25 Jan, 2016
1 commit
-
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for MIPS for 4.5 plus some 4.4 fixes.The executive summary:
- ATH79 platform improvments, use DT bindings for the ATH79 USB PHY.
- Avoid useless rebuilds for zboot.
- jz4780: Add NEMC, BCH and NAND device tree nodes
- Initial support for the MicroChip's DT platform. As all the device
drivers are missing this is still of limited use.
- Some Loongson3 cleanups.
- The unavoidable whitespace polishing.
- Reduce clock skew when synchronizing the CPU cycle counters on CPU
startup.
- Add MIPS R6 fixes.
- Lots of cleanups across arch/mips as fallout from KVM.
- Lots of minor fixes and changes for IEEE 754-2008 support to the
FPU emulator / fp-assist software.
- Minor Ralink, BCM47xx and bcm963xx platform support improvments.
- Support SMP on BCM63168"* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (84 commits)
MIPS: zboot: Add support for serial debug using the PROM
MIPS: zboot: Avoid useless rebuilds
MIPS: BMIPS: Enable ARCH_WANT_OPTIONAL_GPIOLIB
MIPS: bcm63xx: nvram: Remove unused bcm63xx_nvram_get_psi_size() function
MIPS: bcm963xx: Update bcm_tag field image_sequence
MIPS: bcm963xx: Move extended flash address to bcm_tag header file
MIPS: bcm963xx: Move Broadcom BCM963xx image tag data structure
MIPS: bcm63xx: nvram: Use nvram structure definition from header file
MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
MAINTAINERS: Add KVM for MIPS entry
MIPS: KVM: Add missing newline to kvm_err()
MIPS: Move KVM specific opcodes into asm/inst.h
MIPS: KVM: Use cacheops.h definitions
MIPS: Break down cacheops.h definitions
MIPS: Use EXCCODE_ constants with set_except_vector()
MIPS: Update trap codes
MIPS: Move Cause.ExcCode trap codes to mipsregs.h
MIPS: KVM: Make kvm_mips_{init,exit}() static
MIPS: KVM: Refactor added offsetof()s
MIPS: KVM: Convert EXPORT_SYMBOL to _GPL
...
24 Jan, 2016
39 commits
-
As most platforms implement the PROM serial interface prom_putchar()
add a simple bridge to allow re-using this code for zboot.Signed-off-by: Alban Bedel
Cc: Alex Smith
Cc: Andrew Bresticker
Cc: Wu Zhangjin
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11811/
Signed-off-by: Ralf Baechle -
Add dummy.o to the targets list, and fill targets automatically from
$(vmlinuzobjs) to avoid having to maintain two lists.When building with XZ compression copy ashldi3.c to the build
directory to use a different object file for the kernel and zboot.
Without this the same object file need to be build with different
flags which cause a rebuild at every run.Signed-off-by: Alban Bedel
Cc: linux-mips@linux-mips.org
Cc: Alex Smith
Cc: Wu Zhangjin
Cc: Andrew Bresticker
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11810/
Signed-off-by: Ralf Baechle -
Allow BMIPS_GENERIC supported platforms to build GPIO controller
drivers.Signed-off-by: Florian Fainelli
Reviewed-by: Dragan Stancevic
Cc: cernekee@gmail.com
Cc: jaedon.shin@gmail.com
Cc: gregory.0xf0@gmail.com
Cc: Florian Fainelli
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12019/
Signed-off-by: Ralf Baechle -
Remove bcm63xx_nvram_get_psi_size() as it now has no users.
