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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 <[email protected]>
Signed-off-by: Keng Soon Cheah <[email protected]>
Cc: Chen Yee Chew <[email protected]>
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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 <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Bin Meng <[email protected]>
Cc: Tom Rini <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Tested-by: Bin Meng <[email protected]>
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This reverts commit 6822cf3ec7c8768b8727573b8f4b2cb3d870b881.
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 <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Bin Meng <[email protected]>
Cc: Tom Rini <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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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 <[email protected]>
Signed-off-by: Simon Glass <[email protected]>
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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 <[email protected]>
Cc: Nobuhiro Iwamatsu <[email protected]>
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
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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 <[email protected]>
Cc: Nobuhiro Iwamatsu <[email protected]>
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
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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 <[email protected]>
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Add CONFIG_STM32X7_SERIAL as a Kconfig option.
Signed-off-by: Patrice Chotard <[email protected]>
Reviewed-by: Vikas Manocha <[email protected]>
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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 <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
Acked-by: Philipp Tomsich <[email protected]>
Reviewed-by: Philipp Tomsich <[email protected]>
[fixed up commit-message:]
Signed-off-by: Philipp Tomsich <[email protected]>
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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 <[email protected]>
Acked-by: Vikas MANOCHA <[email protected]>
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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 <[email protected]>
Acked-by: Vikas MANOCHA <[email protected]>
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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 <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Cc: Bin Meng <[email protected]>
[trini: Guard ns16550_serial_remove with
CONFIG_IS_ENABLED(SERIAL_PRESENT) to match struct assignment]
Signed-off-by: Tom Rini <[email protected]>
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commit 2eb48ff7a210d ("powerpc, 8260: remove support for mpc8260")
removed support for 8260 CPU.
This patch remove some remainders.
Signed-off-by: Christophe Leroy <[email protected]>
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Add support for the debug UART to assist with early debugging.
Enable it for i.CoreM6 as an example.
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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- Remove space between #define to macro
- Add tab between macro and value
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Move the common baud generation code into _mxc_serial_setbrg
so-that dm and non-dm can call this func.
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Move the common initialization code into _mxc_serial_init
so-that dm and non-dm can call this func.
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Control reg write should be part of setbrg for better
buadrate generation, so move cr1 and cr2 write to
mxc_serial_setbrg
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Use RFDIV in dm-code instead of numeric value, so-that
it can be common for dm and non-dm.
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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This patch will add common reg space for non-dm and
dm code and non-dm reg space can be accessed using
mxc_base.
This will
- get rid of __REG volatile assignments
- Make common reg_space by removing unneeded macros
Signed-off-by: Jagan Teki <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add support for a live device tree to the core serial uclass.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Marcel Ziswiler <[email protected]>
Tested-on: Beaver, Jetson-TK1
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This function is quite long. Move the core code into a separate function
in preparation for adding livetree support.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Marcel Ziswiler <[email protected]>
Tested-on: Beaver, Jetson-TK1
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Update this driver to support a live device tree.
Signed-off-by: Simon Glass <[email protected]>
Tested-by: Marcel Ziswiler <[email protected]>
Tested-on: Beaver, Jetson-TK1
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With the new dev_read functions available, we can convert the rockchip
architecture-specific drivers and common drivers used by these devices
over to the dev_read family of calls.
This covers the serial driver (ns16550 and compatible) used for the
Rockchip devices.
Signed-off-by: Philipp Tomsich <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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At the same time, move to Kconfig
Signed-off-by: Christophe Leroy <[email protected]>
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Add missing static to serial_stub_puts().
Unexport serial_stub_{getc,tstc} because they are used locally.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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fix menutext for the options SPL_DM_SERIAL and TPL_DM_SERIAL.
Both have the same text as DM_SERIAL, which is
confusing.
Signed-off-by: Heiko Schocher <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
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we removed 5xx support. So delete some forgotten remains.
Signed-off-by: Heiko Schocher <[email protected]>
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we removed 82xx support. Missed some 82xx remains,
remove them now.
Signed-off-by: Heiko Schocher <[email protected]>
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There was for long time no activity in the mpx5xxx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in mpc5xxx,
so remove it.
Signed-off-by: Heiko Schocher <[email protected]>
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Simplify baud rate register formula and use the oversampling
uart feature.
This code is aligned with what is implemented in kernel driver
drivers/tty/serial/stm32-usart.c since kernel v4.9.
