Merge branches 'master' and 'devel' into for-linus

Conflicts:
	arch/arm/Kconfig
	arch/arm/mm/Kconfig

32 files changed, 2457 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv310/Kconfig b/arch/arm/mach-s5pv310/Kconfig
new file mode 100644
index 000000000000..331b5bd97aba
--- /dev/null
+++ b/arch/arm/mach-s5pv310/Kconfig
@@ -0,0 +1,45 @@
+# arch/arm/mach-s5pv310/Kconfig
+#
+# Copyright (c) 2010 Samsung Electronics Co., Ltd.
+#               http://www.samsung.com/
+#
+# Licensed under GPLv2
+
+# Configuration options for the S5PV310
+
+if ARCH_S5PV310
+
+config CPU_S5PV310
+        bool
+        select PLAT_S5P
+        help
+          Enable S5PV310 CPU support
+
+config S5PV310_SETUP_I2C1
+        bool
+        help
+          Common setup code for i2c bus 1.
+
+config S5PV310_SETUP_I2C2
+        bool
+        help
+          Common setup code for i2c bus 2.
+
+# machine support
+
+config MACH_SMDKV310
+        bool "SMDKV310"
+        select CPU_S5PV310
+        select ARCH_SPARSEMEM_ENABLE
+        help
+          Machine support for Samsung SMDKV310
+
+config MACH_UNIVERSAL_C210
+        bool "Mobile UNIVERSAL_C210 Board"
+        select CPU_S5PV310
+        select ARCH_SPARSEMEM_ENABLE
+        help
+          Machine support for Samsung Mobile Universal S5PC210 Reference
+          Board. S5PC210(MCP) is one of package option of S5PV310
+
+endif
diff --git a/arch/arm/mach-s5pv310/Makefile b/arch/arm/mach-s5pv310/Makefile
new file mode 100644
index 000000000000..d5b51c72340f
--- /dev/null
+++ b/arch/arm/mach-s5pv310/Makefile
@@ -0,0 +1,30 @@
+# arch/arm/mach-s5pv310/Makefile
+#
+# Copyright (c) 2010 Samsung Electronics Co., Ltd.
+#               http://www.samsung.com/
+#
+# Licensed under GPLv2
+
+obj-y                           :=
+obj-m                           :=
+obj-n                           :=
+obj-                            :=
+
+# Core support for S5PV310 system
+
+obj-$(CONFIG_CPU_S5PV310)       += cpu.o init.o clock.o irq-combiner.o
+obj-$(CONFIG_CPU_S5PV310)       += setup-i2c0.o time.o
+
+obj-$(CONFIG_SMP)               += platsmp.o headsmp.o
+obj-$(CONFIG_LOCAL_TIMERS)      += localtimer.o
+obj-$(CONFIG_HOTPLUG_CPU)       += hotplug.o
+
+# machine support
+
+obj-$(CONFIG_MACH_SMDKV310)     += mach-smdkv310.o
+obj-$(CONFIG_MACH_UNIVERSAL_C210)       += mach-universal_c210.o
+
+# device support
+
+obj-$(CONFIG_S5PV310_SETUP_I2C1)        += setup-i2c1.o
+obj-$(CONFIG_S5PV310_SETUP_I2C2)        += setup-i2c2.o
diff --git a/arch/arm/mach-s5pv310/Makefile.boot b/arch/arm/mach-s5pv310/Makefile.boot
new file mode 100644
index 000000000000..d65956ffb43d
--- /dev/null
+++ b/arch/arm/mach-s5pv310/Makefile.boot
@@ -0,0 +1,2 @@
+   zreladdr-y   := 0x40008000
+params_phys-y   := 0x40000100
diff --git a/arch/arm/mach-s5pv310/clock.c b/arch/arm/mach-s5pv310/clock.c
new file mode 100644
index 000000000000..77f2b4d85e6b
--- /dev/null
+++ b/arch/arm/mach-s5pv310/clock.c
@@ -0,0 +1,544 @@
+/* linux/arch/arm/mach-s5pv310/clock.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - Clock support
+ *
+ * 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/kernel.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <plat/cpu-freq.h>
+#include <plat/clock.h>
+#include <plat/cpu.h>
+#include <plat/pll.h>
+#include <plat/s5p-clock.h>
+#include <plat/clock-clksrc.h>
+
+#include <mach/map.h>
+#include <mach/regs-clock.h>
+
+static struct clk clk_sclk_hdmi27m = {
+        .name           = "sclk_hdmi27m",
+        .id             = -1,
+        .rate           = 27000000,
+};
+
+/* Core list of CMU_CPU side */
+
+static struct clksrc_clk clk_mout_apll = {
+        .clk    = {
+                .name           = "mout_apll",
+                .id             = -1,
+        },
+        .sources        = &clk_src_apll,
+        .reg_src        = { .reg = S5P_CLKSRC_CPU, .shift = 0, .size = 1 },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 24, .size = 3 },
+};
+
+static struct clksrc_clk clk_mout_epll = {
+        .clk    = {
+                .name           = "mout_epll",
+                .id             = -1,
+        },
+        .sources        = &clk_src_epll,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 4, .size = 1 },
+};
+
+static struct clksrc_clk clk_mout_mpll = {
+        .clk = {
+                .name           = "mout_mpll",
+                .id             = -1,
+        },
+        .sources        = &clk_src_mpll,
+        .reg_src        = { .reg = S5P_CLKSRC_CPU, .shift = 8, .size = 1 },
+};
+
+static struct clk *clkset_moutcore_list[] = {
+        [0] = &clk_mout_apll.clk,
+        [1] = &clk_mout_mpll.clk,
+};
+
+static struct clksrc_sources clkset_moutcore = {
+        .sources        = clkset_moutcore_list,
+        .nr_sources     = ARRAY_SIZE(clkset_moutcore_list),
+};
+
+static struct clksrc_clk clk_moutcore = {
+        .clk    = {
+                .name           = "moutcore",
+                .id             = -1,
+        },
+        .sources        = &clkset_moutcore,
+        .reg_src        = { .reg = S5P_CLKSRC_CPU, .shift = 16, .size = 1 },
+};
+
+static struct clksrc_clk clk_coreclk = {
+        .clk    = {
+                .name           = "core_clk",
+                .id             = -1,
+                .parent         = &clk_moutcore.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 0, .size = 3 },
+};
+
+static struct clksrc_clk clk_armclk = {
+        .clk    = {
+                .name           = "armclk",
+                .id             = -1,
+                .parent         = &clk_coreclk.clk,
+        },
+};
+
+static struct clksrc_clk clk_aclk_corem0 = {
+        .clk    = {
+                .name           = "aclk_corem0",
+                .id             = -1,
+                .parent         = &clk_coreclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 },
+};
+
+static struct clksrc_clk clk_aclk_cores = {
+        .clk    = {
+                .name           = "aclk_cores",
+                .id             = -1,
+                .parent         = &clk_coreclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 4, .size = 3 },
+};
+
+static struct clksrc_clk clk_aclk_corem1 = {
+        .clk    = {
+                .name           = "aclk_corem1",
+                .id             = -1,
+                .parent         = &clk_coreclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 8, .size = 3 },
+};
+
+static struct clksrc_clk clk_periphclk = {
+        .clk    = {
+                .name           = "periphclk",
+                .id             = -1,
+                .parent         = &clk_coreclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 12, .size = 3 },
+};
+
+static struct clksrc_clk clk_atclk = {
+        .clk    = {
+                .name           = "atclk",
+                .id             = -1,
+                .parent         = &clk_moutcore.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 16, .size = 3 },
+};
+
+static struct clksrc_clk clk_pclk_dbg = {
+        .clk    = {
+                .name           = "pclk_dbg",
+                .id             = -1,
+                .parent         = &clk_atclk.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CPU, .shift = 20, .size = 3 },
+};
+
+/* Core list of CMU_CORE side */
+
+static struct clk *clkset_corebus_list[] = {
+        [0] = &clk_mout_mpll.clk,
+        [1] = &clk_mout_apll.clk,
+};
+
+static struct clksrc_sources clkset_mout_corebus = {
+        .sources        = clkset_corebus_list,
+        .nr_sources     = ARRAY_SIZE(clkset_corebus_list),
+};
+
+static struct clksrc_clk clk_mout_corebus = {
+        .clk    = {
+                .name           = "mout_corebus",
+                .id             = -1,
+        },
+        .sources        = &clkset_mout_corebus,
+        .reg_src        = { .reg = S5P_CLKSRC_CORE, .shift = 4, .size = 1 },
+};
+
+static struct clksrc_clk clk_sclk_dmc = {
+        .clk    = {
+                .name           = "sclk_dmc",
+                .id             = -1,
+                .parent         = &clk_mout_corebus.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CORE0, .shift = 12, .size = 3 },
+};
+
+static struct clksrc_clk clk_aclk_cored = {
+        .clk    = {
+                .name           = "aclk_cored",
+                .id             = -1,
+                .parent         = &clk_sclk_dmc.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CORE0, .shift = 16, .size = 3 },
+};
+
+static struct clksrc_clk clk_aclk_corep = {
+        .clk    = {
+                .name           = "aclk_corep",
+                .id             = -1,
+                .parent         = &clk_aclk_cored.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CORE0, .shift = 20, .size = 3 },
+};
+
+static struct clksrc_clk clk_aclk_acp = {
+        .clk    = {
+                .name           = "aclk_acp",
+                .id             = -1,
+                .parent         = &clk_mout_corebus.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CORE0, .shift = 0, .size = 3 },
+};
+
+static struct clksrc_clk clk_pclk_acp = {
+        .clk    = {
+                .name           = "pclk_acp",
+                .id             = -1,
+                .parent         = &clk_aclk_acp.clk,
+        },
+        .reg_div        = { .reg = S5P_CLKDIV_CORE0, .shift = 4, .size = 3 },
+};
+
+/* Core list of CMU_TOP side */
+
+static struct clk *clkset_aclk_top_list[] = {
+        [0] = &clk_mout_mpll.clk,
+        [1] = &clk_mout_apll.clk,
+};
+
+static struct clksrc_sources clkset_aclk_200 = {
+        .sources        = clkset_aclk_top_list,
+        .nr_sources     = ARRAY_SIZE(clkset_aclk_top_list),
+};
+
+static struct clksrc_clk clk_aclk_200 = {
+        .clk    = {
+                .name           = "aclk_200",
+                .id             = -1,
+        },
+        .sources        = &clkset_aclk_200,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 12, .size = 1 },
+        .reg_div        = { .reg = S5P_CLKDIV_TOP, .shift = 0, .size = 3 },
+};
+
+static struct clksrc_sources clkset_aclk_100 = {
+        .sources        = clkset_aclk_top_list,
+        .nr_sources     = ARRAY_SIZE(clkset_aclk_top_list),
+};
+
+static struct clksrc_clk clk_aclk_100 = {
+        .clk    = {
+                .name           = "aclk_100",
+                .id             = -1,
+        },
+        .sources        = &clkset_aclk_100,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 16, .size = 1 },
+        .reg_div        = { .reg = S5P_CLKDIV_TOP, .shift = 4, .size = 4 },
+};
+
+static struct clksrc_sources clkset_aclk_160 = {
+        .sources        = clkset_aclk_top_list,
+        .nr_sources     = ARRAY_SIZE(clkset_aclk_top_list),
+};
+
+static struct clksrc_clk clk_aclk_160 = {
+        .clk    = {
+                .name           = "aclk_160",
+                .id             = -1,
+        },
+        .sources        = &clkset_aclk_160,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 20, .size = 1 },
+        .reg_div        = { .reg = S5P_CLKDIV_TOP, .shift = 8, .size = 3 },
+};
+
+static struct clksrc_sources clkset_aclk_133 = {
+        .sources        = clkset_aclk_top_list,
+        .nr_sources     = ARRAY_SIZE(clkset_aclk_top_list),
+};
+
+static struct clksrc_clk clk_aclk_133 = {
+        .clk    = {
+                .name           = "aclk_133",
+                .id             = -1,
+        },
+        .sources        = &clkset_aclk_133,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 24, .size = 1 },
