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We removed CLK_IGNORE_UNUSED from CLKID_SDIO's flag, so the sdhci0 and
sdhci1 don't work. We fix this by adding the optional 2nd clock for
BG2Q's sdhci0 and sdhci1. This patch brings another benefit: the 2nd
clock can be disabled during runtime pm, so saves power a bit.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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The optional 2nd clock is CLKID_SDIO. We removed CLK_IGNORE_UNUSED
from CLKID_SDIO's flag, so the sdhci2 doesn't work. This patch fixes
this issue by correcting the sdhci2's 2nd clock.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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Both the 32bit and 64bit versions of the GICv3 header file are using
barriers, but neglect to include barrier.h, leading to an interesting
splat in some circumstances.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1449483072-17694-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The arm64 asm/cmpxchg.h includes linux/mmdebug.h but doesn't so far as I
can tell actually use anything from it. Removing the inclusion reduces
spurious header dependency rebuilds and also avoids issues with
recursive inclusions of headers causing build breaks due to attempts to
use things before they are defined if linux/mmdebug.h starts pulling in
more low level headers.
Such errors have happened in -next recently, for example:
In file included from include/linux/completion.h:11:0,
from include/linux/rcupdate.h:43,
from include/linux/tracepoint.h:19,
from include/linux/mmdebug.h:6,
from ./arch/arm64/include/asm/cmpxchg.h:22,
from ./arch/arm64/include/asm/atomic.h:41,
from include/linux/atomic.h:4,
from include/linux/spinlock.h:406,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/uapi/linux/timex.h:56,
from include/linux/timex.h:56,
from include/linux/sched.h:19,
from arch/arm64/kernel/asm-offsets.c:21:
include/linux/wait.h: In function 'wait_on_atomic_t':
include/linux/wait.h:1218:2: error: implicit declaration of function 'atomic_read' [-Werror=implicit-function-declaration]
if (atomic_read(val) == 0)
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Currently we treat the alternatives separately from other data that's
only used during initialisation, using separate .altinstructions and
.altinstr_replacement linker sections. These are freed for general
allocation separately from .init*. This is problematic as:
* We do not remove execute permissions, as we do for .init, leaving the
memory executable.
* We pad between them, making the kernel Image bianry up to PAGE_SIZE
bytes larger than necessary.
This patch moves the two sections into the contiguous region used for
.init*. This saves some memory, ensures that we remove execute
permissions, and allows us to remove some code made redundant by this
reorganisation.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jeremy Linton <jeremy.linton@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Currently we place an ALIGN_DEBUG_RO between text and data for the .text
and .init sections, and depending on configuration each of these may
result in up to SECTION_SIZE bytes worth of padding (for
DEBUG_RODATA_ALIGN).
We make no distinction between the text and data in each of these
sections at any point when creating the initial page tables in head.S.
We also make no distinction when modifying the tables; __map_memblock,
fixup_executable, mark_rodata_ro, and fixup_init only work at section
granularity. Thus this padding is unnecessary.
For the spit between init text and data we impose a minimum alignment of
16 bytes, but this is also unnecessary. The init data is output
immediately after the padding before any symbols are defined, so this is
not required to keep a symbol for linker a section array correctly
associated with the data. Any objects within the section will be given
at least their usual alignment regardless.
