Commit Graph

205 Commits

Author SHA1 Message Date
Linus Torvalds
6ff6f86bc4 ARM updates for 5.12-rc1:
- Generalise byte swapping assembly
 - Update debug addresses for STI
 - Validate start of physical memory with DTB
 - Do not clear SCTLR.nTLSMD in decompressor
 - amba/locomo/sa1111 devices remove method return type is void
 - address markers for KASAN in page table dump
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:

 - Generalise byte swapping assembly

 - Update debug addresses for STI

 - Validate start of physical memory with DTB

 - Do not clear SCTLR.nTLSMD in decompressor

 - amba/locomo/sa1111 devices remove method return type is void

 - address markers for KASAN in page table dump

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
  ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
  amba: Make use of bus_type functions
  amba: Make the remove callback return void
  vfio: platform: simplify device removal
  amba: reorder functions
  amba: Fix resource leak for drivers without .remove
  ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
  ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
  ARM: 9051/1: vdso: remove unneded extra-y addition
  ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
  ARM: 9049/1: locomo: make locomo bus's remove callback return void
  ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
  ARM: 9047/1: smp: remove unused variable
  ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
  ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
  ARM: 9042/1: debug: no uncompress debugging while semihosting
  ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
  ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
  ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
2021-02-22 14:27:07 -08:00
Linus Torvalds
5011bb9fbb ARM: SoC changes for v5.12
This is mostly 32-bit code for SoC platforms, and looks smaller
 than any such branch I remember from previous kernels, as most
 of this is now handled in other subsystems for modern platforms:
 
 - Minor bugfixes and Kconfig updates for Tegra, Broadcom, i.MX,
   Renesas, and Samsung
 
 - Updates to the MAINTAINERS listing for Actions, OMAP, and Samsung
 
 - Samsung SoC driver updates to make them loadable modules
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-soc-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Arnd Bergmann:
 "This is mostly 32-bit code for SoC platforms, and looks smaller than
  any such branch I remember from previous kernels, as most of this is
  now handled in other subsystems for modern platforms:

   - Minor bugfixes and Kconfig updates for Tegra, Broadcom, i.MX,
     Renesas, and Samsung

   - Updates to the MAINTAINERS listing for Actions, OMAP, and Samsung

   - Samsung SoC driver updates to make them loadable modules"

* tag 'arm-soc-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  MAINTAINERS: arm: samsung: include S3C headers in platform entry
  MAINTAINERS: Add linux-actions ML for Actions Semi Arch
  ARM: s3c: irq-s3c24xx: staticize local functions
  ARM: s3c: irq-s3c24xx: include headers for missing declarations
  ARM: s3c: fix fiq for clang IAS
  ARM: imx: Remove unused IMX_GPIO_NR() macro
  soc: renesas: rcar-sysc: Mark device node OF_POPULATED after init
  ARM: OMAP2+: fix spellint typo
  MAINTAINERS: Update address for OMAP GPMC driver
  soc: renesas: rcar-sysc: Use readl_poll_timeout_atomic()
  ARM: bcm: Select BRCMSTB_L2_IRQ for bcm2835
  ARM: brcmstb: Add debug UART entry for 72116
  ARM: tegra: Don't enable unused PLLs on resume from suspend
  soc: samsung: pm_domains: Convert to regular platform driver
  soc: samsung: exynos-chipid: correct helpers __init annotation
  ARM: mach-imx: imx6ul: Print SOC revision on boot
  ARM: imx: mach-imx6ul: remove 14x14 EVK specific PHY fixup
  soc: samsung: exynos-chipid: convert to driver and merge exynos-asv
  soc: samsung: exynos-asv: handle reading revision register error
  soc: samsung: exynos-asv: don't defer early on not-supported SoCs
2021-02-20 18:20:06 -08:00
Linus Torvalds
584ce3c9b4 SoC platform removal
There are a lot of platforms that have not seen any interesting code
 changes in the past five years or more.
 
 I made a list and asked around which ones are no longer in use [1], and
 received confirmation about six ARM platforms and the TI C6x architecture
 that have all reached the end of their life upstream, with no known
 users remaining:
 
  - efm32 -- added in 2011, first Cortex-M, no notable changes after 2013
  - picoxcell -- added in 2011, abandoned after 2012 acquisition
  - prima2 -- added in 20111, no notable changes since 2015
  - tango -- added in 2015, sporadic changes until 2017, but abandoned
  - u300 -- added in 2009, no notable changes since 2013
  - zx --added in 2015 for both 32, 2017 for 64 bit, no notable changes
  - arch/c6x -- added in 2011, but work stalled soon after that
 
 A number of other platforms on the original list turned out to still
 have users. In some cases there are out-of-tree patches and users
 that plan to contribute them in the future, in other cases the code
 is complete and works reliably.
 
