at91: factorize sram init

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>

arch/arm/mach-at91/at91cap9.c

@@ -29,15 +29,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91cap9_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91CAP9_SRAM_SIZE,
-		.pfn		= __phys_to_pfn(AT91CAP9_SRAM_BASE),
-		.length		= AT91CAP9_SRAM_SIZE,
-		.type		= MT_DEVICE,
-	},
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -337,7 +328,7 @@ static void at91cap9_poweroff(void)
 
 static void __init at91cap9_map_io(void)
 {
-	iotable_init(at91cap9_sram_desc, ARRAY_SIZE(at91cap9_sram_desc));
+	at91_init_sram(0, AT91CAP9_SRAM_BASE, AT91CAP9_SRAM_SIZE);
 }
 
 static void __init at91cap9_initialize(void)

arch/arm/mach-at91/at91rm9200.c

@@ -30,11 +30,6 @@ static struct map_desc at91rm9200_io_desc[] __initdata = {
 		.pfn		= __phys_to_pfn(AT91RM9200_BASE_EMAC),
 		.length		= SZ_16K,
 		.type		= MT_DEVICE,
-	}, {
-		.virtual	= AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
-		.pfn		= __phys_to_pfn(AT91RM9200_SRAM_BASE),
-		.length		= AT91RM9200_SRAM_SIZE,
-		.type		= MT_DEVICE,
 	},
 };
 
@@ -306,6 +301,7 @@ static void at91rm9200_reset(void)
 static void __init at91rm9200_map_io(void)
 {
 	/* Map peripherals */
+	at91_init_sram(0, AT91RM9200_SRAM_BASE, AT91RM9200_SRAM_SIZE);
 	iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
 }
 

arch/arm/mach-at91/at91sam9260.c

@@ -27,41 +27,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91sam9260_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9260_SRAM0_BASE),
-		.length		= AT91SAM9260_SRAM0_SIZE,
-		.type		= MT_DEVICE,
-	}, {
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9260_SRAM0_SIZE - AT91SAM9260_SRAM1_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9260_SRAM1_BASE),
-		.length		= AT91SAM9260_SRAM1_SIZE,
-		.type		= MT_DEVICE,
-	}
-};
-
-static struct map_desc at91sam9g20_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9G20_SRAM0_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9G20_SRAM0_BASE),
-		.length		= AT91SAM9G20_SRAM0_SIZE,
-		.type		= MT_DEVICE,
-	}, {
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9G20_SRAM0_SIZE - AT91SAM9G20_SRAM1_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9G20_SRAM1_BASE),
-		.length		= AT91SAM9G20_SRAM1_SIZE,
-		.type		= MT_DEVICE,
-	}
-};
-
-static struct map_desc at91sam9xe_sram_desc[] __initdata = {
-	{
-		.pfn		= __phys_to_pfn(AT91SAM9XE_SRAM_BASE),
-		.type		= MT_DEVICE,
-	}
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -334,20 +299,20 @@ static void __init at91sam9xe_map_io(void)
 			sram_size = SZ_16K;
 	}
 
-	at91sam9xe_sram_desc->virtual = AT91_IO_VIRT_BASE - sram_size;
-	at91sam9xe_sram_desc->length = sram_size;
-
-	iotable_init(at91sam9xe_sram_desc, ARRAY_SIZE(at91sam9xe_sram_desc));
+	at91_init_sram(0, AT91SAM9XE_SRAM_BASE, sram_size);
 }
 
 static void __init at91sam9260_map_io(void)
 {
-	if (cpu_is_at91sam9xe())
+	if (cpu_is_at91sam9xe()) {
 		at91sam9xe_map_io();
-	else if (cpu_is_at91sam9g20())
-		iotable_init(at91sam9g20_sram_desc, ARRAY_SIZE(at91sam9g20_sram_desc));
-	else
-		iotable_init(at91sam9260_sram_desc, ARRAY_SIZE(at91sam9260_sram_desc));
+	} else if (cpu_is_at91sam9g20()) {
+		at91_init_sram(0, AT91SAM9G20_SRAM0_BASE, AT91SAM9G20_SRAM0_SIZE);
+		at91_init_sram(1, AT91SAM9G20_SRAM1_BASE, AT91SAM9G20_SRAM1_SIZE);
+	} else {
+		at91_init_sram(0, AT91SAM9260_SRAM0_BASE, AT91SAM9260_SRAM0_SIZE);
+		at91_init_sram(1, AT91SAM9260_SRAM1_BASE, AT91SAM9260_SRAM1_SIZE);
+	}
 }
 
 static void __init at91sam9260_initialize(void)

