Pull ARM updates from Russell King:
- Major clean-up of the L2 cache support code. The existing mess was
becoming rather unmaintainable through all the additions that others
have done over time. This turns it into a much nicer structure, and
implements a few performance improvements as well.
- Clean up some of the CP15 control register tweaks for alignment
support, moving some code and data into alignment.c
- DMA properties for ARM, from Santosh and reviewed by DT people. This
adds DT properties to specify bus translations we can't discover
automatically, and to indicate whether devices are coherent.
- Hibernation support for ARM
- Make ftrace work with read-only text in modules
- add suspend support for PJ4B CPUs
- rework interrupt masking for undefined instruction handling, which
allows us to enable interrupts earlier in the handling of these
exceptions.
- support for big endian page tables
- fix stacktrace support to exclude stacktrace functions from the
trace, and add save_stack_trace_regs() implementation so that kprobes
can record stack traces.
- Add support for the Cortex-A17 CPU.
- Remove last vestiges of ARM710 support.
- Removal of ARM "meminfo" structure, finally converting us solely to
memblock to handle the early memory initialisation.
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits)
ARM: ensure C page table setup code follows assembly code (part II)
ARM: ensure C page table setup code follows assembly code
ARM: consolidate last remaining open-coded alignment trap enable
ARM: remove global cr_no_alignment
ARM: remove CPU_CP15 conditional from alignment.c
ARM: remove unused adjust_cr() function
ARM: move "noalign" command line option to alignment.c
ARM: provide common method to clear bits in CPU control register
ARM: 8025/1: Get rid of meminfo
ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type
ARM: 8066/1: correction for ARM patch 8031/2
ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
ARM: 8065/1: remove last use of CONFIG_CPU_ARM710
ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction
ARM: 8047/1: rwsem: use asm-generic rwsem implementation
ARM: l2c: trial at enabling some Cortex-A9 optimisations
ARM: l2c: add warnings for stuff modifying aux_ctrl register values
ARM: l2c: print a warning with L2C-310 caches if the cache size is modified
ARM: l2c: remove old .set_debug method
ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this
...
A quite large set of SoC updates this cycle. In no particular order:
- Multi-cluster power management for Samsung Exynos, adding support for
big.LITTLE CPU switching on EXYNOS5
- SMP support for Marvell Armada 375 and 38x
- SMP rework on Allwinner A31
- Xilinx Zynq support for SOC_BUS, big endian
- Marvell orion5x platform cleanup, modernizing the implementation and
moving to DT.
- _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
that their platform can be enabled in the same kernel binary as most
of the other v7 platforms in the tree. \o/ The work isn't quite complete,
there's some driver fixes still needed, but the basics now work.
New SoC support added:
- Freescale i.MX6SX
- LSI Axxia AXM55xx SoCs
- Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
- STi STIH407
Plus a large set of various smaller updates for different platforms. I'm
probably missing some important one here.
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Merge tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next
Pull part one of ARM SoC updates from Olof Johansson:
"A quite large set of SoC updates this cycle. In no particular order:
- Multi-cluster power management for Samsung Exynos, adding support
for big.LITTLE CPU switching on EXYNOS5
- SMP support for Marvell Armada 375 and 38x
- SMP rework on Allwinner A31
- Xilinx Zynq support for SOC_BUS, big endian
- Marvell orion5x platform cleanup, modernizing the implementation
and moving to DT.
- _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
that their platform can be enabled in the same kernel binary as
most of the other v7 platforms in the tree. \o/
The work isn't quite complete, there's some driver fixes still
needed, but the basics now work.
New SoC support added:
- Freescale i.MX6SX
- LSI Axxia AXM55xx SoCs
- Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
- STi STIH407
plus a large set of various smaller updates for different platforms.
I'm probably missing some important one here"
* tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (281 commits)
ARM: exynos: don't run exynos4 l2x0 setup on other platforms
ARM: exynos: Fix "allmodconfig" build errors in mcpm and hotplug
ARM: EXYNOS: mcpm rename the power_down_finish
ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC
ARM: EXYNOS: Enable multi-platform build support
ARM: EXYNOS: Consolidate Kconfig entries
ARM: EXYNOS: Add support for EXYNOS5410 SoC
ARM: EXYNOS: Support secondary CPU boot of Exynos3250
ARM: EXYNOS: Add Exynos3250 SoC ID
ARM: EXYNOS: Add 5800 SoC support
ARM: EXYNOS: initial board support for exynos5260 SoC
clk: exynos5410: register clocks using common clock framework
ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084
ARM: sunxi: allow building without reset controller
Documentation: devicetree: arm: sort enable-method entries
ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE
clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks
ARM: dts: axxia: Add reset controller
power: reset: Add Axxia system reset driver
ARM: axxia: Adding defconfig for AXM55xx
...
