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

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>

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ARM: Rework and correct barrier definitions

As part of testing booting Linux kernels on Rockchip devices, it was
discovered by Ziyuan Xu and Sandy Patterson that we had multiple and for
some cases i

ARM: Rework and correct barrier definitions

As part of testing booting Linux kernels on Rockchip devices, it was
discovered by Ziyuan Xu and Sandy Patterson that we had multiple and for
some cases incomplete isb definitions. This was causing a failure to
boot of the Linux kernel.

In order to solve this problem as well as cover any corner cases that we
may also have had a number of changes are made in order to consolidate
things. First, <asm/barriers.h> now becomes the source of isb/dsb/dmb
definitions. This however introduces another complexity. Due to
needing to build SPL for 32bit tegra with -march=armv4 we need to borrow
the __LINUX_ARM_ARCH__ logic from the Linux Kernel in a more complete
form. Move this from arch/arm/lib/Makefile to arch/arm/Makefile and add
a comment about it. Now that we can always know what the target CPU is
capable off we can get always do the correct thing for the barrier. The
final part of this is that need to be consistent everywhere and call
isb()/dsb()/dmb() and NOT call ISB/DSB/DMB in some cases and the
function names in others.

Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Sandy Patterson <apatterson@sightlogix.com>
Reported-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Reported-by: Sandy Patterson <apatterson@sightlogix.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

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arm: Don't invalidate unaligned cache regions

At present armv7 will unhappily invalidate a cache region and print an
error message. Make it skip the operation instead, as it does with other
cache op

arm: Don't invalidate unaligned cache regions

At present armv7 will unhappily invalidate a cache region and print an
error message. Make it skip the operation instead, as it does with other
cache operations.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

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arm: Move check_cache_range() into a common place

This code is common, so move it into a common file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

arm: cache: add missing dummy functions for when dcache disabled

Adds missing flush_dcache_range and invalidate_dcache_range dummy
(empty) placeholder functions to the #else portion of the #ifndef
C

arm: cache: add missing dummy functions for when dcache disabled

Adds missing flush_dcache_range and invalidate_dcache_range dummy
(empty) placeholder functions to the #else portion of the #ifndef
CONFIG_SYS_DCACHE_OFF, where full implementations of these functions
are defined.

Signed-off-by: Daniel Allred <d-allred@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

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arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL) with asm code

Lets be consistent and also replace v7_maint_dcache_all()
with asm code for the invalidate case.

Signed-off-by: Hans de Goede

arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL) with asm code

Lets be consistent and also replace v7_maint_dcache_all()
with asm code for the invalidate case.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_CLEAN_INVAL_ALL) with asm code

v7_maint_dcache_all() does not work reliable when build with gcc6,
see: https://bugzilla.redhat.com/show_bug.cgi?id=13187

arm: Replace v7_maint_dcache_all(ARMV7_DCACHE_CLEAN_INVAL_ALL) with asm code

v7_maint_dcache_all() does not work reliable when build with gcc6,
see: https://bugzilla.redhat.com/show_bug.cgi?id=1318788

While debugging this I learned that v7_maint_dcache_all() is unreliable
when build with gcc5 too when it is marked as noinline.

This commit fixes the reliability issues by replacing the C-code with
the ready to use asm implementation from the kernel.

Given that this code when written as C-code clearly is quite fragile
(also see the existing comments about the C-code being the way it is
to get optimal assembly) and that we have a proven asm alternative,
I believe that this is the best solution.

Note that we actually already had a copy of the kernel's
v7_flush_dcache_all() before this commit in
arch/arm/mach-uniphier/arm32/lowlevel_init.S.

This commit moves that code arch/arm/cpu/armv7/cache_v7_asm.S, renames
it to __v7_flush_dcache_all(), and adds a v7_flush_dcache_all() wrapper
which saves / restores the clobbered registers for use from C-code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>

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arm: cache: Implement cache range check for v7

Add code to aid tracking down cache alignment issues.
In case DEBUG is defined in the cache.c, this code will
check alignment of each attempt to flush/

arm: cache: Implement cache range check for v7

Add code to aid tracking down cache alignment issues.
In case DEBUG is defined in the cache.c, this code will
check alignment of each attempt to flush/invalidate data
cache and print a warning if the alignment is incorrect.
If DEBUG is not defined, this code is optimized out.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@konsulko.com>

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ARM: cache: implement a default weak flush_cache() function

Current many cpu use the same flush_cache() function, which just call
the flush_dcache_range().
So implement a weak flush_cache() for all

ARM: cache: implement a default weak flush_cache() function

Current many cpu use the same flush_cache() function, which just call
the flush_dcache_range().
So implement a weak flush_cache() for all the cpus to use.

