Commit Graph

42 Commits

Author SHA1 Message Date
Linus Walleij 8f2c00629e ARM: realview: imply device tree boot
This reduces the Kconfig for the RealView by assuming we are
always booting from the device tree, and removing all the uses
of CONFIG_REALVIEW_DT and replacing with CONFIG_ARCH_REALVIEW.

Further:

- Drop REALVIEW_HIGH_PHYS_OFFSET: we don't use this with device
  tree.

- Drop the REALVIEW_EB_ARM11MP_REVB option: we now handle this
  by simply using another device tree.

- Drop the PB1176 secure flash option: this is defined in the
  PB1176 device tree but marked as "disabled", so users who
  want to use it can simply enable it in the device tree and
  go hacking around.

Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-08-15 20:53:07 +02:00
Vladimir Murzin 21c170c28e ARM: realview: no need to select SMP_ON_UP explicitly
SMP_ON_UP is already defaulted to "y" and has all dependencies expressed
- no need to select it per platform level

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-08-15 20:52:57 +02:00
Masahiro Yamada c65cd255e4 ARM: realview: use "depends on" instead of "if" after prompt
This platform recently moved to multi-platform, so missed the global
fixup by commit e324654294 ("ARM: use "depends on" for SoC configs
instead of "if" after prompt").  Fix it now.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2016-02-01 12:19:10 -08:00
Arnd Bergmann 2cb58c0166 ARM: realview: don't select SMP_ON_UP for UP builds
When CONFIG_SMP is disabled, we get a warning from Kconfig:

warning: (SOC_IMX31 && SOC_IMX35 && SOC_VF610 && REALVIEW_DT) selects SMP_ON_UP which has unmet direct dependencies (SMP && !XIP_KERNEL && MMU)

This changes the REALVIEW_DT Kconfig entry to not select SMP_ON_UP
unless SMP is also set.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-12-31 23:52:20 +01:00
Arnd Bergmann 2934167dd0 ARM: realview: enable multiplatform
All obstacles are out of the way by now, so we can finally move realview
to multiplatform.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
[Rebased Kconfig, fixed if $(X) to if X in Makefile]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-18 14:08:15 +01:00
Linus Walleij 5420b4b156 ARM: realview: add an DT SMP boot method
This adds an SMP boot method for the ARM RealView reference
designs. We also select HAVE_SMP by default and make it use
SMP_ON_UP so we only need to support one single kernel across
the RealView reference designs when using DT.

The RealViews need to have the SCU (Snoop Control Unit)
activated on boot, and this is now done by looking up its
address from the device tree and initializing it and counting
the available cores.

The RealViews boot by using a magic address register in the
system controller (SYS_FLAGS) to store the boot address,
the ROM will then read this register to the PC when the CPUs
are taken out of WFI. This code uses a handle to the syscon
regmap to access this register.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:42:52 +01:00
Linus Walleij ca5b21fa6e ARM: realview: select SP810 and ICST for the DT variant
The device tree boot for RealView need the SP810 system controller
(same as found on the Versatile Express) to set up the timers on the
board so the machine can tick. It further utilize the ICST307 through
its system controller for 6 other oscillators. We have to select these
from Kconfig or the machine does not boot.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:42:51 +01:00
Arnd Bergmann 2b749cb3a5 ARM: realview: remove private barrier implementation
The realview barrier implementation tries to avoid calling outer_sync in order
to not lock up as a result of a bug in the l220 cache controller.

This gets in the way of the multiplatform support, but we can still remove
it if we make sure that the outer_sync function never gets called, by replacing
the function pointer with NULL, right after initialization.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[Fixed up header inclusions]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:41:34 +01:00
Arnd Bergmann fd0053c9eb ARM: realview: remove sparsemem hack
The realview-pbx platform has an elaborate way of avoiding the use of highmem
by redefining its phys_to_virt function. In practice this doesn't help all
that much, and it gets in the way of doing multiplatform builds for
realview.

This removes the feature and kills off the mach/memory.h file for realview.
We also lose the ability to do sparsemem with this patch, but that should
be put back into place for generic multiplatform configurations, to save
a little memory on PBX.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-15 09:41:31 +01:00
Linus Walleij fa6e2eec15 ARM: realview: basic device tree implementation
This implements basic device tree boot support for the RealView
platforms, with a basic device tree for ARM PB1176 as an example.

The implementation is done with a new DT-specific board file
using only pre-existing bindings for the basic IRQ, timer and
serial port drivers. A new compatible type is added to the GIC
for the ARM1176.

