summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500/cpu-u8500.c
diff options
context:
space:
mode:
authorSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>2009-11-28 08:17:18 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-11-28 10:22:52 +0000
commitaa44ef4d43b200c0e318ade2a3c24d00a6fd942a (patch)
tree259b92c5ac721b0d5aa24186fcde9a22572c6a3c /arch/arm/mach-ux500/cpu-u8500.c
parentc6b503caef9abefb2e90ac83f672b75dc14bacd0 (diff)
ARM: 5831/1: ARM: U8500 core machine support
Adds core support for the ST-Ericsson U8500 platform. It supports memory mappings, binds to the existing modules like GIC, SCU, TWD and local timers and sets up the infrastructure for the secondary core. Reviewed-by: Alessandro Rubini <rubini@unipv.it> Reviewed-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ux500/cpu-u8500.c')
-rw-r--r--arch/arm/mach-ux500/cpu-u8500.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpu-u8500.c b/arch/arm/mach-ux500/cpu-u8500.c
new file mode 100644
index 00000000000..5f05e5850f7
--- /dev/null
+++ b/arch/arm/mach-ux500/cpu-u8500.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2008-2009 ST-Ericsson
+ *
+ * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.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.
+ *
+ */
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+
+#include <asm/hardware/gic.h>
+#include <asm/mach/map.h>
+#include <mach/hardware.h>
+
+/* add any platform devices here - TODO */
+static struct platform_device *platform_devs[] __initdata = {
+ /* yet to be added, add i2c0, gpio.. */
+};
+
+#define __IO_DEV_DESC(x, sz) { \
+ .virtual = IO_ADDRESS(x), \
+ .pfn = __phys_to_pfn(x), \
+ .length = sz, \
+ .type = MT_DEVICE, \
+}
+
+/* minimum static i/o mapping required to boot U8500 platforms */
+static struct map_desc u8500_io_desc[] __initdata = {
+ __IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_TWD_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
+ __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
+};
+
+void __init u8500_map_io(void)
+{
+ iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
+}
+
+void __init u8500_init_irq(void)
+{
+ gic_dist_init(0, __io_address(U8500_GIC_DIST_BASE), 29);
+ gic_cpu_init(0, __io_address(U8500_GIC_CPU_BASE));
+}
+
+/*
+ * This function is called from the board init
+ */
+void __init u8500_init_devices(void)
+{
+ /* Register the platform devices */
+ platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
+
+ return ;
+}