This patch removes the redundant padding.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jeremy Linton <jeremy.linton@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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As pgd_offset{,_k} shift the input address by PGDIR_SHIFT, the sub-page
bits will always be shifted out. There is no need to apply PAGE_MASK
before this.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jeremy Linton <jeremy.linton@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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The Reduced Serial Bus (RSB) controller is used to talk to the 3
companion ICs (2 PMICs, 1 RTC/codec IC) on the board.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The Cubieboard4 has a consumer IR receiver. Enable it in the DT.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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The Cubieboard4 has 2 controllable LEDs, 1 red and 1 green.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
Merge "Renesas ARM Based SoC DT Updates for v4.5" from Simon Horman:
* henninger: Remove as it is now replaced by silk
* koelsch: Move SPI partitions to subnode
* porter: Add CAN0 and HS-USB support
* r8a7793/gose: Add QSPI, PFC support
* r8a7793: Add GPIO, DMAC, theral, IPMMU support
* r8a7794/alt: Add DU support
* r8a7794: Disable all IPMMU nodes by default
* r8a779[0134]: Use Use SoC specific binding for rcar-dmac
* r8a779[01], r8a73a4, r8a7740, sh73a0: replace gpio-key, wakeup with
wakeup-source property
* r8a779[14]: Correct "gpio-ranges" properties
* r8a779[14]: Remove bogus imp_clk node
* silk: Add SDHI1 support
* tag 'renesas-dt-for-v4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (29 commits)
ARM: shmobile: alt: add VIN0, ADV7180 DT support
ARM: shmobile: alt: add I2C1 DT support
ARM: shmobile: alt: Add pfc pins to DT
ARM: shmobile: r8a7794: Use SoC specific binding for rcar-dmac nodes
ARM: shmobile: r8a7793: Use SoC specific binding for rcar-dmac nodes
ARM: shmobile: r8a7791: Use SoC specific binding for rcar-dmac nodes
ARM: shmobile: r8a7790: Use SoC specific binding for rcar-dmac nodes
ARM: shmobile: r8a7793: Add GPIO nodes to device tree
ARM: shmobile: r8a7794: alt: Enable VGA port
ARM: shmobile: r8a7794: Add DU node to device tree
ARM: shmobile: r8a7794: Add DU0 clock
ARM: shmobile: gose: Add QSPI device to DT
ARM: shmobile: r8a7793: Add QSPI device to DT
ARM: shmobile: r8a7793: Add DMAC devices to DT
ARM: shmobile: koelsch: Move SPI FLASH partitions to subnode
ARM: shmobile: gose: Configure PFC in DT
ARM: shmobile: r8a7793: Add PFC to DT
ARM: shmobile: r8a7793: Add thermal device to DT
ARM: shmobile: henninger: remove board DT
ARM: shmobile: porter: add CAN0 DT support
...
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Merge LPC32xx DTS changes for v4.5 from Vladimir Zapolskiy:
Main changes in the series:
- Added description of the second PWM controller device
- Added External Memory Controller device tree node (Primecell PL175)
- Added device tree nodes for standard timer controllers
- USB controllers are grouped
- Various minor clean-ups needed for further development of LPC32xx
* 'lpc32xx-dts' of https://github.com/vzapolskiy/linux:
arm: dts: lpc32xx: move USB controller subdevices into own device node
arm: dts: lpc32xx: add device nodes for standard timers
arm: dts: lpc32xx: add external memory controller device node
arm: dts: ea3250/phy3250: specify phys memory offset for lpc32xx boards
arm: dts: lpc32xx: add device node for the second pwm controller
arm: dts: lpc32xx: add reg property to cpu device node
arm: dts: lpc32xx: add labels to all defined peripheral nodes
arm: dts: lpc32xx: change include syntax to be C preprocessor friendly
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On entry from el0, we save all the registers on the kernel stack, and
restore them before returning. x29 remains unchanged when we call out
to C code, which will store x29 as the frame-pointer on the stack.
Instead, write 0 into x29 after entry from el0, to avoid any risk of
tracing into user space.
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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When unwind_frame() reaches the bottom of the irq_stack, the last fp
points to the original task stack. unwind_frame() uses
IRQ_STACK_TO_TASK_STACK() to find the sp value. If either values is
wrong, we may end up walking a corrupt stack.
Check these values are sane by testing if they are both on the stack
pointed to by current->stack.
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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irq_stack is a per_cpu variable, that needs to be access from entry.S.
Use an assembler macro instead of the unreadable details.
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Two DSCR tests have a hack in them:
/*
* XXX: Force a context switch out so that DSCR
* current value is copied into the thread struct
* which is required for the child to inherit the
* changed value.