+        .reg_div        = { .reg = S5P_CLKDIV_TOP, .shift = 12, .size = 3 },
+};
+
+static struct clk *clkset_vpllsrc_list[] = {
+        [0] = &clk_fin_vpll,
+        [1] = &clk_sclk_hdmi27m,
+};
+
+static struct clksrc_sources clkset_vpllsrc = {
+        .sources        = clkset_vpllsrc_list,
+        .nr_sources     = ARRAY_SIZE(clkset_vpllsrc_list),
+};
+
+static struct clksrc_clk clk_vpllsrc = {
+        .clk    = {
+                .name           = "vpll_src",
+                .id             = -1,
+        },
+        .sources        = &clkset_vpllsrc,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP1, .shift = 0, .size = 1 },
+};
+
+static struct clk *clkset_sclk_vpll_list[] = {
+        [0] = &clk_vpllsrc.clk,
+        [1] = &clk_fout_vpll,
+};
+
+static struct clksrc_sources clkset_sclk_vpll = {
+        .sources        = clkset_sclk_vpll_list,
+        .nr_sources     = ARRAY_SIZE(clkset_sclk_vpll_list),
+};
+
+static struct clksrc_clk clk_sclk_vpll = {
+        .clk    = {
+                .name           = "sclk_vpll",
+                .id             = -1,
+        },
+        .sources        = &clkset_sclk_vpll,
+        .reg_src        = { .reg = S5P_CLKSRC_TOP0, .shift = 8, .size = 1 },
+};
+
+static int s5pv310_clk_ip_peril_ctrl(struct clk *clk, int enable)
+{
+        return s5p_gatectrl(S5P_CLKGATE_IP_PERIL, clk, enable);
+}
+
+static struct clk init_clocks_disable[] = {
+        {
+                .name           = "timers",
+                .id             = -1,
+                .parent         = &clk_aclk_100.clk,
+                .enable         = s5pv310_clk_ip_peril_ctrl,
+                .ctrlbit        = (1<<24),
+        }
+};
+
+static struct clk init_clocks[] = {
+        /* Nothing here yet */
+};
+
+static struct clk *clkset_group_list[] = {
+        [0] = &clk_ext_xtal_mux,
+        [1] = &clk_xusbxti,
+        [2] = &clk_sclk_hdmi27m,
+        [6] = &clk_mout_mpll.clk,
+        [7] = &clk_mout_epll.clk,
+        [8] = &clk_sclk_vpll.clk,
+};
+
+static struct clksrc_sources clkset_group = {
+        .sources        = clkset_group_list,
+        .nr_sources     = ARRAY_SIZE(clkset_group_list),
+};
+
+static struct clksrc_clk clksrcs[] = {
+        {
+                .clk    = {
+                        .name           = "uclk1",
+                        .id             = 0,
+                        .ctrlbit        = (1 << 0),
+                        .enable         = s5pv310_clk_ip_peril_ctrl,
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 0, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 0, .size = 4 },
+        }, {
+                .clk            = {
+                        .name           = "uclk1",
+                        .id             = 1,
+                        .enable         = s5pv310_clk_ip_peril_ctrl,
+                        .ctrlbit        = (1 << 1),
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 4, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 4, .size = 4 },
+        }, {
+                .clk            = {
+                        .name           = "uclk1",
+                        .id             = 2,
+                        .enable         = s5pv310_clk_ip_peril_ctrl,
+                        .ctrlbit        = (1 << 2),
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 8, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 8, .size = 4 },
+        }, {
+                .clk            = {
+                        .name           = "uclk1",
+                        .id             = 3,
+                        .enable         = s5pv310_clk_ip_peril_ctrl,
+                        .ctrlbit        = (1 << 3),
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 12, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 12, .size = 4 },
+        }, {
+                .clk            = {
+                        .name           = "sclk_pwm",
+                        .id             = -1,
+                        .enable         = s5pv310_clk_ip_peril_ctrl,
+                        .ctrlbit        = (1 << 24),
+                },
+                .sources = &clkset_group,
+                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 24, .size = 4 },
+                .reg_div = { .reg = S5P_CLKDIV_PERIL3, .shift = 0, .size = 4 },
+        },
+};
+
+/* Clock initialization code */
+static struct clksrc_clk *sysclks[] = {
+        &clk_mout_apll,
+        &clk_mout_epll,
+        &clk_mout_mpll,
+        &clk_moutcore,
+        &clk_coreclk,
+        &clk_armclk,
+        &clk_aclk_corem0,
+        &clk_aclk_cores,
+        &clk_aclk_corem1,
+        &clk_periphclk,
+        &clk_atclk,
+        &clk_pclk_dbg,
+        &clk_mout_corebus,
+        &clk_sclk_dmc,
+        &clk_aclk_cored,
+        &clk_aclk_corep,
+        &clk_aclk_acp,
+        &clk_pclk_acp,
+        &clk_vpllsrc,
+        &clk_sclk_vpll,
+        &clk_aclk_200,
+        &clk_aclk_100,
+        &clk_aclk_160,
+        &clk_aclk_133,
+};
+
+void __init_or_cpufreq s5pv310_setup_clocks(void)
+{
+        struct clk *xtal_clk;
+        unsigned long apll;
+        unsigned long mpll;
+        unsigned long epll;
+        unsigned long vpll;
+        unsigned long vpllsrc;
+        unsigned long xtal;
+        unsigned long armclk;
+        unsigned long aclk_corem0;
+        unsigned long aclk_cores;
+        unsigned long aclk_corem1;
+        unsigned long periphclk;
+        unsigned long sclk_dmc;
+        unsigned long aclk_cored;
+        unsigned long aclk_corep;
+        unsigned long aclk_acp;
+        unsigned long pclk_acp;
+        unsigned int ptr;
+
+        printk(KERN_DEBUG "%s: registering clocks\n", __func__);
+
+        xtal_clk = clk_get(NULL, "xtal");
+        BUG_ON(IS_ERR(xtal_clk));
+
+        xtal = clk_get_rate(xtal_clk);
+        clk_put(xtal_clk);
+
+        printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal);
+
+        apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON0), pll_4508);
+        mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON0), pll_4508);
+        epll = s5p_get_pll46xx(xtal, __raw_readl(S5P_EPLL_CON0),
+                                __raw_readl(S5P_EPLL_CON1), pll_4500);
+
+        vpllsrc = clk_get_rate(&clk_vpllsrc.clk);
+        vpll = s5p_get_pll46xx(vpllsrc, __raw_readl(S5P_VPLL_CON0),
+                                __raw_readl(S5P_VPLL_CON1), pll_4502);
+
+        clk_fout_apll.rate = apll;
+        clk_fout_mpll.rate = mpll;
+        clk_fout_epll.rate = epll;
+        clk_fout_vpll.rate = vpll;
+
+        printk(KERN_INFO "S5PV310: PLL settings, A=%ld, M=%ld, E=%ld V=%ld",
+                        apll, mpll, epll, vpll);
+
+        armclk = clk_get_rate(&clk_armclk.clk);
+        aclk_corem0 = clk_get_rate(&clk_aclk_corem0.clk);
+        aclk_cores = clk_get_rate(&clk_aclk_cores.clk);
+        aclk_corem1 = clk_get_rate(&clk_aclk_corem1.clk);
+        periphclk = clk_get_rate(&clk_periphclk.clk);
+        sclk_dmc = clk_get_rate(&clk_sclk_dmc.clk);
+        aclk_cored = clk_get_rate(&clk_aclk_cored.clk);
+        aclk_corep = clk_get_rate(&clk_aclk_corep.clk);
+        aclk_acp = clk_get_rate(&clk_aclk_acp.clk);
+        pclk_acp = clk_get_rate(&clk_pclk_acp.clk);
+
+        printk(KERN_INFO "S5PV310: ARMCLK=%ld, COREM0=%ld, CORES=%ld\n"
+                         "COREM1=%ld, PERI=%ld, DMC=%ld, CORED=%ld\n"
+                         "COREP=%ld, ACLK_ACP=%ld, PCLK_ACP=%ld",
+                        armclk, aclk_corem0, aclk_cores, aclk_corem1,
+                        periphclk, sclk_dmc, aclk_cored, aclk_corep,
+                        aclk_acp, pclk_acp);
+
+        clk_f.rate = armclk;
+        clk_h.rate = sclk_dmc;
+        clk_p.rate = periphclk;
+
+        for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
+                s3c_set_clksrc(&clksrcs[ptr], true);
+}
+
+static struct clk *clks[] __initdata = {
+        /* Nothing here yet */
+};
+
+void __init s5pv310_register_clocks(void)
+{
+        struct clk *clkp;
+        int ret;
+        int ptr;
+
+        ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));
+        if (ret > 0)
+                printk(KERN_ERR "Failed to register %u clocks\n", ret);
+
+        for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++)
+                s3c_register_clksrc(sysclks[ptr], 1);
+
+        s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
+        s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
+
+        clkp = init_clocks_disable;
+        for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
+                ret = s3c24xx_register_clock(clkp);
+                if (ret < 0) {
+                        printk(KERN_ERR "Failed to register clock %s (%d)\n",
+                               clkp->name, ret);
+                }
+                (clkp->enable)(clkp, 0);
+        }
+
+        s3c_pwmclk_init();
+}
diff --git a/arch/arm/mach-s5pv310/cpu.c b/arch/arm/mach-s5pv310/cpu.c
new file mode 100644
index 000000000000..196c9f12ed85
--- /dev/null
+++ b/arch/arm/mach-s5pv310/cpu.c
@@ -0,0 +1,122 @@
+/* linux/arch/arm/mach-s5pv310/cpu.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.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/sched.h>
+#include <linux/sysdev.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/proc-fns.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+#include <plat/s5pv310.h>
+
+#include <mach/regs-irq.h>
+
+void __iomem *gic_cpu_base_addr;
+
+extern int combiner_init(unsigned int combiner_nr, void __iomem *base,
+                         unsigned int irq_start);
+extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq);
+
+/* Initial IO mappings */
+static struct map_desc s5pv310_iodesc[] __initdata = {
+        {
+                .virtual        = (unsigned long)S5P_VA_COREPERI_BASE,
+                .pfn            = __phys_to_pfn(S5PV310_PA_COREPERI),
+                .length         = SZ_8K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S5P_VA_COMBINER_BASE,
+                .pfn            = __phys_to_pfn(S5PV310_PA_COMBINER),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)S5P_VA_L2CC,
+                .pfn            = __phys_to_pfn(S5PV310_PA_L2CC),
+                .length         = SZ_4K,
+                .type           = MT_DEVICE,
+        },
+};
+
+static void s5pv310_idle(void)
+{
+        if (!need_resched())
+                cpu_do_idle();
+
+        local_irq_enable();
+}
+
+/* s5pv310_map_io
+ *
+ * register the standard cpu IO areas
+*/
+void __init s5pv310_map_io(void)
+{
+        iotable_init(s5pv310_iodesc, ARRAY_SIZE(s5pv310_iodesc));
+}
+
+void __init s5pv310_init_clocks(int xtal)
+{
+        printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+        s3c24xx_register_baseclocks(xtal);
+        s5p_register_clocks(xtal);
+        s5pv310_register_clocks();
+        s5pv310_setup_clocks();
+}
+
+void __init s5pv310_init_irq(void)
+{
+        int irq;
+
+        gic_cpu_base_addr = S5P_VA_GIC_CPU;
+        gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER);
+        gic_cpu_init(0, S5P_VA_GIC_CPU);
+
+        for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
+                combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
+                                COMBINER_IRQ(irq, 0));
+                combiner_cascade_irq(irq, IRQ_SPI(irq));
+        }
+
+        /* The parameters of s5p_init_irq() are for VIC init.
