Commit graph

746 commits

Author SHA1 Message Date
Alexander Graf
ae5326a6b3 serial: Make full device search optional
Commit 608b0c4ad4 ("serial: Use next serial device if probing fails")
added code to search for more serial devices if the default one was not
probed correctly.

Unfortunately, that breaks omap3_evm. So while investigating why that is
the case, let's disable the full search for everyone but bcm283x where it
is needed.

Fixes: 608b0c4ad4 ("serial: Use next serial device if probing fails")
Reported-by: Derald D. Woods <woods.technical@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-29 08:18:02 -05:00
Alexander Graf
6001985f92 bcm2835_pl011_serial: Add BCM2835 specific serial driver
On bcm2835 we need to ensure we only access serial devices that are
muxed to the serial output pins of the pin header. To achieve this
for the pl011 device, add a bcm2835 specific pl011 wrapper device
that does this check but otherwise behaves like a pl011 device.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:36 -05:00
Alexander Graf
fa4875942a bcm2835_mu_serial: Convert to Kconfig
Setting config options using headers is deprecated. This patch converts
the BCM2835 Mini-UART to Kconfig.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:36 -05:00
Alexander Graf
cf2c7784bd pl01x: Convert CONFIG_PL01X_SERIAL to Kconfig
We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl01x.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:35 -05:00
Alexander Graf
d10fc50f78 pl011: Convert CONFIG_PL011_SERIAL to Kconfig
We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl011.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:35 -05:00
Alexander Graf
884f901368 pl010: Convert CONFIG_PL010_SERIAL to Kconfig
We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl010.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:35 -05:00
Alexander Graf
b31116308c pl01x: Convert to dev_read
The fdtdec API is deprecated, convert the pl010 and pl011 devices to
use the dev_read API instead.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:34 -05:00
Alexander Graf
9dfeffe2f9 serial_bcm283x_mu: Fail loading if not muxed
The bcm283x mini-uart is only really usable as U-Boot serial output
when it is muxed to the UART pins of the RPi pin header.

So fail probing in case it is not muxed correctly, as in that case
firmware did not initialize it properly either.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:34 -05:00
Alexander Graf
bceab8d569 serial_bcm283x_mu: Always skip init
The serial initialization doesn't always quite work for me, so let's
always skip it for now. We know that firmware on the RPi initializes
us properly already.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:34 -05:00
Alexander Graf
80d5001c30 serial_bcm283x_mu: Convert to dev_read
The fdtdec API got deprecated in favor of dev_read calls.
Use those instead.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:34 -05:00
Alexander Graf
fc8523a147 serial: bcm283x_mu: Remove support for post-init disabling
We are switching to a model where a serial device doesn't even get probed when
it's not muxed properly, so we don't need device specific disabling
functionality anymore.

Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28 12:27:33 -05:00
Alexander Graf
608b0c4ad4 serial: Use next serial device if probing fails
Currently our serial device search chokes on the fact that the serial
probe function could fail. If it does, instead of searching for the next
usable serial device, it just quits.

This patch changes the fallback logic so that even when a serial device
was not probed correctly, we just try the next ones until we find one that
works.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-01-28 12:27:33 -05:00
Mario Six
4dbf9bed18 serial: ns16550: Fix style violation
Clarify the computation precedence in two ternary operator
constructions.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-01-28 09:36:28 -05:00
Tom Rini
9c486e7cb0 Merge branch 'rmobile-mx' of git://git.denx.de/u-boot-sh 2018-01-27 18:25:00 -05:00
Tom Rini
1d12a7c8cd Merge git://git.denx.de/u-boot-spi 2018-01-26 07:46:34 -05:00
Chris Brandt
8591ac8b16 serial: sh: Add support for R7S72100 (RZ/A1)
Add support for RZ/A1 series SoCs.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
2018-01-24 23:27:21 +01:00
Marek Vasut
a6e25b2e12 serial: sh: Unify CONFIG_R8A779[01234] as CONFIG_RCAR_GEN2
Use the common RCAR_GEN2 config option instead of enumerating
each SoC and having a lengthy ifdef clause. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2018-01-24 23:27:21 +01:00
Marek Vasut
c493756ab4 serial: sh: Replace fdtdec_get_addr() with devfdt_get_addr()
Replace fdtdec_get_addr() with devfdt_get_addr() as the later one is
the current recommended practice.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2018-01-24 23:27:21 +01:00
Álvaro Fernández Rojas
48263504c8 wait_bit: use wait_for_bit_le32 and remove wait_for_bit
wait_for_bit callers use the 32 bit LE version

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-01-24 12:03:43 +05:30
Patrice Chotard
ae74de0dfd serial: stm32: Rename serial_stm32x7.c to serial_stm32.c
Now this driver is used across stm32f4, stm32f7 and stm32h7
SoCs family, give it a generic name.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2018-01-19 15:49:32 -05:00
Sriram Dash
a2bbfc5480 serial: lpuart: Proper device identification
Identify and distinguish between platform device type of MX7ULP
and LS1021A.

