This reverts commit 4dd1837d75.
Moving the exports for assembly code into the assembly files breaks
KSYM trimming, but also breaks modversions.
While fixing the KSYM trimming is trivial, fixing modversions brings
us to a technically worse position that we had prior to the above
change:
- We end up with the prototype definitions divorsed from everything
else, which means that adding or removing assembly level ksyms
become more fragile:
* if adding a new assembly ksyms export, a missed prototype in
asm-prototypes.h results in a successful build if no module in
the selected configuration makes use of the symbol.
* when removing a ksyms export, asm-prototypes.h will get forgotten,
with armksyms.c, you'll get a build error if you forget to touch
the file.
- We end up with the same amount of include files and prototypes,
they're just in a header file instead of a .c file with their
exports.
As for lines of code, we don't get much of a size reduction:
(original commit)
47 files changed, 131 insertions(+), 208 deletions(-)
(fix for ksyms trimming)
7 files changed, 18 insertions(+), 5 deletions(-)
(two fixes for modversions)
1 file changed, 34 insertions(+)
3 files changed, 7 insertions(+), 2 deletions(-)
which results in a net total of only 25 lines deleted.
As there does not seem to be much benefit from this change of approach,
revert the change.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Pull kbuild updates from Michal Marek:
- EXPORT_SYMBOL for asm source by Al Viro.
This does bring a regression, because genksyms no longer generates
checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is
working on a patch to fix this.
Plus, we are talking about functions like strcpy(), which rarely
change prototypes.
- Fixes for PPC fallout of the above by Stephen Rothwell and Nick
Piggin
- fixdep speedup by Alexey Dobriyan.
- preparatory work by Nick Piggin to allow architectures to build with
-ffunction-sections, -fdata-sections and --gc-sections
- CONFIG_THIN_ARCHIVES support by Stephen Rothwell
- fix for filenames with colons in the initramfs source by me.
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits)
initramfs: Escape colons in depfile
ppc: there is no clear_pages to export
powerpc/64: whitelist unresolved modversions CRCs
kbuild: -ffunction-sections fix for archs with conflicting sections
kbuild: add arch specific post-link Makefile
kbuild: allow archs to select link dead code/data elimination
kbuild: allow architectures to use thin archives instead of ld -r
kbuild: Regenerate genksyms lexer
kbuild: genksyms fix for typeof handling
fixdep: faster CONFIG_ search
ia64: move exports to definitions
sparc32: debride memcpy.S a bit
[sparc] unify 32bit and 64bit string.h
sparc: move exports to definitions
ppc: move exports to definitions
arm: move exports to definitions
s390: move exports to definitions
m68k: move exports to definitions
alpha: move exports to actual definitions
x86: move exports to actual definitions
...
These are updates for platform specific code on 32-bit ARM machines,
essentially anything that can not (yet) be expressed using DT files.
Noteworthy changes include:
- We get support for running in big-endian mode on two platforms:
sunxi (Allwinner) and s3c24xx (old Samsung).
- The recently added Uniphier platform now uses standard PSCI
methods for SMP booting and we remove support for old bootloader
versions that did not support it yet.
- In sunxi, we gain support for the "Nextthing GR8" SoC, which
is a close relative of the Allwinner A13 and R8 chips.
- PXA completes its move over to the generic dmaengine framework
and removes its old private API
- mach-bcm gains support for BCM47189/BCM53573, their first ARM
SoC with integrated 802.11ac wireless networking.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Arnd Bergmann:
"These are updates for platform specific code on 32-bit ARM machines,
essentially anything that can not (yet) be expressed using DT files.
Noteworthy changes include:
- We get support for running in big-endian mode on two platforms:
sunxi (Allwinner) and s3c24xx (old Samsung).
- The recently added Uniphier platform now uses standard PSCI methods
for SMP booting and we remove support for old bootloader versions
that did not support it yet.
- In sunxi, we gain support for the "Nextthing GR8" SoC, which is a
close relative of the Allwinner A13 and R8 chips.