+         * Theses parameters should be NULL and 0 because S5PV310
+         * uses GIC instead of VIC.
+         */
+        s5p_init_irq(NULL, 0);
+}
+
+struct sysdev_class s5pv310_sysclass = {
+        .name   = "s5pv310-core",
+};
+
+static struct sys_device s5pv310_sysdev = {
+        .cls    = &s5pv310_sysclass,
+};
+
+static int __init s5pv310_core_init(void)
+{
+        return sysdev_class_register(&s5pv310_sysclass);
+}
+
+core_initcall(s5pv310_core_init);
+
+int __init s5pv310_init(void)
+{
+        printk(KERN_INFO "S5PV310: Initializing architecture\n");
+
+        /* set idle function */
+        pm_idle = s5pv310_idle;
+
+        return sysdev_register(&s5pv310_sysdev);
+}
diff --git a/arch/arm/mach-s5pv310/headsmp.S b/arch/arm/mach-s5pv310/headsmp.S
new file mode 100644
index 000000000000..164b7b045713
--- /dev/null
+++ b/arch/arm/mach-s5pv310/headsmp.S
@@ -0,0 +1,41 @@
+/*
+ *  linux/arch/arm/mach-s5pv310/headsmp.S
+ *
+ *  Cloned from linux/arch/arm/mach-realview/headsmp.S
+ *
+ *  Copyright (c) 2003 ARM Limited
+ *  All Rights Reserved
+ *
+ * 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/linkage.h>
+#include <linux/init.h>
+
+        __INIT
+
+/*
+ * s5pv310 specific entry point for secondary CPUs.  This provides
+ * a "holding pen" into which all secondary cores are held until we're
+ * ready for them to initialise.
+ */
+ENTRY(s5pv310_secondary_startup)
+        mrc     p15, 0, r0, c0, c0, 5
+        and     r0, r0, #15
+        adr     r4, 1f
+        ldmia   r4, {r5, r6}
+        sub     r4, r4, r5
+        add     r6, r6, r4
+pen:    ldr     r7, [r6]
+        cmp     r7, r0
+        bne     pen
+
+        /*
+         * we've been released from the holding pen: secondary_stack
+         * should now contain the SVC stack for this core
+         */
+        b       secondary_startup
+
+1:      .long   .
+        .long   pen_release
diff --git a/arch/arm/mach-s5pv310/include/mach/debug-macro.S b/arch/arm/mach-s5pv310/include/mach/debug-macro.S
new file mode 100644
index 000000000000..6fb3893486be
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/debug-macro.S
@@ -0,0 +1,36 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/debug-macro.S
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Based on arch/arm/mach-s3c6400/include/mach/debug-macro.S
+ *
+ * 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.
+*/
+
+/* pull in the relevant register and map files. */
+
+#include <mach/map.h>
+
+        /* note, for the boot process to work we have to keep the UART
+         * virtual address aligned to an 1MiB boundary for the L1
+         * mapping the head code makes. We keep the UART virtual address
+         * aligned and add in the offset when we load the value here.
+         */
+
+        .macro addruart, rx, tmp
+                mrc     p15, 0, \rx, c1, c0
+                tst     \rx, #1
+                ldreq   \rx, = S3C_PA_UART
+                ldrne   \rx, = S3C_VA_UART
+#if CONFIG_DEBUG_S3C_UART != 0
+                add     \rx, \rx, #(0x10000 * CONFIG_DEBUG_S3C_UART)
+#endif
+        .endm
+
+#define fifo_full fifo_full_s5pv210
+#define fifo_level fifo_level_s5pv210
+
+#include <plat/debug-macro.S>
diff --git a/arch/arm/mach-s5pv310/include/mach/entry-macro.S b/arch/arm/mach-s5pv310/include/mach/entry-macro.S
new file mode 100644
index 000000000000..e600e1d522df
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/entry-macro.S
@@ -0,0 +1,84 @@
+/* arch/arm/mach-s5pv310/include/mach/entry-macro.S
+ *
+ * Cloned from arch/arm/mach-realview/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for S5PV310 platforms
+ *
+ * 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 <mach/hardware.h>
+#include <asm/hardware/gic.h>
+
+                .macro  disable_fiq
+                .endm
+
+                .macro  get_irqnr_preamble, base, tmp
+                ldr     \base, =gic_cpu_base_addr
+                ldr     \base, [\base]
+                .endm
+
+                .macro  arch_ret_to_user, tmp1, tmp2
+                .endm
+
+                /*
+                 * The interrupt numbering scheme is defined in the
+                 * interrupt controller spec.  To wit:
+                 *
+                 * Interrupts 0-15 are IPI
+                 * 16-28 are reserved
+                 * 29-31 are local.  We allow 30 to be used for the watchdog.
+                 * 32-1020 are global
+                 * 1021-1022 are reserved
+                 * 1023 is "spurious" (no interrupt)
+                 *
+                 * For now, we ignore all local interrupts so only return an interrupt if it's
+                 * between 30 and 1020.  The test_for_ipi routine below will pick up on IPIs.
+                 *
+                 * A simple read from the controller will tell us the number of the highest
+                 * priority enabled interrupt.  We then just need to check whether it is in the
+                 * valid range for an IRQ (30-1020 inclusive).
+                 */
+
+                .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+                ldr     \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 = src CPU, 9-0 = int # */
+
+                ldr     \tmp, =1021
+
+                bic     \irqnr, \irqstat, #0x1c00
+
+                cmp     \irqnr, #29
+                cmpcc   \irqnr, \irqnr
+                cmpne   \irqnr, \tmp
+                cmpcs   \irqnr, \irqnr
+                addne   \irqnr, \irqnr, #32
+
+                .endm
+
+                /* We assume that irqstat (the raw value of the IRQ acknowledge
+                 * register) is preserved from the macro above.
+                 * If there is an IPI, we immediately signal end of interrupt on the
+                 * controller, since this requires the original irqstat value which
+                 * we won't easily be able to recreate later.
