Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch enables RTC device node defined in exynos4.dtsi for
exynos4412-odroidx.
Signed-off-by: NDongjin Kim <tobetter@gmail.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This fixes the property of dw-mshc-sdr-timing and dw-mshc-ddr-timing as per
its current binding, it only has two cells.
Signed-off-by: NDongjin Kim <tobetter@gmail.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Arndale is a low cost board based on the Samsung Exynos5250 SoC.
This patch adds initial device tree support for this board.
Reviewed-by: NAlim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: NGirish K S <ks.giri@samsung.com>
Signed-off-by: NTushar Behera <tushar.behera@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch adds timer node and re-organizes cpu node for exynos5440.
Acked-by: NThomas Abraham <thomas.ab@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch removes disabled status from I2C node for exynos5440-ssdk5440,
and fixes the incorrect compatible property value of i2c for exynos5440.
Signed-off-by: NGiridhar Maruthy <giridhar.m@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Signed-off-by: NGiridhar Maruthy <giridhar.m@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Signed-off-by: NGiridhar Maruthy <giridhar.m@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Added sdhci node for exynos4412-origen.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Added vmmc regulator node in exynos4412-origen.dts file.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: NTomasz Figa <t.figa@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Add initial DT for Hardkernel's ODROID-X board based on EXYNOS4412
SoC. This patch including adds the node to support fixed voltage for
peripherals like LED, ethernet controller, and this patch adds GPIO
connected LEDS on ODROID-X board and configure its properties like
following:
LED1: use 'heartbeat' trigger, blinking while the board is running.
LED2: use 'mmc0' trigger, on when mmc0 is accessing.

And adds the device node to support eMMC storage on SDCARD4 ports,
controlled by MSHC.
Signed-off-by: NDongjin Kim <tobetter@gmail.com>
Acked-by: NOlof Johansson <olof@lixom.net>
[kgene.kim@samsung.com: squashed into one commit as per Olof's comment]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Add a minimal board dts file for EXYNOS4412 based Insignal Origen board.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

remove duplicated compatible
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

metag/allmodconfig:

drivers/media/v4l2-core/videobuf2-dma-contig.c: In function 'vb2_dc_get_base_sgt':
drivers/media/v4l2-core/videobuf2-dma-contig.c:387: error: implicit declaration of function 'dma_get_sgtable'

For architectures using dma_map_ops, dma_get_sgtable() is provided in
<asm-generic/dma-mapping-common.h>.

Metag does not use dma_map_ops yet, hence it should implement it as an
inline stub using dma_common_get_sgtable().
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>

Metag doesn't have a metag_dt_memblock_reserve() function so remove the
declaration from asm/prom.h.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Make a copy of the device tree blob in non-init memory. It is required
when using built-in device tree files that the platform code copies the
blob to non-init memory prior to calling unflatten_device_tree(),
otherwise the strings that the device tree refer to will get poisoned
and potentially reused, breaking later reading of the device tree
post-init (such as compatible matching in modules, debugfs, and the
procfs interface).
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Reviewed-by: NVineet Gupta <vgupta@synopsys.com>

Minimise metag_ksyms.c includes to directly include the <asm/*.h> files
that declare a particular symbol, and not include any unnecessary ones.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in mm/init.c into mm/init.c.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in usercopy.c into usercopy.c
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in setup.c into setup.c
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in kick.c into kick.c
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in traps.c into traps.c
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

The SMP version of arch_local_irq_enable() uses preempt_disable(), but
<asm/irqflags.h> doesn't include <linux/preempt.h> causing the following
errors on SMP when pstore/ftrace is enabled (caught by buildbot smp
allyesconfig):

In file included from include/linux/irqflags.h:15,
                 from fs/pstore/ftrace.c:16:
arch/metag/include/asm/irqflags.h: In function 'arch_local_irq_enable':
arch/metag/include/asm/irqflags.h:84: error: implicit declaration of function 'preempt_disable'
arch/metag/include/asm/irqflags.h:86: error: implicit declaration of function 'preempt_enable_no_resched'

However <linux/preempt.h> cannot be easily included from
<asm/irqflags.h> as it can cause circular include dependencies in the
!SMP case, and potentially in the SMP case in the future. Therefore move
the SMP implementation of arch_local_irq_enable() into traps.c and use
an inline version of get_trigger_mask() which is also defined in traps.c
for SMP.

