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>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4f5652d..ebaf088 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -254,26 +254,17 @@
#
choice
prompt "ARM system type"
- default ARCH_VERSATILE
+ default ARCH_MULTIPLATFORM
-config ARCH_SOCFPGA
- bool "Altera SOCFPGA family"
- select ARCH_WANT_OPTIONAL_GPIOLIB
- select ARM_AMBA
- select ARM_GIC
- select CACHE_L2X0
- select CLKDEV_LOOKUP
+config ARCH_MULTIPLATFORM
+ bool "Allow multiple platforms to be selected"
+ select ARM_PATCH_PHYS_VIRT
+ select AUTO_ZRELADDR
select COMMON_CLK
- select CPU_V7
- select DW_APB_TIMER
- select DW_APB_TIMER_OF
- select GENERIC_CLOCKEVENTS
- select GPIO_PL061 if GPIOLIB
- select HAVE_ARM_SCU
+ select MULTI_IRQ_HANDLER
select SPARSE_IRQ
select USE_OF
- help
- This enables support for Altera SOCFPGA Cyclone V platform
+ depends on MMU
config ARCH_INTEGRATOR
bool "ARM Ltd. Integrator family"
@@ -370,24 +361,6 @@
help
Support for Broadcom's BCMRing platform.
-config ARCH_HIGHBANK
- bool "Calxeda Highbank-based"
- select ARCH_WANT_OPTIONAL_GPIOLIB
- select ARM_AMBA
- select ARM_GIC
- select ARM_TIMER_SP804
- select CACHE_L2X0
- select CLKDEV_LOOKUP
- select COMMON_CLK
- select CPU_V7
- select GENERIC_CLOCKEVENTS
- select HAVE_ARM_SCU
- select HAVE_SMP
- select SPARSE_IRQ
- select USE_OF
- help
- Support for the Calxeda Highbank SoC based boards.
-
config ARCH_CLPS711X
bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
select CPU_ARM720T
@@ -568,18 +541,6 @@
help
Support for Intel's IXP4XX (XScale) family of processors.
-config ARCH_MVEBU
- bool "Marvell SOCs with Device Tree support"
- select GENERIC_CLOCKEVENTS
- select MULTI_IRQ_HANDLER
- select SPARSE_IRQ
- select CLKSRC_MMIO
- select GENERIC_IRQ_CHIP
- select IRQ_DOMAIN
- select COMMON_CLK
- help
- Support for the Marvell SoC Family with device tree support
-
config ARCH_DOVE
bool "Marvell Dove"
select CPU_V7
@@ -701,25 +662,6 @@
This enables support for NVIDIA Tegra based systems (Tegra APX,
Tegra 6xx and Tegra 2 series).
-config ARCH_PICOXCELL
- bool "Picochip picoXcell"
- select ARCH_REQUIRE_GPIOLIB
- select ARM_PATCH_PHYS_VIRT
- select ARM_VIC
- select CPU_V6K
- select DW_APB_TIMER
- select DW_APB_TIMER_OF
- select GENERIC_CLOCKEVENTS
- select GENERIC_GPIO
- select HAVE_TCM
- select NO_IOPORT
- select SPARSE_IRQ
- select USE_OF
- help
- This enables support for systems based on the Picochip picoXcell
- family of Femtocell devices. The picoxcell support requires device tree
- for all boards.
-
config ARCH_PNX4008
bool "Philips Nexperia PNX4008 Mobile"
select CPU_ARM926T
@@ -1043,6 +985,49 @@
Support for Xilinx Zynq ARM Cortex A9 Platform
endchoice
+menu "Multiple platform selection"
+ depends on ARCH_MULTIPLATFORM
+
+comment "CPU Core family selection"
+
+config ARCH_MULTI_V4
+ bool "ARMv4 based platforms (FA526, StrongARM)"
+ select ARCH_MULTI_V4_V5
+ depends on !ARCH_MULTI_V6_V7
+
+config ARCH_MULTI_V4T
+ bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
+ select ARCH_MULTI_V4_V5
+ depends on !ARCH_MULTI_V6_V7
+
+config ARCH_MULTI_V5
+ bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
+ select ARCH_MULTI_V4_V5
+ depends on !ARCH_MULTI_V6_V7
+
+config ARCH_MULTI_V4_V5
+ bool
+
+config ARCH_MULTI_V6
+ bool "ARMv6 based platforms (ARM11, Scorpion, ...)"
+ select CPU_V6
+ select ARCH_MULTI_V6_V7
+
+config ARCH_MULTI_V7
+ bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)"
+ select CPU_V7
+ default y
+ select ARCH_MULTI_V6_V7
+
+config ARCH_MULTI_V6_V7
+ bool
+
+config ARCH_MULTI_CPU_AUTO
+ def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
+ select ARCH_MULTI_V5
+
+endmenu
+
#
# This is sorted alphabetically by mach-* pathname. However, plat-*
# Kconfigs may be included either alphabetically (according to the
@@ -1070,6 +1055,8 @@
source "arch/arm/mach-h720x/Kconfig"
+source "arch/arm/mach-highbank/Kconfig"
+
source "arch/arm/mach-integrator/Kconfig"
source "arch/arm/mach-iop32x/Kconfig"
@@ -1105,6 +1092,8 @@
source "arch/arm/mach-orion5x/Kconfig"
+source "arch/arm/mach-picoxcell/Kconfig"
+
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/plat-pxa/Kconfig"
@@ -1117,6 +1106,8 @@
source "arch/arm/plat-samsung/Kconfig"
source "arch/arm/plat-s3c24xx/Kconfig"
+source "arch/arm/mach-socfpga/Kconfig"
+
source "arch/arm/plat-spear/Kconfig"
source "arch/arm/mach-s3c24xx/Kconfig"
@@ -2081,7 +2072,7 @@
config XIP_KERNEL
bool "Kernel Execute-In-Place from ROM"
- depends on !ZBOOT_ROM && !ARM_LPAE
+ depends on !ZBOOT_ROM && !ARM_LPAE && !ARCH_MULTIPLATFORM
help
Execute-In-Place allows the kernel to run from non-volatile storage
directly addressable by the CPU, such as NOR flash. This saves RAM