+                 */
+
+                .macro test_for_ipi, irqnr, irqstat, base, tmp
+                bic     \irqnr, \irqstat, #0x1c00
+                cmp     \irqnr, #16
+                strcc   \irqstat, [\base, #GIC_CPU_EOI]
+                cmpcs   \irqnr, \irqnr
+                .endm
+
+                /* As above, this assumes that irqstat and base are preserved.. */
+
+                .macro test_for_ltirq, irqnr, irqstat, base, tmp
+                bic     \irqnr, \irqstat, #0x1c00
+                mov     \tmp, #0
+                cmp     \irqnr, #29
+                moveq   \tmp, #1
+                streq   \irqstat, [\base, #GIC_CPU_EOI]
+                cmp     \tmp, #0
+                .endm
diff --git a/arch/arm/mach-s5pv310/include/mach/gpio.h b/arch/arm/mach-s5pv310/include/mach/gpio.h
new file mode 100644
index 000000000000..20cb80c23466
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/gpio.h
@@ -0,0 +1,135 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/gpio.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - GPIO lib support
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H __FILE__
+
+#define gpio_get_value  __gpio_get_value
+#define gpio_set_value  __gpio_set_value
+#define gpio_cansleep   __gpio_cansleep
+#define gpio_to_irq     __gpio_to_irq
+
+/* Practically, GPIO banks upto GPZ are the configurable gpio banks */
+
+/* GPIO bank sizes */
+#define S5PV310_GPIO_A0_NR      (8)
+#define S5PV310_GPIO_A1_NR      (6)
+#define S5PV310_GPIO_B_NR       (8)
+#define S5PV310_GPIO_C0_NR      (5)
+#define S5PV310_GPIO_C1_NR      (5)
+#define S5PV310_GPIO_D0_NR      (4)
+#define S5PV310_GPIO_D1_NR      (4)
+#define S5PV310_GPIO_E0_NR      (5)
+#define S5PV310_GPIO_E1_NR      (8)
+#define S5PV310_GPIO_E2_NR      (6)
+#define S5PV310_GPIO_E3_NR      (8)
+#define S5PV310_GPIO_E4_NR      (8)
+#define S5PV310_GPIO_F0_NR      (8)
+#define S5PV310_GPIO_F1_NR      (8)
+#define S5PV310_GPIO_F2_NR      (8)
+#define S5PV310_GPIO_F3_NR      (6)
+#define S5PV310_GPIO_J0_NR      (8)
+#define S5PV310_GPIO_J1_NR      (5)
+#define S5PV310_GPIO_K0_NR      (7)
+#define S5PV310_GPIO_K1_NR      (7)
+#define S5PV310_GPIO_K2_NR      (7)
+#define S5PV310_GPIO_K3_NR      (7)
+#define S5PV310_GPIO_L0_NR      (8)
+#define S5PV310_GPIO_L1_NR      (3)
+#define S5PV310_GPIO_L2_NR      (8)
+#define S5PV310_GPIO_X0_NR      (8)
+#define S5PV310_GPIO_X1_NR      (8)
+#define S5PV310_GPIO_X2_NR      (8)
+#define S5PV310_GPIO_X3_NR      (8)
+#define S5PV310_GPIO_Z_NR       (7)
+
+/* GPIO bank numbers */
+
+#define S5PV310_GPIO_NEXT(__gpio) \
+        ((__gpio##_START) + (__gpio##_NR) + CONFIG_S3C_GPIO_SPACE + 1)
+
+enum s5p_gpio_number {
+        S5PV310_GPIO_A0_START   = 0,
+        S5PV310_GPIO_A1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_A0),
+        S5PV310_GPIO_B_START    = S5PV310_GPIO_NEXT(S5PV310_GPIO_A1),
+        S5PV310_GPIO_C0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_B),
+        S5PV310_GPIO_C1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_C0),
+        S5PV310_GPIO_D0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_C1),
+        S5PV310_GPIO_D1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_D0),
+        S5PV310_GPIO_E0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_D1),
+        S5PV310_GPIO_E1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_E0),
+        S5PV310_GPIO_E2_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_E1),
+        S5PV310_GPIO_E3_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_E2),
+        S5PV310_GPIO_E4_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_E3),
+        S5PV310_GPIO_F0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_E4),
+        S5PV310_GPIO_F1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_F0),
+        S5PV310_GPIO_F2_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_F1),
+        S5PV310_GPIO_F3_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_F2),
+        S5PV310_GPIO_J0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_F3),
+        S5PV310_GPIO_J1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_J0),
+        S5PV310_GPIO_K0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_J1),
+        S5PV310_GPIO_K1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_K0),
+        S5PV310_GPIO_K2_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_K1),
+        S5PV310_GPIO_K3_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_K2),
+        S5PV310_GPIO_L0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_K3),
+        S5PV310_GPIO_L1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_L0),
+        S5PV310_GPIO_L2_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_L1),
+        S5PV310_GPIO_X0_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_L2),
+        S5PV310_GPIO_X1_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_X0),
+        S5PV310_GPIO_X2_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_X1),
+        S5PV310_GPIO_X3_START   = S5PV310_GPIO_NEXT(S5PV310_GPIO_X2),
+        S5PV310_GPIO_Z_START    = S5PV310_GPIO_NEXT(S5PV310_GPIO_X3),
+};
+
+/* S5PV310 GPIO number definitions */
+#define S5PV310_GPA0(_nr)       (S5PV310_GPIO_A0_START + (_nr))
+#define S5PV310_GPA1(_nr)       (S5PV310_GPIO_A1_START + (_nr))
+#define S5PV310_GPB(_nr)        (S5PV310_GPIO_B_START + (_nr))
+#define S5PV310_GPC0(_nr)       (S5PV310_GPIO_C0_START + (_nr))
+#define S5PV310_GPC1(_nr)       (S5PV310_GPIO_C1_START + (_nr))
+#define S5PV310_GPD0(_nr)       (S5PV310_GPIO_D0_START + (_nr))
+#define S5PV310_GPD1(_nr)       (S5PV310_GPIO_D1_START + (_nr))
+#define S5PV310_GPE0(_nr)       (S5PV310_GPIO_E0_START + (_nr))
+#define S5PV310_GPE1(_nr)       (S5PV310_GPIO_E1_START + (_nr))
+#define S5PV310_GPE2(_nr)       (S5PV310_GPIO_E2_START + (_nr))
+#define S5PV310_GPE3(_nr)       (S5PV310_GPIO_E3_START + (_nr))
+#define S5PV310_GPE4(_nr)       (S5PV310_GPIO_E4_START + (_nr))
+#define S5PV310_GPF0(_nr)       (S5PV310_GPIO_F0_START + (_nr))
+#define S5PV310_GPF1(_nr)       (S5PV310_GPIO_F1_START + (_nr))
+#define S5PV310_GPF2(_nr)       (S5PV310_GPIO_F2_START + (_nr))
+#define S5PV310_GPF3(_nr)       (S5PV310_GPIO_F3_START + (_nr))
+#define S5PV310_GPJ0(_nr)       (S5PV310_GPIO_J0_START + (_nr))
+#define S5PV310_GPJ1(_nr)       (S5PV310_GPIO_J1_START + (_nr))
+#define S5PV310_GPK0(_nr)       (S5PV310_GPIO_K0_START + (_nr))
+#define S5PV310_GPK1(_nr)       (S5PV310_GPIO_K1_START + (_nr))
+#define S5PV310_GPK2(_nr)       (S5PV310_GPIO_K2_START + (_nr))
+#define S5PV310_GPK3(_nr)       (S5PV310_GPIO_K3_START + (_nr))
+#define S5PV310_GPL0(_nr)       (S5PV310_GPIO_L0_START + (_nr))
+#define S5PV310_GPL1(_nr)       (S5PV310_GPIO_L1_START + (_nr))
+#define S5PV310_GPL2(_nr)       (S5PV310_GPIO_L2_START + (_nr))
+#define S5PV310_GPX0(_nr)       (S5PV310_GPIO_X0_START + (_nr))
+#define S5PV310_GPX1(_nr)       (S5PV310_GPIO_X1_START + (_nr))
+#define S5PV310_GPX2(_nr)       (S5PV310_GPIO_X2_START + (_nr))
+#define S5PV310_GPX3(_nr)       (S5PV310_GPIO_X3_START + (_nr))
+#define S5PV310_GPZ(_nr)        (S5PV310_GPIO_Z_START + (_nr))
+
+/* the end of the S5PV310 specific gpios */
+#define S5PV310_GPIO_END        (S5PV310_GPZ(S5PV310_GPIO_Z_NR) + 1)
+#define S3C_GPIO_END            S5PV310_GPIO_END
+
+/* define the number of gpios we need to the one after the GPZ() range */
+#define ARCH_NR_GPIOS           (S5PV310_GPZ(S5PV310_GPIO_Z_NR) +       \
+                                 CONFIG_SAMSUNG_GPIO_EXTRA + 1)
+
+#include <asm-generic/gpio.h>
+
+#endif /* __ASM_ARCH_GPIO_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/hardware.h b/arch/arm/mach-s5pv310/include/mach/hardware.h
new file mode 100644
index 000000000000..28ff9881f1a6
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/hardware.h
@@ -0,0 +1,18 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/hardware.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - Hardware support
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H __FILE__
+
+/* currently nothing here, placeholder */
+
+#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/io.h b/arch/arm/mach-s5pv310/include/mach/io.h
new file mode 100644
index 000000000000..8a7f9128391f
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/io.h
@@ -0,0 +1,26 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/io.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Copyright 2008-2010 Ben Dooks <ben-linux@fluff.org>
+ *
+ * Based on arch/arm/mach-s5p6442/include/mach/io.h
+ *
+ * Default IO routines for S5PV310
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H __FILE__
+
+/* No current ISA/PCI bus support. */
+#define __io(a)         __typesafe_io(a)
+#define __mem_pci(a)    (a)
+
+#define IO_SPACE_LIMIT (0xFFFFFFFF)
+
+#endif /* __ASM_ARM_ARCH_IO_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/irqs.h b/arch/arm/mach-s5pv310/include/mach/irqs.h
new file mode 100644
index 000000000000..56885ca3773c
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/irqs.h
@@ -0,0 +1,74 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/irqs.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV210 - IRQ definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H __FILE__
+
+#include <plat/irqs.h>
+
+/* Private Peripheral Interrupt */
+#define IRQ_PPI(x)              S5P_IRQ(x+16)
+
+#define IRQ_LOCALTIMER          IRQ_PPI(13)
+
+/* Shared Peripheral Interrupt */
+#define IRQ_SPI(x)              S5P_IRQ(x+32)
+
+#define IRQ_EINT0               IRQ_SPI(40)
+#define IRQ_EINT1               IRQ_SPI(41)
+#define IRQ_EINT2               IRQ_SPI(42)
+#define IRQ_EINT3               IRQ_SPI(43)
+#define IRQ_USB_HSOTG           IRQ_SPI(44)
+#define IRQ_USB_HOST            IRQ_SPI(45)
+#define IRQ_MODEM_IF            IRQ_SPI(46)
+#define IRQ_ROTATOR             IRQ_SPI(47)
+#define IRQ_JPEG                IRQ_SPI(48)
+#define IRQ_2D                  IRQ_SPI(49)
+#define IRQ_PCIE                IRQ_SPI(50)
+#define IRQ_SYSTEM_TIMER        IRQ_SPI(51)
+#define IRQ_MFC                 IRQ_SPI(52)
+#define IRQ_WTD                 IRQ_SPI(53)
+#define IRQ_AUDIO_SS            IRQ_SPI(54)
+#define IRQ_AC97                IRQ_SPI(55)
+#define IRQ_SPDIF               IRQ_SPI(56)
+#define IRQ_KEYPAD              IRQ_SPI(57)
+#define IRQ_INTFEEDCTRL_SSS     IRQ_SPI(58)
+#define IRQ_SLIMBUS             IRQ_SPI(59)
+#define IRQ_PMU                 IRQ_SPI(60)
+#define IRQ_TSI                 IRQ_SPI(61)
+#define IRQ_SATA                IRQ_SPI(62)
+#define IRQ_GPS                 IRQ_SPI(63)
+
+#define MAX_IRQ_IN_COMBINER     8
+#define COMBINER_GROUP(x)       ((x) * MAX_IRQ_IN_COMBINER + IRQ_SPI(64))
+#define COMBINER_IRQ(x, y)      (COMBINER_GROUP(x) + y)
+
+#define IRQ_TIMER0_VIC          COMBINER_IRQ(22, 0)
+#define IRQ_TIMER1_VIC          COMBINER_IRQ(22, 1)
+#define IRQ_TIMER2_VIC          COMBINER_IRQ(22, 2)
+#define IRQ_TIMER3_VIC          COMBINER_IRQ(22, 3)
+#define IRQ_TIMER4_VIC          COMBINER_IRQ(22, 4)
+
+#define IRQ_UART0               COMBINER_IRQ(26, 0)
+#define IRQ_UART1               COMBINER_IRQ(26, 1)
+#define IRQ_UART2               COMBINER_IRQ(26, 2)
+#define IRQ_UART3               COMBINER_IRQ(26, 3)
+#define IRQ_UART4               COMBINER_IRQ(26, 4)
+
+#define IRQ_IIC                 COMBINER_IRQ(27, 0)
+
+/* Set the default NR_IRQS */
+#define NR_IRQS                 COMBINER_IRQ(MAX_COMBINER_NR, 0)
+
+#define MAX_COMBINER_NR         39
+
+#endif /* ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/map.h b/arch/arm/mach-s5pv310/include/mach/map.h
new file mode 100644
index 000000000000..87697c9fca5b
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/map.h
@@ -0,0 +1,69 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/map.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - Memory map definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_MAP_H
+#define __ASM_ARCH_MAP_H __FILE__
+
+#include <plat/map-base.h>
+
+/*
+ * S5PV310 UART offset is 0x10000 but the older S5P SoCs are 0x400.
