ARM: sunxi: Add basic support for Allwinner A1x SoCs

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Stefan Roese <sr@denx.de>

7 files changed, 94 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ade7e924bef5..1abb573fef86 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1113,6 +1113,8 @@ source "arch/arm/mach-exynos/Kconfig"
 
 source "arch/arm/mach-shmobile/Kconfig"
 
+source "arch/arm/mach-sunxi/Kconfig"
+
 source "arch/arm/mach-prima2/Kconfig"
 
 source "arch/arm/mach-tegra/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 5f914fca911b..363320ac9057 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -193,6 +193,7 @@ machine-$(CONFIG_ARCH_SPEAR13XX)	+= spear13xx
 machine-$(CONFIG_ARCH_SPEAR3XX)         += spear3xx
 machine-$(CONFIG_MACH_SPEAR600)         += spear6xx
 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
+machine-$(CONFIG_ARCH_SUNXI)            += sunxi
 
 # Platform directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
new file mode 100644
index 000000000000..3fdd0085e306
--- /dev/null
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -0,0 +1,9 @@
+config ARCH_SUNXI
+        bool "Allwinner A1X SOCs" if ARCH_MULTI_V7
+        select CLKSRC_MMIO
+        select COMMON_CLK
+        select GENERIC_CLOCKEVENTS
+        select GENERIC_IRQ_CHIP
+        select PINCTRL
+        select SPARSE_IRQ
+        select SUNXI_TIMER
diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile
new file mode 100644
index 000000000000..93bebfc3ff9f
--- /dev/null
+++ b/arch/arm/mach-sunxi/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ARCH_SUNXI) += sunxi.o
diff --git a/arch/arm/mach-sunxi/Makefile.boot b/arch/arm/mach-sunxi/Makefile.boot
new file mode 100644
index 000000000000..46d4cf0841c0
--- /dev/null
+++ b/arch/arm/mach-sunxi/Makefile.boot
@@ -0,0 +1 @@
+zreladdr-$(CONFIG_ARCH_SUNXI)   += 0x40008000
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
new file mode 100644
index 000000000000..8f42df8af1da
--- /dev/null
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -0,0 +1,60 @@
+/*
+ * Device Tree support for Allwinner A1X SoCs
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/sunxi_timer.h>
+
+#include <linux/irqchip/sunxi.h>
+
+#include <asm/hardware/vic.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "sunxi.h"
+
+static struct map_desc sunxi_io_desc[] __initdata = {
+        {
+                .virtual        = (unsigned long) SUNXI_REGS_VIRT_BASE,
+                .pfn            = __phys_to_pfn(SUNXI_REGS_PHYS_BASE),
+                .length         = SUNXI_REGS_SIZE,
+                .type           = MT_DEVICE,
+        },
+};
+
+void __init sunxi_map_io(void)
+{
+        iotable_init(sunxi_io_desc, ARRAY_SIZE(sunxi_io_desc));
+}
+
+static void __init sunxi_dt_init(void)
+{
+        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char * const sunxi_board_dt_compat[] = {
+        "allwinner,sun5i",
+        NULL,
+};
+
+DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
+        .init_machine   = sunxi_dt_init,
+        .map_io         = sunxi_map_io,
+        .init_irq       = sunxi_init_irq,
+        .handle_irq     = sunxi_handle_irq,
+        .timer          = &sunxi_timer,
+        .dt_compat      = sunxi_board_dt_compat,
+MACHINE_END
diff --git a/arch/arm/mach-sunxi/sunxi.h b/arch/arm/mach-sunxi/sunxi.h
new file mode 100644
index 000000000000..33b58712adea
--- /dev/null
+++ b/arch/arm/mach-sunxi/sunxi.h
@@ -0,0 +1,20 @@
+/*
+ * Generic definitions for Allwinner SunXi SoCs
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __MACH_SUNXI_H
+#define __MACH_SUNXI_H
+
+#define SUNXI_REGS_PHYS_BASE    0x01c00000
+#define SUNXI_REGS_VIRT_BASE    IOMEM(0xf1c00000)
+#define SUNXI_REGS_SIZE         (SZ_2M + SZ_1M)
+
+#endif /* __MACH_SUNXI_H */