- PXA completes its move over to the generic dmaengine framework and
removes its old private API
- mach-bcm gains support for BCM47189/BCM53573, their first ARM SoC
with integrated 802.11ac wireless networking"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
ARM: imx legacy: pca100: move peripheral initialization to .init_late
ARM: imx legacy: mx27ads: move peripheral initialization to .init_late
ARM: imx legacy: mx21ads: move peripheral initialization to .init_late
ARM: imx legacy: pcm043: move peripheral initialization to .init_late
ARM: imx legacy: mx35-3ds: move peripheral initialization to .init_late
ARM: imx legacy: mx27-3ds: move peripheral initialization to .init_late
ARM: imx legacy: imx27-visstrim-m10: move peripheral initialization to .init_late
ARM: imx legacy: vpr200: move peripheral initialization to .init_late
ARM: imx legacy: mx31moboard: move peripheral initialization to .init_late
ARM: imx legacy: armadillo5x0: move peripheral initialization to .init_late
ARM: imx legacy: qong: move peripheral initialization to .init_late
ARM: imx legacy: mx31-3ds: move peripheral initialization to .init_late
ARM: imx legacy: pcm037: move peripheral initialization to .init_late
ARM: imx legacy: mx31lilly: move peripheral initialization to .init_late
ARM: imx legacy: mx31ads: move peripheral initialization to .init_late
ARM: imx legacy: mx31lite: move peripheral initialization to .init_late
ARM: imx legacy: kzm: move peripheral initialization to .init_late
MAINTAINERS: update list of Oxnas maintainers
ARM: orion5x: remove extraneous NO_IRQ
ARM: orion: simplify orion_ge00_switch_init
...
The imx6ul soc code gained support for cpuidle, but that causes
a link failure if CONFIG_SOC_IMX6SX is disabled:
arch/arm/mach-imx/mach-imx6ul.o: In function `imx6ul_init_late':
mach-imx6ul.c:(.init.text+0xc): undefined reference to `imx6sx_cpuidle_init'
This adds the file containing the imx6sx_cpuidle_init function
to the kernel for 6ul-only configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 547e8f5269 ("ARM: imx: add cpuidle support for i.mx6ul")
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This patch moves SOC_IMX1 into 'Device tree only' category and renames
imx1-dt.c to mach-imx1.c to align with the name schema of other
i.MX DT only platforms.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This patch removes registration helpers and support files,
used for non-DT i.MX1 targets.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Synertronixx SCB9328 board is very similar to Armadeus APF9328,
so it can be easily reimplemented in DT way.
This patch removes support for non-DT support for this board.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
mach-apf9328.c can be replaced with devicetree equivalent: imx1-apf9328.dts,
so remove the board file.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The imx31 and imx35 idle functions are almost the same, but we
currently have to check the cpu type every time. This can be
simplified by moving the logic from mx3_cpu_lp_set() into
two separate idle functions, removing the last user of
cpu_is_mx35.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Tested basic suspend/resume on a mx25pdk:
$ echo enabled > /sys/class/tty/ttymxc0/power/wakeup
$ echo mem > /sys/power/state
Then press any key in the serial console and the system wakes up.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Our SoC branch usually contains expanded support for new SoCs and
other core platform code. Some highlights from this round:
- sunxi: SMP support for A23 SoC
- socpga: big-endian support
- pxa: conversion to common clock framework
- bcm: SMP support for BCM63138
- imx: support new I.MX7D SoC
- zte: basic support for ZX296702 SoC
Conflicts:
arch/arm/mach-socfpga/core.h
Trivial remove/remove conflict with our cleanup branch.
Resolution: remove both sides
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform support updates from Kevin Hilman:
"Our SoC branch usually contains expanded support for new SoCs and
other core platform code. Some highlights from this round:
- sunxi: SMP support for A23 SoC
- socpga: big-endian support
- pxa: conversion to common clock framework
- bcm: SMP support for BCM63138
- imx: support new I.MX7D SoC
- zte: basic support for ZX296702 SoC"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (134 commits)
ARM: zx: Add basic defconfig support for ZX296702
ARM: dts: zx: add an initial zx296702 dts and doc
clk: zx: add clock support to zx296702
dt-bindings: Add #defines for ZTE ZX296702 clocks
ARM: socfpga: fix build error due to secondary_startup
MAINTAINERS: ARM64: EXYNOS: Extend entry for ARM64 DTS
ARM: ep93xx: simone: support for SPI-based MMC/SD cards
MAINTAINERS: update Shawn's email to use kernel.org one
ARM: socfpga: support suspend to ram
ARM: socfpga: add CPU_METHOD_OF_DECLARE for Arria 10
ARM: socfpga: use CPU_METHOD_OF_DECLARE for socfpga_cyclone5
ARM: EXYNOS: register power domain driver from core_initcall
ARM: EXYNOS: use PS_HOLD based poweroff for all supported SoCs
ARM: SAMSUNG: Constify platform_device_id
ARM: EXYNOS: Constify irq_domain_ops
ARM: EXYNOS: add coupled cpuidle support for Exynos3250
ARM: EXYNOS: add exynos_get_boot_addr() helper
ARM: EXYNOS: add exynos_set_boot_addr() helper
ARM: EXYNOS: make exynos_core_restart() less verbose
ARM: EXYNOS: fix exynos_boot_secondary() return value on timeout
...