+ * So need to define it, and here is to avoid redefinition warning.
+ */
+#define S3C_UART_OFFSET                 (0x10000)
+
+#include <plat/map-s5p.h>
+
+#define S5PV310_PA_CHIPID               (0x10000000)
+#define S5P_PA_CHIPID                   S5PV310_PA_CHIPID
+
+#define S5PV310_PA_SYSCON               (0x10020000)
+#define S5P_PA_SYSCON                   S5PV310_PA_SYSCON
+
+#define S5PV310_PA_WATCHDOG             (0x10060000)
+
+#define S5PV310_PA_COMBINER             (0x10448000)
+
+#define S5PV310_PA_COREPERI             (0x10500000)
+#define S5PV310_PA_GIC_CPU              (0x10500100)
+#define S5PV310_PA_TWD                  (0x10500600)
+#define S5PV310_PA_GIC_DIST             (0x10501000)
+#define S5PV310_PA_L2CC                 (0x10502000)
+
+#define S5PV310_PA_GPIO                 (0x11000000)
+#define S5P_PA_GPIO                     S5PV310_PA_GPIO
+
+#define S5PV310_PA_UART                 (0x13800000)
+
+#define S5P_PA_UART(x)                  (S5PV310_PA_UART + ((x) * S3C_UART_OFFSET))
+#define S5P_PA_UART0                    S5P_PA_UART(0)
+#define S5P_PA_UART1                    S5P_PA_UART(1)
+#define S5P_PA_UART2                    S5P_PA_UART(2)
+#define S5P_PA_UART3                    S5P_PA_UART(3)
+#define S5P_PA_UART4                    S5P_PA_UART(4)
+
+#define S5P_SZ_UART                     SZ_256
+
+#define S5PV310_PA_IIC0                 (0x13860000)
+
+#define S5PV310_PA_TIMER                (0x139D0000)
+#define S5P_PA_TIMER                    S5PV310_PA_TIMER
+
+#define S5PV310_PA_SDRAM                (0x40000000)
+#define S5P_PA_SDRAM                    S5PV310_PA_SDRAM
+
+/* compatibiltiy defines. */
+#define S3C_PA_UART                     S5PV310_PA_UART
+#define S3C_PA_IIC                      S5PV310_PA_IIC0
+#define S3C_PA_WDT                      S5PV310_PA_WATCHDOG
+
+#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/memory.h b/arch/arm/mach-s5pv310/include/mach/memory.h
new file mode 100644
index 000000000000..1dffb4823245
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/memory.h
@@ -0,0 +1,22 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/memory.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - Memory definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H __FILE__
+
+#define PHYS_OFFSET             UL(0x40000000)
+
+/* Maximum of 256MiB in one bank */
+#define MAX_PHYSMEM_BITS        32
+#define SECTION_SIZE_BITS       28
+
+#endif /* __ASM_ARCH_MEMORY_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/pwm-clock.h b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h
new file mode 100644
index 000000000000..7e6da2701088
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/pwm-clock.h
@@ -0,0 +1,70 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/pwm-clock.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Copyright 2008 Openmoko, Inc.
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * Based on arch/arm/mach-s3c64xx/include/mach/pwm-clock.h
+ *
+ * S5PV310 - pwm clock and timer support
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_PWMCLK_H
+#define __ASM_ARCH_PWMCLK_H __FILE__
+
+/**
+ * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk
+ * @tcfg: The timer TCFG1 register bits shifted down to 0.
+ *
+ * Return true if the given configuration from TCFG1 is a TCLK instead
+ * any of the TDIV clocks.
+ */
+static inline int pwm_cfg_src_is_tclk(unsigned long tcfg)
+{
+        return tcfg == S3C64XX_TCFG1_MUX_TCLK;
+}
+
+/**
+ * tcfg_to_divisor() - convert tcfg1 setting to a divisor
+ * @tcfg1: The tcfg1 setting, shifted down.
+ *
+ * Get the divisor value for the given tcfg1 setting. We assume the
+ * caller has already checked to see if this is not a TCLK source.
+ */
+static inline unsigned long tcfg_to_divisor(unsigned long tcfg1)
+{
+        return 1 << tcfg1;
+}
+
+/**
+ * pwm_tdiv_has_div1() - does the tdiv setting have a /1
+ *
+ * Return true if we have a /1 in the tdiv setting.
+ */
+static inline unsigned int pwm_tdiv_has_div1(void)
+{
+        return 1;
+}
+
+/**
+ * pwm_tdiv_div_bits() - calculate TCFG1 divisor value.
+ * @div: The divisor to calculate the bit information for.
+ *
+ * Turn a divisor into the necessary bit field for TCFG1.
+ */
+static inline unsigned long pwm_tdiv_div_bits(unsigned int div)
+{
+        return ilog2(div);
+}
+
+#define S3C_TCFG1_MUX_TCLK S3C64XX_TCFG1_MUX_TCLK
+
+#endif /* __ASM_ARCH_PWMCLK_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/regs-clock.h b/arch/arm/mach-s5pv310/include/mach/regs-clock.h
new file mode 100644
index 000000000000..59e3a7e94d80
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/regs-clock.h
@@ -0,0 +1,62 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/regs-clock.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - Clock register definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_REGS_CLOCK_H
+#define __ASM_ARCH_REGS_CLOCK_H __FILE__
+
+#include <mach/map.h>
+
+#define S5P_CLKREG(x)                   (S3C_VA_SYS + (x))
+
+#define S5P_INFORM0                     S5P_CLKREG(0x800)
+
+#define S5P_EPLL_CON0                   S5P_CLKREG(0x1C110)
+#define S5P_EPLL_CON1                   S5P_CLKREG(0x1C114)
+#define S5P_VPLL_CON0                   S5P_CLKREG(0x1C120)
+#define S5P_VPLL_CON1                   S5P_CLKREG(0x1C124)
+
+#define S5P_CLKSRC_TOP0                 S5P_CLKREG(0x1C210)
+#define S5P_CLKSRC_TOP1                 S5P_CLKREG(0x1C214)
+
+#define S5P_CLKSRC_PERIL0               S5P_CLKREG(0x1C250)
+
+#define S5P_CLKDIV_TOP                  S5P_CLKREG(0x1C510)
+
+#define S5P_CLKDIV_PERIL0               S5P_CLKREG(0x1C550)
+#define S5P_CLKDIV_PERIL1               S5P_CLKREG(0x1C554)
+#define S5P_CLKDIV_PERIL2               S5P_CLKREG(0x1C558)
+#define S5P_CLKDIV_PERIL3               S5P_CLKREG(0x1C55C)
+#define S5P_CLKDIV_PERIL4               S5P_CLKREG(0x1C560)
+#define S5P_CLKDIV_PERIL5               S5P_CLKREG(0x1C564)
+
+#define S5P_CLKGATE_IP_PERIL            S5P_CLKREG(0x1C950)
+
+#define S5P_CLKSRC_CORE                 S5P_CLKREG(0x20200)
+
+#define S5P_CLKDIV_CORE0                S5P_CLKREG(0x20500)
+
+#define S5P_APLL_LOCK                   S5P_CLKREG(0x24000)
+#define S5P_MPLL_LOCK                   S5P_CLKREG(0x24004)
+#define S5P_APLL_CON0                   S5P_CLKREG(0x24100)
+#define S5P_APLL_CON1                   S5P_CLKREG(0x24104)
+#define S5P_MPLL_CON0                   S5P_CLKREG(0x24108)
+#define S5P_MPLL_CON1                   S5P_CLKREG(0x2410C)
+
+#define S5P_CLKSRC_CPU                  S5P_CLKREG(0x24200)
+#define S5P_CLKMUX_STATCPU              S5P_CLKREG(0x24400)
+
+#define S5P_CLKDIV_CPU                  S5P_CLKREG(0x24500)
+#define S5P_CLKDIV_STATCPU              S5P_CLKREG(0x24600)
+
+#define S5P_CLKGATE_SCLKCPU             S5P_CLKREG(0x24800)
+
+#endif /* __ASM_ARCH_REGS_CLOCK_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/regs-irq.h b/arch/arm/mach-s5pv310/include/mach/regs-irq.h
new file mode 100644
index 000000000000..c6e09c7f9161
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/regs-irq.h
@@ -0,0 +1,19 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/regs-irq.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - IRQ register definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_REGS_IRQ_H
+#define __ASM_ARCH_REGS_IRQ_H __FILE__
+
+#include <asm/hardware/gic.h>
+#include <mach/map.h>
+
+#endif /* __ASM_ARCH_REGS_IRQ_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/smp.h b/arch/arm/mach-s5pv310/include/mach/smp.h
new file mode 100644
index 000000000000..990f3ba88a1f
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/smp.h
@@ -0,0 +1,29 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/smp.h
+ *
+ * Cloned from arch/arm/mach-realview/include/mach/smp.h
+*/
+
+#ifndef ASM_ARCH_SMP_H
+#define ASM_ARCH_SMP_H __FILE__
+
+#include <asm/hardware/gic.h>
+
+extern void __iomem *gic_cpu_base_addr;
+
+#define hard_smp_processor_id()                 \
+        ({                                              \
+                unsigned int cpunum;                    \
+                __asm__("mrc p15, 0, %0, c0, c0, 5"     \
+                        : "=r" (cpunum));               \
+                cpunum &= 0x03;                         \
+        })
+
+/*
+ * We use IRQ1 as the IPI
+ */
+static inline void smp_cross_call(const struct cpumask *mask)
+{
+        gic_raise_softirq(mask, 1);
+}
+
+#endif
diff --git a/arch/arm/mach-s5pv310/include/mach/system.h b/arch/arm/mach-s5pv310/include/mach/system.h
new file mode 100644
index 000000000000..d10c009cf0f1
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/system.h
@@ -0,0 +1,22 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/system.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - system support header
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H __FILE__
+
+#include <plat/system-reset.h>
+
+static void arch_idle(void)
+{
+        /* nothing here yet */
+}
+#endif /* __ASM_ARCH_SYSTEM_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/timex.h b/arch/arm/mach-s5pv310/include/mach/timex.h
new file mode 100644
index 000000000000..bd2359b952b4
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/timex.h
@@ -0,0 +1,29 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/timex.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Copyright (c) 2003-2010 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *
+ * Based on arch/arm/mach-s5p6442/include/mach/timex.h
+ *
+ * S5PV310 - time parameters
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H __FILE__
+
+/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
+ * a variable is useless. It seems as long as we make our timers an
+ * exact multiple of HZ, any value that makes a 1->1 correspondence
+ * for the time conversion functions to/from jiffies is acceptable.
