ARM: initial multiplatform support

This lets us build a multiplatform kernel for experimental purposes.
However, it will not be useful for any real work, because it relies
on a number of useful things to be disabled for now:

* SMP support must be turned off because of conflicting symbols.
  Marc Zyngier has proposed a solution by adding a new SOC
  operations structure to hold indirect function pointers
  for these, but that work is currently stalled

* We turn on SPARSE_IRQ unconditionally, which is not supported
  on most platforms. Each of them is currently in a different
  state, but most are being worked on.

* A common clock framework is in place since v3.4 but not yet
  being used. Work on this is on its way.

* DEBUG_LL for early debugging is currently disabled.

* THUMB2_KERNEL does not work with allyesconfig because the
  kernel gets too big

[Rob Herring]: Rebased to not be dependent on the mass mach header rename.
As a result, omap2plus, imx, mxs and ux500 are not converted. Highbank,
picoxcell, mvebu, and socfpga are converted.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jamie Iles <jamie@jamieiles.com>
Cc: Dinh Nguyen <dinguyen@altera.com>

5 files changed, 12 insertions, 57 deletions

diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index caa2c5e734fe..7b270358536e 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -1,3 +1,13 @@
+config ARCH_MVEBU
+        bool "Marvell SOCs with Device Tree support" if ARCH_MULTI_V7
+        select CLKSRC_MMIO
+        select COMMON_CLK
+        select GENERIC_CLOCKEVENTS
+        select GENERIC_IRQ_CHIP
+        select IRQ_DOMAIN
+        select MULTI_IRQ_HANDLER
+        select SPARSE_IRQ
+
 if ARCH_MVEBU
 
 menu "Marvell SOC with device tree"
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index e61d2b8fdf50..6ea8998ab8f1 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -1,2 +1,4 @@
+ccflags-$(ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
+
 obj-y += system-controller.o
 obj-$(CONFIG_MACH_ARMADA_370_XP) += armada-370-xp.o irq-armada-370-xp.o
diff --git a/arch/arm/mach-mvebu/Makefile.boot b/arch/arm/mach-mvebu/Makefile.boot
deleted file mode 100644
index b3271754e9fd..000000000000
--- a/arch/arm/mach-mvebu/Makefile.boot
+++ /dev/null
@@ -1 +0,0 @@
-zreladdr-y := 0x00008000
diff --git a/arch/arm/mach-mvebu/include/mach/timex.h b/arch/arm/mach-mvebu/include/mach/timex.h
deleted file mode 100644
index ab324a3748f2..000000000000
--- a/arch/arm/mach-mvebu/include/mach/timex.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/*
- * Marvell Armada SoC time definitions
- *
- * Copyright (C) 2012 Marvell
- *
- * Lior Amsalem <alior@marvell.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#define CLOCK_TICK_RATE         (100 * HZ)
diff --git a/arch/arm/mach-mvebu/include/mach/uncompress.h b/arch/arm/mach-mvebu/include/mach/uncompress.h
deleted file mode 100644
index d6a100ccf302..000000000000
--- a/arch/arm/mach-mvebu/include/mach/uncompress.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Marvell Armada SoC kernel uncompression UART routines
- *
- * Copyright (C) 2012 Marvell
- *
- * Lior Amsalem <alior@marvell.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <mach/armada-370-xp.h>
-
-#define UART_THR ((volatile unsigned char *)(ARMADA_370_XP_REGS_PHYS_BASE\
-                                                                + 0x12000))
-#define UART_LSR ((volatile unsigned char *)(ARMADA_370_XP_REGS_PHYS_BASE\
-                                                                + 0x12014))
-
-#define LSR_THRE        0x20
-
-static void putc(const char c)
-{
-        int i;
-
-        for (i = 0; i < 0x1000; i++) {
-                /* Transmit fifo not full? */
-                if (*UART_LSR & LSR_THRE)
-                        break;
-        }
-
-        *UART_THR = c;
-}
-
-static void flush(void)
-{
-}
-
-/*
- * nothing to do
- */
-#define arch_decomp_setup()
-#define arch_decomp_wdog()