[ARM] 4190/2: Add the secondary GIC support for the RealView/EB

	MPCore platform

This patch adds the registration of the secondary GIC on the
baseboard, together with the IRQ chaining setup.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 29 insertions, 1 deletions

diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index b6a6f68cb699..00139143dcc1 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -57,7 +57,21 @@ static struct map_desc realview_eb_io_desc[] __initdata = {
                 .pfn            = __phys_to_pfn(REALVIEW_GIC_DIST_BASE),
                 .length         = SZ_4K,
                 .type           = MT_DEVICE,
+        },
+#ifdef CONFIG_REALVIEW_MPCORE
+        {
+                .virtual        = IO_ADDRESS(REALVIEW_GIC1_CPU_BASE),
+                .pfn            = __phys_to_pfn(REALVIEW_GIC1_CPU_BASE),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
         }, {
+                .virtual        = IO_ADDRESS(REALVIEW_GIC1_DIST_BASE),
+                .pfn            = __phys_to_pfn(REALVIEW_GIC1_DIST_BASE),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        },
+#endif
+        {
                 .virtual        = IO_ADDRESS(REALVIEW_SCTL_BASE),
                 .pfn            = __phys_to_pfn(REALVIEW_SCTL_BASE),
                 .length         = SZ_4K,
@@ -145,6 +159,11 @@ static void __init gic_init_irq(void)
 #endif
         gic_dist_init(0, __io_address(REALVIEW_GIC_DIST_BASE), 29);
         gic_cpu_init(0, __io_address(REALVIEW_GIC_CPU_BASE));
+#ifdef CONFIG_REALVIEW_MPCORE
+        gic_dist_init(1, __io_address(REALVIEW_GIC1_DIST_BASE), 64);
+        gic_cpu_init(1, __io_address(REALVIEW_GIC1_CPU_BASE));
+        gic_cascade_irq(1, IRQ_EB_IRQ1);
+#endif
 }
 
 static void __init realview_eb_init(void)
diff --git a/include/asm-arm/arch-realview/irqs.h b/include/asm-arm/arch-realview/irqs.h
index 76b498eb20a6..5a5db56f86b8 100644
--- a/include/asm-arm/arch-realview/irqs.h
+++ b/include/asm-arm/arch-realview/irqs.h
@@ -78,6 +78,9 @@
 #define IRQ_PMU_SCU6            (IRQ_GIC_START + INT_PMU_SCU6)
 #define IRQ_PMU_SCU7            (IRQ_GIC_START + INT_PMU_SCU7)
 
+#define IRQ_EB_IRQ1             (IRQ_GIC_START + INT_EB_IRQ1)
+#define IRQ_EB_IRQ2             (IRQ_GIC_START + INT_EB_IRQ2)
+
 #define IRQMASK_WDOGINT         INTMASK_WDOGINT
 #define IRQMASK_SOFTINT         INTMASK_SOFTINT
 #define IRQMASK_COMMRx          INTMASK_COMMRx
@@ -115,4 +118,4 @@
 #define IRQMASK_ETH             INTMASK_ETH
 #define IRQMASK_USB             INTMASK_USB
 
-#define NR_IRQS                 (IRQ_GIC_START + 64)
+#define NR_IRQS                 (IRQ_GIC_START + 96)
diff --git a/include/asm-arm/arch-realview/platform.h b/include/asm-arm/arch-realview/platform.h
index 18d7c18b738c..bf52ca752a75 100644
--- a/include/asm-arm/arch-realview/platform.h
+++ b/include/asm-arm/arch-realview/platform.h
@@ -212,6 +212,8 @@
 #define REALVIEW_TWD_BASE               0x10100700
 #define REALVIEW_TWD_SIZE               0x00000100
 #define REALVIEW_GIC_DIST_BASE          0x10101000      /* Generic interrupt controller distributor */
+#define REALVIEW_GIC1_CPU_BASE        0x10040000        /* Generic interrupt controller CPU interface */
+#define REALVIEW_GIC1_DIST_BASE       0x10041000        /* Generic interrupt controller distributor */
 #endif
 #define REALVIEW_SMC_BASE             0x10080000        /* SMC */
         /* Reserved 0x10090000 - 0x100EFFFF */
@@ -306,7 +308,11 @@
 #define INT_USB                         29      /* USB controller */
 #define INT_TSPENINT                    30      /* Touchscreen pen */
 #define INT_TSKPADINT                   31      /* Touchscreen keypad */
+
 #else
+
+#define MAX_GIC_NR                      2
+
 #define INT_AACI                        0
 #define INT_TIMERINT0_1                 1
 #define INT_TIMERINT2_3                 2