Remove the explicit call to l2x0_of_init(), converting to the generic
infrastructure instead. We can remove the explicit machine init too
as this becomes identical to the generic version.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
When targetting ARCH_MULTIPLATFORM, we may include support for SoCs with
PCI-capable devices (e.g. mach-virt with virtio-pci).
This patch allows PCI support to be selected for these SoCs by selecting
CONFIG_MIGHT_HAVE_PCI when CONFIG_ARCH_MULTIPLATFORM=y and removes the
individual selections from multi-platform enabled SoCs.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
* only show ARCH_BCM in multi v6/v7 configs
* enable ARM erratum 775420
* bcm_defconfig updates for pwm
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Merge tag 'for-3.16/bcm-soc' of git://github.com/broadcom/mach-bcm into next/soc
Merge "mach-bcm 3.16 soc updates" From Matt Porter:
* only show ARCH_BCM in multi v6/v7 configs
* enable ARM erratum 775420
* bcm_defconfig updates for pwm
* tag 'for-3.16/bcm-soc' of git://github.com/broadcom/mach-bcm:
ARM: bcm_defconfig: Enable PWM and Backlight
ARM: mach-bcm: add ARM_ERRATA_775420
ARM: bcm: Restrict ARCH_BCM selection to ARCH_MULTI_V6_V7
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Clean up bcm281xx/21664 SMC code
* Clean up bcm281xx/21664 L2C code
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Merge tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm into next/cleanup
* Clean up mach-bcm config and build targets
* Clean up bcm281xx/21664 SMC code
* Clean up bcm281xx/21664 L2C code
* tag 'for-3.16/bcm-cleanup' of git://github.com/broadcom/mach-bcm:
ARM: bcm: rename "kona.h" and "kona.c"
ARM: bcm: rewrite commentary for bcm_kona_do_smc()
ARM: bcm: use inline assembly for "smc" request
ARM: bcm: tidy up a few includes
ARM: bcm: config option for l2 cache support
ARM: bcm: don't special-case CPU 0 in bcm_kona_smc()
ARM: bcm: have bcm_kona_smc() return request result
ARM: bcm: clean up SMC code
ARM: bcm: err, don't BUG() on SMC init failures
ARM: bcm: use memory accessors for ioremapped area
ARM: bcm: clean up config and build targets
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Conflicts:
arch/arm/mach-bcm/Kconfig
They're u32, they're not unsigned long. The UL suffix is not required
here.
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM_ERRATA_775420 needs to be enabled.
A data cache maintenance operation which aborts, followed by an ISB,
without any DSB in-between, might lead to deadlock.
Affects: bug present in Cortex-A9 r3p0 and earlier. Fixed in r4p0.
Cortex-A9 r3p0 is used in a multitude of Broadcom parts including
the bcm21664, bcm281xx, 5301x families of devices.
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Tested-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Currently, Broadcom SoC options are shown whenever ARCH_MULTIPLATFORM
is enabled. Restrict this so they are only seen when ARCH_MULTI_V6_V7
variants are enabled.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
[mporter: added commit log message]
Signed-off-by: Matt Porter <mporter@linaro.org>
These source files contain only level-2 cache initialization code,
so rename them to make that fact more obvious.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
The block of comments in bcm_kona_do_smc() are somewhat confusing.
This patch attempts to clarify what's going on.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Move the code that implements the "smc" call into a C function that
uses inline assembly. This allows us to make that function private,
and enables us to get rid of "arch/arm/mach-bcm/bcm_kona_smc_asm.S".
Rename what had been the "buffer_addr" argument to be "buffer_phys"
so it's consistent with other usage in this file.
Since it's now easy to do, verify that r12 contains SEC_EXIT_NORMAL
upon completion of the SMC. There really isn't a good way to handle
the abnormal completion of a secure monitor request.
