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>

diff --git a/Documentation/arm/sunxi/README b/Documentation/arm/sunxi/README
new file mode 100644 (file)
index 0000000..87a1e8f
--- /dev/null
+++ b/Documentation/arm/sunxi/README
@@ -0,0 +1,19 @@
+ARM Allwinner SoCs
+==================
+
+This document lists all the ARM Allwinner SoCs that are currently
+supported in mainline by the Linux kernel. This document will also
+provide links to documentation and or datasheet for these SoCs.
+
+SunXi family
+------------
+
+  Flavors:
+        Allwinner A10 (sun4i)
+                Datasheet       : http://dl.linux-sunxi.org/A10/A10%20Datasheet%20-%20v1.21%20%282012-04-06%29.pdf
+
+        Allwinner A13 (sun5i)
+                Datasheet       : http://dl.linux-sunxi.org/A13/A13%20Datasheet%20-%20v1.12%20%282012-03-29%29.pdf
+
+  Core: Cortex A8
+  Linux kernel mach directory: arch/arm/mach-sunxi
\ No newline at end of file

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ade7e924bef5faaf00de76c0354e025ed4371b35..1abb573fef867b338daaad7bb70e24986d378d2a 100644 (file)
--- 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 5f914fca911b77b747dd43569b84a76883abcef7..363320ac9057ca42f1b6ee843b6733f1df84bcea 100644 (file)
--- 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 (file)
index 0000000..3fdd008
--- /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 (file)
index 0000000..93bebfc
--- /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 (file)
index 0000000..46d4cf0
--- /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 (file)
index 0000000..8f42df8
--- /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 (file)
index 0000000..33b5871
--- /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 */