This adds an extra layer of function call / stack push when
preempt_disable needs to call other functions, however in the
non-preemptive SMP case it should be about as fast, as it was already
calling the get_trigger_mask() function which is now used inline.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Convert hugetlb_get_unmapped_area_new_pmd() to use vm_unmapped_area()
rather than searching the virtual address space itself. This fixes the
following errors in linux-next due to the specified members being
removed after other architectures have already been converted:

arch/metag/mm/hugetlbpage.c: In function 'hugetlb_get_unmapped_area_new_pmd':
arch/metag/mm/hugetlbpage.c:199: error: 'struct mm_struct' has no member named 'cached_hole_size'
arch/metag/mm/hugetlbpage.c:200: error: 'struct mm_struct' has no member named 'free_area_cache'
arch/metag/mm/hugetlbpage.c:215: error: 'struct mm_struct' has no member named 'cached_hole_size'
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Acked-by: NMichel Lespinasse <walken@google.com>

Various file systems use clear_page() and copy_page(), so when they're
built as modules we get build errors like the following:

ERROR: "clear_page" [fs/ntfs/ntfs.ko] undefined!
ERROR: "copy_page" [fs/nilfs2/nilfs2.ko] undefined!

Therefore export these functions to modules from metag_ksyms.c to fix
the errors. This was hit by a randconfig build.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Various file systems indirectly use metag_code_cache_flush_all(), so
when they're built as modules we get build errors like the following:

ERROR: "metag_code_cache_flush_all" [fs/xfs/xfs.ko] undefined!

Therefore export this function to modules to fix the errors. This was
hit by a randconfig build.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Rename setup_txprivext() to setup_priv() and add initialisation of some
more per-thread privilege protection registers:

 - TxPRIVSYSR: 0x04400000-0x047fffff
               0x05000000-0x07ffffff
               0x84000000-0x87ffffff
 - TxPIOREG:   0x02000000-0x02ffffff
               0x04800000-0x048fffff
 - TxSYREG:    0x04000000-0x04000fff (except write fetch system event)
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Define PRIV_BITS using explicit constants from <asm/metag_regs.h> rather
than with a hard coded value. This also adds a couple of missing
definitions for the TXPRIVEXT priv bits for protecting writes to TXTIMER
and the trace registers.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Sort includes in kernel/setup.c.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add boot time check for whether LNKGET/LNKSET go through or around the
cache. Depending on the configuration an info message (no harm), warning
(technically wrong but no harm), or big WARN (expect failure in either
kernel or userland) may be emitted if the behaviour is not as expected:

Configuration                                Hardware   Response
------------------------------------------   --------   --------
AROUND_CACHE                                 through    pr_info
!AROUND_CACHE && ATOMICITY_LNKGET            around     WARN (kernel)
     "        && !ATOMICITY_LNKGET && SMP    around     WARN (user)
     "                   "         && !SMP   around     pr_warn
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

metag_cache_probe() is only called from setup_arch(), so add the __init
attribute to it.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add basic JTAG Debug Adapter (DA) support so that drivers which
communicate with the DA can detect whether one is actually present
(otherwise the target will halt indefinitely).

This allows the metag_da TTY driver and imgdafs filesystem driver to be
built, updates defconfigs, and sets up the metag_da console early if
it's configured in.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add ftrace support for metag.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Reviewed-by: NSteven Rostedt <rostedt@goodmis.org>

Add Perf support for metag.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>

Add metag build infrastructure.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add the remaining metag header files:
 - byteorder.h, swab.h (byte order and swapping)
 - barrier.h, cpu.h. hwthread.h, processor.h (hardware thread related)
 - bug.h, elf.h, gpio.h, linkage.h, resource.h (other)
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add stack unwinding support for metag.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add optimised library functions for metag.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>

Add DMA mapping code.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>