This implementation uses the MFD syscon handle from day one to
access the system controller registers, and register the devices
using the SoC bus.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh@kernel.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-10-22 13:48:20 +02:00
Stephen Boyd a894fcc2d0 ARM: smp_twd: Divorce smp_twd from local timer API
Separate the smp_twd timers from the local timer API. This will
allow us to remove ARM local timer support in the near future and
gets us closer to moving this driver to drivers/clocksource.

Tested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2013-06-24 17:45:58 -07:00
Stephen Boyd 4c3ffffdbc ARM: Push selects for TWD/SCU into machine entries
The TWD and SCU configs are selected by default as long as
MSM_SCORPIONMP is false and/or MCT is false. Implementing the
logic this way certainly saves lines in the Kconfig but it
precludes those machines which select MSM_SCORPIONMP or MCT from
participating in the single zImage effort because when those
machines are combined with other SMP capable machines the TWD and
SCU are no longer selected by default.

Push the select out to the machine entries so that we can compile
these machines together and still select the appropriate configs.

Cc: Barry Song <baohua.song@csr.com>
Acked-by: David Brown <davidb@codeaurora.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Simon Horman <horms@verge.net.au>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-09 21:30:24 +02:00
Russell King b1b3f49ce4 ARM: config: sort select statements alphanumerically
As suggested by Andrew Morton:

  This is a pet peeve of mine.  Any time there's a long list of items
  (header file inclusions, kconfig entries, array initalisers, etc) and
  someone wants to add a new item, they *always* go and stick it at the
  end of the list.

  Guys, don't do this.  Either put the new item into a randomly-chosen
  position or, probably better, alphanumerically sort the list.

lets sort all our select statements alphanumerically.  This commit was
created by the following perl:

while (<>) {
	while (/\\\s*$/) {
		$_ .= <>;
	}
	undef %selects if /^\s*config\s+/;
	if (/^\s+select\s+(\w+).*/) {
		if (defined($selects{$1})) {
			if ($selects{$1} eq $_) {
				print STDERR "Warning: removing duplicated $1 entry\n";
			} else {
				print STDERR "Error: $1 differently selected\n".
					"\tOld: $selects{$1}\n".
					"\tNew: $_\n";
				exit 1;
			}
		}
		$selects{$1} = $_;
		next;
	}
	if (%selects and (/^\s*$/ or /^\s+help/ or /^\s+---help---/ or
			  /^endif/ or /^endchoice/)) {
		foreach $k (sort (keys %selects)) {
			print "$selects{$k}";
		}
		undef %selects;
	}
	print;
}
if (%selects) {
	foreach $k (sort (keys %selects)) {
		print "$selects{$k}";
	}
}

It found two duplicates:

Warning: removing duplicated S5P_SETUP_MIPIPHY entry
Warning: removing duplicated HARDIRQS_SW_RESEND entry

and they are identical duplicates, hence the shrinkage in the diffstat
of two lines.

We have four testers reporting success of this change (Tony, Stephen,
Linus and Sekhar.)

Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-13 17:11:28 +01:00
Dave Martin 3b55658aef ARM: SMP: Refactor Kconfig to be more maintainable
Making SMP depend on (huge list of MACH_ and ARCH_ configs) is
bothersome to maintain and likely to lead to merge conflicts.

This patch moves the knowledge of which platforms are SMP-capable
to the individual machines.  To enable this, a new HAVE_SMP config
option is introduced to allow machines to indicate that they can
run in a SMP configuration.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
        (for nomadik, ux500)
Acked-by: Tony Lindgren <tony@atomide.com>
        (for omap)
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
        (for exynos)
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
        (for imx)
Acked-by: Olof Johansson <olof@lixom.net>
        (for tegra)
2011-12-19 13:47:39 +00:00
Dave Martin ce5ea9f376 ARM: l2x0/pl310: Refactor Kconfig to be more maintainable
Making CACHE_L2X0 depend on (huge list of MACH_ and ARCH_ configs)
is bothersome to maintain and likely to lead to merge conflicts.

This patch moves the knowledge of which platforms have a L2x0 or
PL310 cache controller to the individual machines.  To enable this,
a new MIGHT_HAVE_CACHE_L2X0 config option is introduced to allow
machines to indicate that they may have such a cache controller
independently of each other.

