[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>

4 files changed, 21 insertions, 1 deletions

diff --git a/include/asm-arm/arch-realview/hardware.h b/include/asm-arm/arch-realview/hardware.h
index 9ca76dc3a7af..aa78fe087ab2 100644
--- a/include/asm-arm/arch-realview/hardware.h
+++ b/include/asm-arm/arch-realview/hardware.h
@@ -26,7 +26,7 @@
 #include <asm/arch/platform.h>
 
 /* macro to get at IO space when running virtually */
-#define IO_ADDRESS(x)           (((x) & 0x0fffffff) + (((x) >> 4) & 0x0f000000) + 0xf0000000)
+#define IO_ADDRESS(x)           ((((x) & 0x0effffff) | (((x) >> 4) & 0x0f000000)) + 0xf0000000)
 #define __io_address(n)         __io(IO_ADDRESS(n))
 
 #endif
diff --git a/include/asm-arm/arch-realview/platform.h b/include/asm-arm/arch-realview/platform.h
index bf52ca752a75..87acd9c191e6 100644
--- a/include/asm-arm/arch-realview/platform.h
+++ b/include/asm-arm/arch-realview/platform.h
@@ -207,11 +207,21 @@
 #define REALVIEW_GIC_CPU_BASE         0x10040000        /* Generic interrupt controller CPU interface */
 #define REALVIEW_GIC_DIST_BASE        0x10041000        /* Generic interrupt controller distributor */
 #else
+#ifdef CONFIG_REALVIEW_MPCORE_REVB
 #define REALVIEW_MPCORE_SCU_BASE        0x10100000      /*  SCU registers */
 #define REALVIEW_GIC_CPU_BASE           0x10100100      /* Generic interrupt controller CPU interface */
 #define REALVIEW_TWD_BASE               0x10100700
 #define REALVIEW_TWD_SIZE               0x00000100
 #define REALVIEW_GIC_DIST_BASE          0x10101000      /* Generic interrupt controller distributor */
+#define REALVIEW_MPCORE_SYS_PLD_CTRL1 0xD8              /*  Register offset for MPCore sysctl */
+#else
+#define REALVIEW_MPCORE_SCU_BASE      0x1F000000        /*  SCU registers */
+#define REALVIEW_GIC_CPU_BASE         0x1F000100        /* Generic interrupt controller CPU interface */
+#define REALVIEW_TWD_BASE             0x1F000700
+#define REALVIEW_TWD_SIZE             0x00000100
+#define REALVIEW_GIC_DIST_BASE        0x1F001000        /* Generic interrupt controller distributor */
+#define REALVIEW_MPCORE_SYS_PLD_CTRL1 0x74              /*  Register offset for MPCore sysctl */
+#endif
 #define REALVIEW_GIC1_CPU_BASE        0x10040000        /* Generic interrupt controller CPU interface */
 #define REALVIEW_GIC1_DIST_BASE       0x10041000        /* Generic interrupt controller distributor */
 #endif
diff --git a/include/asm-arm/arch-realview/scu.h b/include/asm-arm/arch-realview/scu.h
new file mode 100644
index 000000000000..cc293640178e
--- /dev/null
+++ b/include/asm-arm/arch-realview/scu.h
@@ -0,0 +1,8 @@
+#ifndef __ASMARM_ARCH_SCU_H
+#define __ASMARM_ARCH_SCU_H
+
+#include <asm/arch/platform.h>
+
+#define SCU_BASE        REALVIEW_MPCORE_SCU_BASE
+
+#endif
diff --git a/include/asm-arm/hardware/arm_scu.h b/include/asm-arm/hardware/arm_scu.h
index 9903f60c84b7..7d28eb5a1758 100644
--- a/include/asm-arm/hardware/arm_scu.h
+++ b/include/asm-arm/hardware/arm_scu.h
@@ -1,6 +1,8 @@
 #ifndef ASMARM_HARDWARE_ARM_SCU_H
 #define ASMARM_HARDWARE_ARM_SCU_H
 
+#include <asm/arch/scu.h>
+
 /*
  * SCU registers
  */