Commit graph

111 commits

Author SHA1 Message Date
Simon Glass
cd93d625fd common: Drop linux/bitops.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
c05ed00afb common: Drop linux/delay.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
25a5818ff8 common: Drop asm/ptrace.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
691d719db7 common: Drop init.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Simon Glass
52f2423804 common: Drop bootstage.h from common header
Move this fairly uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Matthias Brugger
6609d123ce timer MediaTek use upstream compatible
The timers compatible string in upstream is called
mt6577-timer. Add this compatible to the driver.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2020-05-01 11:34:01 -04:00
Nicolas Heemeryck
5b5699cdc9 timer: sti: use clk API to get timer clock rate
Retrieve clock rate through device tree. This mimics the behavior of
arm_global_timer in Linux.

Signed-off-by: Nicolas Heemeryck <nicolas.heemeryck@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
2020-03-24 14:23:35 +01:00
Nicolas Heemeryck
123123d695 timer: sti: convert to livetree
Update STI timer to support a live tree

Signed-off-by: Nicolas Heemeryck <nicolas.heemeryck@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
2020-03-24 14:23:33 +01:00
Simon Glass
336d4615f8 dm: core: Create a new header file for 'compat' features
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.

Move the compatibility features into a separate header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-05 19:33:46 -07:00
Simon Glass
61b29b8268 dm: core: Require users of devres to include the header
At present devres.h is included in all files that include dm.h but few
make use of it. Also this pulls in linux/compat which adds several more
headers. Drop the automatic inclusion and require files to include devres
themselves. This provides a good indication of which files use devres.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2020-02-05 19:33:46 -07:00
Stephan Gerhold
057b613990 timer: Add driver for Nomadik Multi Timer Unit (MTU)
The Nomadik Multi Timer Unit (MTU) provides 4 decrementing
free-running timers. It is used in ST-Ericsson Ux500 SoCs.

The driver uses the first timer to implement UCLASS_TIMER.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2020-01-22 17:47:56 -05:00
Simon Glass
642e8487ec x86: timer: Reduce timer code size in TPL on Intel CPUs
Most of the timer-calibration methods are not needed on recent Intel CPUs
and just increase code size. Add an option to use the known-good way to
get the clock frequency in TPL. Size reduction is about 700 bytes.

Note that version 1 of this commit caused bootstage to crash since the CPU
was not identified. This is corrected by changes previously applied to
make sure that the CPU is identified before spl_init() is called, such as

   39146a2e0b x86: Move CPU init to before spl_init()

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:10 +08:00
Simon Glass
77dd7c6854 x86: timer: use a timer base of 0
On x86 platforms the timer is reset to 0 when the SoC is reset. Having
this as the timer base is useful since it provides an indication of how
long it takes before U-Boot is running.

When U-Boot sets the timer base to something else, time is lost and we
no-longer have an accurate account of the time since reset. This
particularly affects bootstage.

Change the default to not read the timer base, leaving it at 0. Add an
option for when U-Boot is the secondary bootloader.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:09 +08:00
Simon Glass
c30b7adbca common: Move interrupt functions into a new header
These functions do not use driver model but are fairly widely used in
U-Boot. But it is not clear that they will use driver model anytime soon,
so we don't want to label them as 'legacy'.

Move them to a new irq_func.h header file. Avoid the name 'irq.h' since it
is widely used in U-Boot already.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:25:00 -05:00
Simon Glass
1045315df0 common: Move get_ticks() function out of common.h
This function belongs in time.h so move it over and add a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:13 -05:00
Simon Glass
036a017f79 common: Move wait_ticks functions out of common.h
This function belongs in time.h so move it over and add a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:11 -05:00
Simon Glass
c3e4430ef3 common: Drop global inclusion of status_led.h
This is only used by a few files so it should not be in the common header.
Move it out.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:06 -05:00
Simon Glass
9ce2aa1710 Drop CONFIG_SHOW_ACTIVITY
This feature is not enabled by any board. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-12-02 18:23:06 -05:00
Simon Goldschmidt
caaaf62ac8 timer: dw-apb: add reset handling
To use this DM timer on socfpga as system tick, it needs to take itself
out of reset.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2019-11-20 22:32:00 +01:00
Simon Glass
a478a26cd0 x86: timer: Use a separate flag for whether timer is inited
At present the value of the timer base is used to determine whether the
timer has been set up or not. It is true that the timer is essentially
never exactly 0 when it is read. However 'time 0' may indicate the time
that the machine was reset so it is useful to be able to denote that.