Since "bcm_kona_smc.h" is now only included from C files, eliminate
the #ifndef __ASSEMBLY__.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Clean up a few header file includes, eliminating a few that are not
really needed and putting in their place some that are.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Add a new config option ARCH_BCM_MOBILE_L2_CACHE that allows support
for level-2 cache to be enabled or disabled at build time for
BCM218XX and BCM21664 family SoCs.
Build support for SMC only if it's required (currently it's only
required for to support level 2 cache control).
If arch/arm/mach-bcm/kona.c gets compiled, ARCH_BCM_MOBILE_L2_CACHE
must have been selected, which implies CONFIG_CACHE_L2X0 is set.
There is therefore no need to check CONFIG_CACHE_L2X0 at the top
of kona_l2_cache_init(), so get rid of that check.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
There's logic in bcm_kona_smc() to ensure __bcm_kona_smc() gets
called on CPU 0; if already executing on CPU 0, that function is
called directly. The direct call is not protected from interrupts,
however, which is not safe.
Note that smp_call_function_single() is designed to handle the case
where the target cpu is the current one. It also gets a reference
to the CPU and disables IRQs across the call.
So we can simplify things and at the same time be protected against
interrupts by calling smp_call_function_single() unconditionally.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Currently it is assumed that SEC_ROM_RET_OK is the only valid "good"
result of a secure monitor request. However the values that can be
returned by a secure monitor request are dependent on which service
id was provided.
We therefore should handle the result in a request-dependent way.
The most natural way to do that is to have the initiator of the
request--where bcm_kona_smc() is called--handle the result in a way
appropriate to the request.
An "smc" operation must be performed only on core 0, while the
request can be initiated from any core. To pass back the request
result, we add a new field to the bcm_kona_smc_data structure, and
have bcm_kona_smc() return that value rather than 0.
There's only one caller right now. Move the existing check of the
result out of __bcm_kona_smc() and into the kona_l2_cache_init()
where the SSAPI_ENABLE_L2_CACHE request is initiated.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This patch just does some simple cleanup in "bcm_kona_smc.c":
- Get rid of the secure_bridge_data structure. Instead, just
define two globals that record the physical and virtual
addresses of the SMC arguments buffer. Use "buffer" instead
of "bounce" in their names. Drop of the erroneous __iomem
annotation for the physical address.
- Get rid of the initialized flag and just use a non-null buffer
address to indicate that.
- Get the size of the memory region when fetching the SMC
arguments buffer location from the device tree. Use it to
call ioremap() directly rather than requiring of_iomap() to
go look it up again.
- Do some additional validation on that memory region size.
- Flush caches unconditionally in __bcm_kona_smc(); nothing
supplies SSAPI_BRCM_START_VC_CORE as a service id.
- Drop a needless initialization of "rc" in __bcm_kona_smc().
It also deletes most of the content of "bcm_kona_smc.h" because it's
never actually used and is of questionable value anyway.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Several conditions in bcm_kona_smc_init() are handled with BUG_ON().
That function is capable of returning an error, so do that instead.
Also, don't assume of_get_address() returns a valid pointer.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
The pointer used to pass parameters to an "smc" call is produced
through a call to ioremap(). As such, we should be using functions
like writel() to access it.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Currently CONFIG_ARCH_BCM_MOBILE is used to select all (both)
Broadcom mobile SoC families. Instead, use that only as a config
menu switch, and define specific symbols like ARCH_BCM_281XX to
select a particular SoC family. If ARCH_BCM_MOBILE is selected, all
of the SoCs will be selected by default, but this way each can be
disabled individually as well.
Note that BCM281xx and BCM21664 both require the SMC and L2 cache
control code, so that code will be built based on ARCH_BCM_MOBILE.
