Commit Graph

647991 Commits

Author SHA1 Message Date
Arnd Bergmann 23ca9b5223 MIPS: ip22: Fix ip28 build for modern gcc
kernelci reports a failure of the ip28_defconfig build after upgrading its
gcc version:

arch/mips/sgi-ip22/Platform:29: *** gcc doesn't support needed option -mr10k-cache-barrier=store.  Stop.

The problem apparently is that the -mr10k-cache-barrier=store option is now
rejected for CPUs other than r10k. Explicitly including the CPU in the
check fixes this and is safe because both options were introduced in
gcc-4.4.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15049/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:11 +01:00
Arnd Bergmann e9663b13c8 MIPS: Octeon: Avoid empty-body warning
gcc-6 reports a harmless build warning:

arch/mips/cavium-octeon/dma-octeon.c: In function 'octeon_dma_alloc_coherent':
arch/mips/cavium-octeon/dma-octeon.c:179:3: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]

We can fix this by rearranging the code slightly using the
IS_ENABLED() macro.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15048
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:11 +01:00
Arnd Bergmann 72d1cfc924 MIPS: Loongson64: Fix empty-body warning in dma_alloc
A new gcc warning shows up for this old code with gcc-6:

arch/mips/loongson64/common/dma-swiotlb.c: In function 'loongson_dma_alloc_coherent':
arch/mips/loongson64/common/dma-swiotlb.c:35:2: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]

The code can be easily restructured to look more readable
and avoid the warning at the same time.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15047/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:11 +01:00
Arnd Bergmann 886f9c69fc MIPS: ralink: Remove unused rt*_wdt_reset functions
All pointers to these functions were removed, so now they produce
warnings:

arch/mips/ralink/rt305x.c:92:13: error: 'rt305x_wdt_reset' defined but not used [-Werror=unused-function]

This removes the functions. If we need them again, the patch can be
reverted later.

Fixes: f576fb6a07 ("MIPS: ralink: cleanup the soc specific pinmux data")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Crispin <john@phrozen.org>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15044/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Arnd Bergmann 6d2700a95f MIPS: ralink: Fix request_mem_region error handling
request_mem_region returns a NULL pointer on error, comparing it
against a number results in a warning:

arch/mips/ralink/of.c: In function 'plat_of_remap_node':
arch/mips/ralink/of.c:45:15: error: ordered comparison of pointer with integer zero [-Werror=extra]
arch/mips/ralink/irq.c: In function 'intc_of_init':
arch/mips/ralink/irq.c:167:15: error: ordered comparison of pointer with integer zero [-Werror=extra]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Crispin <john@phrozen.org>
Cc: Tobias Wolf <dev-NTEO@vplace.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15045/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Arnd Bergmann d92240d12a MIPS: ralink: Remove unused timer functions
The functions were originally used for the module unload path,
but are not referenced any more and just cause warnings:

arch/mips/ralink/timer.c:104:13: error: 'rt_timer_disable' defined but not used [-Werror=unused-function]
arch/mips/ralink/timer.c:74:13: error: 'rt_timer_free' defined but not used [-Werror=unused-function]

Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Fixes: 62ee73d284 ("MIPS: ralink: Make timer explicitly non-modular")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15041/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Arnd Bergmann 98ea51cb0c MIPS: Lantiq: Fix another request_mem_region() return code check
Hauke already fixed a couple of them, but one instance remains
that checks for a negative integer when it should check
for a NULL pointer:

arch/mips/lantiq/xway/sysctrl.c: In function 'ltq_soc_init':
arch/mips/lantiq/xway/sysctrl.c:473:19: error: ordered comparison of pointer with integer zero [-Werror=extra]

Fixes: 6e80785267 ("MIPS: Lantiq: Fix check for return value of request_mem_region()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15043/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Arnd Bergmann e45587293c MIPS: Alchemy: Remove duplicate initializer
We get a harmless warning about a duplicate initalizer for the
i2c board info structure:

arch/mips/alchemy/board-gpr.c:239:11: error: initialized field overwritten [-Werror=override-init]

As both initializers have the identical value, we can simply drop
the second one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15046/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:10 +01:00
Arnd Bergmann 8c9b23ffb3 MIPS: 'make -s' should be silent
A clean mips64 build produces no output except for two lines:

  Checking missing-syscalls for N32
  Checking missing-syscalls for O32

On other architectures, there is no output at all, so let's do the
same here for the sake of build testing. The 'kecho' macro is used
to print the message on a normal build but skip it with 'make -s'.

