ARM: introduce ARM_SINGLE_ARMV7M for ARMv7-M platforms

This introduces a new top level config symbol ARM_SINGLE_ARMV7M
for non-MMU, ARMv7-M platforms. It also support multiple ARMv7-M
platforms in one kernel image since the cores share the same
basic memory layout and interrupt controller. However, this works
only if the combined platforms also have a similar (main) memory
layout.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 80a2a14df6046492d4c14f350761e153f4d2bc19..75920edec3cc726bc092f4dc61d06ab354be4798 100644 (file)
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -329,6 +329,19 @@ config ARCH_MULTIPLATFORM
        select SPARSE_IRQ
        select USE_OF
 
+config ARM_SINGLE_ARMV7M
+       bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
+       depends on !MMU
+       select ARCH_WANT_OPTIONAL_GPIOLIB
+       select ARM_NVIC
+       select CLKSRC_OF
+       select COMMON_CLK
+       select CPU_V7M
+       select GENERIC_CLOCKEVENTS
+       select NO_IOPORT_MAP
+       select SPARSE_IRQ
+       select USE_OF
+
 config ARCH_REALVIEW
        bool "ARM Ltd. RealView family"
        select ARCH_WANT_OPTIONAL_GPIOLIB

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 2ea7f564ad986fdb01a0e92a89d36bead646c091..9553759bf922dfb577b2dbd2a2ca45138230c10a 100644 (file)
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1579,7 +1579,7 @@ config DEBUG_UART_8250_FLOW_CONTROL
 
 config DEBUG_UNCOMPRESS
        bool
-       depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG
+       depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG || ARM_SINGLE_ARMV7M
        default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \
                     (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
        help
@@ -1597,7 +1597,8 @@ config UNCOMPRESS_INCLUDE
        string
        default "debug/uncompress.h" if ARCH_MULTIPLATFORM || ARCH_MSM || \
                                        PLAT_SAMSUNG || ARCH_EFM32 || \
-                                       ARCH_SHMOBILE_LEGACY || ARCH_LPC18XX
+                                       ARCH_SHMOBILE_LEGACY || \
+                                       ARCH_LPC18XX || ARM_SINGLE_ARMV7M
        default "mach/uncompress.h"
 
 config EARLY_PRINTK