Signed-off-by: Patrice Chotard <[email protected]>
Reviewed-by: Christophe KERELLO <[email protected]>
Reviewed-by: Patrick DELAUNAY <[email protected]>
Acked-by: Vikas MANOCHA <[email protected]>
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stm32x7.c driver is dedicated for STM32F7.
In kernel, "st,stm32-usart" and "st,stm32-uart" compatible
strings are dedicated for STM32F4.
To keep U-boot and kernel aligned, replace the serial compatible
string from "st,stm32-usart", "st,stm32-uart" to
"st,stm32f7-usart", "st,stm32f7-uart" specific for STM32F7.
Signed-off-by: Patrice Chotard <[email protected]>
Reviewed-by: Christophe KERELLO <[email protected]>
Reviewed-by: Patrick DELAUNAY <[email protected]>
Acked-by: Vikas MANOCHA <[email protected]>
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With overrun enabled, serial port console freezes & stops receiving data with
overun error if we keep sending data.
Signed-off-by: Vikas Manocha <[email protected]>
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Adjust this function to use an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.
Signed-off-by: Simon Glass <[email protected]>
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At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <[email protected]>
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It is good practice to include common.h as the first header. This ensures
that required features like the DECLARE_GLOBAL_DATA_PTR macro,
configuration options and common types are available.
Fix up some files which currently don't do this. This is necessary because
driver model will soon start using global data and configuration in the
dm/read.h header file, included via dm.h. The gd->fdt_blob value will be
used to access the device tree and CONFIG options will be used to
determine whether to support inline functions in the header file.
Signed-off-by: Simon Glass <[email protected]>
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These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.
In the end we will have:
1. dev_read_addr...() - works on devices, supports flat/live tree
2. devfdt_get_addr...() - current functions, flat tree only
3. of_get_address() etc. - new functions, live tree only
All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.
Note this involves changing some dead code - the imx_lpi2c.c file.
Signed-off-by: Simon Glass <[email protected]>
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This header includes things that are needed to make driver build. Adjust
existing users to include that always, even if other dm/ includes are
present
Signed-off-by: Simon Glass <[email protected]>
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It's currently bugged and doesn't work for even cases.
Right shift bits instead of dividing and fix even cases.
Signed-off-by: Álvaro Fernández Rojas <[email protected]>
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I missed this when I added support for BMIPS UART driver and it's needed to
achieve a real 115200 8N1 setup.
Signed-off-by: Álvaro Fernández Rojas <[email protected]>
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Signed-off-by: Hiroyuki Yokoyama <[email protected]>
Cc: Hiroyuki Yokoyama <[email protected]>
Cc: Nobuhiro Iwamatsu <[email protected]>
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On my x86 platform I've noticed, that calling dm_uninit() or the new
function dm_remove_devices_flags() does not remove the desired device at
all. Debugging showed, that the serial uclass returns -EPERM in
serial_pre_remove(). This patch sets the force parameter when calling
stdio_deregister_dev() resulting in a removal of the device.
Signed-off-by: Stefan Roese <[email protected]>
Cc: Simon Glass <[email protected]>
Cc: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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In the two cases in the code where we use CONFIG_OMAP as a useful test
currently we can make use of CONFIG_ARCH_OMAP2PLUS instead. With that
changed we can drop all defines of CONFIG_OMAP. While in here,
CONFIG_OMAP3430 is only defined and then never used, so drop.
Signed-off-by: Tom Rini <[email protected]>
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Add debug UART functions to permit omap specific ns16550 to
provide an early debug UART. This is mostly in common with
DEBUG_UART_NS16550 except for Mode definition register which
is required for selecting UART mode(16x auto-baud or 13x mode).
Signed-off-by: Lokesh Vutla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
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It is based on linux/drivers/tty/serial/bcm63xx_uart.c
Signed-off-by: Álvaro Fernández Rojas <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add the clock support.
Note that the clock handling of the DBGU peripheral is different
from the USART.
Signed-off-by: Wenyou Yang <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add the uart init function to be used on both probe and the early
debug uart init. For the latter, the input clock should be from
CONFIG_DEBUG_UART_CLOCK.
Signed-off-by: Wenyou Yang <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Only A23/A33 in SUN8I want a default value of CONS_INDEX of 5, for other
chips the default value is 1 like other Allwinner SoCs.
Fix this default value.
The original wrong value has lead to wrong console on H3 Orange Pi
boards.
Fixes: 7095f8641863 ("sunxi: Convert CONS_INDEX to Kconfig")
Signed-off-by: Icenowy Zheng <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
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