 [1] https://lore.kernel.org/lkml/CAK8P3a2DZ8xQp7R=H=wewHnT2=a_=M53QsZOueMVEf7tOZLKNg@mail.gmail.com/
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-platform-removal-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC platform removals from Arnd Bergmann:
 "There are a lot of platforms that have not seen any interesting code
  changes in the past five years or more.

  I made a list and asked around which ones are no longer in use, and
  received confirmation about six ARM platforms and the TI C6x
  architecture that have all reached the end of their life upstream,
  with no known users remaining:

   - efm32 - added in 2011, first Cortex-M, no notable changes after 2013

   - picoxcell - added in 2011, abandoned after 2012 acquisition

   - prima2 - added in 20111, no notable changes since 2015

   - tango - added in 2015, sporadic changes until 2017, but abandoned

   - u300 - added in 2009, no notable changes since 2013

   - zx - added in 2015 for both 32, 2017 for 64 bit, no notable changes

   - arch/c6x - added in 2011, but work stalled soon after that

  A number of other platforms on the original list turned out to still
  have users. In some cases there are out-of-tree patches and users that
  plan to contribute them in the future, in other cases the code is
  complete and works reliably"

Link: https://lore.kernel.org/lkml/CAK8P3a2DZ8xQp7R=H=wewHnT2=a_=M53QsZOueMVEf7tOZLKNg@mail.gmail.com/

* tag 'arm-platform-removal-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  ARM: remove u300 platform
  ARM: remove tango platform
  ARM: remove zte zx platform
  ARM: remove sirf prima2/atlas platforms
  c6x: remove architecture
  MAINTAINERS: Remove deleted platform efm32
  ARM: drop efm32 platform
  ARM: Remove PicoXcell platform support
  ARM: dts: Remove PicoXcell platforms
2021-02-20 18:16:30 -08:00
Alain VOLMAT
9ca4efec0a ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
Update the sti platform LL_UART support to rely on
CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT from Kconfig

Signed-off-by: Alain Volmat <avolmat@me.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2021-02-01 19:41:31 +00:00
Dmitry Osipenko
538eea5362 ARM: 9043/1: tegra: Fix misplaced tegra_uart_config in decompressor
The tegra_uart_config of the DEBUG_LL code is now placed right at the
start of the .text section after commit which enabled debug output in the
decompressor. Tegra devices are not booting anymore if DEBUG_LL is enabled
since tegra_uart_config data is executes as a code. Fix the misplaced
tegra_uart_config storage by embedding it into the code.

Cc: stable@vger.kernel.org
Fixes: 2596a72d33 ("ARM: 9009/1: uncompress: Enable debug in head.S")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2021-01-29 11:34:40 +00:00
Florian Fainelli
d5d5b7f3e2 ARM: brcmstb: Add debug UART entry for 72116
72116 has the same memory map as 7255 and the same physical address for
the UART, alias the definition accordingly.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2021-01-21 12:09:11 -08:00
Arnd Bergmann
f3a732843a ARM: remove sirf prima2/atlas platforms
The SiRF Prima2 and Atlas platform code was contributed by Cambridge
Silicon Radio (CSR) after aquiring the original SiRF company, and
maintained by Barry Song. CSR was subsequently acquired by Qualcomm,
who no longer have an interest in maintaining the SoC platform but
instead have released more recent SoCs for the same market in the
Snapdragon family.

As Barry is no longer working for the company, nobody else there
wants to maintain it, and there are no third-party users, the
best way forward seems to be to completely remove it.

Thanks to Barry for maintaining the platform for the past ten years.

Cc: Barry Song <baohua@kernel.org>
Link: https://lore.kernel.org/lkml/c969392572604b98bcb3be44048c3165@hisilicon.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-01-20 09:41:37 +01:00
Uwe Kleine-König
cc6111375c ARM: drop efm32 platform
I didn't touch this code since it served as a platform to introduce
ARMv7-M support to Linux. The only known machine that runs Linux has only
4 MiB of RAM (that originally only exists to hold the display's framebuffer).