*/
sleep(1);
We should not be working around this in the testcase, it is a kernel bug.
Fix it by copying the current DSCR to the child, instead of what we
had in the thread struct at last context switch.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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commit 152d523e6307 ("powerpc: Create context switch helpers save_sprs()
and restore_sprs()") moved the restore of SPRs after the call to _switch().
There is an issue with this approach - new tasks do not return through
_switch(), they are set up by copy_thread() to directly return through
ret_from_fork() or ret_from_kernel_thread(). This means restore_sprs() is
not getting called for new tasks.
Fix this by moving restore_sprs() before _switch().
Fixes: 152d523e6307 ("powerpc: Create context switch helpers save_sprs() and restore_sprs()")
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Commit a0e72cf12b1a ("powerpc: Create msr_check_and_{set,clear}()")
removed a call to check_if_tm_restore_required() in the
enable_kernel_*() functions. Add them back in.
Fixes: a0e72cf12b1a ("powerpc: Create msr_check_and_{set,clear}()")
Reported-by: Rashmica Gupta <rashmicy@gmail.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Instantiate all serial devices in r8a7793 device tree
and set them as disabled by default.
Based on similar work for the r8a7791 by Laurent Pinchart.
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Enable timestamps for kernel log output to improve debugging.
You can always use "dmesg -t" to strip the timestamps.
Don't specify CONFIG_LOG_BUF_SHIFT=16 while we're at it. There's a
reason the default in Kconfig is higher ;-)
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Drop the "console=" parameter from the kernel command line, as it's no
longer needed for DT-based platforms.
Add serial port config to chosen/stdout-path.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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We have never had dm814x booting properly with mainline kernel using
the legacy platform data based booting. Current minimal support is
device tree only.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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With the basic clocks now working we can enable GPIO.
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Otherwise pinctrl won't work. Because of silicon errata for some dm814x
versions, let's also keep bit 18 out of the function-mask and rely on
the bootloader configuration for bit 18 as suggested by
Matthijs van Duin <matthijsvanduin@gmail.com>.
Devices with that need to use bit 18 can override the function-mask in
the board specific dts file if really needed.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The control module is at offset 0x14000 with size 0x20000, not 0x16000.
This causes the pinctrl driver to not work.
Let's also fix the comments related to the TRM "L4LS Instance Summary"
table as that's what's causing the bad entries.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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There's a mux after the oscillator similar to am335x. I did not
notice this on hp t410 as it boots even with no clocks configured.
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Although we have hp t410 booting, I noticed that dm814x-evm does not boot
after I got one. This is because we don't have the clocks yet configured
properly. Let's start configuring proper clocks starting with the system
timers and clocks that work with existing mux and divider clock drivers.
Note that the oscillator speed register is different from am335x, dm814x
has only one bit that shows the BTMODE[6] at CONTROL_STATUS[21].
Also note that this only gets the system timers working with the defined
clocks. The PLL clocks are still missing and and the devices may or may
not work depending on what the bootloader has enabled.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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On dm814x we have some clocks at DPLLS and some at PRCM. Let's add a new
omap_prcm_init_data entry for the DPLLS so we can initalize timer clocks
early.
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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ARM TWD and Global timer are clocked by PERIPHCLK which is MPU_CLK/2.
But now they are clocked by dpll_mpu_m2_ck == MPU_CLK and, as result.
Timekeeping core misbehaves. For example, execution of command
"sleep 5" will take 10 sec instead of 5.
Hence, fix it by adding mpu_periphclk ("fixed-factor-clock") and use
it for clocking ARM TWD and Global timer (same way as on OMAP4).
Cc: Tony Lindgren <tony@atomide.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Fixes:commit 8cbd4c2f6a99 ("arm: boot: dts: am4372: add ARM timers and SCU nodes")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Currently it is possible for userspace (e.g. QEMU) to set a value
for the MSR for a guest VCPU which has both of the TS bits set,
which is an illegal combination. The result of this is that when
we execute a hrfid (hypervisor return from interrupt doubleword)
instruction to enter the guest, the CPU will take a TM Bad Thing
type of program interrupt (vector 0x700).