Update the code to use a separate flag instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Aiden Park <aiden.park@intel.com>
Reviewed-by: Aiden Park <aiden.park@intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-11-03 07:20:27 +08:00
Simon Glass
096c71e34b x86: timer: Set up the timer in timer_early_get_count()
This function can be called before the timer is set up. Make sure that the
init function is called so that it works correctly.

This is needed so that bootstage can work correctly in TPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-11-03 07:20:27 +08:00
Bin Meng
7efb4a6e09 dm: timer: Skip device that does not have a valid ofnode in pre_probe()
It is possible that a timer device has a null ofnode, hence there is
no need to further parse DT for the clock rate.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-07-24 12:54:08 -07:00
Simon Goldschmidt
460a97f3a2 timer: dw-apb: remove unused DECLARE_GLOBAL_DATA_PTR
The dw-apb timer does not use 'gd', so remove its declaration.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2019-05-10 22:48:11 +02:00
Marek Vasut
4d0732bf3c timer: renesas: Add RZ/A1 R7S72100 OSTM timer driver
Add OSTM timer driver for RZ/A1 SoC. The IP is very different
from the R-Car Gen2/Gen3 one already present in the tree, hence
a custom driver.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-05-07 05:41:32 +02:00
Kever Yang
15f09a1a83 rockchip: use 'arch-rockchip' as header file path
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-05-01 00:00:05 +02:00
Tom Rini
ceb6ddbc73 - Add support for Amlogic p200 & p201 Reference Designs
- Add Amlogic SoC information display
 - Add support for the Libretech-AC AML-S805X-AC board
 - Add Amlogic AXG reset compatible
 - Add I2C support for Amlogic AXG
 - Fix AXG PIN and BANK pinctrl definitions
 - Fix regmap_read_poll_timeout warning about sandbox_timer_add_offset
 - Add initial support for Amlogic G12A SoC and U200 board
 - Enable PHY_REALTEK for selected boards
 - Fix Khadas VIM2 README
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Merge tag 'u-boot-amlogic-20190423' of git://git.denx.de/u-boot-amlogic

- Add support for Amlogic p200 & p201 Reference Designs
- Add Amlogic SoC information display
- Add support for the Libretech-AC AML-S805X-AC board
- Add Amlogic AXG reset compatible
- Add I2C support for Amlogic AXG
- Fix AXG PIN and BANK pinctrl definitions
- Fix regmap_read_poll_timeout warning about sandbox_timer_add_offset
- Add initial support for Amlogic G12A SoC and U200 board
- Enable PHY_REALTEK for selected boards
- Fix Khadas VIM2 README
2019-04-24 12:26:25 -04:00
Neil Armstrong
d0a9b82b75 regmap: fix regmap_read_poll_timeout warning about sandbox_timer_add_offset
When fixing sandbox test for regmap_read_poll_timeout(), the
sandbox_timer_add_offset was introduced but only defined in sandbox code
thus generating warnings when used out of sandbox :

include/regmap.h:289:2: note: in expansion of macro 'regmap_read_poll_timeout_test'
regmap_read_poll_timeout_test(map, addr, val, cond, sleep_us, \
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/spi/meson_spifc.c:169:8: note: in expansion of macro 'regmap_read_poll_timeout'
ret = regmap_read_poll_timeout(spifc->regmap, REG_SLAVE, data,
        ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/spi/meson_spifc.c: In function 'meson_spifc_txrx':
include/regmap.h:277:4: warning: implicit declaration of function 'sandbox_timer_add_offset' [-Wimplicit-function-declaration]

This fix adds a timer_test_add_offset() only defined in sandbox, and
renames the previous sandbox_timer_add_offset() to it.

Cc: Simon Glass <sjg@chromium.org>
Reported-by: Tom Rini <trini@konsulko.com>
Fixes: df9cf1cc08 ("test: dm: regmap: Fix the long test delay")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-04-23 11:17:15 +02:00
Marek Vasut
e09c1a1331 timer: dw-apb: Add missing 64bit up-conversion
The generic timer count is an incrementing 64bit value and a timer driver
must return an incrementing 64bit value. The DW APB timer only provides a
32bit timer counting down, thus the result must be inverted and converted
to a 64bit value. The current implementation is however missing the 64bit
up-conversion and this results in random timer roll-overs, which in turn
triggers random timeouts throughout the codebase.