There are no known users and no further use foreseeable, so drop the
code.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210115155130.185010-2-u.kleine-koenig@pengutronix.de'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-01-15 17:42:10 +01:00
Linus Torvalds
e731f3146f ARM: SoC platform updates
SoC changes, a substantial part of this is cleanup of some of the older
 platforms that used to have a bunch of board files. In particular:
 
  - Removal of non-DT i.MX platforms that haven't seen activity in years,
    it's time to remove them.
  - A bunch of cleanup and removal of platform data for TI/OMAP platforms,
    moving over to genpd for power/reset control (yay!)
  - Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
    closer to multiplatform support (not quite there yet, but getting
    close).
 
 THere are a few other changes too, smaller fixlets, etc. For new
 platform support, the primary ones re:
 
  - New SoC: Hisilicon SD5203, ARM926EJ-S platform.
  - Cpufreq support for i.MX7ULP
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC platform updates from Olof Johansson:
 "SoC changes, a substantial part of this is cleanup of some of the
  older platforms that used to have a bunch of board files.

  In particular:

   - Remove non-DT i.MX platforms that haven't seen activity in years,
     it's time to remove them.

   - A bunch of cleanup and removal of platform data for TI/OMAP
     platforms, moving over to genpd for power/reset control (yay!)

   - Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
     closer to multiplatform support (not quite there yet, but getting
     close).

  There are a few other changes too, smaller fixlets, etc. For new
  platform support, the primary ones are:

   - New SoC: Hisilicon SD5203, ARM926EJ-S platform.

   - Cpufreq support for i.MX7ULP"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits)
  ARM: mstar: Select MStar intc
  ARM: stm32: Replace HTTP links with HTTPS ones
  ARM: debug: add UART early console support for SD5203
  ARM: hisi: add support for SD5203 SoC
  ARM: omap3: enable off mode automatically
  clk: imx: imx35: Remove mx35_clocks_init()
  clk: imx: imx31: Remove mx31_clocks_init()
  clk: imx: imx27: Remove mx27_clocks_init()
  ARM: imx: Remove unused definitions
  ARM: imx35: Retrieve the IIM base address from devicetree
  ARM: imx3: Retrieve the AVIC base address from devicetree
  ARM: imx3: Retrieve the CCM base address from devicetree
  ARM: imx31: Retrieve the IIM base address from devicetree
  ARM: imx27: Retrieve the CCM base address from devicetree
  ARM: imx27: Retrieve the SYSCTRL base address from devicetree
  ARM: s3c64xx: bring back notes from removed debug-macro.S
  ARM: s3c24xx: fix Wunused-variable warning on !MMU
  ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
  MAINTAINERS: mark linux-samsung-soc list non-moderated
  ARM: imx: Remove remnant board file support pieces
  ...
2020-10-24 10:33:08 -07:00
Linus Walleij
4df24fef09 ARM: 9005/1: debug: Select flow control for all debug UARTs
Instead of a flow control selection mechanism specifically for
8250, make this available for all debug UARTs. If the debug
UART supports waiting for CTS to be asserted, then this code
can be activated for terminals that need it.

We keep the defaults for EBSA110, Footbridge, Gemini and RPC
so that this still works as expected for these older platforms:
they assume that flow control shall be enabled for debug
prints.

I switch the location of the check for
ifdef CONFIG_DEBUG_UART_FLOW_CONTROL from the actual debug
UART drivers: the code would get compiled-out for 8250 and
Tegra unless their custom config (or passing -DFLOW_CONTROL
in the Tegra case) was not set. Instead this is conditional
at the three places where we print debug messages. The idea
is that debug UARTs can be implemented without this ifdef
boilerplate so they look cleaner, alas the ifdef has to be
somewhere.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2020-09-15 14:35:28 +01:00
Linus Walleij
2c50a570e9 ARM: 9004/1: debug: Split waituart to CTS and TXRDY
This patch was triggered by a remark from Russell that
introducing a call to the waituart (needed to fix debug prints
on the Qualcomm platforms) was dangerous because in some cases
this will involve waiting for a modem CTS (clear to send)
signal, and debug messages would maybe not work on platforms
with no modem connected to the UART port: they will just
hang waiting for the modem to assert CTS and this might never
happen.

Looking through all UART debug drivers implementing the waituart
macro I discovered that all users except two actually use this
macro to check if the UART is ready for TX, let's call this
TXRDY.

Only two debug UART drivers actually check for CTS:
- arch/arm/include/debug/8250.S
- arch/arm/include/debug/tegra.S

The former is very significant since the 8250 is possibly
the most common UART on the planet.

