[ARM] 4818/1: RealView: Add core-tile detection

This patch adds the core-tile detection and only enables devices if the
corresponding tile is present. It currently detects the ARM11MPCore via
the core_tile_eb11mp() macro.

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

1 files changed, 19 insertions, 0 deletions

diff --git a/include/asm-arm/arch-realview/board-eb.h b/include/asm-arm/arch-realview/board-eb.h
index 943efc5de4eb..9e76b236b529 100644
--- a/include/asm-arm/arch-realview/board-eb.h
+++ b/include/asm-arm/arch-realview/board-eb.h
@@ -149,4 +149,23 @@
 #define MAX_GIC_NR              NR_GIC_EB11MP
 #endif
 
+/*
+ * Core tile identification (REALVIEW_SYS_PROCID)
+ */
+#define REALVIEW_EB_PROC_MASK           0xFF000000
+#define REALVIEW_EB_PROC_ARM7TDMI       0x00000000
+#define REALVIEW_EB_PROC_ARM9           0x02000000
+#define REALVIEW_EB_PROC_ARM11          0x04000000
+#define REALVIEW_EB_PROC_ARM11MP        0x06000000
+
+#define check_eb_proc(proc_type)                                                \
+        ((readl(__io_address(REALVIEW_SYS_PROCID)) & REALVIEW_EB_PROC_MASK)     \
+         == proc_type)
+
+#ifdef CONFIG_REALVIEW_MPCORE
+#define core_tile_eb11mp()      check_eb_proc(REALVIEW_EB_PROC_ARM11MP)
+#else
+#define core_tile_eb11mp()      0
+#endif
+
 #endif  /* __ASM_ARCH_BOARD_EB_H */