[ARM] Kirkwood: create a mapping for the Security Accelerator SRAM

Always creating the physical mapping should do no harm, so let's remove
the interface that was provided for its optional creation and make the
mapping static.
Signed-off-by: Nicolas Pitre <nico@marvell.com>

arch/arm/include/asm/sizes.h

@@ -29,6 +29,7 @@
 #define SZ_512				0x00000200
 
 #define SZ_1K                           0x00000400
+#define SZ_2K                           0x00000800
 #define SZ_4K                           0x00001000
 #define SZ_8K                           0x00002000
 #define SZ_16K                          0x00004000

arch/arm/mach-kirkwood/addr-map.c

@@ -20,6 +20,7 @@
  */
 #define TARGET_DDR		0
 #define TARGET_DEV_BUS		1
+#define TARGET_SRAM		3
 #define TARGET_PCIE		4
 #define ATTR_DEV_SPI_ROM	0x1e
 #define ATTR_DEV_BOOT		0x1d
@@ -30,6 +31,7 @@
 #define ATTR_DEV_CS0		0x3e
 #define ATTR_PCIE_IO		0xe0
 #define ATTR_PCIE_MEM		0xe8
+#define ATTR_SRAM		0x01
 
 /*
  * Helpers to get DDR bank info
@@ -48,7 +50,6 @@
 
 
 struct mbus_dram_target_info kirkwood_mbus_dram_info;
-static int __initdata win_alloc_count;
 
 static int __init cpu_win_can_remap(int win)
 {
@@ -112,7 +113,11 @@ void __init kirkwood_setup_cpu_mbus(void)
 	setup_cpu_win(2, KIRKWOOD_NAND_MEM_PHYS_BASE, KIRKWOOD_NAND_MEM_SIZE,
 		      TARGET_DEV_BUS, ATTR_DEV_NAND, -1);
 
-	win_alloc_count = 3;
+	/*
+	 * Setup window for SRAM.
+	 */
+	setup_cpu_win(3, KIRKWOOD_SRAM_PHYS_BASE, KIRKWOOD_SRAM_SIZE,
+		      TARGET_SRAM, ATTR_SRAM, -1);
 
 	/*
 	 * Setup MBUS dram target info.
@@ -140,8 +145,3 @@ void __init kirkwood_setup_cpu_mbus(void)
 	}
 	kirkwood_mbus_dram_info.num_cs = cs;
 }
-
-void __init kirkwood_setup_sram_win(u32 base, u32 size)
-{
-	setup_cpu_win(win_alloc_count++, base, size, 0x03, 0x00, -1);
-}

arch/arm/mach-kirkwood/common.h

@@ -26,7 +26,6 @@ void kirkwood_init_irq(void);
 
 extern struct mbus_dram_target_info kirkwood_mbus_dram_info;
 void kirkwood_setup_cpu_mbus(void);
-void kirkwood_setup_sram_win(u32 base, u32 size);
 
 void kirkwood_pcie_id(u32 *dev, u32 *rev);
 

arch/arm/mach-kirkwood/include/mach/kirkwood.h

@@ -20,12 +20,16 @@
  * f1000000	on-chip peripheral registers
  * f2000000	PCIe I/O space
  * f3000000	NAND controller address window
+ * f4000000	Security Accelerator SRAM
  *
  * virt		phys		size
  * fee00000	f1000000	1M	on-chip peripheral registers
  * fef00000	f2000000	1M	PCIe I/O space
  */
 
+#define KIRKWOOD_SRAM_PHYS_BASE		0xf4000000
+#define KIRKWOOD_SRAM_SIZE		SZ_2K
+
 #define KIRKWOOD_NAND_MEM_PHYS_BASE	0xf3000000
 #define KIRKWOOD_NAND_MEM_SIZE		SZ_1K