In original weak flush_cache() in arch/arm/lib/cache.c, there has some
code for ARM1136 & ARM926ejs. But in the arch/arm/cpu/arm1136/cpu.c and
arch/arm/cpu/arm926ejs/cache.c, there implements a real flush_cache()
function as well. That means the original code for ARM1136 & ARM926ejs
in weak flush_cache() of arch/arm/lib/cache.c is totally useless.

So in this patch remove such code in flush_cache() and only call
flush_dcache_range().

Signed-off-by: Josh Wu <josh.wu@atmel.com>

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ARM: cache: add an empty stub function for invalidate/flush dcache

Since some driver like ohci, lcd used dcache functions. But some ARM
cpu don't implement the invalidate_dcache_range()/flush_dcache

ARM: cache: add an empty stub function for invalidate/flush dcache

Since some driver like ohci, lcd used dcache functions. But some ARM
cpu don't implement the invalidate_dcache_range()/flush_dcache_range()
functions.

To avoid compiling errors this patch adds an weak empty stub function
for all ARM cpu in arch/arm/lib/cache.c.
And ARM cpu still can implemnt its own cache functions on the cpu folder.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: York Sun <yorksun@freescale.com>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

ARM: cpu: Add ARMv7 barrier operations support

This enables ARMv7 barrier operations support when
march=armv7-a is enabled.

Using CP15 barriers causes U-Boot bootm command crash when
transferring c

ARM: cpu: Add ARMv7 barrier operations support

This enables ARMv7 barrier operations support when
march=armv7-a is enabled.

Using CP15 barriers causes U-Boot bootm command crash when
transferring control to the loaded image on Renesas R8A7794 Cortex A7 CPU.
Using ARMv7 barrier operations instead of the deprecated CP15 barriers
helps to avoid these issues.

Signed-off-by: Valentine Barshak <valentine.barshak+renesas@cogentembedded.com>
Signed-off-by: Vladimir Barinov <vladimir.barinov+renesas@cogentembedded.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

ARM: cache_v7: Various minor cleanups

Remove two gratuituous blank lines, uses u32 (instead of int) as the
type for values that will be written to a register, moves the beginning
of the variable dec

ARM: cache_v7: Various minor cleanups

Remove two gratuituous blank lines, uses u32 (instead of int) as the
type for values that will be written to a register, moves the beginning
of the variable declaration section to a separate line (rather than the
one with the opening brace) and keeps the function signature on a single
line where possible.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>

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Merge branch 'master' of git://git.denx.de/u-boot

Signed-off-by: Stefano Babic <sbabic@denx.de>

Conflicts:
boards.cfg

ARM: cache_v7: use __weak

This is not only more readable but also prevents a warning
about a missing prototype. The prototypes which are actually
missing are added.

cc: Albert Aribaud <albert.u.boo

ARM: cache_v7: use __weak

This is not only more readable but also prevents a warning
about a missing prototype. The prototypes which are actually
missing are added.

cc: Albert Aribaud <albert.u.boot@aribaud.net>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Reviewed-by: Tom Rini <trini@ti.com>

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Merge git://git.denx.de/u-boot-arm

Conflicts:
board/freescale/mx6qsabrelite/Makefile
board/freescale/mx6qsabrelite/mx6qsabrelite.c
include/configs/mx6qsabrelite.h

Signed-off-by: Stefano Babic <s

Merge git://git.denx.de/u-boot-arm

Conflicts:
board/freescale/mx6qsabrelite/Makefile
board/freescale/mx6qsabrelite/mx6qsabrelite.c
include/configs/mx6qsabrelite.h

Signed-off-by: Stefano Babic <sbabic@denx.de>

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Merge branch 'u-boot/master' into u-boot-arm/master

Add GPL-2.0+ SPDX-License-Identifier to source files

Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Merge branch 'u-boot/master' into 'u-boot-arm/master'

Conflicts:
drivers/spi/tegra20_sflash.c
include/fdtdec.h
lib/fdtdec.c

ARM: mmu: Set domain permissions to client access

The 'XN' execute never bit is set in the pagetables. This will
prevent speculative prefetches to non executable regions. But the
domain permissio

ARM: mmu: Set domain permissions to client access

The 'XN' execute never bit is set in the pagetables. This will
prevent speculative prefetches to non executable regions. But the
domain permissions are set as master in the DACR register.
So the pagetable attribute for 'XN' is not effective. Change the
permissions to client.