This patch adds the missing 64bit up-conversion to fix the issue.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>
2019-04-17 22:20:18 +02:00
Bernhard Messerklinger
ca7db866fe x86: tsc: Add support for native calibration of TSC freq
Add native tsc calibration function. Calibrate the tsc timer the same
way as linux does in arch/x86/kernel/tsc.c.

Fixes booting for Apollo Lake processors.

Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-12 14:37:16 +08:00
Bin Meng
60262cd041 timer: Add generic driver for RISC-V privileged architecture defined timer
RISC-V privileged architecture v1.10 defines a real-time counter,
exposed as a memory-mapped machine-mode register - mtime. mtime must
run at constant frequency, and the platform must provide a mechanism
for determining the timebase of mtime. The mtime register has a
64-bit precision on all RV32, RV64, and RV128 systems.

Different platform may have different implementation of the mtime
block hence an API riscv_get_time() is required by this driver for
platform codes to hide such implementation details. For example,
on some platforms mtime is provided by the CLINT module, while on
some other platforms a simple 'rdtime' can be used to get the timer
counter.

With this timer driver the U-Boot timer functionalities like delay
works correctly now.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
2018-12-18 09:56:26 +08:00
Ryder Lee
d3c3606c5c timer: MediaTek: add timer driver for MediaTek SoCs
This patch adds clock source and clock event for the timer found
on the Mediatek SoCs.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Tested-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-28 23:04:51 -05:00
Bin Meng
d7a184d4a7 timer: Remove DM_FLAG_PRE_RELOC flag in various drivers
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be
bound before relocation. However due to a bug in the DM core,
the flag only takes effect when devices are statically declared
via U_BOOT_DEVICE(). This bug has been fixed recently by commit
"dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in
lists_bind_fdt()", but with the fix, it has a side effect that
all existing drivers that declared DM_FLAG_PRE_RELOC flag will
be bound before relocation now. This may expose potential boot
failure on some boards due to insufficient memory during the
pre-relocation stage.

To mitigate this potential impact, the following changes are
implemented:

- Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver
  only supports configuration from device tree (OF_CONTROL)
- Keep DM_FLAG_PRE_RELOC flag in the driver only if the device
  is statically declared via U_BOOT_DEVICE()
- Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for
  drivers that support both statically declared devices and
  configuration from device tree

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:28 -08:00
Bin Meng
73fe41117d timer: Sort Kconfig driver entries
This is currently out of order. Sort it.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:27 -08:00
Bin Meng
8d773c4ab3 dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt()
Currently the comments of several APIs (eg: dm_init_and_scan()) say:

@pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
flag. If false bind all drivers.

The 'Pre-Relocation Support' chapter in doc/driver-model/README.txt
documents the same that both device tree properties and driver flag
are supported.

However the implementation only checks these special device tree
properties without checking the driver flag at all. This updates
lists_bind_fdt() to consider both scenarios.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Squashed in http://patchwork.ozlabs.org/patch/996473/ :
Signed-off-by: Simon Glass <sjg@chromium.org>
2018-11-14 09:16:27 -08:00
Bin Meng
6ce383640c x86: tsc: Introduce config option for early timer frequency
So far the TSC timer driver supports trying hardware calibration first
and using device tree as last resort for its running frequency as the
normal timer.

However when it is used as the early timer, it only supports hardware
calibration and if it fails, the driver just panics. This introduces
a new config option to specify the early timer frequency in MHz and
it should be equal to the value described in the device tree.

Without this patch, the travis-ci testing on QEMU x86_64 target fails
each time after it finishes the 'bootefi selftest' as the test.py see
an error was emitted on the console like this:

  TSC frequency is ZERO
  resetting ...
  ### ERROR ### Please RESET the board ###

It's strange that this error is consistently seen on the travis-ci
machine, but only occasionally seen on my local machine (maybe 1 out
of 10). Since QEMU x86_64 target enables BOOTSTAGE support which uses
early timer, with this fix it should work without any failure.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-10-22 17:51:45 +08:00
Simon Glass
97d20f69f5 Enable CONFIG_TIMER_EARLY with bootstage
In initr_bootstage() we call bootstage_mark_name() which ends up calling
timer_get_us(). This call happens before initr_dm(), which inits driver
model.