Signed-off-by: Simon Arlott
Cc: David Woodhouse
Cc: Brian Norris
Cc: Kevin Cernekee
Cc: Florian Fainelli
Cc: Jonas Gorski
Cc: Linux Kernel Mailing List
Cc: MIPS Mailing List
Cc: MTD Maling List
Patchwork: https://patchwork.linux-mips.org/patch/11836/
Signed-off-by: Ralf Baechle -
Move Broadcom BCM963xx image tag data structure to include/linux/
so that drivers outside of mach-bcm63xx can use it.Signed-off-by: Simon Arlott
Cc: David Woodhouse
Cc: Brian Norris
Cc: Kevin Cernekee
Cc: Florian Fainelli
Cc: Jonas Gorski
Cc: Linux Kernel Mailing List
Cc: MIPS Mailing List
Cc: MTD Maling List
Patchwork: https://patchwork.linux-mips.org/patch/11832/
Signed-off-by: Ralf Baechle -
Use the common definition of the nvram structure from the header file
include/linux/bcm963xx_nvram.h instead of maintaining a separate copy.Read the version 5 size of nvram data from memory and then call the
new checksum verification function from the header file.Signed-off-by: Simon Arlott
Cc: David Woodhouse
Cc: Brian Norris
Cc: Kevin Cernekee
Cc: Florian Fainelli
Cc: Jonas Gorski
Cc: Linux Kernel Mailing List
Cc: MIPS Mailing List
Cc: MTD Maling List
Patchwork: https://patchwork.linux-mips.org/patch/11831/
Signed-off-by: Ralf Baechle -
Add missing newline to end of kvm_err string when guest PMAP couldn't be
allocated.Signed-off-by: James Hogan
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11896/
Signed-off-by: Ralf Baechle -
The header arch/mips/kvm/opcode.h defines a few extra opcodes which
aren't in arch/mips/include/uapi/asm/inst.h. There's nothing KVM
specific about them, so lets move them into inst.h where they belong and
delete the header.Note that mfmcz_op is renamed to mfmc0_op to match the instruction set
manual, and wait_op was already added to inst.h in commit b0a3eae2b943
("MIPS: inst.h: define COP0 wait op"), merged in v3.16-rc1.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11895/
Signed-off-by: Ralf Baechle -
Drop the custom cache operation code definitions used by KVM for
emulating guest CACHE instructions, and switch to use the existing
definitions in .Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11893/
Signed-off-by: Ralf Baechle -
Most of the cache op codes defined in cacheops.h are split into a 2-bit
cache identifier, and a 3-bit cache op code which does largely the same
thing semantically regardless of the cache identifier.To allow the use of these definitions by KVM for decoding cache ops,
break the definitions down into parts where it makes sense to do so, and
add masks for the Cache and Op field within the cache op.Signed-off-by: James Hogan
Cc: linux-mips@linux-mips.org
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11892/
Signed-off-by: Ralf Baechle -
The first argument to set_except_vector is the ExcCode, which we now
have definitions for. Lets make use of them.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11894/
Signed-off-by: Ralf Baechle -
Add a few missing trap codes.
[ralf@linux-mips.org: Drop removal of exception codes. I don't care what
the incomplete architecture spec says; it can't change existing hardware
and VCEI is supported indeed.]Signed-off-by: James Hogan
Cc: linux-mips@linux-mips.org
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11890/
Signed-off-by: Ralf Baechle -
Move the Cause.ExcCode trap code definitions from kvm_host.h to
mipsregs.h, since they describe architectural bits rather than KVM
specific constants, and change the prefix from T_ to EXCCODE_.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11891/
Signed-off-by: Ralf Baechle -
The module init and exit functions have no need to be global, so make
them static.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11889/
Signed-off-by: Ralf Baechle -
When calculating the offsets into the commpage for dynamically
translated mtc0/mfc0 guest instructions, multiple offsetof()s are added
together to find the offset of the specific register in the mips_coproc,
within the commpage.Simplify each of these cases to a single offsetof() to find the offset
of the specific register within the commpage.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11888/
Signed-off-by: Ralf Baechle -
Export symbols only to GPL modules to match other KVM symbols in
virt/kvm/ and arch/*/kvm/.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11887/
Signed-off-by: Ralf Baechle -
The function kvm_mips_host_tlb_inv_index() is unused, so drop it
completely.Signed-off-by: James Hogan
Cc: Ralf Baechle
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11886/
Signed-off-by: Ralf Baechle -
The CAUSEB_DC and CAUSEF_DC definitions used by KVM are defined in
asm/kvm_host.h, but all the other Cause register field definitions are
found in asm/mipsregs.h.Lets reunite the DC bit definitions with its friends in mipsregs.h.
Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11885/
Signed-off-by: Ralf Baechle -
Some definitions in the MIPS asm/kvm_host.h are completely unused, so
lets drop them.MS_TO_NS is no longer used since commit e30492bbe95a ("MIPS: KVM:
Rewrite count/compare timer emulation"). The others don't appear ever to
have been used.Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11884/
Signed-off-by: Ralf Baechle -
A bunch of misc whitespace and style fixes within arch/mips/kvm/.