We have the following problem: the semantics of waituart are
ambiguous making it dangerous to introduce the macro to debug
code fixing debug prints for Qualcomm. To start to pry this
problem apart, this patch does the following:

- Convert all debug UART drivers to define two macros:

  - waituartcts with the clear semantic to wait for CTS
    to be asserted

  - waituarttxrdy with the clear semantic to wait for the TX
    capability of the UART to be ready

- When doing this take care to assign the right function to
  each drivers macro, so they now do exactly the above.

- Update the three sites in the kernel invoking the waituart
  macro to call waituartcts/waituarttxrdy in sequence, so that
  the functional impact on the kernel should be zero.

After this we can start to change the code sites using this
code to do the right thing.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2020-09-15 14:35:27 +01:00
Florian Fainelli
4e5cafa8b3 ARM: brcmstb: Add debug UART entry for 72615
72165 has the same memory map as 7278 and the same physical address for
the UART, alias the definition accordingly.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2020-09-04 13:42:16 -07:00
Florian Fainelli
6b84ca265f ARM: brcmstb: Add debug UART entry for 72614
72164 has the same memory map as 7278 and the same physical address for
the UART, alias the definition accordingly.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2020-08-17 09:20:34 -07:00
Erwan Le Ray
62c1594d38 ARM: debug: stm32: add UART early console support for STM32MP1
Add support of early console for STM32MP1. Default UART instance is UART4,
but other UART instances can be configured by setting physical and virtual
base addresses in menuconfig.

Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
2020-03-13 17:05:07 +01:00
Erwan Le Ray
33cab8954a ARM: debug: stm32: add UART early console support for STM32H7
Add support of early console for STM32H7. Default UART instance is USART1,
but other UART instances can be configured by setting physical and virtual
base addresses in menuconfig.

Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
2020-03-13 17:05:07 +01:00
Erwan Le Ray
79d5cfd19d ARM: debug: stm32: add UART early console configuration for STM32F4
Early console is hardcoded on USART1 in current implementation.
With this patch, default UART instance is USART1, but other UART instances
can be configured by setting physical and virtual base addresses in
menuconfig.

Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
2020-03-13 17:05:07 +01:00
Justin Chen
064f42b28a ARM: brcmstb: Add debug UART entry for 7216
7216 has the same memory map as 7278 and the same physical address for
the UART, alias the definition accordingly.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
[florian: expand commit message]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2019-12-20 10:54:05 -08:00
Arnd Bergmann
9e38081e5d Renesas ARM SoC updates for v5.4
- Low-level debugging support for RZ/A2M.
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Merge tag 'renesas-arm-soc-for-v5.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel into arm/soc

Renesas ARM SoC updates for v5.4

  - Low-level debugging support for RZ/A2M.

* tag 'renesas-arm-soc-for-v5.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel:
  ARM: debug-ll: Add support for r7s9210

Link: https://lore.kernel.org/r/20190823123643.18799-3-geert+renesas@glider.be
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-09-03 23:12:58 +02:00
Geert Uytterhoeven
e9670ccb39 ARM: debug-ll: Add support for r7s9210
Enable low-level debugging support for RZ/A2M (r7s9210).

The RZA2MEVB board uses either SCIF2 (SDRAM enabled) or SCIF4 (HyperRAM
only) for the serial console.

Note that "SCIFA" serial ports on RZ/A2 SoCs use a compressed register
layout, hence add support for that to renesas-scif.S.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
2019-08-21 11:15:26 +02:00
Arnd Bergmann
a3950da161 Merge tag 'ux500-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into arm/soc
This is a slew of Ux500 updates for the v5.4 kernel cycle:

- Stop populating the PRCMU devices from the core CPU
  file, it works just fine at device_initcall() level.

- Add a missing of_node_put() in the core file.

- Simplify the debug UART code.

- Add myself to MAINTAINERS

* tag 'ux500-v5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  MAINTAINERS: add soc/ux500
  ARM: ux500: simplify and move debug UART
  ARM: ux500: add missing of_node_put()
  ARM: ux500: Stop populating the PRCMU devices early

Link: https://lore.kernel.org/r/CACRpkdbH-h5fRwuidcpeOp8mtRoKUW65SAk8a4A==BCDzn3QMA@mail.gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-08-14 15:37:17 +02:00
Arnd Bergmann
c68b26697d ARM: remove ks8695 platform
ks8695 is an older SoC originally made by Kendin, which was later acquired
by Micrel, and subsequently by Microchip.

The platform port was originally contributed by Andrew Victor and Ben
Dooks, and later maintained by Greg Ungerer.

When I recently submitted cleanups, but Greg noted that the platform no
longer boots and nobody is using it any more, we decided to remove it.