This fixes lot of speculative prefetch aborts seen on OMAP5
secure devices.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Tested-by: Vincent Stehle <v-stehle@ti.com>
Cc: Vincent Stehle <v-stehle@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

arm: Add control over cachability of memory regions

Add support for adjusting the L1 cache behavior by updating the MMU
configuration. The mmu_set_region_dcache_behaviour() function allows
drivers t

arm: Add control over cachability of memory regions

Add support for adjusting the L1 cache behavior by updating the MMU
configuration. The mmu_set_region_dcache_behaviour() function allows
drivers to make these changes after the MMU is set up.

It is implemented only for ARMv7 at present.

This is needed for LCD support, where we want to make the LCD frame buffer
write-through (or off) rather than write-back.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm: (145 commits)
beagleboard: enable HUB power on all variants of the BeagleBoard
dm3730: enable dp

Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm: (145 commits)
beagleboard: enable HUB power on all variants of the BeagleBoard
dm3730: enable dpll5
ehci-hcd: Allow cleanups to happen gracefully on a timeout.
OMAP3: Add DSS driver for OMAP3
led: Remove state-saving of led for toggle functionality and add toggle option to led command
led: Fixed setting of STATUS_LED_BIT1 when led_name is 'all'
led: correct off/on locations in structure
led: added cmd_led to Makefile
BeagleBoard: fix LED 0/1 in driver
Corrected LED name match finding avoiding extraneous Usage printouts
BeagleBoard: config: updated default configuration
BeagleBoard: config: Enabled multibus support for I2C in configuration
BeagleBoard: config: add optargs/buddy/camera
BeagleBoard: config: increase command-line functionality
BeagleBoard: config: make mtest run
BeagleBoard: config: enable DSS
BeagleBoard: config: enable asix driver and dhcp
BeagleBoard: config: enable networking
BeagleBoard: config: decrease bootdelay to 2 seconds
BeagleBoard: config: use uImage.beagle for tftp
BeagleBoard: config: hardcode MAC for onboard SMSC
BeagleBoard: config: load kernel from MMC ext, not FAT
BeagleBoard: Configure DVI/S-video
BeagleBoard: Added userbutton command
BeagleBoard: turn off clocks in ehci_stop
USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcor
beagleboard: add support for xM revision C
beagle: pass expansionboard name in bootargs
OMAP: Remove omapfb.debug=y from Beagle and Overo env settings
OMAP3 Beagle Pin Mux initialization glitch fix
da850: modifications for Logic PD Rev.3 AM18xx EVM
da850: fix the channel number for EMAC teardown init
da850: add support for Spectrum Digital AM18xx EVM
da850: add support to wake up DSP during board init
da850: modify the U-Boot prompt string
da850: add NOR boot mode support
da8xx: add support for multiple PLL controllers
da850: indicate cache usage disable in config file
dm365: modify boot prompt from dm365 to dm36x
dm365: disable cache usage due to coherency issues
dm6446: disable cache usage due to coherency issues
OMAP3: Remove legacy mmc driver
devkit8000: Use generic MMC driver
TI OMAP3 SDP3430: Use generic MMC driver
AM3517 CraneBoard: Use generic MMC driver
OMAP3: pandora: Use generic MMC driver
OMAP3: Zoom2: Use generic MMC driver
OMAP3: Zoom1: Use generic MMC driver
OMAP3: DIG297: Use generic MMC driver
OMAP3: CM-T35: Use generic MMC driver
am3517evm: Use generic MMC driver
omap3evm: Use generic MMC driver
omap3:clock: check cpu_family before enabling clks for IVA & CAM
omap3:clock: configure GFX clock to 200MHz for AM/DM37x
OMAP3/4: Increase console I/O buffer size
PXA: vpac270: Remove re-defined CONFIG_SYS_TEXT_BASE
