zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/arch/arm/mach-exynos/common.c b/ap/os/linux/linux-3.4.x/arch/arm/mach-exynos/common.c
new file mode 100644
index 0000000..5ccd6e8
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/arch/arm/mach-exynos/common.c
@@ -0,0 +1,980 @@
+/*
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Common Codes for EXYNOS
+ *
+ * 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/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/sched.h>
+#include <linux/serial_core.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+
+#include <asm/proc-fns.h>
+#include <asm/exception.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/cacheflush.h>
+
+#include <mach/regs-irq.h>
+#include <mach/regs-pmu.h>
+#include <mach/regs-gpio.h>
+#include <mach/pmu.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+#include <plat/devs.h>
+#include <plat/pm.h>
+#include <plat/sdhci.h>
+#include <plat/gpio-cfg.h>
+#include <plat/adc-core.h>
+#include <plat/fb-core.h>
+#include <plat/fimc-core.h>
+#include <plat/iic-core.h>
+#include <plat/tv-core.h>
+#include <plat/regs-serial.h>
+
+#include "common.h"
+#define L2_AUX_VAL 0x7C470001
+#define L2_AUX_MASK 0xC200ffff
+
+static const char name_exynos4210[] = "EXYNOS4210";
+static const char name_exynos4212[] = "EXYNOS4212";
+static const char name_exynos4412[] = "EXYNOS4412";
+static const char name_exynos5250[] = "EXYNOS5250";
+
+static void exynos4_map_io(void);
+static void exynos5_map_io(void);
+static void exynos4_init_clocks(int xtal);
+static void exynos5_init_clocks(int xtal);
+static void exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no);
+static int exynos_init(void);
+
+static struct cpu_table cpu_ids[] __initdata = {
+ {
+ .idcode = EXYNOS4210_CPU_ID,
+ .idmask = EXYNOS4_CPU_MASK,
+ .map_io = exynos4_map_io,
+ .init_clocks = exynos4_init_clocks,
+ .init_uarts = exynos_init_uarts,
+ .init = exynos_init,
+ .name = name_exynos4210,
+ }, {
+ .idcode = EXYNOS4212_CPU_ID,
+ .idmask = EXYNOS4_CPU_MASK,
+ .map_io = exynos4_map_io,
+ .init_clocks = exynos4_init_clocks,
+ .init_uarts = exynos_init_uarts,
+ .init = exynos_init,
+ .name = name_exynos4212,
+ }, {
+ .idcode = EXYNOS4412_CPU_ID,
+ .idmask = EXYNOS4_CPU_MASK,
+ .map_io = exynos4_map_io,
+ .init_clocks = exynos4_init_clocks,
+ .init_uarts = exynos_init_uarts,
+ .init = exynos_init,
+ .name = name_exynos4412,
+ }, {
+ .idcode = EXYNOS5250_SOC_ID,
+ .idmask = EXYNOS5_SOC_MASK,
+ .map_io = exynos5_map_io,
+ .init_clocks = exynos5_init_clocks,
+ .init_uarts = exynos_init_uarts,
+ .init = exynos_init,
+ .name = name_exynos5250,
+ },
+};
+
+/* Initial IO mappings */
+
+static struct map_desc exynos_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_CHIPID,
+ .pfn = __phys_to_pfn(EXYNOS_PA_CHIPID),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc exynos4_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S3C_VA_SYS,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_SYSCON),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_TIMER,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_TIMER),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_WATCHDOG,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_WATCHDOG),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SROMC,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SYSTIMER,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_PMU,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_PMU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_COMBINER_BASE,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_CPU,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_DIST,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_UART,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_UART),
+ .length = SZ_512K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_CMU,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_CMU),
+ .length = SZ_128K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_COREPERI_BASE,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI),
+ .length = SZ_8K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_L2CC,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_L2CC),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_DMC0,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_DMC1,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_DMC1),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_USB_HSPHY,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc exynos4_iodesc0[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_SYSRAM,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc exynos4_iodesc1[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_SYSRAM,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc exynos5_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S3C_VA_SYS,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_SYSCON),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_TIMER,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_TIMER),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_WATCHDOG,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_WATCHDOG),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SROMC,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_SROMC),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SYSTIMER,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_SYSTIMER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_SYSRAM,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_CMU,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_CMU),