On x86 we set gd->timer to NULL in the transition from board_init_f()
to board_init_r(). See board_init_f_r() for this assignment. So U-Boot
knows there is no timer available in the period immediately after
relocation.

On x86 the timer_get_us() call is implemented as calls to get_ticks() and
get_tbclk(). Both of these call dm_timer_init() to set up the timer, if
gd->timer is NULL and the early timer is not available.

However dm_timer_init() cannot succeed before initr_dm() is called.

So it seems that on x86 if we want to use CONFIG_BOOTSTAGE we must enable
CONFIG_TIMER_EARLY. Update the Kconfig to handle this.

Note: On most architectures we can rely on the pre-relocation memory still
being available, so that gd->timer pointers to a valid timer device and
everything works correctly. Admittedly this is not strictly correct since
the timer device is set up by pre-relocation U-Boot, but normally this is
fine. On x86 the 'CAR' (cache-as-RAM) memory used by pre-relocation U-Boot
disappears in board_init_f_r() and any attempt to access it will hang.
This is the reason why we must mark the timer as invalid when we get to
board_init_f_r().

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-22 17:51:45 +08:00
Mario Six
2c21749d71 timer: Add MPC83xx timer driver
Add a timer driver for the MPC83xx architecture.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-09-18 00:01:18 -06:00
Mario Six
d259f975d4 timer: Sort Makefile entries
Makefile entries should be sorted.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
2018-09-18 00:01:18 -06:00
Lokesh Vutla
84b4221cff dm: omap-timer: Update clock rate only if not populated
timer_pre_probe() tries to populate the clock rate from DT. omap
timer driver tries to overwrite this value irrespective of the value
populated fro DT. So update this value only when DT doesn't populate
the clock rate.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-09-10 20:48:19 -04:00
Lokesh Vutla
3ee15a5180 dm: omap-timer: Use 64bit for counter values
In order to handle counter overflows use 64 bit values for counter.
Also load the initial value during probe.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-09-10 20:48:19 -04:00
Marek Vasut
66011a0883 timer: dw-apb: Add Designware APB timer driver
Add timer driver for the Designware APB Timer IP. This is present
for example on the Altera SoCFPGA chips.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
2018-08-24 12:05:20 +02:00
Bin Meng
165db7c426 x86: tsc: Try hardware calibration first
At present if TSC frequency is provided in the device tree, it takes
precedence over hardware calibration result. This swaps the order to
try hardware calibration first and uses device tree as last resort.

This can be helpful when a generic dts (eg: coreboot/efi payload) is
supposed to work on as many hardware as possible, including emulators
like QEMU where TSC hardware calibration sometimes fails.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2018-08-20 13:52:49 +08:00
Bin Meng
94e72a6bd9 x86: timer: tsc: Allow specifying clock rate from device tree again
With the introduction of early timer support in the TSC driver,
the capability of getting clock rate from device tree was lost
unfortunately. Now we bring such functionality back, but with a
limitation that when TSC is used as early timer, specifying clock
rate from device tree does not work.

This fixes random boot failures seen on QEMU targets: printing "TSC
frequency is ZERO" and reset forever.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-07-02 09:23:28 +08:00
Michal Simek
56c0e646c4 timer: cadence: Implement timer_get_boot_us
This function is required for adding bootstage support.
Also enable it directly for ZynqMP R5 configuration.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-06-15 08:06:31 +02:00
Christian Gmeiner
acc2482fd8 x86: tsc: add support for reading CPU freq from cpuid
Starting with cpuid level 0x16 (Skylake-based processors)
it is possible to get CPU base freq via cpuid.

This fixes booting on a skylake based system.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: fixed wrong indention of labels]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-06-13 09:50:57 +08:00
Michal Simek
72b88103bb timer: cadence: Use live-tree functions
Use live-tree functions.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-05-31 13:50:39 +02:00
Michal Simek
72c37d1221 timer: Add Cadence TTC timer counter support
This driver was tested on Xilinx ZynqMP SoC.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-05-11 09:23:43 +02:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Tom Rini
d024236e5a Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27 14:54:48 -04:00