PXA: Fix CSB226, fix monitor length
PXA: Fix Lubbock, remove redundant parenthesis
armv7: cache: remove flush on un-aligned invalidate
armv7: stronger barrier for cache-maintenance operations
omap: enable caches at system start-up
arm: do not force d-cache enable on all boards
ORIGEN: Add MMC SPL support
ARMV7: Add support for Samsung ORIGEN board
i2c:gpio:s5p: Enable I2C GPIO on the GONI target
i2c:gpio:s5p: I2C GPIO Software implementation (via soft_i2c)
Tegra2: Use clock and pinmux functions to simplify code
Tegra2: Add additional pin multiplexing features
Tegra2: Add more clock support
Tegra2: Add microsecond timer function
ARM: remove broken "at91rm9200dk" board
ARM: remove broken "m501sk" board
ARM: remove broken "kb9202" board
ARM: remove broken "csb637" board
ARM: remove broken "cmc_pu2" board
ARM: remove broken "at91cap9adk" board
ARM: remove broken "voiceblue" board
ARM: remove broken "smdk2400" board
ARM: remove broken "sbc2410x" board
ARM: remove broken "netstar" board
ARM: remove broken "mx1fs2" board
ARM: remove broken "lpd7a40x" boards
ARM: remove broken "edb93xx" boards
ARM: remove broken "B2" board
ARM: remove broken "armadillo" board
ARM: remove broken "assabet" board
ARM: versatile: drop warnings
IMX: scb9328: drop warnings
MX31: imx31_litekit: make use of GPIO framework
MX31: mx31ads: make use of GPIO framework
MX5: mx51evk: make use of GPIO framework
MX35: mx35pdk: make use of GPIO framework
MX5: mx53loco: make use of GPIO framework
MX5: mx53evk: make use of GPIO framework
MX5: vision2: make use of GPIO framework
MX5: mx53smd: make use of GPIO framework
MX5: mx53ard: make use of GPIO framework
MX25: zmx25: make use of GPIO framework
MX5: efikamx: make use of GPIO framework
MX31: QONG: make use of GPIO framework
MX35: make use of GPIO framework for MX35 processor
MX5: make use of GPIO framework for MX5 processor
MX31: make use of GPIO framework for MX31 processor
MX25: make use of GPIO framework for MX25 processor
IMX: uniform GPIO interface using GPIO framework
MX: MX35 / MX5: uniform clock command with powerpc
MX35: MX35PDK: support additional RAM on CSD1
mx53: ddr3: Update DD3 initialization
ARM: MX51: PLL errata workaround
ARM: versatilepb : drop warnings due to double definitions
omap4: increase SRAM budget to fix build error
omap4: fix build warning due to signed unsigned comparison
mkimage: Fix 'Unknown OMAP image type - 5'
omap: fix gpio related build breaks
gpio:samsung: s5p_ suffix add for GPIO functions (C210_universal)
SMDKV310: MMC SPL: Remove unwanted dummy functions
SMDKV310: Fix undefined reference error
SMDKV310: Fix build error for smdkv310 board
gpio:samsung s5p_ suffix add for GPIO functions
mmc: S5P: Support DMA restarts at buffer boundaries
SMDKV310: Fix host compilation of mkv310_image
arm: fix bd pointer dereference prior initialization
arm, lib/board.c: use gd->ram_size instead of bd->bi_memsize
mx5: Remove CONFIG_L2_OFF and CONFIG_SYS_L2CACHE_OFF
MX31: removed warnings due to clock.h
integrator: convert to new build system
integratorcp: make the board compile
integratorap: remove hardcoded 32MB memory cmdline
...

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armv7: cache: remove flush on un-aligned invalidate

Remove the flush of boundary cache-lines done as part
of invalidate on a non cache-line boundary aligned
buffer

Also, print a warning when this s

armv7: cache: remove flush on un-aligned invalidate

Remove the flush of boundary cache-lines done as part
of invalidate on a non cache-line boundary aligned
buffer

Also, print a warning when this situation is recognized.

Signed-off-by: Aneesh V <aneesh@ti.com>

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