Signed-off-by: Alex Elder <elder@linaro.org>
[mporter: added ARM: to the description]
Signed-off-by: Matt Porter <mporter@linaro.org>
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: Christian Daudt <bcm@fixthebug.org>
Cc: Matt Porter <mporter@linaro.org>
Cc: bcm-kernel-feedback-list@broadcom.com
Lots of changes specific to one of the SoC families. Some that
stick out are:
* mach-qcom gains new features, most importantly SMP support for
the newer chips (Stephen Boyd, Rohit Vaswani)
* mvebu gains support for three new SoCs: Armada 375, 380 and 385
(Thomas Petazzoni and Free-electrons team)
* SMP support for Rockchips (Heiko Stübner)
* Lots of i.MX changes (Shawn Guo)
* Added support for BCM5301x SoC (Hauke Mehrtens)
* Multiplatform support for Marvell Kirkwood and Dove
(Andrew Lunn and Sebastian Hesselbarth doing the final part
of a long journey)
* Unify davinci platforms and remove obsolete ones (Sekhar Nori,
Arnd Bergmann)
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Merge tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC specific changes from Arnd Bergmann:
"Lots of changes specific to one of the SoC families. Some that stick
out are:
- mach-qcom gains new features, most importantly SMP support for the
newer chips (Stephen Boyd, Rohit Vaswani)
- mvebu gains support for three new SoCs: Armada 375, 380 and 385
(Thomas Petazzoni and Free-electrons team)
- SMP support for Rockchips (Heiko Stübner)
- Lots of i.MX changes (Shawn Guo)
- Added support for BCM5301x SoC (Hauke Mehrtens)
- Multiplatform support for Marvell Kirkwood and Dove (Andrew Lunn
and Sebastian Hesselbarth doing the final part of a long journey)
- Unify davinci platforms and remove obsolete ones (Sekhar Nori, Arnd
Bergmann)"
* tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (126 commits)
ARM: sunxi: Select HAVE_ARM_ARCH_TIMER
ARM: cache-tauros2: remove ARMv6 code
ARM: mvebu: don't select CONFIG_NEON
ARM: davinci: fix DT booting with default defconfig
ARM: configs: bcm_defconfig: enable bcm590xx regulator support
ARM: davinci: remove tnetv107x support
MAINTAINERS: Update ARM STi maintainers
ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
ARM: bcm21664: Add board support.
ARM: sunxi: Add the new watchog compatibles to the reboot code
ARM: enable ARM_HAS_SG_CHAIN for multiplatform
ARM: davinci: remove da8xx_omapl_defconfig
ARM: davinci: da8xx: fix multiple watchdog device registration
ARM: davinci: add da8xx specific configs to davinci_all_defconfig
ARM: davinci: enable da8xx build concurrently with older devices
ARM: BCM5301X: workaround suppress fault
ARM: BCM5301X: add early debugging support
ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU
ARM: mach-bcm: Remove GENERIC_TIME
ARM: shmobile: APMU: Fix warnings due to improper printk formats
...
- Add bcm21664 support
- Use Kona Debug UART only on ARCH_BCM_MOBILE
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Merge tag 'armsoc/for-3.15/soc-3' of git://github.com/broadcom/mach-bcm into next/soc
Merge "ARM: mach-bcm: soc updates for 3.15 - part 2" from Matt Porter:
- Add bcm21664 support
- Use Kona Debug UART only on ARCH_BCM_MOBILE
* tag 'armsoc/for-3.15/soc-3' of git://github.com/broadcom/mach-bcm:
ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
ARM: bcm21664: Add board support.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add support for the Broadcom BCM21664 mobile SoC. It has two Cortex-A9
cores like the BCM281xx family of chips. BCM21664 and BCM281xx share
many IP blocks in addition to the ARM cores.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This pull request consists of a single patch which moves files from
arch/arm/mach-bcm2835 into mach-bcm, thus consolidating them with
support for other Broadcom chips.
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Merge tag 'bcm2835-for-3.15-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi into next/cleanup
Merge "ARM: bcm2835: consolidate into mach-bcm/" from Stephen Warren:
This pull request consists of a single patch which moves files from
arch/arm/mach-bcm2835 into mach-bcm, thus consolidating them with
support for other Broadcom chips.