After the cleanup on imx timer driver, now it's ready to be moved into
drivers/clocksource/. Let's do it.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
In order to save power the DDR pins should be put into high
impedance when in suspend to RAM.
This requires manually requesting self refresh (rather than using the
automatic mode implemented by the CCM / ESDCTL), followed by
reconfiguring the IOMUXC.
Of course the code to do this cannot itself run from DDR so the
code is copied to and executed from internal memory.
In my tests using a custom i.MX53 board with LPDDR2 RAM
this reduced the suspend power consumption from 200mW to 60mW.
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
After the cleanup on clock drivers, they are now ready to be moved into
drivers/clk. Let's move them into drivers/clk/imx folder.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
eukrea_mbimxsd35 board has device tree support, so we can get rid of the
board related files.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
We use dynamic memory mapping when using dt, so remove all the static mappings.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
As mx25 is a dt-only platform, we can get rid of platform code support files,
which are unused now.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
As there is no more mx25 board files, we can turn mx25 into a dt-only platform.
Rename imx25-dt.c to mach-imx25.c to be consistent with the other i.MX SoCs.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
eukrea mx25 is well supported in device tree, so let's get rid of its board
files.
Cc: Eric Bénard <eric@eukrea.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
imx25-pdk.dts provides a more complete support than the board file version, so
let's get rid of the board file.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This patch introduces an independent cpuidle driver for
i.MX6SX, and supports arm power off in idle, totally
3 levels of cpuidle are supported as below:
1. ARM WFI;
2. SOC in WAIT mode;
3. SOC in WAIT mode + ARM power off.
ARM power off can save at least 5mW power.
This patch also replaces imx6q_enable_rbc with imx6_enable_rbc.
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Freescale LS1021A SoCs deploy two cortex-A7 processors,
this adds bring-up support for the secondary core.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The LS1021A SoC is a dual-core Cortex-A7 based processor,
this adds the initial support for it.
Signed-off-by: Jingchang Lu <b35083@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This implements a virtual clock used to abstract away
all the steps needed in order to change the ARM clock,
so we don't have to push all this clock handling into
the cpufreq driver.
While it will be used for i.MX53 at first it is generic
enough to be used on i.MX6 later on.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
There are a couple of gate clocks are mutually exclusive on i.MX6, i.e.
LVDSCLK1_IBEN and LVDSCLK1_OBEN. They cannot be enabled simultaneously.
This patches adds an exclusive gate clock type specifically for such
case. The clock driver will need to call imx_clk_gate_exclusive() to
register a gate clock with parameter exclusive_mask indicating the mask
of gate bits which are mutually exclusive to this gate clock.
Right now, it only handles the exclusive gate clocks which are defined
in a single hardware register, which is the case we're running into
today. But it can be extended to handle exclusive gate clocks defined
in different registers later if needed.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
This patch adds basic devicetree support for i.MX1 based SoCs.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
All the current support of mach-mxt_td60 board can be converted to devicetree.
Remove the board file.