This is a fix to commit 7edf5c45("serial: lpuart: add i.MX7ULP
support").

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2018-01-15 12:44:09 -08:00
Patrice Chotard
2d18d72858 board: stm32f429-disco: switch to DM STM32 serial driver
Remove serial_stm32.c driver and uart init from board file,
use available DM serial_stm32x7.c driver compatible for
STM32F4/F7 and H7 SoCs.

The serial_stm32x7.c driver will be renamed later with a more
generic name as it's shared with all STM32 Socs.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-01-10 08:05:46 -05:00
Marek Vasut
167ee838df serial: sh: Unify R8A7795 and R8A7796 as Gen3
Unify the CONFIG_R8A7795 and CONFIG_R8A7796 as CONFIG_RCAR_GEN3
so that every time we add a new SoC, we won't have to add more
stuff to this list.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-11-30 02:32:34 +01:00
Michal Simek
809704eb4f arm: zynq: Move ZYNQ_SERIAL to Kconfig
Move cadence/zynq serial driver via Kconfig

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-28 16:08:45 +01:00
Wilson Lee
b12907f279 serial: nulldev: Implement "pending" function to fix tstc return "true"
In U-boot, serial_tstc was use to determine is there have a character in
serial console that pending for read. If there is no "pending" function
implemented in serial driver, the serial-uclass will return "true(1)"
to indicate there have a character pending to read.

Thus, read a character from nulldev serial will result in continuous
getting -EAGAIN return which might lead system to hang.

This commit is to fix a bug in nulldev serial which implement "pending"
function in nulldev serial to always indicate there is no character in
console that pending for read.

Signed-off-by: Wilson Lee <wilson.lee@ni.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Keng Soon Cheah <keng.soon.cheah@ni.com>
Cc: Chen Yee Chew <chen.yee.chew@ni.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
2017-11-17 07:44:13 -05:00
Patrice Chotard
3bc599c956 stm32: fix STMicroelectronics copyright
Uniformize STMicroelectronics copyrights headers for STM32
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-11-06 09:51:01 -05:00
Patrice Chotard
fb48bc448c sti: fix STMicroelectronics copyright
Uniformize all STMicroelectronics copyrights headers for STi
related code.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-11-06 09:51:01 -05:00
Heinrich Schuchardt
c409336dac usbtty: fix typos
Fix typos in USB tty driver.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-10-16 09:42:51 -04:00
Tom Rini
2ee87b0c1a Merge branch 'rmobile' of git://git.denx.de/u-boot-sh 2017-10-10 20:14:38 -04:00
Patrice Chotard
9a212d7f55 serial: stm32x7: remove useless CONFIG_CLK and OF_CONTROL flag
This driver is currently used by STM32F7 and STM32H7 SoCs.
As CONFIG_CLK and OF_CONTROL flags are set by default for these
2 SoCs, this flag becomes useless in this driver, so remove it.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-08 16:19:56 -04:00
Patrice Chotard
6c30f15bf1 serial: stm32x7: add STM32F4 support
stm32f4 doesn't support FIFO and OVERRUN feature.
The enable bit is not at the same location in CR1
register than for STM32F7 and STM32H7.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-08 16:19:56 -04:00
Patrice Chotard
2a7ecc5360 serial: stm32x7: add fifo support for STM32H7
Add fifo mode support for rx and tx.
As only STM32H7 supports this feature, add has_fifo flag
to uart configuration to use fifo only when possible.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-08 16:19:56 -04:00
Patrice Chotard
60a996bacb serial: stm32x7: prepare the ground to STM32F4 support
STM32F4 serial IP is similar to F7 and H7, but registers
are not located at the same offset and some feature are
only supported by F7 and H7 version.

Registers offset must be added for each version and also
some flags indicated the supported feature.

Update registers name to match with datasheet (sr to isr,
rx_dr to rdr and tx_dr to tdr) and remove unused regs
(cr2, gtpr, rtor, and rqr).

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2017-10-08 16:19:56 -04:00
Patrice Chotard
75d5853ffc serial: stm32x7: remove stm32f7-usart and stm32h7-usart compatible
This patch remove the extra compatibility string "st,stm32h7-usart"
and "st,stm32f7-usart" to avoid confusion, save some time & space.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2017-10-08 16:19:56 -04:00
Patrice Chotard
2a52a9527a serial: stm32x7: cleanup code
Use BIT() macro and GENMASK() macro

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2017-10-08 16:19:56 -04:00
Marek Vasut
791c174d58 serial: sh: Enable clock if available
If the clock framework provides the driver with valid clock,
enable them, otherwise the SCIF might not work if the clock
are not enabled prior to the driver probe.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-09-24 14:12:07 +09:00
Patrice Chotard
776b2ddbfa serial: stm32x7: add STM32H7 support
STM32F7 and STM32H7 shares the same UART block, add
STM32H7 compatible string.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-22 07:40:01 -04:00
Keng Soon Cheah
cac73f20ac serial: nulldev: Add nulldev serial driver
Some device the serial console's initialization cannot run early during
the boot process. Hence, nulldev serial device is helpful on that
situation.