* tag 'bcm2835-for-3.15-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi:
ARM: bcm2835: Move to mach-bcm directory
Signed-off-by: Olof Johansson <olof@lixom.net>
- make bcm281xx symbol naming consistent with SoC name
- remove unneeded and reorder bcm281xx header files
- consolidate bcm281xx reboot and l2 cache code
#
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Merge tag 'armsoc/for-3.15/cleanup' of git://github.com/broadcom/mach-bcm into next/cleanup
Merge "ARM: mach-bcm: cleanups for 3.15" from Matt Porter:
- make bcm281xx symbol naming consistent with SoC name
- remove unneeded and reorder bcm281xx header files
- consolidate bcm281xx reboot and l2 cache code
* tag 'armsoc/for-3.15/cleanup' of git://github.com/broadcom/mach-bcm:
ARM: bcm281xx: Rename board_init() function
ARM: bcm281xx: Re-order hearder files
ARM: bcm281xx: Consolidate reboot code
ARM: bcm281xx: Move kona_l2_cache_init() so it can be shared
ARM: bcm281xx: symbol cleanup
Signed-off-by: Olof Johansson <olof@lixom.net>
- add BCM5301x support
- remove GENERIC_TIME
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Merge tag 'armsoc/for-3.15/soc-2' of git://github.com/broadcom/mach-bcm into next/soc
Merge "ARM: mach-bcm soc updates" from Matt Porter:
- add BCM5301x support
- remove GENERIC_TIME
* tag 'armsoc/for-3.15/soc-2' of git://github.com/broadcom/mach-bcm:
ARM: BCM5301X: workaround suppress fault
ARM: BCM5301X: add early debugging support
ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU
ARM: mach-bcm: Remove GENERIC_TIME
Signed-off-by: Olof Johansson <olof@lixom.net>
Rename board_init() to bcm281xx_init(), so the name reflects the board
specific nature of this function.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Consolidate reboot code and remove unnecessary functions.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
In preparation for future SoCs, move kona_l2_cache_init() from board
specific board_bcm281xx.c to shared kona.c, so multiple SoC families
can make use of it. Also change the return type to "void", since we
never look at the return code anyway.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This patch renames a few symbols that needlessly used "11351" rather
than "281xx" in their names.
Support for the bcm11351 board is being removed from the kernel, and
the family of boards is more properly referred to as "bcm281xx".
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Without this patch I am getting a unhandled fault exception like this
one after "Freeing unused kernel memory":
Freeing unused kernel memory: 1260K (c02c1000 - c03fc000)
Unhandled fault: imprecise external abort (0x1c06) at 0xb6f89005
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007
The address which is here 0xb6f89005 changes from boot to boot, with a
new build the changes are bigger. With kernel 3.10 I have also seen
this fault at different places in the boot process, but starting with
3.11 they are always occurring after the "Freeing unused kernel memory"
message. I never was able to completely boot to userspace without this
handler. The abort code is constant 0x1c06. This fault just happens
once in the boot process I have never seen it happing twice or more.
I also tried changing the CPSR.A bit to 0 in init_early, with this code
like Afzal suggested, but that did not change anything:
asm volatile("mrs r12, cpsr\n"
"bic r12, r12, #0x00000100\n"
"msr cpsr_c, r12" ::: "r12", "cc", "memory");
Disabling the L2 cache by building with CONFIG_CACHE_L2X0 unset did not
help.
This workaround was copied from the vendor code including most of the
comments. It says it they think this is caused by the CFE boot loader
used on this device. I do not have any access to any datasheet or
errata document to check this.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
This patch adds support for the BCM5301X/BCM470X SoCs with an ARM CPUs.
Currently just booting to a shell is working and nothing else, no
Ethernet, wifi, flash, ...
I have some pending patches to make Ethernet work for this device.
Mostly device tree support for bcma is missing.
This SoC is used in small office and home router with Broadcom SoCs
it's internal name is Northstar. This code should support the BCM4707,
BCM4708, BCM4709, BCM53010, BCM53011 and BCM53012 SoC. It uses one or
two ARM Cortex A9 Cores, some highlights are 2 PCIe 2.0 controllers,
4 Gigabit Ethernet MACs and a USB 3.0 host controller.
This SoC uses a dual core CPU, but this is currently not implemented.
More information about this SoC can be found here:
http://www.anandtech.com/show/5925/broadcom-announces-bcm4708x-and-bcm5301x-socs-for-80211ac-routers
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
The symbol is an orphan, get rid of it.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
Move the bcm2835 board file into the mach-bcm directory. This allows us
to get rid of the mach-bcm2835 directory with the associated Kconfig
and Makefile.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
[swarren, adjust defconfig so ARCH_BCM2835 still gets enabled]
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Multi-platform requires various kconfig options to be selected, so
platforms don't need to select them individually.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Adds pinctrl driver for Broadcom Capri (BCM281xx) SoCs.
v4: - PINCTRL selected in Kconfig, PINCTRL_CAPRI selected in bcm_defconfig
- make use of regmap
- change CAPRI_PIN_UPDATE from macro to inline function.