Link: https://lore.kernel.org/r/20190809202749.742267-2-arnd@arndb.de
Cc: Andrew Victor <linux@maxim.org.za>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Link: https://wikidevi.com/wiki/Micrel
Link: https://lore.kernel.org/linux-arm-kernel/2bc41895-d4f9-896c-0726-0b2862fcbf25@kernel.org/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-08-14 15:03:52 +02:00
Linus Walleij
428b504e84 ARM: ux500: simplify and move debug UART
The debug UART code defined three different virtual addresses
while only one is ever used. Get rid of this, and move the
UART remapping to 0xfffe8000 where DTCM reside on some platforms
but not on Ux500, so it can be reused moving the UART out of the
vmalloc area.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-07-23 10:44:14 +02:00
Linus Torvalds
24e44913aa ARM: SoC platform updates
SoC platform changes. Main theme this merge window:
 
  - The Netx platform (Netx 100/500) platform is removed by Linus Walleij--
    the SoC doesn't have active maintainers with hardware, and in
    discussions with the vendor the agreement was that it's OK to remove.
 
  - Russell King has a series of patches that cleans up and refactors
    SA1101 and RiscPC support.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes. Main theme this merge window:

   - The Netx platform (Netx 100/500) platform is removed by Linus
     Walleij-- the SoC doesn't have active maintainers with hardware,
     and in discussions with the vendor the agreement was that it's OK
     to remove.

   - Russell King has a series of patches that cleans up and refactors
     SA1101 and RiscPC support"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: stm32: use "depends on" instead of "if" after prompt
  ARM: sa1100: convert to common clock framework
  ARM: exynos: Cleanup cppcheck shifting warning
  ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view
  ARM: exynos: Only build MCPM support if used
  arm: add missing include platform-data/atmel.h
  ARM: davinci: Use GPIO lookup table for DA850 LEDs
  ARM: OMAP2: drop explicit assembler architecture
  ARM: use arch_extension directive instead of arch argument
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB
  ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  MAINTAINERS: mvebu: Add git entry
  soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh
  ARM: OMAP2+: Make some variables static
  ...
2019-07-19 17:05:08 -07:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Olof Johansson
6ad135992e This deletes the NetX 100/500 machine support.
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Merge tag 'armsoc-drop-netx-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into arm/soc

This deletes the NetX 100/500 machine support.

After discussing with the subarch maintainers and Hilscher,
we concluded that the netx subarchitecture (Netx 100/500)
is no longer maintained or tested, and noone will miss it
if we delete it. So delete it.

There is a newer Netx 4000 architecture which we may see
included at some point, but this will be supported using
the standard multiplatform and devicetree mechanisms and is
easier to develop from scratch.

* tag 'armsoc-drop-netx-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: delete netx machine

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-06-17 05:09:55 -07:00
Thomas Gleixner
9c92ab6191 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
Based on 1 normalized pattern(s):

  this software is licensed under the terms of the gnu general public
  license version 2 as published by the free software foundation and
  may be copied distributed and modified under those terms this
  program is distributed in the hope that it will be useful but
  without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 285 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:36:37 +02:00
Thomas Gleixner
2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Linus Walleij
ceb02dcf67 ARM: delete netx machine
After discussing with the subarch maintainers and Hilscher,
we concluded that the netx subarchitecture (Netx 100/500)
is no longer maintained or tested, and noone will miss it
if we delete it. So delete it.

There is a newer Netx 4000 architecture which we may see
included at some point, but this will be supported using
the standard multiplatform and devicetree mechanisms and is
easier to develop from scratch.

Cc: Michael Trensch <MTrensch@hilscher.com>
Acked-By: Robert Schwebel <r.schwebel@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-05-22 13:55:50 +02:00
Thomas Gleixner
a636cd6c42 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4
Based on 1 normalized pattern(s):

  licensed under gplv2 or later

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 118 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190519154040.961286471@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 11:28:40 +02:00
Stefan Agner
e44fc38818 ARM: 8844/1: use unified assembler in assembly files
Use unified assembler syntax (UAL) in assembly files. Divided
syntax is considered deprecated. This will also allow to build
the kernel using LLVM's integrated assembler.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2019-02-26 11:26:07 +00:00
Olof Johansson
ac21e9af5a This pull request contains Broadcom ARM-based SoCs machine files updates
for 4.21, please pull the following:
 
 - Stefan switches relevant BCM283x files under arch/arm/mach-bcm to the
   SPDX license identifiers
 
