ARM: qcom: merge remaining subplatforms into sensible Kconfig entry

Three remaining Qualcomm platforms have special handling of the
TEXT_OFFSET to reserve the memory at the beginnig of the system RAM, see
the commit 9e775ad19f52 ("ARM: 7012/1: Set proper TEXT_OFFSET for newer
MSMs"). This is required for older platforms like IPQ40xx, MSM8x60,
MSM8960 and APQ8064 and is compatible with other 32-bit Qualcomm
platforms.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20231216162700.863456-4-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

ARM: qcom: drop most of 32-bit ARCH_QCOM subtypes

Historically we had several subtypes of 32-bit Qualcomm platforms.
Nowadays they became just useless symbols in Kconfig. Drop them and pull
corresponding clocksource entries towards top-level ARCH_QCOM entry.

Note, I've left ARCH_IPQ40XX, ARCH_MSM8x60 and ARCH_MSM8960 in place,
since they have special TEXT_OFFSET handling, which can be sorted out
separately.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231216162700.863456-3-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

ARM: mach-qcom: Add support for MSM8909

Add a Kconfig entry for MSM8909 and the "qcom,msm8909-smp" CPU
enable-method. The ARM Cortex-A7 cores are booted just like on MSM8226.

Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220705143523.3390944-9-stephan.gerhold@kernkonzept.com

ARM: rework endianess selection

Choosing big-endian vs little-endian kernels in Kconfig has not worked
correctly since the introduction of CONFIG_ARCH_MULTIPLATFORM a long
time ago.

The problems is that CONFIG_BIG_ENDIAN depends on
ARCH_SUPPORTS_BIG_ENDIAN, which can set by any one platform
in the config, but would actually have to be supported by all
of them.

This was mostly ok for ARMv6/ARMv7 builds, since these are BE8 and
tend to just work aside from problems in nonportable device drivers.
For ARMv4/v5 machines, CONFIG_BIG_ENDIAN and CONFIG_ARCH_MULTIPLATFORM
were never set together, so this was disabled on all those machines
except for IXP4xx.

As IXP4xx can now become part of ARCH_MULTIPLATFORM, it seems better to
formalize this logic: all ARMv4/v5 platforms get an explicit dependency
on being either big-endian (ixp4xx) or little-endian (the rest). We may
want to fix ixp4xx in the future to support both, but it does not work
in LE mode at the moment.

For the ARMv6/v7 platforms, there are two ways this could be handled

a) allow both modes only for platforms selecting
'ARCH_SUPPORTS_BIG_ENDIAN' today, but only LE mode for the
others, given that these were added intentionally at some
point.

b) allow both modes everwhere, given that it was already possible
to build that way by e.g. selecting ARCH_VIRT, and that the
list is not an accurate reflection of which platforms may or
may not work.

Out of these, I picked b) because it seemed slighly more logical
to me.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

ARM: qcom: Add ARCH_MSM8916 for MSM8916 on ARM32

Add a CONFIG_ARCH_MSM8916 option to enable building MSM8916 support
on ARM32. Note that since ARM64 is the main supported architecture
for MSM8916 this is only intended for testing and for devices where
signed firmware does not allow booting ARM64 kernels.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211004204955.21077-7-stephan@gerhold.net

ARM: qcom: Add support for IPQ40xx

Add support for the Qualcomm IPQ40xx SoC in Kconfig.
Also add its appropriate textofs.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: John Crispin <john@phrozen.org>
Tested-by: Robert Marko <robert.marko@sartura.hr>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

treewide: Add SPDX license identifier - Makefile/Kconfig

Add SPDX license identifiers to all Make/Kconfig files which:

- Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

ARM: qcom: Add support for MDM9615

Add support for Qualcomm MDM9615 in Kconfig and in DT match list.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

ARM: use "depends on" for SoC configs instead of "if" after prompt

Many ARM sub-architectures use prompts followed by "if" conditional,
but it is wrong.

Please notice the difference between

config ARCH_FOO
bool "Foo SoCs" if ARCH_MULTI_V7

and

config ARCH_FOO
bool "Foo SoCs"
depends on ARCH_MULTI_V7

These two are *not* equivalent!

In the former statement, it is not ARCH_FOO, but its prompt that
depends on ARCH_MULTI_V7. So, it is completely valid that ARCH_FOO
is selected by another, but ARCH_MULTI_V7 is still disabled. As it is
not unmet dependency, Kconfig never warns. This is probably not what
you want.

The former should be used only when you need to do so, and you really
understand what you are doing. (In most cases, it should be wrong!)

For enabling/disabling sub-architectures, the latter is always correct.

As a good side effect, this commit fixes some entries over 80 columns
(mach-imx, mach-integrator, mach-mbevu).

[Arnd: I note that there is not really a bug here, according to
the discussion that followed, but I can see value in being consistent
and in making the lines shorter]

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Jun Nie <jun.nie@linaro.org>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Krzysztof Halasa <khc@piap.pl>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

firmware: qcom: scm: Move the scm driver to drivers/firmware

Architectural changes in the ARM Linux kernel tree mandate the eventual
removal of the mach-* directories. Move the scm driver to
drivers/firmware and the scm header to include/linux to support that
removal.

Signed-off-by: Kumar Gala <galak@codeaurora.org>

ARM: qcom: Drop unnecessary selects from ARCH_QCOM

We don't need to force gpiolib on everyone given that it isn't
required to actually boot the device and the multiplatform
Kconfig already selects ARCH_WANT_OPTIONAL_GPIOLIB. CLKSRC_OF is
already selected by CONFIG_ARCH_MULTIPLATFORM too, so we can drop
that here.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

ARM: qcom: Select ARCH_SUPPORTS_BIG_ENDIAN

We can run qcom platforms in big-endian mode. Select the option.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

ARM: use menuconfig for sub-arch menus

The System Type menu is getting quite long with platforms and is
inconsistent in handling of sub-arch specific options. Tidy up the menu
by making platform options a menuconfig entry containing any platform
specific config items.

[arnd: change OMAP part according to suggestion from
Tony Lindgren <tony@atomide.com>]

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

ARM: qcom: Select PINCTRL by default for ARCH_QCOM

Add missing PINCTRL selection. This enables selection of pinctrollers for
Qualcomm processors.

Signed-off-by: Andy Gross <agross@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

ARM: qcom: Enable ARM_AMBA option for Qualcomm SOCs.

As some of the IPs on Qualcomm SOCs are based on ARM PrimeCell IPs.
For example SDCC controller is PrimeCell MCI pl180. Adding this option will
give flexibility to reuse the existing drivers as it is without major
modifications.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>

ARM: qcom: clean-up unneeded kconfig selects

Multi-platform support implies all these options are already selected and
individual platforms don't need to select them.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: David Brown <davidb@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org

ARM: qcom: Split Qualcomm support into legacy and multiplatform

Introduce a new mach-qcom that will support SoCs that intend to be
multiplatform compatible while keeping mach-msm to legacy SoC/board
support that will not transition over to multiplatform.

As part of this, we move support for MSM8X60, MSM8960 and MSM8974 over
to mach-qcom.

Signed-off-by: Kumar Gala <galak@codeaurora.org>