Signed-off-by: James Hogan
Cc: Paolo Bonzini
Cc: Ralf Baechle
Cc: Gleb Natapov
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11883/
Signed-off-by: Ralf Baechle -
This adds an initial default config that enables all available PIC32
drivers and is enough for booting a PIC32MZDA Starter Kit.Signed-off-by: Joshua Henderson
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12105/
Signed-off-by: Ralf Baechle -
This adds basic DTS configuration for the PIC32MZDA chip and in turn the
PIC32MZDA Starter Kit.Signed-off-by: Joshua Henderson
Cc: Rob Herring
Cc: Pawel Moll
Cc: Mark Rutland
Cc: Ian Campbell
Cc: Kumar Gala
Cc: Andrew Bresticker
Cc: Paul Burton
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12104/
Signed-off-by: Ralf Baechle -
This adds support for the Microchip PIC32 MIPS microcontroller with the
specific variant PIC32MZDA. PIC32MZDA is based on the MIPS m14KEc core
and boots using device tree.This includes an early pin setup and early clock setup needed prior to
device tree being initialized. In additon, an interface is provided to
synchronize access to registers shared across several peripherals.Signed-off-by: Joshua Henderson
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12097/
Signed-off-by: Ralf Baechle -
Add brcm,bcm6358-leds node to bcm6368.dtsi
Add reboot support (syscon-reboot as defined in BCM6328)Signed-off-by: Álvaro Fernández Rojas
Reviewed-by: Florian Fainelli
Cc: f.fainelli@gmail.com
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Álvaro Fernández Rojas
Patchwork: https://patchwork.linux-mips.org/patch/12117/
Signed-off-by: Ralf Baechle -
Adds bcm6328-leds node to bcm6328.dtsi
Signed-off-by: Álvaro Fernández Rojas
Reviewed-by: Florian Fainelli
Cc: jogo@openwrt.org
Cc: cernekee@gmail.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: Álvaro Fernández Rojas
Patchwork: https://patchwork.linux-mips.org/patch/12116/
Signed-off-by: Ralf Baechle -
The cp0_tcstatus member of struct pt_regs was removed along with the
rest of SMTC in v3.16, commit b633648c5ad3 ("MIPS: MT: Remove SMTC
support"), however recent uprobes support in v4.3 added back a reference
to it in the regoffset_table[] in ptrace.c. Remove it.Signed-off-by: James Hogan
Fixes: 40e084a506eb ("MIPS: Add uprobes support.")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11920/
Signed-off-by: Ralf Baechle -
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.Signed-off-by: Linus Walleij
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11925/
Signed-off-by: Ralf Baechle -
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.Signed-off-by: Linus Walleij
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11924/
Signed-off-by: Ralf Baechle -
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.Signed-off-by: Linus Walleij
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11923/
Signed-off-by: Ralf Baechle -
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.Signed-off-by: Linus Walleij
Acked-by: Florian Fainelli
Cc: Alban Bedel
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11922/
Signed-off-by: Ralf Baechle -
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.Signed-off-by: Linus Walleij
Cc: linux-mips@linux-mips.org
Cc: linux-gpio@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11921/
Signed-off-by: Ralf Baechle -
Change the CONFIG_MIPS_CMDLINE_EXTEND to CONFIG_MIPS_CMDLINE_DTB_EXTEND
to resolve the EXTEND_WITH_PROM macro.Signed-off-by: Jaedon Shin
Fixes: 2024972ef533 ("MIPS: Make the kernel arguments from dtb available")
Reviewed-by: Alexander Sverdlin
Cc: Jonas Gorski
Cc: Masahiro Yamada
Cc: Paul Burton
Cc: Aaro Koskinen
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11909/
Signed-off-by: Ralf Baechle -
The kernel currently assumes that a core will start up in legacy mode
using the exception base provided through the CM GCR registers. If a
core has been configured in hardware to start in EVA mode, these
assumptions will fail.This patch ensures that secondary cores are initialized to meet these
assumptions.Signed-off-by: Matt Redfearn
Reviewed-by: Paul Burton
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11907/
Signed-off-by: Ralf Baechle -
Signed-off-by: Maciej W. Rozycki
Cc: Brian Norris
Cc: Rafał Miłecki
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12040/
Signed-off-by: Ralf Baechle -
Signed-off-by: Maciej W. Rozycki
Cc: Aurelien Jarno
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12178/
Signed-off-by: Ralf Baechle -
Fix the description of the microMIPS NOP16 encoding or MM_NOP16, which
is not equivalent to the MIPS16 NOP instruction. This is 0x0c00 and
represents the microMIPS `MOVE16 $0, $0' operation, whereas MIPS16 NOP
is encoded as 0x6500, representing `MOVE $0, $16'.Also fix a typo in `mm_fp0_format' description.
Signed-off-by: Maciej W. Rozycki
Cc: Aurelien Jarno
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12177/
Signed-off-by: Ralf Baechle -
Remove irrelevant content from the description of the emulation frame in
`mips_dsemul', referring to bare-metal configurations. Update the text,
reflecting the change made with commit ba3049ed4086 ("MIPS: Switch FPU
emulator trap to BREAK instruction."), where we switched from using an
address error exception on an unaligned access to the use of a BREAK 514
instruction causing a breakpoint exception instead.Signed-off-by: Maciej W. Rozycki
Cc: Aurelien Jarno
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12176/
Signed-off-by: Ralf Baechle -
Emulate the microMIPS ADDIUPC instruction directly in `mips_dsemul'. If
executed in the emulation frame, this instruction produces an incorrect
result, because the value of the PC there is not the same as where the
instruction originated.Reshape code so as to handle all microMIPS cases together.
Signed-off-by: Maciej W. Rozycki
Cc: Aurelien Jarno
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12175/
Signed-off-by: Ralf Baechle
