at91: introduce commom AT91_BASE_SYS

On all at91 except rm9200 and x40 have the System Controller starts
at address 0xffffc000 and has a size of 16KiB.

On rm9200 it's start at 0xfffe4000 of 111KiB with non reserved data starting
at 0xfffff000

This patch removes the individual definitions of AT91_BASE_SYS and
replaces them with a common version at base 0xfffffc000 and size 16KiB
and map the same memory space

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

1 files changed, 63 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
new file mode 100644
index 000000000000..096eb9805212
--- /dev/null
+++ b/arch/arm/mach-at91/setup.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2007 Atmel Corporation.
+ * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2
+ */
+
+#include <linux/module.h>
+#include <linux/io.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/cpu.h>
+
+#include "soc.h"
+#include "generic.h"
+
+struct at91_soc __initdata at91_boot_soc;
+
+static struct map_desc at91_io_desc __initdata = {
+	.virtual	= AT91_VA_BASE_SYS,
+	.pfn		= __phys_to_pfn(AT91_BASE_SYS),
+	.length		= SZ_16K,
+	.type		= MT_DEVICE,
+};
+
+void __init at91_map_io(void)
+{
+	/* Map peripherals */
+	iotable_init(&at91_io_desc, 1);
+
+	if (cpu_is_at91cap9())
+		at91_boot_soc = at91cap9_soc;
+	else if (cpu_is_at91rm9200())
+		at91_boot_soc = at91rm9200_soc;
+	else if (cpu_is_at91sam9260())
+		at91_boot_soc = at91sam9260_soc;
+	else if (cpu_is_at91sam9261())
+		at91_boot_soc = at91sam9261_soc;
+	else if (cpu_is_at91sam9263())
+		at91_boot_soc = at91sam9263_soc;
+	else if (cpu_is_at91sam9g10())
+		at91_boot_soc = at91sam9261_soc;
+	else if (cpu_is_at91sam9g20())
+		at91_boot_soc = at91sam9260_soc;
+	else if (cpu_is_at91sam9g45())
+		at91_boot_soc = at91sam9g45_soc;
+	else if (cpu_is_at91sam9rl())
+		at91_boot_soc = at91sam9rl_soc;
+	else if (cpu_is_at91sam9x5())
+		at91_boot_soc = at91sam9x5_soc;
+	else
+		panic("Impossible to detect the SOC type");
+
+	if (at91_boot_soc.map_io)
+		at91_boot_soc.map_io();
+}
+
+void __init at91_initialize(unsigned long main_clock)
+{
+	at91_boot_soc.init(main_clock);
+}