+ .length = 144 * SZ_1K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_PMU,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_PMU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_COMBINER_BASE,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_COMBINER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_UART,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_UART),
+ .length = SZ_512K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_CPU,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_GIC_CPU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_DIST,
+ .pfn = __phys_to_pfn(EXYNOS5_PA_GIC_DIST),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ },
+};
+
+void exynos4_restart(char mode, const char *cmd)
+{
+ __raw_writel(0x1, S5P_SWRESET);
+}
+
+void exynos5_restart(char mode, const char *cmd)
+{
+ __raw_writel(0x1, EXYNOS_SWRESET);
+}
+
+/*
+ * exynos_map_io
+ *
+ * register the standard cpu IO areas
+ */
+
+void __init exynos_init_io(struct map_desc *mach_desc, int size)
+{
+ /* initialize the io descriptors we need for initialization */
+ iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
+ if (mach_desc)
+ iotable_init(mach_desc, size);
+
+ /* detect cpu id and rev. */
+ s5p_init_cpu(S5P_VA_CHIPID);
+
+ s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
+}
+
+static void __init exynos4_map_io(void)
+{
+ iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
+
+ if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
+ iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
+ else
+ iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
+
+ /* initialize device information early */
+ exynos4_default_sdhci0();
+ exynos4_default_sdhci1();
+ exynos4_default_sdhci2();
+ exynos4_default_sdhci3();
+
+ s3c_adc_setname("samsung-adc-v3");
+
+ s3c_fimc_setname(0, "exynos4-fimc");
+ s3c_fimc_setname(1, "exynos4-fimc");
+ s3c_fimc_setname(2, "exynos4-fimc");
+ s3c_fimc_setname(3, "exynos4-fimc");
+
+ s3c_sdhci_setname(0, "exynos4-sdhci");
+ s3c_sdhci_setname(1, "exynos4-sdhci");
+ s3c_sdhci_setname(2, "exynos4-sdhci");
+ s3c_sdhci_setname(3, "exynos4-sdhci");
+
+ /* The I2C bus controllers are directly compatible with s3c2440 */
+ s3c_i2c0_setname("s3c2440-i2c");
+ s3c_i2c1_setname("s3c2440-i2c");
+ s3c_i2c2_setname("s3c2440-i2c");
+
+ s5p_fb_setname(0, "exynos4-fb");
+ s5p_hdmi_setname("exynos4-hdmi");
+}
+
+static void __init exynos5_map_io(void)
+{
+ iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
+
+ s3c_device_i2c0.resource[0].start = EXYNOS5_PA_IIC(0);
+ s3c_device_i2c0.resource[0].end = EXYNOS5_PA_IIC(0) + SZ_4K - 1;
+ s3c_device_i2c0.resource[1].start = EXYNOS5_IRQ_IIC;
+ s3c_device_i2c0.resource[1].end = EXYNOS5_IRQ_IIC;
+
+ s3c_sdhci_setname(0, "exynos4-sdhci");
+ s3c_sdhci_setname(1, "exynos4-sdhci");
+ s3c_sdhci_setname(2, "exynos4-sdhci");
+ s3c_sdhci_setname(3, "exynos4-sdhci");
+
+ /* The I2C bus controllers are directly compatible with s3c2440 */
+ s3c_i2c0_setname("s3c2440-i2c");
+ s3c_i2c1_setname("s3c2440-i2c");
+ s3c_i2c2_setname("s3c2440-i2c");
+}
+
+static void __init exynos4_init_clocks(int xtal)
+{
+ printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+ s3c24xx_register_baseclocks(xtal);
+ s5p_register_clocks(xtal);
+
+ if (soc_is_exynos4210())
+ exynos4210_register_clocks();
+ else if (soc_is_exynos4212() || soc_is_exynos4412())
+ exynos4212_register_clocks();
+
+ exynos4_register_clocks();
+ exynos4_setup_clocks();
+}
+
+static void __init exynos5_init_clocks(int xtal)
+{
+ printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
+
+ s3c24xx_register_baseclocks(xtal);
+ s5p_register_clocks(xtal);
+
+ exynos5_register_clocks();
+ exynos5_setup_clocks();
+}
+
+#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;
+ unsigned int irq_mask;
+ void __iomem *base;
+};
+
+static struct combiner_chip_data combiner_data[MAX_COMBINER_NR];
+
+static inline void __iomem *combiner_base(struct irq_data *data)
+{
+ struct combiner_chip_data *combiner_data =
+ irq_data_get_irq_chip_data(data);
+
+ return combiner_data->base;
+}
+
+static void combiner_mask_irq(struct irq_data *data)
+{
+ u32 mask = 1 << (data->irq % 32);
+
+ __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR);
+}
+
