ARM: OMAP4: Add minimal support for omap4

This patch adds the support for OMAP4. The platform and machine specific
headers and sources updated for OMAP4430 SDP platform.

OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 70b68ef83201..66738c3854c3 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -2,6 +2,10 @@
  * linux/arch/arm/plat-omap/common.c
  *
  * Code common to all OMAP machines.
+ * The file is created by Tony Lindgren <tony@atomide.com>
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -217,6 +221,15 @@ static cycle_t omap34xx_32k_read(struct clocksource *cs)
 #define omap34xx_32k_read       NULL
 #endif
 
+#ifdef CONFIG_ARCH_OMAP4
+static cycle_t omap44xx_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap44xx_32k_read       NULL
+#endif
+
 /*
  * Kernel assumes that sched_clock can be called early but may not have
  * things ready yet.
@@ -264,6 +277,8 @@ static int __init omap_init_clocksource_32k(void)
                         clocksource_32k.read = omap2430_32k_read;
                 else if (cpu_is_omap34xx())
                         clocksource_32k.read = omap34xx_32k_read;
+                else if (cpu_is_omap44xx())
+                        clocksource_32k.read = omap44xx_32k_read;
                 else
                         return -ENODEV;
 
@@ -351,3 +366,19 @@ void __init omap2_set_globals_343x(void)
 }
 #endif
 
+#if defined(CONFIG_ARCH_OMAP4)
+static struct omap_globals omap4_globals = {
+        .class  = OMAP443X_CLASS,
+        .tap    = OMAP2_IO_ADDRESS(0x4830a000),
+        .ctrl   = OMAP2_IO_ADDRESS(OMAP443X_CTRL_BASE),
+        .prm    = OMAP2_IO_ADDRESS(OMAP4430_PRM_BASE),
+        .cm     = OMAP2_IO_ADDRESS(OMAP4430_CM_BASE),
+};
+
+void __init omap2_set_globals_443x(void)
+{
+        omap2_set_globals_tap(&omap4_globals);
+        omap2_set_globals_control(&omap4_globals);
+}
+#endif
+