Fixes: e48ce6b8df ("[MIPS] Simplify missing-syscalls for N32 and O32")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Maarten ter Huurne <maarten@treewalker.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15040/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:09 +01:00
Arnd Bergmann 1742ac2650 MIPS: VDSO: avoid duplicate CAC_BASE definition
vdso.h includes <spaces.h> implicitly after defining CONFIG_32BITS.
This defeats the override in mach-ip27/spaces.h, leading to
a build error that shows up in kernelci.org:

In file included from arch/mips/include/asm/mach-ip27/spaces.h:29:0,
                 from arch/mips/include/asm/page.h:12,
                 from arch/mips/vdso/vdso.h:26,
                 from arch/mips/vdso/gettimeofday.c:11:
arch/mips/include/asm/mach-generic/spaces.h:28:0: error: "CAC_BASE" redefined [-Werror]
 #define CAC_BASE  _AC(0x80000000, UL)

An earlier patch tried to make the second definition conditional,
but that patch had the #ifdef in the wrong place, and would lead
to another warning:

arch/mips/include/asm/io.h: In function 'phys_to_virt':
arch/mips/include/asm/io.h:138:9: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]

For all I can tell, there is no other reason than vdso32 to ever
include this file with CONFIG_32BITS set, and the vdso itself should
never refer to the base addresses as it is running in user space,
so adding an #ifdef here is safe.

Link: https://patchwork.kernel.org/patch/9418187/
Fixes: 3ffc17d876 ("MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15039/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-25 02:51:09 +01:00
Arnd Bergmann b668970e61 MIPS: Fix modversions
kernelci.org reports tons of build warnings for linux-next:

35	WARNING: "memcpy" [fs/fat/msdos.ko] has no CRC!
35	WARNING: "__copy_user" [fs/fat/fat.ko] has no CRC!
32	WARNING: EXPORT symbol "memset" [vmlinux] version generation failed, symbol will not be versioned.
32	WARNING: EXPORT symbol "copy_page" [vmlinux] version generation failed, symbol will not be versioned.
32	WARNING: EXPORT symbol "clear_page" [vmlinux] version generation failed, symbol will not be versioned.
32	WARNING: EXPORT symbol "__strncpy_from_user_nocheck_asm" [vmlinux] version generation failed, symbol will not be versioned.

The problem here is mainly the missing asm/asm-prototypes.h header file
that is supposed to include the prototypes for each symbol that is exported
from an assembler file.

A second problem is that the asm/uaccess.h header contains some but not
all the necessary declarations for the user access helpers.

Finally, the vdso build is broken once we add asm/asm-prototypes.h, so
we have to fix this at the same time by changing the vdso header. My
approach here is to just not look for exported symbols in the VDSO
assembler files, as the symbols cannot be exported anyway.

Fixes: 576a2f0c5c ("MIPS: Export memcpy & memset functions alongside their definitions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15038/
Patchwork: https://patchwork.linux-mips.org/patch/15069/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:35 +01:00
Arnd Bergmann ea58fca184 MIPS: Update ip27_defconfig for SCSI_DH change
Since linux-4.3, SCSI_DH is a bool symbol, causing a warning in
kernelci.org:

arch/mips/configs/ip27_defconfig:136:warning: symbol value 'm' invalid for SCSI_DH

This updates the defconfig to have the feature built-in.

Fixes: 086b91d052 ("scsi_dh: integrate into the core SCSI code")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15001/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:35 +01:00
Arnd Bergmann b3f6046186 MIPS: Update lemote2f_defconfig for CPU_FREQ_STAT change
Since linux-4.8, CPU_FREQ_STAT is a bool symbol, causing a warning in
kernelci.org:

arch/mips/configs/lemote2f_defconfig:42:warning: symbol value 'm' invalid for CPU_FREQ_STAT

This updates the defconfig to have the feature built-in.

