Commit Graph

41 Commits

Author SHA1 Message Date
Vineet Gupta
624b71ee20 ARCv2: support HS38 releases
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-07-13 13:33:23 +05:30
Vineet Gupta
b631788ab4 ARC: slightly refactor macros for boot logging
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-07-09 17:36:33 +05:30
Vineet Gupta
aa93e8ef98 ARCv2: clocksource: Introduce 64bit local RTC counter
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-22 14:06:56 +05:30
Vineet Gupta
4255b07f2c ARCv2: STAR 9000793984: Handle return from intr to Delay Slot
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-22 14:06:55 +05:30
Vineet Gupta
1f6ccfff63 ARCv2: Support for ARCv2 ISA and HS38x cores
The notable features are:
    - SMP configurations of upto 4 cores with coherency
    - Optional L2 Cache and IO-Coherency
    - Revised Interrupt Architecture (multiple priorites, reg banks,
        auto stack switch, auto regfile save/restore)
    - MMUv4 (PIPT dcache, Huge Pages)
    - Instructions for
	* 64bit load/store: LDD, STD
	* Hardware assisted divide/remainder: DIV, REM
	* Function prologue/epilogue: ENTER_S, LEAVE_S
	* IRQ enable/disable: CLRI, SETI
	* pop count: FFS, FLS
	* SETcc, BMSKN, XBFU...

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-22 14:06:55 +05:30
Vineet Gupta
10d11e580c ARC: uncached base is hard constant for ARC, don't save it
ioremap already uses the hard define, just make sure BCR value matches
that

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-22 14:06:54 +05:30
Vineet Gupta
036b2c5664 ARC: explicit'ify uboot support
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:27 +05:30
Vineet Gupta
565a9b497c ARC: RIP broken 64bit RTSC
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-06-19 18:09:24 +05:30
Vineet Gupta
a44ec8bd2a ARC: Fix RTT boot printing
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-04-13 15:15:17 +05:30
Vineet Gupta
4c86231c14 ARC: fix /proc/cpuinfo for offline cpus
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-02 17:08:37 +05:30
Vineet Gupta
5637208253 ARC: boot: cpu feature print enhancements
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:22 +05:30
Vineet Gupta
c4b9856b5e ARC: boot: consolidate cross-checking of h/w and s/w
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:22 +05:30
Vineet Gupta
435abb6daf ARC: RIP @running_on_hw
* No active users of this flag anymore

* flag itself was no longer usable with new simualtor which acts just like
  hardware, not providing the special chip-id = 0xffff which good old
  ISS used to do.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:17 +05:30
Vineet Gupta
d7f8a085d4 ARC: [plat*] move code out of .init_machine into common
All the platforms do the same thing in init_machine callback so move it
out of callback into caller of callback

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-10-13 14:46:13 +05:30
Vineet Gupta
619f30188f ARC: Allow SMP kernel to build/boot on UP-only infrastructure
In light of recent SNAFU with SMP build, allow simple platform to build
as SMP but run UP.

* Remove the dependence on simulation SMP extension to enable quick
  build/test iterations of SMP kernel.

* In absence of platform SMP registration, prevent the NULL smp feature
  name from borkign the system

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-09-27 14:49:01 +05:30
Vineet Gupta
e57d339a62 ARC: [cmdline] support External Device Trees from u-boot
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-01-16 18:53:16 +05:30
Vineet Gupta
59ed941353 ARC: [cmdline] uboot cmdline handling rework
* Moved cmdline copy from asm to "C" - allows for more robust checking
  of pointer validity etc.

* Remove the Kconfig option to do so, base it on a runtime value passed
  by u-boot

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2014-01-16 18:49:38 +05:30
Linus Torvalds
10d0c9705e Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
 "DeviceTree updates for 3.13.  This is a bit larger pull request than
  usual for this cycle with lots of clean-up.

   - Cross arch clean-up and consolidation of early DT scanning code.
   - Clean-up and removal of arch prom.h headers.  Makes arch specific
     prom.h optional on all but Sparc.
   - Addition of interrupts-extended property for devices connected to
     multiple interrupt controllers.
   - Refactoring of DT interrupt parsing code in preparation for
     deferred probe of interrupts.
   - ARM cpu and cpu topology bindings documentation.
   - Various DT vendor binding documentation updates"

* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
  powerpc: add missing explicit OF includes for ppc
  dt/irq: add empty of_irq_count for !OF_IRQ
  dt: disable self-tests for !OF_IRQ
  of: irq: Fix interrupt-map entry matching
  MIPS: Netlogic: replace early_init_devtree() call
  of: Add Panasonic Corporation vendor prefix
  of: Add Chunghwa Picture Tubes Ltd. vendor prefix
  of: Add AU Optronics Corporation vendor prefix
  of/irq: Fix potential buffer overflow
  of/irq: Fix bug in interrupt parsing refactor.
  of: set dma_mask to point to coherent_dma_mask
  of: add vendor prefix for PHYTEC Messtechnik GmbH
  DT: sort vendor-prefixes.txt
  of: Add vendor prefix for Cadence
  of: Add empty for_each_available_child_of_node() macro definition
  arm/versatile: Fix versatile irq specifications.
  of/irq: create interrupts-extended property
  microblaze/pci: Drop PowerPC-ism from irq parsing
  of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
  of/irq: Use irq_of_parse_and_map()
  ...
2013-11-12 16:52:17 +09:00
Vineet Gupta
8e457d6a75 ARC: Annotate some functions as static
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-11-06 10:40:37 +05:30
Rob Herring
be5973117b arc: remove unnecessary prom.h includes
Remove unnecessary prom.h includes in preparation to remove prom.h.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
2013-10-09 20:04:01 -05:00
Rob Herring
880beb8807 arc: use common of_flat_dt_match_machine
Convert arc to use the common of_flat_dt_match_machine function.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
2013-10-09 20:03:55 -05:00
Rob Herring
1efc959e0b arc: use unflatten_and_copy_device_tree
Use the common unflatten_and_copy_device_tree to copy the built-in FDT
out of init section.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
2013-10-09 11:38:03 -05:00
Noam Camus
c3567f8a35 ARC: SMP failed to boot due to missing IVT setup
Commit 05b016ecf5 "ARC: Setup Vector Table Base in early boot" moved
the Interrupt vector Table setup out of arc_init_IRQ() which is called
for all CPUs, to entry point of boot cpu only, breaking booting of others.

Fix by adding the same to entry point of non-boot CPUs too.

read_arc_build_cfg_regs() printing IVT Base Register didn't help the
casue since it prints a synthetic value if zero which is totally bogus,
so fix that to print the exact Register.

[vgupta: Remove the now stale comment from header of arc_init_IRQ and
also added the commentary for halt-on-reset]

Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Cc: Cc: <stable@vger.kernel.org> #3.11
Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-12 07:40:08 -07:00
Mischa Jonker
8508d5653f ARC: remove console_verbose() from setup_arch()
It prevents kernel parameters such as 'loglevel' from doing their job.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-09-05 10:31:12 +05:30
Paul Gortmaker
ce7599567e arc: delete __cpuinit usage from all arc files
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications.  For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.

After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out.  Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.

Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
are flagged as __cpuinit  -- so if we remove the __cpuinit from
arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
content into no-ops as early as possible, since that will get rid
of these warnings.  In any case, they are temporary and harmless.

This removes all the arch/arc uses of the __cpuinit macros from
all C files.  Currently arc does not have any __CPUINIT used in
assembly files.

[1] https://lkml.org/lkml/2013/5/20/589

Cc: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-06-27 14:37:58 +05:30