Cc: Alan Carvalho de Assis <acassis@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
mx1ads.c can be replaced with devicetree equivalent: imx1-ads.dts,
so remove the board file.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
pcm970-baseboard.c and mach-pcm038.c can be replaced with their
devicetree equivalents: imx27-phytec-phycore-rdk.dts and
imx27-phytec-phycore-som.dtsi respectively, so remove the board files.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
eukrea_mbimx27-baseboard.c and mach-cpuimx27.c can be replaced with their
devicetree equivalents: imx27-eukrea-mbimxsd27-baseboard.dts and
imx27-eukrea-cpuimx27.dtsi respectively, so remove the board files.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
My earlier patch 1fc593feaf ("ARM: imx: build i.MX6 functions
only when needed") fixed a problem with building an i.MX5 kernel,
but now the problem has returned for the case where we allow
ARMv6K SMP builds in multiplatform. With CONFIG_CPU_V7 disabled,
but i.MX3 and SMP enabled, we get this build error:
arch/arm/mach-imx/built-in.o: In function `v7_secondary_startup':
:(.text+0x5124): undefined reference to `v7_invalidate_l1'
This puts the code inside of an "ifdef CONFIG_SOC_IMX6" to hopefully
do the right thing in all configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
The board has no insufficient support to be fully functional and seems
has no users. This patch removes support for this board.
However, the support may be added in the future by using the devicetree.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
i.MX1 camera driver has been removed by the commit 90b055898e.
This patch removes remaining support files for this camera.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Building a kernel for imx6sx but without imx6q support results in
this link error because of the missing cpuidle driver:
arch/arm/mach-imx/built-in.o: In function `imx6sx_init_late'::(.init.text+0xc228):
undefined reference to `imx6q_cpuidle_init'
This patch adds a Makefile entry so we always build support for
the imx6q_cpuidle code when at least one of the 6sx or 6q variants
are enabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
The board has no insufficient support to be fully functional and seems
has no users. This patch removes support for this board. However, the
support may be added in the future by using the devicetree.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
The only code left in mm-imx5.c is to create static mapping. While all
IMX platform code are moved to use dynamic mapping, the file can just be
removed now.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Since i.MX51 becomes DT only now, we can drop option MACH_IMX51_DT and
just use SOC_IMX51 instead. While at it, rename imx51-dt.c to
mach-imx51.c to align with the name schema of other IMX DT only
platforms.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
eukrea_mbimxsd51-baseboard.c and mach-cpuimx51sd.c can be replaced with their
devicetree equivalents: imx51-eukrea-mbimxsd51-baseboard.dts and
imx51-eukrea-cpuimx51.dtsi respectively, so remove the board files.
This allows the conversion of mx51 to a devicetree-only platform.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
The device tree version for the babbage board (imx51-babbage.dtb) has a more
complete support than the board file version, so remove the board file source
code.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Even when CONFIG_SUSPEND is enabled, it makes no sense to build
suspend-imx6.o if none of i.MX6 support is built in. Let's build
suspend-imx6.o only when both CONFIG_SUSPEND and CONFIG_SOC_IMX6 are
enabled.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The pm-imx6q.c works for all i.MX6 SoCs, so let's rename it to pm-imx6.c
and have the build controlled by option CONFIG_SOC_IMX6.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
With v7_cpu_resume() being moved out of headsmp.S, all the remaining
code in the file is only needed by CONFIG_SMP build. So we can control
the build of headsmp.o with only obj-$(CONFIG_SMP) now.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The suspend-imx6.S is introduced recently for suspend low-level assembly
code. Since function v7_cpu_resume() is only used by suspend support,
it makes sense to move the function into suspend-imx6.S, and control the
build of the file with CONFIG_SUSPEND option.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
i.MX6SL's suspend in ocram function is derived from i.MX6Q,
it can lower the DDR IO power from ~10mA@1.2V to ~1mA@1.2V,
measured on i.MX6SL EVK board, SH5.
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
When system enter suspend, we can set the DDR IO to
high-Z state to save DDR IOs' power consumption, this
operation can save many power(from ~26mA@1.5V to ~15mA@1.5V,
measured on i.MX6Q SabreSD board, R25) of DDR IOs. To
achieve that, we need to copy the suspend code to ocram
and run the low level hardware related code(set DDR IOs
to high-Z state) in ocram.
If there is no ocram space available, then system will
still do suspend in external DDR, hence no DDR IOs will
be set to high-Z.
The OCRAM usage layout is as below,
ocram suspend region(4K currently):
======================== high address ======================
.
.
.
^
^
^
imx6_suspend code
PM_INFO structure(imx6_cpu_pm_info)
======================== low address =======================
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
