activate the driver model for the serial interface in the KM Kirkwood
Kconfig file. The associated preprocessor definitions could be removed
from the header file. However, the clock of 200 MHz needs to be declared
in the device tree.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
9db6bff8b5 km: fixed typo in KM Kirkwood header file
A typo in the km_kirkwood.h header prevented to undefine the initialization
of the Kirkwood PCIe interface.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
e5c9e830b8 km: clean up header files for KM Kirkwood boards
Remove unused preprocessor definitions and comments of already eliminated
code.

The Ethernet driver configuration is already declared in
arch/arm/mach-kirkwood/include/mach/config.h and, therefore, superfluous.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
432579c4d1 km: remove obsolete definitions in KM header files
After moving the KM specific configurations to Kconfig, the associated
preprocessor definitions can now be removed in the headers. Moreover, the
whitelist has been adapted correspondingly.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Pascal Linder
707f06f331 km: add Kconfig menus for KM boards
To execute the conversion away from board specific header files, Kconfig
menus have been implemented for all KM boards and additionally for those
having an ARM architecture.

For the moment, the preprocessor definitions stay in the headers. The
boolean types, however, needed a modification (#define CONFIG_* 1).

The default configuration files of some boards required an update in order
to not change the currently defined values of the configurations.

Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2019-08-12 09:12:38 +02:00
Simon Glass
ec1fa18561 common: Add a note about the effort to reduce common.h
This file has quite a lot of general definitions and include files. Add a
note about our intent to remove more of this.

The file should ultimately include the configuration and perhaps a very
other very common things used by most U-Boot files.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 19:27:41 -04:00
Simon Glass
9e5616dea9 Drop PCMCIA
This is no-longer used in U-Boot and has not been converted to driver
model. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 19:27:41 -04:00
Simon Glass
f3998fdc4d env: Rename environment.h to env_internal.h
This file contains lots of internal details about the environment. Most
code can include env.h instead, calling the functions there as needed.

Rename this file and add a comment at the top to indicate its internal
nature.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Fixup apalis-tk1.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-11 19:27:31 -04:00
Simon Glass
e7dcf5645f env: Drop environment.h header file where not needed
This header file is now only used by files that access internal
environment features. Drop it from various places where it is not needed.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
f030b7b260 env: Move TOTAL_MALLOC_LEN to environment.h
This declaration is only used in three files. Although it relates to
malloc() it is actually only used during malloc() init. It uses CONFIG
options including CONFIG_ENV_ADDR which are defined only in environment.h
so this header must be included anyway, for TOTAL_MALLOC_LEN to be
correct.

Nove it to environment.h to simplify the common file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2019-08-11 16:43:41 -04:00
Simon Glass
cb2ba9db5f env: Drop the double underscores in search.h
There doesn't seem to be any good reason for using __ in the arguments in
this header file. A double underscore is usually reserved for compiler
features.

Drop these and remove the unnecessary 'extern' as well.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
3f0d680745 env: Drop the ACTION typedef
Avoid using a typedef here which is unnecessary. Add an 'env_' prefix to
both the enum and its members to make it clear that these are related to
the environment.

Add an ENV prefix to these two flags so that it is clear what they relate
to. Also move them to env.h since they are part of the public API. Use an
enum rather than a #define to tie them together.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
d3716dd64b env: Rename the redundancy flags
Add an ENV prefix to these two flags so that it is clear what they relate
to. Also move them to env.h since they are part of the public API. Use an
enum rather than a #define to tie them together.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
25e51e90fe env: Drop _ENTRY
This typedef does not need to be defined in the search.h header since it
is only used in one file (hashtable.c). Remove it from the header and
change it to a struct.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
dd2408cac1 env: Drop the ENTRY typedef
U-Boot is not supposed to use typedef for structs anymore. Also this name
is the same as the ENTRY() macro used in assembler files, and 'entry'
itself is widely used in U-Boot (>8k matches).

Drop the typedef and rename the struct to env_entry to reduce confusion.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
02cf933428 env: Move callback definitions to env.h
These definitions are effectively part of the 'public' API of the
environment implementation since they do not require access to any
internal variables. Move them to the env.h header.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
db19701039 env: Move env_valid to env.h
This enum is somewhat widely used to determine if the environment is valid
or not. Move it to the common environment header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
be54ec1624 env: Rename environment to embedded_environment
The name 'environment' is widely used in U-Boot so is not a very useful
name of a variable. Rename it to better indicate its purpose.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2019-08-11 16:43:41 -04:00
Simon Glass
c62f62b0fc env: Move env_reloc() to env.h
Move env_reloc() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
b5f449e8e9 env: Move env_get_char() to env.h
Move env_get_char() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00