Boards/SoCs which cannot reliably operate without the L2 cache
controller support will need to select CACHE_L2X0 directly from
their own Kconfigs instead.  This applies to some TrustZone-enabled
boards where Linux runs in the Normal World, for example.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
        (for cns3xxx)
Acked-by: Tony Lindgren <tony@atomide.com>
        (for omap)
Acked-by: Shawn Guo <shawn.guo@linaro.org>
        (for imx)
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
        (for exynos)
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
        (for imx)
Acked-by: Olof Johansson <olof@lixom.net>
        (for tegra)
2011-12-19 13:46:11 +00:00
Linus Walleij f022e4e41b ARM: 6986/1: mach-realview: add TCM support for PB1176
Enable TCM support on the RealView PB1176 - we have now taken
the precautions necessary to support even multi-board builds of
RealView systems with TCM enabled.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-06 20:49:45 +01:00
Russell King 74200e6421 ARM: v6k: Realview EB 11MPCore and PB11MPCore use V6K architecture CPUs
Make Realview EB ARM11MPCore and PB11MPCore select the new V6K CPU
option.

Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-02 21:23:27 +00:00
Russell King d2a1c9ad78 ARM: realview: name configuration options after actual board names
As no one seems to really know which configuration options tie up with
which boards, I thought I'd do some investigation and try to work it
out.  After discussion with some folk in linaro, I think I have this
nailed.

The names are updated to use the name on the front of the appropriate
board user guide for the various baseboards, which I've taken to be
the official name for each board.

I haven't significantly updated the descriptions for the tiles as that
is even less clear - as far as I can see on ARMs website, there is no
Cortex-A9 tile for Realview EB - only ARM11MPCore, ARM1156T2F-S,
ARM1176TZF-S and Cortex-R4F.  So exactly what this 'Multicore Cortex-A9
Tile' is...

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-01-25 15:08:01 +00:00
Catalin Marinas 2503a5ecd8 ARM: 6201/1: RealView: Do not use outer_sync() on ARM11MPCore boards with L220
RealView boards with certain revisions of the L220 cache controller (ARM11*
processors only) may have issues (hardware deadlock) with the recent changes to
the mb() barrier implementation (DSB followed by an L2 cache sync). The patch
redefines the RealView ARM11MPCore mandatory barriers without the outer_sync()
call.

Cc: <stable@kernel.org>
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-02 10:10:09 +01:00
Catalin Marinas c52854018a ARM: RealView: Fix typo in the RealView/PBX Kconfig entry
A previous patch was introducing a SPARSEMEM dependency on
!HIGH_PHYS_OFFSET but it should actually be !REALVIEW_HIGH_PHYS_OFFSET.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-12-09 13:19:42 +00:00
Catalin Marinas c97c5aa83c RealView: Add sparsemem support for the RealView PBX platform
The RealView PBX board has two 512MB blocks of memory - one at
0x70000000 (with 256MB mirror at 0) and another at 0x20000000. Only the
block at 0x70000000 (or the mirror at 0) may be used for DMA (e.g.
framebuffer). This patch adds the sparsemem definitions to allow the use
of all the memory split as follows:

  256MB @ 0x00000000 (ZONE_DMA)
  512MB @ 0x20000000 (ZONE_NORMAL)
  256MB @ 0x80000000 (ZONE_NORMAL)

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-11-05 10:10:36 +00:00
Catalin Marinas 0e0fe9219d nommu: Do not allow REALVIEW_HIGH_PHYS_OFFSET if !MMU
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-07-24 12:35:05 +01:00
Russell King 42578c82e0 Merge branch 'for-rmk' of git://linux-arm.org/linux-2.6 into devel
Conflicts:
	arch/arm/Kconfig
	arch/arm/kernel/smp.c
	arch/arm/mach-realview/Makefile
	arch/arm/mach-realview/platsmp.c
2009-06-11 15:35:00 +01:00
Russell King a22f277bba [ARM] Kconfig: remove 'default n'
Kconfig entries default to n, so there's no need for this to be
explicitly specified.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-31 15:12:25 +01:00
Catalin Marinas af607747de RealView: Allow access to the secure flash memory block on PB1176
This patch adds a Kconfig option for specifying whether Linux will only
be run in secure mode on the RealView PB1176 platform. Enabling it will
make the secure flash memory block (64MB @ 0x3c000000) available to
Linux.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-05-30 13:56:13 +01:00
Colin Tuckley 1b504bbe7a RealView: Add support for the RealView/PBX platform
This is a RealView platform supporting core tiles with ARM11MPCore,
Cortex-A8 or Cortex-A9 (multicore) processors. It has support for MMC,
CompactFlash, PCI-E.

Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2009-05-30 13:56:12 +01:00
Catalin Marinas 6be62ba215 [ARM] 5396/1: RealView: Use PATA_PLATFORM to access the CompactFlash
This driver adds the platform_device definitions to allow the use of
CompactFlash on the RealView PB11MPCore and PB-A8 platforms. Note that
the CompactFlash controller is expected to be initialised by the Boot
Monitor and support the True IDE mode.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-02-19 11:30:26 +00:00
Russell King 657e1de8e7 Merge branch 'for-rmk-realview' of git://linux-arm.org/linux-2.6 into devel 2008-12-01 17:53:45 +00:00
Catalin Marinas 6f13d27883 RealView: Select CPU_V6 for MACH_REALVIEW_PB11MP
This seems to be missing from the arm:devel branch, though the other
RealView configurations were modified accordingly.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-12-01 14:55:00 +00:00
Jon Callan 4c3ea37171 RealView: Add Cortex-A9 support to the EB board
This patch adds the necessary definitions and Kconfig entries to enable
Cortex-A9 (ARMv7 SMP) tiles on the RealView/EB board.

Signed-off-by: Jon Callan <Jon.Callan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-12-01 14:54:56 +00:00
Bahadir Balban e7c70825a7 RealView: Add support for the Cortex-A8 Platform Baseboard
This patch adds support for RealView/PB-A8, a platform based on
Cortex-A8 with support for PCI-E and compact flash.

Signed-off-by: Bahadir Balban <bahadir.balban@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-12-01 14:54:55 +00:00
Catalin Marinas 70bb62f8ec RealView: Allow PHYS_OFFSET at 0x70000000
RealView boards like PB11MPCore have 512MB of RAM available contiguously
at 0x70000000. Half of the memory is mirrored at 0x00000000 for
backwards compatibility. This patch adds the
CONFIG_REALVIEW_HIGH_PHYS_OFFSET option option to change the physical
base address so that the full amount of RAM is available to Linux. Note
that the EB board has 256MB of RAM also mirrored at 0x70000000, the only
board without this feature being PB1176.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-12-01 14:54:55 +00:00
Russell King c750815e2d [ARM] Arrange for platforms to select appropriate CPU support
Rather than:

	config CPU_BLAH
		bool
		depends on ARCH_FOO || MACH_BAR
		default y if ARCH_FOO || MACH_BAR

arrange for ARCH_FOO and MACH_BAR to select CPU_BLAH directly.

Acked-by: Nicolas Pitre <nico@marvell.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Acked-by: Brian Swetland <swetland@google.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Bellido <ml@acolin.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-27 12:38:00 +00:00
Catalin Marinas ba9279519b Allow the L2X0 outer cache support to be configurable
By default, this option was selected by the platform Kconfig. This
patch adds "depends on" to L2X0 so that it can be enabled/disabled
manually.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-04-18 22:43:17 +01:00
Bahadir Balban bc02c58bd1 RealView: Add the configuration and build changes for PB1176
This patch enables the building of Linux for the PB1176 platform.

Signed-off-by: Bahadir Balban <bahadir.balban@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-04-18 22:43:16 +01:00
Bahadir Balban 78fdcb4287 RealView: Enable the configuration options for PB11MPCore
This patch adds the PB11MPCore support to the corresponding Kconfig
and Makefile to enable building.

Signed-off-by: Bahadir Balban <bahadir.balban@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2008-04-18 22:43:14 +01:00
Catalin Marinas 41579f49da [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option
This patch changes the REALVIEW_MPCORE configuration option to
REALVIEW_EB_ARM11MP since this is only specific to RealView/EB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 17:52:28 +00:00
Catalin Marinas 7770bddb27 [ARM] 4130/1: Add L220 support to RealView/EB
This patch enables the L220 on the RealView/EB MPCore platform.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 15:08:54 +00:00
Catalin Marinas 4b17244c13 [ARM] 4109/2: Add support for the RealView/EB MPCore revC platform
The kernel originally supported revB only. This patch enables revC by
default and adds a config option for building the kernel for the revB
platform. Since the SCU base address was hard-coded in the proc-v6.S
file (and only valid for RealView/EB revB), this patch also adds a
more generic support for defining the SCU information.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-15 14:56:32 +00:00
Russell King 5ff3fd2716 [ARM] Remove useless 'default n' from Kconfig files
The default is already 'n' so there's no need to explicitly state it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 21:09:17 +00:00
Russell King 9b1283bedd [ARM] Add support for Realview with MPcore tile
Add uniprocessor support for Realview platform fitted with the
MPcore (SMP) tile.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 21:01:06 +00:00
Catalin Marinas 8ad68bbf7a [ARM] Add support for ARM RealView board
Support for RealView EB.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-31 14:25:02 +00:00