For example, if the serial module was implemented in FPGA. Serial
initialization is prohibited to run until the FPGA was programmed.

This commit is to adding nulldev serial driver. This will allows the
default console to be specified as a nulldev.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Keng Soon Cheah <keng.soon.cheah@ni.com>
Cc: Chen Yee Chew <chen.yee.chew@ni.com>
2017-09-13 09:24:24 -04:00
Stefan Roese
3ca7a06afb serial: serial-uclass: Add generic serial RX buffer support
Pasting longer lines into the U-Boot console prompt sometimes leads to
characters missing. One problem here is the small 16-byte FIFO of the
legacy NS16550 UART, e.g. on x86 platforms.

This patch now introduces a Kconfig option to enable RX buffer support
for all DM based serial drivers. With this option enabled, I was
able paste really long lines into the U-Boot console, without any
characters missing.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-24 11:00:47 +08:00
Stefan Roese
7fded0ce0f Revert "serial: ns16550: Add RX interrupt buffer support"
This reverts commit 6822cf3ec7.

As Bin Meng has tested and pointed out, we don't need the RX interrupt
for the RX buffer support at all. Just reading all available characters
into a buffer is sufficient to solve the problem with the dropped
characters upon long lines pasted into the U-Boot prompt. Since this
RX buffer support can be implemented in a generic way, without any
device specifica (e.g. for the ns16550), I'll post a new patch with
a new serial RX buffer support for DM, which all DM based serial
drivers can use.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-08-24 11:00:47 +08:00
Simon Glass
00caae6d47 env: Rename getenv/_f() to env_get()
We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:24 -04:00
Marek Vasut
8171499df9 serial: sh: Use the clock framework to obtain clock config
Since we now have clock driver on the RCar Gen3 , obtain the clock
configuration using the clock framework functions. In case this
fails, fall back to the original code for pulling the clock config
directly out of OF.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-08-03 04:26:25 +09:00
Marek Vasut
03a38a3972 serial: sh: Convert to Kconfig
Convert the SH Serial to Kconfig using tools/moveconfig.py tool
and a bit of manual adjustment to cater for failed conversions.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-08-03 04:26:24 +09:00
Simon Glass
7b3c4c3a53 dm: console: Check for serial devices properly
With driver model the serial device is often not called "serial". Mark
driver-model stdio devices so that they can be detected and we can look up
the uclass. This is a more reliable way of finding out whether the console
is connected to a serial device or not.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-07-31 12:21:40 -04:00
Patrice Chotard
84e9dcc120 serial: stm32x7: Convert CONFIG_STM32X7_SERIAL to Kconfig
Add CONFIG_STM32X7_SERIAL as a Kconfig option.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
2017-07-31 11:22:54 -04:00
Andy Yan
f1896c45cb spl: make SPL and normal u-boot stage use independent SYS_MALLOC_F_LEN
Some platforms have very limited SRAM to run SPL code, so there may
not be the same amount space for a malloc pool before relocation in
the SPL stage as the normal U-Boot stage.

Make SPL and (the full) U-Boot stage use independent SYS_MALLOC_F_LEN,
so the size of pre-relocation malloc pool can be configured memory
space independently.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[fixed up commit-message:]
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-07-27 14:59:03 +02:00
Patrice Chotard
27265cee76 serial: stm32x7: add clk_get_rate() support
Replace proprietary clock_get() by clk_get_rate()
The stm32x7 serial driver is now "generic" and can be used
by other STM32 SoCs.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
2017-07-26 11:28:08 -04:00
Patrice Chotard
122b2d4763 serial: stm32x7: migrate serial struct to driver
This allow to remove include/dm/platform_data/serial_stm32x7.h
which was included in the past by stm32x7 driver and by
stm32f746-disco.c board file.
Since patch 42bf5e7c27 "serial: stm32f7: add device tree support"
this file is no more needed in board file.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
2017-07-26 11:26:54 -04:00
Stefan Roese
6822cf3ec7 serial: ns16550: Add RX interrupt buffer support
Pasting longer lines into the U-Boot console prompt sometimes leads to
characters missing. One problem here is the small 16-byte FIFO of the
legacy NS16550 UART, e.g. on x86 platforms.

This patch now introduces a Kconfig option to enable RX interrupt
buffer support for NS16550 style UARTs. With this option enabled, I was
able paste really long lines into the U-Boot console, without any
characters missing.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
[trini: Guard ns16550_serial_remove with
CONFIG_IS_ENABLED(SERIAL_PRESENT) to match struct assignment]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-07-23 17:04:46 -04:00
Christophe Leroy
72281c5c46 powerpc: Remove 8260 remainders
commit 2eb48ff7a2 ("powerpc, 8260: remove support for mpc8260")
removed support for 8260 CPU.

This patch remove some remainders.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
2017-07-23 09:24:47 -04:00