arch/arm/mach-at91/at91sam9261.c

@@ -26,24 +26,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91sam9261_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9261_SRAM_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9261_SRAM_BASE),
-		.length		= AT91SAM9261_SRAM_SIZE,
-		.type		= MT_DEVICE,
-	},
-};
-
-static struct map_desc at91sam9g10_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9G10_SRAM_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9G10_SRAM_BASE),
-		.length		= AT91SAM9G10_SRAM_SIZE,
-		.type		= MT_DEVICE,
-	},
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -297,9 +279,9 @@ static void at91sam9261_poweroff(void)
 static void __init at91sam9261_map_io(void)
 {
 	if (cpu_is_at91sam9g10())
-		iotable_init(at91sam9g10_sram_desc, ARRAY_SIZE(at91sam9g10_sram_desc));
+		at91_init_sram(0, AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE);
 	else
-		iotable_init(at91sam9261_sram_desc, ARRAY_SIZE(at91sam9261_sram_desc));
+		at91_init_sram(0, AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE);
 }
 
 static void __init at91sam9261_initialize(void)

arch/arm/mach-at91/at91sam9263.c

@@ -25,20 +25,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91sam9263_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
-		.length		= AT91SAM9263_SRAM0_SIZE,
-		.type		= MT_DEVICE,
-	}, {
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
-		.length		= AT91SAM9263_SRAM1_SIZE,
-		.type		= MT_DEVICE,
-	},
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -311,7 +297,8 @@ static void at91sam9263_poweroff(void)
 
 static void __init at91sam9263_map_io(void)
 {
-	iotable_init(at91sam9263_sram_desc, ARRAY_SIZE(at91sam9263_sram_desc));
+	at91_init_sram(0, AT91SAM9263_SRAM0_BASE, AT91SAM9263_SRAM0_SIZE);
+	at91_init_sram(1, AT91SAM9263_SRAM1_BASE, AT91SAM9263_SRAM1_SIZE);
 }
 
 static void __init at91sam9263_initialize(void)

arch/arm/mach-at91/at91sam9g45.c

@@ -26,15 +26,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91sam9g45_sram_desc[] __initdata = {
-	{
-		.virtual	= AT91_IO_VIRT_BASE - AT91SAM9G45_SRAM_SIZE,
-		.pfn		= __phys_to_pfn(AT91SAM9G45_SRAM_BASE),
-		.length		= AT91SAM9G45_SRAM_SIZE,
-		.type		= MT_DEVICE,
-	}
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -327,7 +318,7 @@ static void at91sam9g45_poweroff(void)
 
 static void __init at91sam9g45_map_io(void)
 {
-	iotable_init(at91sam9g45_sram_desc, ARRAY_SIZE(at91sam9g45_sram_desc));
+	at91_init_sram(0, AT91SAM9G45_SRAM_BASE, AT91SAM9G45_SRAM_SIZE);
 }
 
 static void __init at91sam9g45_initialize(void)

arch/arm/mach-at91/at91sam9rl.c

@@ -26,13 +26,6 @@
 #include "generic.h"
 #include "clock.h"
 
-static struct map_desc at91sam9rl_sram_desc[] __initdata = {
-	{
-		.pfn		= __phys_to_pfn(AT91SAM9RL_SRAM_BASE),
-		.type		= MT_DEVICE,
-	}
-};
-
 /* --------------------------------------------------------------------
  *  Clocks
  * -------------------------------------------------------------------- */
@@ -293,11 +286,8 @@ static void __init at91sam9rl_map_io(void)
 			sram_size = SZ_16K;
 	}
 
-	at91sam9rl_sram_desc->virtual = AT91_IO_VIRT_BASE - sram_size;
-	at91sam9rl_sram_desc->length = sram_size;
-
 	/* Map SRAM */
-	iotable_init(at91sam9rl_sram_desc, ARRAY_SIZE(at91sam9rl_sram_desc));
+	at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size);
 }
 
 static void __init at91sam9rl_initialize(void)

arch/arm/mach-at91/generic.h

@@ -12,6 +12,8 @@
 
  /* Map io */
 extern void __init at91_map_io(void);
+extern void __init at91_init_sram(int bank, unsigned long base,
+				  unsigned int length);
 
  /* Processors */
 extern void __init at91rm9200_set_type(int type);

arch/arm/mach-at91/setup.c

@@ -45,6 +45,26 @@ void __init at91_init_interrupts(unsigned int *priority)
 	at91_gpio_irq_setup();
 }
 
+static struct map_desc sram_desc[2] __initdata;
+
+void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
+{
+	struct map_desc *desc = &sram_desc[bank];
+
+	desc->virtual = AT91_IO_VIRT_BASE - length;
+	if (bank > 0)
+		desc->virtual -= sram_desc[bank - 1].length;
+
+	desc->pfn = __phys_to_pfn(base);
+	desc->length = length;
+	desc->type = MT_DEVICE;
+
+	pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
+		base, length, desc->virtual);
+
+	iotable_init(desc, 1);
+}
+
 static struct map_desc at91_io_desc __initdata = {
 	.virtual	= AT91_VA_BASE_SYS,
 	.pfn		= __phys_to_pfn(AT91_BASE_SYS),