Fixes: 1aefc75b24 ("cpufreq: stats: Make the stats code non-modular")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/15000/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:35 +01:00
Arnd Bergmann 9ddc16ad8e MIPS: Update defconfigs for NF_CT_PROTO_DCCP/UDPLITE change
In linux-4.10-rc, NF_CT_PROTO_UDPLITE and NF_CT_PROTO_DCCP are bool
symbols instead of tristate, and kernelci.org reports a bunch of
warnings for this, like:

arch/mips/configs/malta_kvm_guest_defconfig:63:warning: symbol value 'm' invalid for NF_CT_PROTO_UDPLITE
arch/mips/configs/malta_defconfig:62:warning: symbol value 'm' invalid for NF_CT_PROTO_DCCP
arch/mips/configs/malta_defconfig:63:warning: symbol value 'm' invalid for NF_CT_PROTO_UDPLITE
arch/mips/configs/ip22_defconfig:70:warning: symbol value 'm' invalid for NF_CT_PROTO_DCCP
arch/mips/configs/ip22_defconfig:71:warning: symbol value 'm' invalid for NF_CT_PROTO_UDPLITE

This changes all the MIPS defconfigs with these symbols to have them
built-in.

Fixes: 9b91c96c5d ("netfilter: conntrack: built-in support for UDPlite")
Fixes: c51d39010a ("netfilter: conntrack: built-in support for DCCP")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14999/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:34 +01:00
Jaedon Shin d783738c00 MIPS: BMIPS: Add support SPI device nodes
Adds SPI device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14990/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:34 +01:00
James Hogan 35e7f7885e MIPS: Fix printk continuations in cpu-bugs64.c
64-bit pre-r6 kernels output the following broken printk continuation
lines during boot:

Checking for the multiply/shift bug...
no.
Checking for the daddiu bug...
no.
Checking for the daddi bug...
no.

Fix the printk continuations in cpu-bugs64.c to use pr_cont to restore
the correct output:

Checking for the multiply/shift bug... no.
Checking for the daddiu bug... no.
Checking for the daddi bug... no.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14916/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-24 18:30:34 +01:00
Ralf Baechle 209ec69ab3 MIPS: zboot: Consolidate compiler flag filtering.
Al Viro noticed that we were using two different methods to filter out
flags from KBUILD_CFLAGS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
2017-01-03 16:48:40 +01:00
Colin Ian King 08d90c81b7 MIPS: ralink: Fix incorrect assignment on ralink_soc
ralink_soc sould be assigned to RT3883_SOC, replace incorrect
comparision with assignment.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Fixes: 418d29c870 ("MIPS: ralink: Unify SoC id handling")
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14903/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:40 +01:00
Paul Burton 48ed33c1b3 MIPS: sc-mips: L2 cache is inclusive of L1 dcache for CM3
In systems with CM3 & higher, the L2 cache is inclusive of the L1
dcache. Indicate this such that cpu_has_inclusive_pcaches evaluates true
and we avoid some unnecessary cache ops during DMA cache maintenance.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14018/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:40 +01:00
Paul Burton d66f99bc46 MIPS: c-r4k: Treat physically indexed dcaches as not aliasing
Physically indexed caches cannot suffer from virtual aliasing, so clear
the MIPS_CACHE_ALIASES bit in order to ensure we don't do extra work
avoiding aliasing that cannot happen.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14017/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:40 +01:00
Paul Burton 819da1ead1 MIPS: c-r4k: Treat I6400 dcache as though physically indexed
The L1 data cache in I6400 CPUs is indexed by physical address bits if
an entry for the address is present in the DTLB early enough in the
pipelined execution of a memory access instruction. If an entry is not
present then it's indexed by virtual address bits, but hardware will
check in a later pipeline stage when a DTLB entry has been created
whether the virtual address bits used match the physical address bits,
and if not will transparently restart the memory access instruction.

This means that although it isn't always physically indexed, it appears
so to software & we can treat the I6400 L1 data cache as being
physically indexed in order to avoid considering aliasing.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14016/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:40 +01:00
Kelvin Cheung 5d0a99d6af MIPS: Loongson1B: Change the OSC clock name
This patch changes the OSC clock name to "osc_clk" as expected by all
clock users.

Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13903/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:40 +01:00
Paul Burton a8b3b0c94a MIPS: Netlogic: Fix assembler warning from smpboot.S
The netlogic platform can be built for either MIPS32 or MIPS64, and when
built for MIPS32 (as by nlm_xlr_defconfig) the use of the dla
pseudo-instruction leads to warnings such as the following from recent
versions of the GNU assembler:

  arch/mips/netlogic/common/smpboot.S: Assembler messages:
  arch/mips/netlogic/common/smpboot.S:62: Warning: dla used to load 32-bit register; recommend using la instead
  arch/mips/netlogic/common/smpboot.S:63: Warning: dla used to load 32-bit register; recommend using la instead

Avoid these warnings by using the PTR_LA macro to make use of the
appropriate la or dla pseudo-instruction for the build.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 66d29985fa ("MIPS: Netlogic: Merge some of XLR/XLP wakup code")
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14185/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:39 +01:00
Paul Burton f44374f14c MIPS: Export {copy, clear}_page functions alongside their definitions
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocations for the copy_page & clear_page functions to be
alongside their definitions.

