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, 21 insertions, 0 deletions

diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index 102c9f71a3c1..67a90708b682 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -6,6 +6,9 @@
  * Copyright (C) 2005 Nokia Corporation
  * Written 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
  * published by the Free Software Foundation.
@@ -44,6 +47,8 @@
 #define OMAP3_SRAM_VA           0xd7000000
 #define OMAP3_SRAM_PUB_PA       0x40208000
 #define OMAP3_SRAM_PUB_VA       0xd7008000
+#define OMAP4_SRAM_PA           0x40200000              /*0x402f0000*/
+#define OMAP4_SRAM_VA           0xd7000000              /*0xd70f0000*/
 
 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 #define SRAM_BOOTLOADER_SZ      0x00
@@ -87,6 +92,10 @@ static int is_sram_locked(void)
 {
         int type = 0;
 
+        if (cpu_is_omap44xx())
+                /* Not yet supported */
+                return 0;
+
         if (cpu_is_omap242x())
                 type = omap_rev() & OMAP2_DEVICETYPE_MASK;
 
@@ -135,6 +144,10 @@ void __init omap_detect_sram(void)
                                 omap_sram_base = OMAP3_SRAM_VA;
                                 omap_sram_start = OMAP3_SRAM_PA;
                                 omap_sram_size = 0x10000; /* 64K */
+                        } else if (cpu_is_omap44xx()) {
+                                omap_sram_base = OMAP4_SRAM_VA;
+                                omap_sram_start = OMAP4_SRAM_PA;
+                                omap_sram_size = 0x8000; /* 32K */
                         } else {
                                 omap_sram_base = OMAP2_SRAM_VA;
                                 omap_sram_start = OMAP2_SRAM_PA;
@@ -203,6 +216,12 @@ void __init omap_map_sram(void)
                 omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
         }
 
+        if (cpu_is_omap44xx()) {
+                omap_sram_io_desc[0].virtual = OMAP4_SRAM_VA;
+                base = OMAP4_SRAM_PA;
+                base = ROUND_DOWN(base, PAGE_SIZE);
+                omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+        }
         omap_sram_io_desc[0].length = 1024 * 1024;      /* Use section desc */
         iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
 
@@ -391,6 +410,8 @@ int __init omap_sram_init(void)
                 omap243x_sram_init();
         else if (cpu_is_omap34xx())
                 omap34xx_sram_init();
+        else if (cpu_is_omap44xx())
+                omap34xx_sram_init(); /* FIXME: */
 
         return 0;
 }