 - Justin adds an entry in the Broadcom STB debug LL stub for 7255
 
 - Florian enables reset controller support for BCM63xx SoCs
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Merge tag 'arm-soc/for-4.21/soc' of https://github.com/Broadcom/stblinux into next/soc

This pull request contains Broadcom ARM-based SoCs machine files updates
for 4.21, please pull the following:

- Stefan switches relevant BCM283x files under arch/arm/mach-bcm to the
  SPDX license identifiers

- Justin adds an entry in the Broadcom STB debug LL stub for 7255

- Florian enables reset controller support for BCM63xx SoCs

* tag 'arm-soc/for-4.21/soc' of https://github.com/Broadcom/stblinux:
  ARM: mach-bcm: Switch bcm2835 and platsmp to SPDX identifier
  ARM: BCM63XX: Enable reset controller support
  ARM: brcmstb: Add entry for 7255

Signed-off-by: Olof Johansson <olof@lixom.net>
2018-12-03 13:09:38 -08:00
Gerald Baeza
d88bb418b7 ARM: stm32: debug: add low-level debug support
This adds low-level debug support on USART1 for STM32F4
and STM32F7.
Compiled via 'CONFIG_DEBUG_LL' and 'CONFIG_EARLY_PRINTK'.
Enabled via 'earlyprintk' in bootargs.

Signed-off-by: Gerald Baeza <gerald.baeza@st.com>
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2018-11-12 10:20:41 -08:00
Justin Chen
8f34fe4a89 ARM: brcmstb: Add entry for 7255
Add in BCM7255 entry and reorder entries to keep ascending order. Also
moved 7278 cause it was out of order.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2018-11-06 16:40:59 -08:00
Wolfram Sang
c44e182e53 ARM: shmobile: convert to SPDX identifier
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2018-06-18 12:00:29 +02:00
Doug Berger
56e4446df9 ARM: brcmstb: Add support for the V7 memory map
The 7278 device is the first device that includes support for the V7
memory map developed for use in 64-bit architecture brcmstb devices.
This map relocates the register physical offset from 0xF0000000 to
0x0000000008000000.

Since the ARM PERIPHBASE value is also relocated in the V7 memory map
we can use its value to determine whether this device uses the new
V7 memory map and therefore where to look for the SUN_TOP_CTRL
register used to identify the chip family.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2018-05-09 12:14:42 -07:00
Krzysztof Kozlowski
f947153f92 ARM: EXYNOS: Add SPDX license identifiers
Replace GPL license statements with SPDX GPL-2.0 and GPL-2.0+ license
identifiers.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-02-12 19:55:21 +01:00
Linus Torvalds
8c60969856 ARM: SoC platform updates for 4.15
Most of the commits are for defconfig changes, to enable newly added
 drivers or features that people have started using. For the changed
 lines lines, we have mostly cleanups, the affected platforms are
 OMAP, Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions.
 
 The largest single change is the introduction of the TI "sysc" bus
 driver, with the intention of cleaning up more legacy code.
 
 Two new SoC platforms get added this time:
 - Allwinner R40 is a modernized version of the A20 chip, now
   with a Quad-Core ARM Cortex-A7. According to the manufacturer,
   it is intended for "Smart Hardware"
 - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family
   of chips meant for managed gigabit ethernet switches, based
   around a Cortex-A9 CPU.
 
 Finally, we gain SMP support for two platforms: Renesas R-Car E2
 and Amlogic Meson8/8b, which were previously added but only supported
 uniprocessor operation.
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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:
 "Most of the commits are for defconfig changes, to enable newly added
  drivers or features that people have started using. For the changed
  lines lines, we have mostly cleanups, the affected platforms are OMAP,
  Versatile, EP93xx, Samsung, Broadcom, i.MX, and Actions.

  The largest single change is the introduction of the TI "sysc" bus
  driver, with the intention of cleaning up more legacy code.

  Two new SoC platforms get added this time:

   - Allwinner R40 is a modernized version of the A20 chip, now with a
     Quad-Core ARM Cortex-A7. According to the manufacturer, it is
     intended for "Smart Hardware"

   - Broadcom Hurricane 2 (Aka Strataconnect BCM5334X) is a family of
     chips meant for managed gigabit ethernet switches, based around a
     Cortex-A9 CPU.