With this change there are no longer any symbols exported from
mips_ksyms.c so remove the file.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14515/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:48:39 +01:00
Paul Burton 576a2f0c5c MIPS: Export memcpy & memset functions alongside their definitions
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocations for the memcpy & memset functions & variants
thereof to be alongside their definitions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14514/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:50 +01:00
Paul Burton d6cb671589 MIPS: Export string functions alongside their definitions
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocations for the strlen*, strnlen* & strncpy* functions
to be alongside their definitions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14513/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:50 +01:00
Paul Burton 231300423a MIPS: Export csum functions alongside their definitions
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocations for the csum_partial_* functions to be
alongside their definitions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14512/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:50 +01:00
Paul Burton aa4089e6ce MIPS: Export invalid_pte_table alongside its definition
It's unclear to me why this wasn't always the case, but move the
EXPORT_SYMBOL invocation for invalid_pte_table to be alongside its
definition.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14511/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:49 +01:00
Paul Burton 827456e710 MIPS: Export _mcount alongside its definition
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocation for _mcount to be alongside its definition.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14525/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:49 +01:00
Paul Burton 29830c124d MIPS: Export _save_fp & _save_msa alongside their definitions
Now that EXPORT_SYMBOL can be used from assembly source, move the
EXPORT_SYMBOL invocations for _save_fp & _save_msa to be alongside their
definitions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14509/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:49 +01:00
Paul Burton 08889582b8 MIPS: End asm function prologue macros with .insn
When building a kernel targeting a microMIPS ISA, recent GNU linkers
will fail the link if they cannot determine that the target of a branch
or jump is microMIPS code, with errors such as the following:

    mips-img-linux-gnu-ld: arch/mips/built-in.o: .text+0x542c:
    Unsupported jump between ISA modes; consider recompiling with
    interlinking enabled.
    mips-img-linux-gnu-ld: final link failed: Bad value

or:

    ./arch/mips/include/asm/uaccess.h:1017: warning: JALX to a
    non-word-aligned address

Placing anything other than an instruction at the start of a function
written in assembly appears to trigger such errors. In order to prepare
for allowing us to follow function prologue macros with an EXPORT_SYMBOL
invocation, end the prologue macros (LEAD, NESTED & FEXPORT) with a
.insn directive. This ensures that the start of the function is marked
as code, which always makes sense for functions & safely prevents us
from hitting the link errors described above.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14508/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:49 +01:00
Paul Burton 2c0e57eaef MIPS: tlbex: Clear ISA bit when writing to handle_tlb{l,m,s}
When generating TLB exception handling code we write to memory reserved
at the handle_tlbl, handle_tlbm & handle_tlbs symbols. Up until now the
ISA bit has always been clear simply because the assembly code reserving
the space for those functions places no instructions in them. In
preparation for marking all LEAF functions as containing code,
explicitly clear the ISA bit when calculating the addresses at which to
write TLB exception handling code.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:49 +01:00
Paul Burton 858e2b2310 MIPS: Use generic asm/export.h
Include export.h in the list of generic headers used by the MIPS
architecture for use by later patches.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:48 +01:00
Paul Burton de96ec2a77 OF: Prevent unaligned access in of_alias_scan()
When allocating a struct alias_prop, of_alias_scan() only requested that
it be aligned on a 4 byte boundary. The struct contains pointers which
leads to us attempting 64 bit writes on 64 bit systems, and if the CPU
doesn't support unaligned memory accesses then this causes problems -
for example on some MIPS64r2 CPUs including the "mips64r2-generic" QEMU
emulated CPU it will trigger an address error exception.

Fix this by requesting alignment for the struct alias_prop allocation
matching that which the compiler expects, using the __alignof__ keyword.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14306/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:48 +01:00
Ralf Baechle 5c01918068 MIPS: IRQ: Remove useless i8259_of_init() prototype.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:48 +01:00
Marcin Nowakowski cd854fc6f1 MIPS: uprobes: Remove __weak attribute from arch_uprobe_copy_ixol.
Arch-specific implementation of arch_uprobe_copy_ixol is expected to
override the weak implementation in generic code.
As currently both implementations are marked as weak, it is up to the
linker to chose one. Remove the __weak attribute from MIPS code to make
sure the correct version is used.