+*/
+
+#define CLOCK_TICK_RATE 12000000
+
+#endif /* __ASM_ARCH_TIMEX_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/uncompress.h b/arch/arm/mach-s5pv310/include/mach/uncompress.h
new file mode 100644
index 000000000000..59593c1e2416
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/uncompress.h
@@ -0,0 +1,30 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/uncompress.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * S5PV310 - uncompress code
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H __FILE__
+
+#include <mach/map.h>
+#include <plat/uncompress.h>
+
+static void arch_detect_cpu(void)
+{
+        /* we do not need to do any cpu detection here at the moment. */
+
+        /*
+         * For preventing FIFO overrun or infinite loop of UART console,
+         * fifo_max should be the minimum fifo size of all of the UART channels
+         */
+        fifo_mask = S5PV210_UFSTAT_TXMASK;
+        fifo_max = 15 << S5PV210_UFSTAT_TXSHIFT;
+}
+#endif /* __ASM_ARCH_UNCOMPRESS_H */
diff --git a/arch/arm/mach-s5pv310/include/mach/vmalloc.h b/arch/arm/mach-s5pv310/include/mach/vmalloc.h
new file mode 100644
index 000000000000..3f565ebb7daa
--- /dev/null
+++ b/arch/arm/mach-s5pv310/include/mach/vmalloc.h
@@ -0,0 +1,22 @@
+/* linux/arch/arm/mach-s5pv310/include/mach/vmalloc.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Copyright 2010 Ben Dooks <ben-linux@fluff.org>
+ *
+ * Based on arch/arm/mach-s5p6440/include/mach/vmalloc.h
+ *
+ * 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.
+ *
+ * S5PV310 vmalloc definition
+*/
+
+#ifndef __ASM_ARCH_VMALLOC_H
+#define __ASM_ARCH_VMALLOC_H __FILE__
+
+#define VMALLOC_END       (0xF0000000)
+
+#endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mach-s5pv310/init.c b/arch/arm/mach-s5pv310/init.c
new file mode 100644
index 000000000000..182dcf42cfb4
--- /dev/null
+++ b/arch/arm/mach-s5pv310/init.c
@@ -0,0 +1,41 @@
+/* linux/arch/arm/mach-s5pv310/init.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.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/serial_core.h>
+
+#include <plat/cpu.h>
+#include <plat/devs.h>
+#include <plat/regs-serial.h>
+
+static struct s3c24xx_uart_clksrc s5pv310_serial_clocks[] = {
+        [0] = {
+                .name           = "uclk1",
+                .divisor        = 1,
+                .min_baud       = 0,
+                .max_baud       = 0,
+        },
+};
+
+/* uart registration process */
+void __init s5pv310_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+        struct s3c2410_uartcfg *tcfg = cfg;
+        u32 ucnt;
+
+        for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
+                if (!tcfg->clocks) {
+                        tcfg->has_fracval = 1;
+                        tcfg->clocks = s5pv310_serial_clocks;
+                        tcfg->clocks_size = ARRAY_SIZE(s5pv310_serial_clocks);
+                }
+        }
+
+        s3c24xx_init_uartdevs("s5pv210-uart", s5p_uart_resources, cfg, no);
+}
diff --git a/arch/arm/mach-s5pv310/irq-combiner.c b/arch/arm/mach-s5pv310/irq-combiner.c
new file mode 100644
index 000000000000..0f7052164f23
--- /dev/null
+++ b/arch/arm/mach-s5pv310/irq-combiner.c
@@ -0,0 +1,125 @@
+/* linux/arch/arm/mach-s5pv310/irq-combiner.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * Based on arch/arm/common/gic.c
+ *
+ * IRQ COMBINER support
+ *
+ * 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/io.h>
+
+#include <asm/mach/irq.h>
+
+#define COMBINER_ENABLE_SET     0x0
+#define COMBINER_ENABLE_CLEAR   0x4
+#define COMBINER_INT_STATUS     0xC
+
+static DEFINE_SPINLOCK(irq_controller_lock);
+
+struct combiner_chip_data {
+        unsigned int irq_offset;
+        void __iomem *base;
+};
+
+static struct combiner_chip_data combiner_data[MAX_COMBINER_NR];
+
+static inline void __iomem *combiner_base(unsigned int irq)
+{
+        struct combiner_chip_data *combiner_data = get_irq_chip_data(irq);
+        return combiner_data->base;
+}
+
+static void combiner_mask_irq(unsigned int irq)
+{
+        u32 mask = 1 << (irq % 32);
+
+        __raw_writel(mask, combiner_base(irq) + COMBINER_ENABLE_CLEAR);
+}
+
+static void combiner_unmask_irq(unsigned int irq)
+{
+        u32 mask = 1 << (irq % 32);
+
+        __raw_writel(mask, combiner_base(irq) + COMBINER_ENABLE_SET);
+}
+
+static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
+{
+        struct combiner_chip_data *chip_data = get_irq_data(irq);
+        struct irq_chip *chip = get_irq_chip(irq);
+        unsigned int cascade_irq, combiner_irq;
+        unsigned long status;
+
+        /* primary controller ack'ing */
+        chip->ack(irq);
+
+        spin_lock(&irq_controller_lock);
+        status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
+        spin_unlock(&irq_controller_lock);
+
+        if (status == 0)
+                goto out;
+
+        for (combiner_irq = 0; combiner_irq < 32; combiner_irq++) {
+                if (status & 0x1)
+                        break;
+                status >>= 1;
+        }
+
+        cascade_irq = combiner_irq + (chip_data->irq_offset & ~31);
+        if (unlikely(cascade_irq >= NR_IRQS))
+                do_bad_IRQ(cascade_irq, desc);
+        else
+                generic_handle_irq(cascade_irq);
+
+ out:
+        /* primary controller unmasking */
+        chip->unmask(irq);
+}
+
+static struct irq_chip combiner_chip = {
+        .name           = "COMBINER",
+        .mask           = combiner_mask_irq,
+        .unmask         = combiner_unmask_irq,
+};
+
+void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
+{
+        if (combiner_nr >= MAX_COMBINER_NR)
+                BUG();
+        if (set_irq_data(irq, &combiner_data[combiner_nr]) != 0)
+                BUG();
+        set_irq_chained_handler(irq, combiner_handle_cascade_irq);
+}
+
+void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
+                          unsigned int irq_start)
+{
+        unsigned int i;
+
+        if (combiner_nr >= MAX_COMBINER_NR)
+                BUG();
+
+        combiner_data[combiner_nr].base = base;
+        combiner_data[combiner_nr].irq_offset = irq_start;
+
+        /* Disable all interrupts */
+
+        __raw_writel(0xffffffff, base + COMBINER_ENABLE_CLEAR);
+
+        /* Setup the Linux IRQ subsystem */
+
+        for (i = irq_start; i < combiner_data[combiner_nr].irq_offset
+                                + MAX_IRQ_IN_COMBINER; i++) {
+                set_irq_chip(i, &combiner_chip);
+                set_irq_chip_data(i, &combiner_data[combiner_nr]);
+                set_irq_handler(i, handle_level_irq);
+                set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+        }
+}
diff --git a/arch/arm/mach-s5pv310/localtimer.c b/arch/arm/mach-s5pv310/localtimer.c
new file mode 100644
index 000000000000..2784036cd8b1
--- /dev/null
+++ b/arch/arm/mach-s5pv310/localtimer.c
@@ -0,0 +1,25 @@
+/* linux/arch/arm/mach-s5pv310/localtimer.c
+ *
+ * Cloned from linux/arch/arm/mach-realview/localtimer.c
+ *
+ *  Copyright (C) 2002 ARM Ltd.
+ *  All Rights Reserved
+ *
+ * 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/clockchips.h>
+
+#include <asm/irq.h>
+#include <asm/localtimer.h>
+
+/*
+ * Setup the local clock events for a CPU.
+ */
+void __cpuinit local_timer_setup(struct clock_event_device *evt)
+{
+        evt->irq = IRQ_LOCALTIMER;
+        twd_timer_setup(evt);
+}
diff --git a/arch/arm/mach-s5pv310/mach-smdkv310.c b/arch/arm/mach-s5pv310/mach-smdkv310.c
new file mode 100644
index 000000000000..0d6ab77709d2
--- /dev/null
+++ b/arch/arm/mach-s5pv310/mach-smdkv310.c
@@ -0,0 +1,92 @@
+/* linux/arch/arm/mach-s5pv310/mach-smdkv310.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.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/serial_core.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include <plat/regs-serial.h>
+#include <plat/s5pv310.h>
+#include <plat/cpu.h>
+
+#include <mach/map.h>
+
+/* Following are default values for UCON, ULCON and UFCON UART registers */
+#define SMDKV310_UCON_DEFAULT   (S3C2410_UCON_TXILEVEL |        \
+                                 S3C2410_UCON_RXILEVEL |        \
+                                 S3C2410_UCON_TXIRQMODE |       \
+                                 S3C2410_UCON_RXIRQMODE |       \
+                                 S3C2410_UCON_RXFIFO_TOI |      \
+                                 S3C2443_UCON_RXERR_IRQEN)
+
+#define SMDKV310_ULCON_DEFAULT  S3C2410_LCON_CS8
+
+#define SMDKV310_UFCON_DEFAULT  (S3C2410_UFCON_FIFOMODE |       \
+                                 S5PV210_UFCON_TXTRIG4 |        \
+                                 S5PV210_UFCON_RXTRIG4)
+
+static struct s3c2410_uartcfg smdkv310_uartcfgs[] __initdata = {
+        [0] = {
+                .hwport         = 0,
+                .flags          = 0,
+                .ucon           = SMDKV310_UCON_DEFAULT,
+                .ulcon          = SMDKV310_ULCON_DEFAULT,
+                .ufcon          = SMDKV310_UFCON_DEFAULT,
+        },
+        [1] = {
+                .hwport         = 1,
+                .flags          = 0,
+                .ucon           = SMDKV310_UCON_DEFAULT,
+                .ulcon          = SMDKV310_ULCON_DEFAULT,
+                .ufcon          = SMDKV310_UFCON_DEFAULT,
+        },
+        [2] = {
+                .hwport         = 2,
+                .flags          = 0,
+                .ucon           = SMDKV310_UCON_DEFAULT,
+                .ulcon          = SMDKV310_ULCON_DEFAULT,
+                .ufcon          = SMDKV310_UFCON_DEFAULT,
+        },
+        [3] = {
+                .hwport         = 3,
+                .flags          = 0,
+                .ucon           = SMDKV310_UCON_DEFAULT,
+                .ulcon          = SMDKV310_ULCON_DEFAULT,
+                .ufcon          = SMDKV310_UFCON_DEFAULT,
+        },
+};
+
+static void __init smdkv310_map_io(void)
+{
+        s5p_init_io(NULL, 0, S5P_VA_CHIPID);
+        s3c24xx_init_clocks(24000000);
+        s3c24xx_init_uarts(smdkv310_uartcfgs, ARRAY_SIZE(smdkv310_uartcfgs));
+}
+
+static void __init smdkv310_machine_init(void)
+{
+#ifdef CONFIG_CACHE_L2X0
+        l2x0_init(S5P_VA_L2CC, 1 << 28, 0xffffffff);
+#endif
+}
+
+MACHINE_START(SMDKV310, "SMDKV310")
+        /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
+        /* Maintainer: Changhwan Youn <chaos.youn@samsung.com> */