  Finally, we gain SMP support for two platforms: Renesas R-Car E2 and
  Amlogic Meson8/8b, which were previously added but only supported
  uniprocessor operation"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (118 commits)
  ARM: multi_v7_defconfig: Select RPMSG_VIRTIO as module
  ARM: multi_v7_defconfig: enable CONFIG_GPIO_UNIPHIER
  arm64: defconfig: enable CONFIG_GPIO_UNIPHIER
  ARM: meson: enable MESON_IRQ_GPIO in Kconfig for meson8b
  ARM: meson: Add SMP bringup code for Meson8 and Meson8b
  ARM: smp_scu: allow the platform code to read the SCU CPU status
  ARM: smp_scu: add a helper for powering on a specific CPU
  dt-bindings: Amlogic: Add Meson8 and Meson8b SMP related documentation
  ARM: OMAP3: Delete an unnecessary variable initialisation in omap3xxx_hwmod_init()
  ARM: OMAP3: Use common error handling code in omap3xxx_hwmod_init()
  ARM: defconfig: select the right SX150X driver
  arm64: defconfig: Enable QCOM_IOMMU
  arm64: Add ThunderX drivers to defconfig
  arm64: defconfig: Enable Tegra PCI controller
  cpufreq: imx6q: Move speed grading check to cpufreq driver
  arm64: defconfig: re-enable Qualcomm DB410c USB
  ARM: configs: stm32: Add MDMA support in STM32 defconfig
  ARM: imx: Enable cpuidle for i.MX6DL starting at 1.1
  bus: ti-sysc: Fix unbalanced pm_runtime_enable by adding remove
  bus: ti-sysc: mark PM functions as __maybe_unused
  ...
2017-11-16 14:05:12 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Florian Fainelli
c149635215 ARM: brcmstb: Add appropriate ARM_BE8() macros for swapping
Building a big-endian kernel for ARCH_BRCMSTB revealed that we would not
be correctly polling for the right bit in the busyuart macro, turns out
there are a few transformations needed to work with big-endian kernels.
First we need to swap the value we read from SUN_TOP_CTRL to properly
compare it against our local tables. Then, just like 8250.S we need to
swap the value before storing it, and conversely swap it after a load.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-09-25 11:56:04 -07:00
Linus Torvalds
8fac2f96ab Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
 "Low priority fixes and updates for ARM:

   - add some missing includes

   - efficiency improvements in system call entry code when tracing is
     enabled

   - ensure ARMv6+ is always built as EABI

   - export save_stack_trace_tsk()

   - fix fatal signal handling during mm fault

   - build translation table base address register from scratch

   - appropriately align the .data section to a word boundary where we
     rely on that data being word aligned"

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8691/1: Export save_stack_trace_tsk()
  ARM: 8692/1: mm: abort uaccess retries upon fatal signal
  ARM: 8690/1: lpae: build TTB control register value from scratch in v7_ttb_setup
  ARM: align .data section
  ARM: always enable AEABI for ARMv6+
  ARM: avoid saving and restoring registers unnecessarily
  ARM: move PC value into r9
  ARM: obtain thread info structure later
  ARM: use aliases for registers in entry-common
  ARM: 8689/1: scu: add missing errno include
  ARM: 8688/1: pm: add missing types include
2017-09-12 06:10:44 -07:00
Russell King
1abd350237 ARM: align .data section
Robert Jarzmik reports that his PXA25x system fails to boot with 4.12,
failing at __flush_whole_cache in arch/arm/mm/proc-xscale.S:215:

   0xc0019e20 <+0>:     ldr     r1, [pc, #788]
   0xc0019e24 <+4>:     ldr     r0, [r1]	<== here

with r1 containing 0xc06f82cd, which is the address of "clean_addr".
Examination of the System.map shows:

c06f22c8 D user_pmd_table
c06f22cc d __warned.19178
c06f22cd d clean_addr

indicating that a .data.unlikely section has appeared just before the
.data section from proc-xscale.S.  According to objdump -h, it appears
that our assembly files default their .data alignment to 2**0, which
is bad news if the preceding .data section size is not power-of-2
aligned at link time.

Add the appropriate .align directives to all assembly files in arch/arm
that are missing them where we require an appropriate alignment.

Reported-by: Robert Jarzmik <robert.jarzmik@free.fr>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2017-08-14 16:22:55 +01:00
Tony Lindgren
51ef70037e ARM: debug: Use generic 8250 debug_ll for am3517 and am335x
We want to use generic 8250 debug_ll code to get DEBUG_UNCOMPRESS
working and to simplify the code. The old debug_ll code is no longer
needed and the machine ID based detection is no longer used.

Note that for most part there's no need to keep DEBUG_LL enabled.
We now have CONFIG_SERIAL_EARLYCON working very early as long as
the kernel cmdline has "earlycon" in it and the board specific dts
file has chosen configured with with the port using stdout-path.

Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-07-17 00:53:42 -07:00
Tony Lindgren
2d1f7d2e24 ARM: debug: Use generic 8250 debug_ll for ti81xx
We want to use generic 8250 debug_ll code to get DEBUG_UNCOMPRESS
working and to simplify the code. The old debug_ll code is no longer
needed and the machine ID based detection is no longer used.

Note that for most part there's no need to keep DEBUG_LL enabled.
We now have CONFIG_SERIAL_EARLYCON working very early as long as
the kernel cmdline has "earlycon" in it and the board specific dts
file has chosen configured with with the port using stdout-path.

Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-07-17 00:51:46 -07:00
Tony Lindgren
fc23beb8a5 ARM: debug: Use generic 8250 debug_ll for omap3/4/5
We want to use generic 8250 debug_ll code to get DEBUG_UNCOMPRESS
working and to simplify the code. The old debug_ll code is no longer
needed and the machine ID based detection is no longer used.

Note that for most part there's no need to keep DEBUG_LL enabled.
We now have CONFIG_SERIAL_EARLYCON working very early as long as
the kernel cmdline has "earlycon" in it and the board specific dts
file has chosen configured with with the port using stdout-path.

Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-07-17 00:49:08 -07:00
Tony Lindgren
d2b310b023 ARM: debug: Use generic 8250 debug_ll for omap2 and omap3/4/5 common uarts
We want to use generic 8250 debug_ll code to get DEBUG_UNCOMPRESS
working and to simplify the code. The old debug_ll code is no longer
needed and the machine ID based detection is no longer used.

Note that for most part there's no need to keep DEBUG_LL enabled.
We now have CONFIG_SERIAL_EARLYCON working very early as long as
the kernel cmdline has "earlycon" in it and the board specific dts
file has chosen configured with with the port using stdout-path.

Cc: Hoeun Ryu <hoeun.ryu@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-07-17 00:35:39 -07:00
Florian Fainelli
d47b51ad31 ARM: brcmstb: Add entry for 7260
BCM7260 has the same UART base address as 7268, order the entries by
ascending chip number and alias the 7268 definition to the 7260
definition.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-03-15 14:57:50 -07:00
Florian Fainelli
d0cf9d8a3c ARM: brcmstb: Add earlyprintk support using run-time checks
The SUN_TOP_CTRL_FAMILY_ID register  is at a fixed absolute address for
all of our supported chips, so utilize its value to determine what the
UARTA base address should be based on the value we read.

Since the code is called both during decompressor when the MMU is off,
and after the MMU has been turned on in the kernel, and we want to do
the lookup only once, we use the same technique as tegra.S and have a
shared storage location between the decompressor and the kernel.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2016-08-08 11:14:09 -07:00
Alexander Shiyan
32981ea5b9 ARM: clps711x: Reduce static map size
Last CLPS711X CPU register is PLLR has 0xa5a8 address, so we can reduce
the map to 48k and align the end of the static at VMALLOC_START.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-07-06 17:38:52 +02:00
Olof Johansson
553228d073 Samsung mach/soc update for v4.8, part 2:
1. Endian-friendly fixes.
 2. Maintainers update.
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Merge tag 'samsung-soc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/soc

Samsung mach/soc update for v4.8, part 2:
1. Endian-friendly fixes.
2. Maintainers update.

* tag 'samsung-soc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  MAINTAINERS: Extend Samsung SoC entry with S3C/S5P drivers
  ARM: SAMSUNG: Fix missing s5p_init_cpu() declaration
  ARM: EXYNOS: Fix UART address selection for DEBUG_LL
  ARM: EXYNOS: Fixup for __raw operations in suspend.c
  ARM: SAMSUNG: Fixup usage of __raw IO in PM
  ARM: EXYNOS: Fixup endian in pm/pmu
  ARM: EXYNOS: Fixups for big-endian operation
  ARM: SAMSUNG: Fixup endian issues in CPU detection
  ARM: EXYNOS: Fixup debug macros for big-endian
  ARM: s3c24xx: Sort cpufreq tables
  ARM: SAMSUNG: Fix typos

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-07-05 22:41:01 -07:00
Joonyoung Shim
2f3428b5cf ARM: EXYNOS: Fix UART address selection for DEBUG_LL
The Exynos542x SoCs using A15+A7 can boot to A15 or A7. If it boots using
A7 (like on Odroid XU family boards), it can't choose right UART
physical address only the part number of CP15. Fix the detection logic
by checking the Cluster ID additionally.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
[k.kozlowski: Extend commit message]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-06-22 08:20:43 +02:00