Fixes: 40e084a506 ("MIPS: Add uprobes support.")
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14660/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:48 +01:00
John Crispin 9c48568b36 MIPS: ralink: Cosmetic change to prom_init().
Over the years the code has been changed various times leading to
argc/argv being defined in a different function to where we actually
use the variables. Clean this up by moving them to prom_init_cmdline().

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14902/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:48 +01:00
John Crispin 07724712bf MIPS: ralink: Add missing symbol for highmem support.
MT7621 has highmem. this was previously not working as the required symbol
was not selected in the Kconfig file.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14901/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:47 +01:00
John Crispin 80e6321abc MIPS: ralink: Add missing clk_round_rate().
As we dont use the common clock api yet we need to add this stub to allow
building drivers that use the API.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14900/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:47 +01:00
John Crispin 58181a117d MIPS: ralink: Fix a typo in the pinmux setup.
There is a typo inside the pinmux setup code. The function is really
called utif and not util. This was recently discovered when people were
trying to make the UTIF interface work.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14899/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:47 +01:00
John Crispin 16eccef68f MIPS: ralink: Add missing pinmux.
The mt7620 has a pin that can be used to generate an external reference
clock. The pinmux setup was missing the definition of said pin. This patch
adds it.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14898/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:47 +01:00
John Crispin 2517caf19d MIPS: ralink: Add missing I2C and I2S clocks.
This patch adds two additional clocks required by the audio interface of
the SoCs.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14897/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:47 +01:00
John Crispin 4f79ddec04 MIPS: ralink: MT7621 does not set its SoC type.
The code does not set the SoC type properly. This went unnoticed until now
as the SoC does not share any of the driver code with the other SoCs, until
we made the mmc driver work.

Signed-off-by: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14896/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:46 +01:00
Justin Chen ef462f3b64 MIPS: Add cacheinfo support
Add cacheinfo support for MIPS architectures.

Use information from the cpuinfo_mips struct to populate the
cacheinfo struct. This allows an architecture agnostic approach,
however this also means if cache information is not properly
populated within the cpuinfo_mips struct, there is nothing
we can do. (I.E. c-r3k.c)

Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Cc: f.fainelli@gmail.com
Cc: linux-mips@linux-mips.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/14650/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:46 +01:00
Marcin Nowakowski 0014dea6b7 MIPS: generic/kexec: add support for a DTB passed in a separate buffer
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14615/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:46 +01:00
Marcin Nowakowski 856b0f591e MIPS: kexec: add debug info about the new kexec'ed image
Print details of the new kexec image loaded.

Based on the original code from
commit 221f2c770e ("arm64/kexec: Add pr_debug output")

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14614/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:46 +01:00
Marcin Nowakowski a8f108d70c MIPS: kexec: Do not reserve invalid crashkernel memory on boot
Do not reserve memory for the crashkernel if the commandline argument
points to a wrong location. This can happen if the location is specified
wrong or if the same commandline is reused when starting the crashkernel
- in the latter case the reserved memory would point to the location
from which the crashkernel is executing.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14612/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:46 +01:00
Marcin Nowakowski 73fbc1eba7 MIPS: fix mem=X@Y commandline processing
When a memory offset is specified through the commandline, add the
memory in range PHYS_OFFSET:Y as reserved memory area.
Otherwise the bootmem allocator is initialised with low page equal to
min_low_pfn = PHYS_OFFSET, and in free_all_bootmem will process pages
starting from min_low_pfn instead of PFN(Y).

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14613/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:45 +01:00
Marcin Nowakowski 4c9fff3622 MIPS: relocate: Optionally relocate the DTB
If the DTB is located in the target memory area for the relocated kernel
it needs to be relocated as well before kernel relocation takes place.

After copying the DTB use the new plat_fdt_relocated() API from the
relocated kernel to ensure the relocated kernel updates any information
that it may have cached about the location of the DTB.

plat_fdt_relocated is declared as a weak symbol so that platforms that
do not require it do not need to implement the method.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14616/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:45 +01:00
Marcin Nowakowski 0063fdede6 MIPS: platform: Allow for DTB to be moved during kernel relocation
Add plat_fdt_relocated(void*) API to allow the kernel relocation code to
update platform's information about the DTB location if the DTB had to
be moved due to being placed in a location used by the relocated kernel.

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14611/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:45 +01:00