- Handle pull-up strength arg in Ohm instead of enum
v3: Re-work driver to be based on generic pin config. Moved config selection
from Kconfig to bcm_defconfig.
v2: Use hyphens instead of underscore in DT property names.
Signed-off-by: Sherman Yin <syin@broadcom.com>
Reviewed-by: Christian Daudt <bcm@fixthebug.org>
Reviewed-by: Matt Porter <matt.porter@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Merge tag 'bcm-for-3.13-soc2' of git://github.com/broadcom/bcm11351 into next/soc
From Christian Daudt, BCM changes for 3.13/soc. Mostly cleanups and
renaming of kernel config options, pushing down the mobile platforms
one level in the naming scheme, keeping ARCH_BCM as a wider family
config option.
* tag 'bcm-for-3.13-soc2' of git://github.com/broadcom/bcm11351:
ARM: bcm_defconfig: Run "make savedefconfig"
ARM: bcm281xx: Add ARCH Timers to config
rename ARCH_BCM to ARCH_BCM_MOBILE (mach-bcm)
ARM: bcm281xx: more descriptive machine string
ARM: bcm281xx: Enable GPIO driver
Signed-off-by: Olof Johansson <olof@lixom.net>
Add HAVE_ARM_ARCH_TIMER to Broadcom Kconfig as it is
required for some Mobile SoCs.
Signed-off-by: Christian Daudt <bcm@fixthebug.org>
Reviewed-by: Markus Mayer <mmayer@broadcom.com>
Reviewed-by: Mark Hambleton <mahamble@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>
Currently ARCH_BCM has been used for Broadcom
Mobile V7 based SoCs. In order to allow other Broadcom
SoCs to also use mach-bcm directory and files, this patch
renames the original ARCH_BCM to ARCH_BCM_MOBILE, and
uses ARCH_BCM to define any Broadcom chip residing
in mach-bcm directory.
Signed-off-by: Christian Daudt <bcm@fixthebug.org>
Acked-by: Olof Johansson <olof@lixom.net>
Changes from v2:
- switch ARCH_MULTIPLATFORM from select to depends
- remove 'default y' from BCM_MOBILE
Changes from v1:
- fix alpha ordering in dts/Makefile
- break into 4 patches for separate subsys
Add SoC model to DT_MACHINE_START string.
Signed-off-by: Christian Daudt <bcm@fixthebug.org>
Reviewed-by: Markus Mayer <mmayer@broadcom.com>
Reviewed-by: Mark Hambleton <mahamble@broadcom.com>
Reviewed-by: James King <jamesk@broadcom.com>
Turn on the bcm281xx GPIO driver in the kernel configuration.
Signed-off-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Christian Daudt <csd@broadcom.com>
With arch/arm calling of_clk_init(NULL) and clocksource_of_init()
this is no longer needed. The former is useful because we can make
use of dummy fixed clocks for drivers until the bcm281xx common
clock driver is ready.
Signed-off-by: Matt Porter <matt.porter@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Acked-by: Christian Daudt <csd@broadcom.com>
The current bcm_kona_smc_init function throws a BUG_ON if there's no SMC
device node defined in the device tree.
Since secure API access is optional depending the chip configuration,
fix this by allowing the rest of the code to run even if there's no SMC
device node defined
Signed-off-by: Christian Daudt <csd@broadcom.com>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
[ this is a follow-up to this discussion:
http://archive.arm.linux.org.uk/lurker/message/20130730.230827.a1ceb12a.en.html ]
This patchset renames all uses of "bcm," name bindings to
"brcm," as they were done prior to knowing that brcm had
already been standardized as Broadcom vendor prefix
(in Documentation/devicetree/bindings/vendor-prefixes.txt).
This will not cause any churn on devices because none of
these bindings have made it into production yet.
Signed-off-by: Christian Daudt <csd@broadcom.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
In order to support multiple SoC models in the mach-bcm
directory, board_bcm.c is being renamed board_bcm281xx.c
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Christian Daudt <csd@broadcom.com>