+        .phys_io        = S3C_PA_UART & 0xfff00000,
+        .io_pg_offst    = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
+        .boot_params    = S5P_PA_SDRAM + 0x100,
+        .init_irq       = s5pv310_init_irq,
+        .map_io         = smdkv310_map_io,
+        .init_machine   = smdkv310_machine_init,
+        .timer          = &s5pv310_timer,
+MACHINE_END
diff --git a/arch/arm/mach-s5pv310/mach-universal_c210.c b/arch/arm/mach-s5pv310/mach-universal_c210.c
new file mode 100644
index 000000000000..2388cb947936
--- /dev/null
+++ b/arch/arm/mach-s5pv310/mach-universal_c210.c
@@ -0,0 +1,86 @@
+/* linux/arch/arm/mach-s5pv310/mach-universal_c210.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *
+ * 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/serial_core.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+#include <asm/hardware/cache-l2x0.h>
+
+#include <plat/regs-serial.h>
+#include <plat/s5pv310.h>
+#include <plat/cpu.h>
+
+#include <mach/map.h>
+
+/* Following are default values for UCON, ULCON and UFCON UART registers */
+#define UNIVERSAL_UCON_DEFAULT  (S3C2410_UCON_TXILEVEL |        \
+                                 S3C2410_UCON_RXILEVEL |        \
+                                 S3C2410_UCON_TXIRQMODE |       \
+                                 S3C2410_UCON_RXIRQMODE |       \
+                                 S3C2410_UCON_RXFIFO_TOI |      \
+                                 S3C2443_UCON_RXERR_IRQEN)
+
+#define UNIVERSAL_ULCON_DEFAULT S3C2410_LCON_CS8
+
+#define UNIVERSAL_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE |       \
+                                 S5PV210_UFCON_TXTRIG256 |      \
+                                 S5PV210_UFCON_RXTRIG256)
+
+static struct s3c2410_uartcfg universal_uartcfgs[] __initdata = {
+        [0] = {
+                .hwport         = 0,
+                .ucon           = UNIVERSAL_UCON_DEFAULT,
+                .ulcon          = UNIVERSAL_ULCON_DEFAULT,
+                .ufcon          = UNIVERSAL_UFCON_DEFAULT,
+        },
+        [1] = {
+                .hwport         = 1,
+                .ucon           = UNIVERSAL_UCON_DEFAULT,
+                .ulcon          = UNIVERSAL_ULCON_DEFAULT,
+                .ufcon          = UNIVERSAL_UFCON_DEFAULT,
+        },
+        [2] = {
+                .hwport         = 2,
+                .ucon           = UNIVERSAL_UCON_DEFAULT,
+                .ulcon          = UNIVERSAL_ULCON_DEFAULT,
+                .ufcon          = UNIVERSAL_UFCON_DEFAULT,
+        },
+        [3] = {
+                .hwport         = 3,
+                .ucon           = UNIVERSAL_UCON_DEFAULT,
+                .ulcon          = UNIVERSAL_ULCON_DEFAULT,
+                .ufcon          = UNIVERSAL_UFCON_DEFAULT,
+        },
+};
+
+static void __init universal_map_io(void)
+{
+        s5p_init_io(NULL, 0, S5P_VA_CHIPID);
+        s3c24xx_init_clocks(24000000);
+        s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs));
+}
+
+static void __init universal_machine_init(void)
+{
+#ifdef CONFIG_CACHE_L2X0
+        l2x0_init(S5P_VA_L2CC, 1 << 28, 0xffffffff);
+#endif
+}
+
+MACHINE_START(UNIVERSAL_C210, "UNIVERSAL_C210")
+        /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
+        .phys_io        = S3C_PA_UART & 0xfff00000,
+        .io_pg_offst    = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
+        .boot_params    = S5P_PA_SDRAM + 0x100,
+        .init_irq       = s5pv310_init_irq,
+        .map_io         = universal_map_io,
+        .init_machine   = universal_machine_init,
+        .timer          = &s5pv310_timer,
+MACHINE_END
diff --git a/arch/arm/mach-s5pv310/platsmp.c b/arch/arm/mach-s5pv310/platsmp.c
new file mode 100644
index 000000000000..fe9469abd006
--- /dev/null
+++ b/arch/arm/mach-s5pv310/platsmp.c
@@ -0,0 +1,192 @@
+/* linux/arch/arm/mach-s5pv310/platsmp.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * Cloned from linux/arch/arm/mach-vexpress/platsmp.c
+ *
+ *  Copyright (C) 2002 ARM Ltd.
+ *  All Rights Reserved
+ *
+ * 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/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+
+#include <asm/cacheflush.h>
+#include <asm/localtimer.h>
+#include <asm/smp_scu.h>
+#include <asm/unified.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-clock.h>
+
+extern void s5pv310_secondary_startup(void);
+
+/*
+ * control for which core is the next to come out of the secondary
+ * boot "holding pen"
+ */
+
+volatile int __cpuinitdata pen_release = -1;
+
+static void __iomem *scu_base_addr(void)
+{
+        return (void __iomem *)(S5P_VA_SCU);
+}
+
+static DEFINE_SPINLOCK(boot_lock);
+
+void __cpuinit platform_secondary_init(unsigned int cpu)
+{
+        trace_hardirqs_off();
+
+        /*
+         * if any interrupts are already enabled for the primary
+         * core (e.g. timer irq), then they will not have been enabled
+         * for us: do so
+         */
+        gic_cpu_init(0, gic_cpu_base_addr);
+
+        /*
+         * let the primary processor know we're out of the
+         * pen, then head off into the C entry point
+         */
+        pen_release = -1;
+        smp_wmb();
+
+        /*
+         * Synchronise with the boot thread.
+         */
+        spin_lock(&boot_lock);
+        spin_unlock(&boot_lock);
+}
+
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+        unsigned long timeout;
+
+        /*
+         * Set synchronisation state between this boot processor
+         * and the secondary one
+         */
+        spin_lock(&boot_lock);
+
+        /*
+         * The secondary processor is waiting to be released from
+         * the holding pen - release it, then wait for it to flag
+         * that it has been released by resetting pen_release.
+         *
+         * Note that "pen_release" is the hardware CPU ID, whereas
+         * "cpu" is Linux's internal ID.
+         */
+        pen_release = cpu;
+        __cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
+        outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
+
+        /*
+         * Send the secondary CPU a soft interrupt, thereby causing
+         * the boot monitor to read the system wide flags register,
+         * and branch to the address found there.
+         */
+        smp_cross_call(cpumask_of(cpu));
+
+        timeout = jiffies + (1 * HZ);
+        while (time_before(jiffies, timeout)) {
+                smp_rmb();
+                if (pen_release == -1)
+                        break;
+
+                udelay(10);
+        }
+
+        /*
+         * now the secondary core is starting up let it run its
+         * calibrations, then wait for it to finish
+         */
+        spin_unlock(&boot_lock);
+
+        return pen_release != -1 ? -ENOSYS : 0;
+}
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+
+void __init smp_init_cpus(void)
+{
+        void __iomem *scu_base = scu_base_addr();
+        unsigned int i, ncores;
+
+        ncores = scu_base ? scu_get_core_count(scu_base) : 1;
+
+        /* sanity check */
+        if (ncores == 0) {
+                printk(KERN_ERR
+                       "S5PV310: strange CM count of 0? Default to 1\n");
+
+                ncores = 1;
+        }
+
+        if (ncores > NR_CPUS) {
+                printk(KERN_WARNING
+                       "S5PV310: no. of cores (%d) greater than configured "
+                       "maximum of %d - clipping\n",
+                       ncores, NR_CPUS);
+                ncores = NR_CPUS;
+        }
+
+        for (i = 0; i < ncores; i++)
+                set_cpu_possible(i, true);
+}
+
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+        unsigned int ncores = num_possible_cpus();
+        unsigned int cpu = smp_processor_id();
+        int i;
+
+        smp_store_cpu_info(cpu);
+
+        /* are we trying to boot more cores than exist? */
+        if (max_cpus > ncores)
+                max_cpus = ncores;
+
+        /*
+         * Initialise the present map, which describes the set of CPUs
+         * actually populated at the present time.
+         */
+        for (i = 0; i < max_cpus; i++)
+                set_cpu_present(i, true);
+
+        /*
+         * Initialise the SCU if there are more than one CPU and let
+         * them know where to start.
+         */
+        if (max_cpus > 1) {
+                /*
+                 * Enable the local timer or broadcast device for the
+                 * boot CPU, but only if we have more than one CPU.
+                 */
+                percpu_timer_setup();
+
+                scu_enable(scu_base_addr());
+
+                /*
+                 * Write the address of secondary startup into the
+                 * system-wide flags register. The boot monitor waits
+                 * until it receives a soft interrupt, and then the
+                 * secondary CPU branches to this address.
+                 */
+        __raw_writel(BSYM(virt_to_phys(s5pv310_secondary_startup)), S5P_INFORM0);
+        }
+}
diff --git a/arch/arm/mach-s5pv310/setup-i2c0.c b/arch/arm/mach-s5pv310/setup-i2c0.c
new file mode 100644
index 000000000000..436712807383
--- /dev/null
+++ b/arch/arm/mach-s5pv310/setup-i2c0.c
@@ -0,0 +1,28 @@
+/*
+ * linux/arch/arm/mach-s5pv310/setup-i2c0.c
+ *
+ * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com/
+ *
+ * I2C0 GPIO configuration.
+ *
+ * Based on plat-s3c64xx/setup-i2c0.c
+ *
+ * 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.
+*/
+
+struct platform_device; /* don't need the contents */
+
+#include <linux/gpio.h>
+#include <plat/iic.h>
+#include <plat/gpio-cfg.h>
+
+void s3c_i2c0_cfg_gpio(struct platform_device *dev)
+{
+        s3c_gpio_cfgpin(S5PV310_GPD1(0), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PV310_GPD1(0), S3C_GPIO_PULL_UP);
+        s3c_gpio_cfgpin(S5PV310_GPD1(1), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PV310_GPD1(1), S3C_GPIO_PULL_UP);
+}
diff --git a/arch/arm/mach-s5pv310/setup-i2c1.c b/arch/arm/mach-s5pv310/setup-i2c1.c
new file mode 100644
index 000000000000..1ecd5bc35b5a
--- /dev/null
+++ b/arch/arm/mach-s5pv310/setup-i2c1.c
@@ -0,0 +1,25 @@
+/*
+ * linux/arch/arm/mach-s5pv310/setup-i2c1.c
+ *
+ * Copyright (C) 2010 Samsung Electronics Co., Ltd.
+ *
+ * I2C1 GPIO configuration.
+ *
+ * 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.