Now, if PR KVM is configured in the kernel along with HV KVM, we
actually handle this without crashing the host or giving hypervisor
privilege to the guest; instead what happens is that we deliver a
program interrupt to the guest, with SRR0 reflecting the address
of the hrfid instruction and SRR1 containing the MSR value at that
point. If PR KVM is not configured in the kernel, then we try to
run the host's program interrupt handler with the MMU set to the
guest context, which almost certainly causes a host crash.
This closes the hole by making kvmppc_set_msr_hv() check for the
illegal combination and force the TS field to a safe value (00,
meaning non-transactional).
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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This refactors the EFI init and runtime code that will be shared
between arm64 and ARM so that it can be built for both archs.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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This splits off the early EFI init and runtime code that
- discovers the EFI params and the memory map from the FDT, and installs
the memblocks and config tables.
- prepares and installs the EFI page tables so that UEFI Runtime Services
can be invoked at the virtual address installed by the stub.
This will allow it to be reused for 32-bit ARM.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Change the EFI memory reservation logic to use memblock_mark_nomap()
rather than memblock_reserve() to mark UEFI reserved regions as
occupied. In addition to reserving them against allocations done by
memblock, this will also prevent them from being covered by the linear
mapping.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Take the new memblock attribute MEMBLOCK_NOMAP into account when
deciding whether a certain region is or should be covered by the
kernel direct mapping.
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Running with CONFIG_DEBUG_SPINLOCK=y can trigger a BUG with the new IRQ
stack code:
BUG: spinlock lockup suspected on CPU#1
This is due to the IRQ_STACK_TO_TASK_STACK macro incorrectly retrieving
the task stack pointer stashed at the top of the IRQ stack.
Sayeth James:
| Yup, this is what is happening. Its an off-by-one due to broken
| thinking about how the stack works. My broken thinking was:
|
| > top ------------
| > | dummy_lr | <- irq_stack_ptr
| > ------------
| > | x29 |
| > ------------
| > | x19 | <- irq_stack_ptr - 0x10
| > ------------
| > | xzr |
| > ------------
|
| But the stack-pointer is decreased before use. So it actually looks
| like this:
|
| > ------------
| > | | <- irq_stack_ptr
| > top ------------
| > | dummy_lr |
| > ------------
| > | x29 | <- irq_stack_ptr - 0x10
| > ------------
| > | x19 |
| > ------------
| > | xzr | <- irq_stack_ptr - 0x20
| > ------------
|
| The value being used as the original stack is x29, which in all the
| tests is sp but without the current frames data, hence there are no
| missing frames in the output.
|
| Jungseok Lee picked it up with a 32bit user space because aarch32
| can't use x29, so it remains 0 forever. The fix he posted is correct.
This patch fixes the macro and adds some of this wisdom to a comment,
so that the layout of the IRQ stack is well understood.
Cc: James Morse <james.morse@arm.com>
Reported-by: Jungseok Lee <jungseoklee85@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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The properties specified in the wled node could harm connected hardware,
so move the properties to Honami and disable the platform node.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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Add the generic compatible strings for the PMIC gpio and MPP
modules found on qcom based PMICs.
Cc: <devicetree@vger.kernel.org>
Cc: "Ivan T. Ivanov" <iivanov@mm-sol.com>
Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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Add an alias for the PMICs found on qcom based SoCs so that the
newly updated dtbTool can find the PMIC compatible string and add
the pmic-id element to the QCDT header.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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The ifc6540 is an sbc (single board computer) board, so update
the compatible field accordingly.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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These clocks are fixed rate board sources that should be in DT.
Add them.
Cc: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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This introduces initial support for the Sony Xperia Z smartphone, including
support for UART, MMC, USB gadget and physical buttons.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
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