+*/
+
+struct platform_device; /* don't need the contents */
+
+#include <linux/gpio.h>
+#include <plat/iic.h>
+#include <plat/gpio-cfg.h>
+
+void s3c_i2c1_cfg_gpio(struct platform_device *dev)
+{
+        s3c_gpio_cfgpin(S5PV310_GPD1(2), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PV310_GPD1(2), S3C_GPIO_PULL_UP);
+        s3c_gpio_cfgpin(S5PV310_GPD1(3), S3C_GPIO_SFN(2));
+        s3c_gpio_setpull(S5PV310_GPD1(3), S3C_GPIO_PULL_UP);
+}
diff --git a/arch/arm/mach-s5pv310/setup-i2c2.c b/arch/arm/mach-s5pv310/setup-i2c2.c
new file mode 100644
index 000000000000..4c0d8def660a
--- /dev/null
+++ b/arch/arm/mach-s5pv310/setup-i2c2.c
@@ -0,0 +1,25 @@
+/*
+ * linux/arch/arm/mach-s5pv310/setup-i2c2.c
+ *
+ * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
+ *
+ * I2C2 GPIO configuration.
+ *
+ * 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.
+*/
+
+struct platform_device; /* don't need the contents */
+
+#include <linux/gpio.h>
+#include <plat/iic.h>
+#include <plat/gpio-cfg.h>
+
+void s3c_i2c2_cfg_gpio(struct platform_device *dev)
+{
+        s3c_gpio_cfgpin(S5PV310_GPA0(6), S3C_GPIO_SFN(3));
+        s3c_gpio_setpull(S5PV310_GPA0(6), S3C_GPIO_PULL_UP);
+        s3c_gpio_cfgpin(S5PV310_GPA0(7), S3C_GPIO_SFN(3));
+        s3c_gpio_setpull(S5PV310_GPA0(7), S3C_GPIO_PULL_UP);
+}
diff --git a/arch/arm/mach-s5pv310/time.c b/arch/arm/mach-s5pv310/time.c
new file mode 100644
index 000000000000..01b012ad1bfd
--- /dev/null
+++ b/arch/arm/mach-s5pv310/time.c
@@ -0,0 +1,287 @@
+/* linux/arch/arm/mach-s5pv310/time.c
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ *
+ * S5PV310 (and compatible) HRT support
+ * PWM 2/4 is used for this feature
+ *
+ * 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/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/clockchips.h>
+#include <linux/platform_device.h>
+
+#include <asm/smp_twd.h>
+
+#include <mach/map.h>
+#include <plat/regs-timer.h>
+#include <asm/mach/time.h>
+
+static unsigned long clock_count_per_tick;
+
+static struct clk *tin2;
+static struct clk *tin4;
+static struct clk *tdiv2;
+static struct clk *tdiv4;
+static struct clk *timerclk;
+
+static void s5pv310_pwm_stop(unsigned int pwm_id)
+{
+        unsigned long tcon;
+
+        tcon = __raw_readl(S3C2410_TCON);
+
+        switch (pwm_id) {
+        case 2:
+                tcon &= ~S3C2410_TCON_T2START;
+                break;
+        case 4:
+                tcon &= ~S3C2410_TCON_T4START;
+                break;
+        default:
+                break;
+        }
+        __raw_writel(tcon, S3C2410_TCON);
+}
+
+static void s5pv310_pwm_init(unsigned int pwm_id, unsigned long tcnt)
+{
+        unsigned long tcon;
+
+        tcon = __raw_readl(S3C2410_TCON);
+
+        /* timers reload after counting zero, so reduce the count by 1 */
+        tcnt--;
+
+        /* ensure timer is stopped... */
+        switch (pwm_id) {
+        case 2:
+                tcon &= ~(0xf<<12);
+                tcon |= S3C2410_TCON_T2MANUALUPD;
+
+                __raw_writel(tcnt, S3C2410_TCNTB(2));
+                __raw_writel(tcnt, S3C2410_TCMPB(2));
+                __raw_writel(tcon, S3C2410_TCON);
+
+                break;
+        case 4:
+                tcon &= ~(7<<20);
+                tcon |= S3C2410_TCON_T4MANUALUPD;
+
+                __raw_writel(tcnt, S3C2410_TCNTB(4));
+                __raw_writel(tcnt, S3C2410_TCMPB(4));
+                __raw_writel(tcon, S3C2410_TCON);
+
+                break;
+        default:
+                break;
+        }
+}
+
+static inline void s5pv310_pwm_start(unsigned int pwm_id, bool periodic)
+{
+        unsigned long tcon;
+
+        tcon  = __raw_readl(S3C2410_TCON);
+
+        switch (pwm_id) {
+        case 2:
+                tcon |= S3C2410_TCON_T2START;
+                tcon &= ~S3C2410_TCON_T2MANUALUPD;
+
+                if (periodic)
+                        tcon |= S3C2410_TCON_T2RELOAD;
+                else
+                        tcon &= ~S3C2410_TCON_T2RELOAD;
+                break;
+        case 4:
+                tcon |= S3C2410_TCON_T4START;
+                tcon &= ~S3C2410_TCON_T4MANUALUPD;
+
+                if (periodic)
+                        tcon |= S3C2410_TCON_T4RELOAD;
+                else
+                        tcon &= ~S3C2410_TCON_T4RELOAD;
+                break;
+        default:
+                break;
+        }
+        __raw_writel(tcon, S3C2410_TCON);
+}
+
+static int s5pv310_pwm_set_next_event(unsigned long cycles,
+                                        struct clock_event_device *evt)
+{
+        s5pv310_pwm_init(2, cycles);
+        s5pv310_pwm_start(2, 0);
+        return 0;
+}
+
+static void s5pv310_pwm_set_mode(enum clock_event_mode mode,
+                                struct clock_event_device *evt)
+{
+        s5pv310_pwm_stop(2);
+
+        switch (mode) {
+        case CLOCK_EVT_MODE_PERIODIC:
+                s5pv310_pwm_init(2, clock_count_per_tick);
+                s5pv310_pwm_start(2, 1);
+                break;
+        case CLOCK_EVT_MODE_ONESHOT:
+                break;
+        case CLOCK_EVT_MODE_UNUSED:
+        case CLOCK_EVT_MODE_SHUTDOWN:
+        case CLOCK_EVT_MODE_RESUME:
+                break;
+        }
+}
+
+static struct clock_event_device pwm_event_device = {
+        .name           = "pwm_timer2",
+        .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
+        .rating         = 200,
+        .shift          = 32,
+        .set_next_event = s5pv310_pwm_set_next_event,
+        .set_mode       = s5pv310_pwm_set_mode,
+};
+
+irqreturn_t s5pv310_clock_event_isr(int irq, void *dev_id)
+{
+        struct clock_event_device *evt = &pwm_event_device;
+
+        evt->event_handler(evt);
+
+        return IRQ_HANDLED;
+}
+
+static struct irqaction s5pv310_clock_event_irq = {
+        .name           = "pwm_timer2_irq",
+        .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+        .handler        = s5pv310_clock_event_isr,
+};
+
+static void __init s5pv310_clockevent_init(void)
+{
+        unsigned long pclk;
+        unsigned long clock_rate;
+        struct clk *tscaler;
+
+        pclk = clk_get_rate(timerclk);
+
+        /* configure clock tick */
+
+        tscaler = clk_get_parent(tdiv2);
+
+        clk_set_rate(tscaler, pclk / 2);
+        clk_set_rate(tdiv2, pclk / 2);
+        clk_set_parent(tin2, tdiv2);
+
+        clock_rate = clk_get_rate(tin2);
+
+        clock_count_per_tick = clock_rate / HZ;
+
+        pwm_event_device.mult =
+                div_sc(clock_rate, NSEC_PER_SEC, pwm_event_device.shift);
+        pwm_event_device.max_delta_ns =
+                clockevent_delta2ns(-1, &pwm_event_device);
+        pwm_event_device.min_delta_ns =
+                clockevent_delta2ns(1, &pwm_event_device);
+
+        pwm_event_device.cpumask = cpumask_of(0);
+        clockevents_register_device(&pwm_event_device);
+
+        setup_irq(IRQ_TIMER2, &s5pv310_clock_event_irq);
+}
+
+static cycle_t s5pv310_pwm4_read(struct clocksource *cs)
+{
+        return (cycle_t) ~__raw_readl(S3C_TIMERREG(0x40));
+}
+
+struct clocksource pwm_clocksource = {
+        .name           = "pwm_timer4",
+        .rating         = 250,
+        .read           = s5pv310_pwm4_read,
+        .mask           = CLOCKSOURCE_MASK(32),
+        .shift          = 20,
+        .flags          = CLOCK_SOURCE_IS_CONTINUOUS ,
+};
+
+static void __init s5pv310_clocksource_init(void)
+{
+        unsigned long pclk;
+        unsigned long clock_rate;
+
+        pclk = clk_get_rate(timerclk);
+
+        clk_set_rate(tdiv4, pclk / 2);
+        clk_set_parent(tin4, tdiv4);
+
+        clock_rate = clk_get_rate(tin4);
+
+        s5pv310_pwm_init(4, ~0);
+        s5pv310_pwm_start(4, 1);
+
+        pwm_clocksource.mult =
+                clocksource_khz2mult(clock_rate/1000, pwm_clocksource.shift);
+
+        if (clocksource_register(&pwm_clocksource))
+                panic("%s: can't register clocksource\n", pwm_clocksource.name);
+}
+
+static void __init s5pv310_timer_resources(void)
+{
+        struct platform_device tmpdev;
+
+        tmpdev.dev.bus = &platform_bus_type;
+
+        timerclk = clk_get(NULL, "timers");
+        if (IS_ERR(timerclk))
+                panic("failed to get timers clock for system timer");
+
+        clk_enable(timerclk);
+
+        tmpdev.id = 2;
+        tin2 = clk_get(&tmpdev.dev, "pwm-tin");
+        if (IS_ERR(tin2))
+                panic("failed to get pwm-tin2 clock for system timer");
+
+        tdiv2 = clk_get(&tmpdev.dev, "pwm-tdiv");
+        if (IS_ERR(tdiv2))
+                panic("failed to get pwm-tdiv2 clock for system timer");
+        clk_enable(tin2);
+
+        tmpdev.id = 4;
+        tin4 = clk_get(&tmpdev.dev, "pwm-tin");
+        if (IS_ERR(tin4))
+                panic("failed to get pwm-tin4 clock for system timer");
+
+        tdiv4 = clk_get(&tmpdev.dev, "pwm-tdiv");
+        if (IS_ERR(tdiv4))
+                panic("failed to get pwm-tdiv4 clock for system timer");
+
+        clk_enable(tin4);
+}
+
+static void __init s5pv310_timer_init(void)
+{
+#ifdef CONFIG_LOCAL_TIMERS
+        twd_base = S5P_VA_TWD;
+#endif
+
+        s5pv310_timer_resources();
+        s5pv310_clockevent_init();
+        s5pv310_clocksource_init();
+}
+
+struct sys_timer s5pv310_timer = {
+        .init           = s5pv310_timer_init,
+};