+static void combiner_unmask_irq(struct irq_data *data)
+{
+ u32 mask = 1 << (data->irq % 32);
+
+ __raw_writel(mask, combiner_base(data) + COMBINER_ENABLE_SET);
+}
+
+static void combiner_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
+{
+ struct combiner_chip_data *chip_data = irq_get_handler_data(irq);
+ struct irq_chip *chip = irq_get_chip(irq);
+ unsigned int cascade_irq, combiner_irq;
+ unsigned long status;
+
+ chained_irq_enter(chip, desc);
+
+ spin_lock(&irq_controller_lock);
+ status = __raw_readl(chip_data->base + COMBINER_INT_STATUS);
+ spin_unlock(&irq_controller_lock);
+ status &= chip_data->irq_mask;
+
+ if (status == 0)
+ goto out;
+
+ combiner_irq = __ffs(status);
+
+ 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:
+ chained_irq_exit(chip, desc);
+}
+
+static struct irq_chip combiner_chip = {
+ .name = "COMBINER",
+ .irq_mask = combiner_mask_irq,
+ .irq_unmask = combiner_unmask_irq,
+};
+
+static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq)
+{
+ unsigned int max_nr;
+
+ if (soc_is_exynos5250())
+ max_nr = EXYNOS5_MAX_COMBINER_NR;
+ else
+ max_nr = EXYNOS4_MAX_COMBINER_NR;
+
+ if (combiner_nr >= max_nr)
+ BUG();
+ if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0)
+ BUG();
+ irq_set_chained_handler(irq, combiner_handle_cascade_irq);
+}
+
+static void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
+ unsigned int irq_start)
+{
+ unsigned int i;
+ unsigned int max_nr;
+
+ if (soc_is_exynos5250())
+ max_nr = EXYNOS5_MAX_COMBINER_NR;
+ else
+ max_nr = EXYNOS4_MAX_COMBINER_NR;
+
+ if (combiner_nr >= max_nr)
+ BUG();
+
+ combiner_data[combiner_nr].base = base;
+ combiner_data[combiner_nr].irq_offset = irq_start;
+ combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3);
+
+ /* Disable all interrupts */
+
+ __raw_writel(combiner_data[combiner_nr].irq_mask,
+ 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++) {
+ irq_set_chip_and_handler(i, &combiner_chip, handle_level_irq);
+ irq_set_chip_data(i, &combiner_data[combiner_nr]);
+ set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+ }
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id exynos4_dt_irq_match[] = {
+ { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+ {},
+};
+#endif
+
+void __init exynos4_init_irq(void)
+{
+ int irq;
+ unsigned int gic_bank_offset;
+
+ gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
+
+ if (!of_have_populated_dt())
+ gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
+#ifdef CONFIG_OF
+ else
+ of_irq_init(exynos4_dt_irq_match);
+#endif
+
+ for (irq = 0; irq < EXYNOS4_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 EXYNOS4
+ * uses GIC instead of VIC.
+ */
+ s5p_init_irq(NULL, 0);
+}
+
+void __init exynos5_init_irq(void)
+{
+ int irq;
+
+#ifdef CONFIG_OF
+ of_irq_init(exynos4_dt_irq_match);
+#endif
+
+ for (irq = 0; irq < EXYNOS5_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 EXYNOS4
+ * uses GIC instead of VIC.
+ */
+ s5p_init_irq(NULL, 0);
+}
+
+struct bus_type exynos4_subsys = {
+ .name = "exynos4-core",
+ .dev_name = "exynos4-core",
+};
+
+struct bus_type exynos5_subsys = {
+ .name = "exynos5-core",
+ .dev_name = "exynos5-core",
+};
+
+static struct device exynos4_dev = {
+ .bus = &exynos4_subsys,
+};
+
+static struct device exynos5_dev = {
+ .bus = &exynos5_subsys,
+};
+
+static int __init exynos_core_init(void)
+{
+ if (soc_is_exynos5250())
+ return subsys_system_register(&exynos5_subsys, NULL);
+ else
+ return subsys_system_register(&exynos4_subsys, NULL);
+}
+core_initcall(exynos_core_init);
+
+#ifdef CONFIG_CACHE_L2X0
+static int __init exynos4_l2x0_cache_init(void)
+{
+ int ret;
+
+ if (soc_is_exynos5250())
+ return 0;
+
+ ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK);
+ if (!ret) {
+ l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+ clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+ return 0;
+ }
+
+ if (!(__raw_readl(S5P_VA_L2CC + L2X0_CTRL) & 0x1)) {
+ l2x0_saved_regs.phy_base = EXYNOS4_PA_L2CC;
+ /* TAG, Data Latency Control: 2 cycles */
+ l2x0_saved_regs.tag_latency = 0x110;
+
+ if (soc_is_exynos4212() || soc_is_exynos4412())
+ l2x0_saved_regs.data_latency = 0x120;
+ else
+ l2x0_saved_regs.data_latency = 0x110;
+
+ l2x0_saved_regs.prefetch_ctrl = 0x30000007;
+ l2x0_saved_regs.pwr_ctrl =
+ (L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN);
+
+ l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
+
+ __raw_writel(l2x0_saved_regs.tag_latency,
+ S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
+ __raw_writel(l2x0_saved_regs.data_latency,
+ S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
+
+ /* L2X0 Prefetch Control */
+ __raw_writel(l2x0_saved_regs.prefetch_ctrl,
+ S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
+
+ /* L2X0 Power Control */
+ __raw_writel(l2x0_saved_regs.pwr_ctrl,
+ S5P_VA_L2CC + L2X0_POWER_CTRL);
+
+ clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
+ clean_dcache_area(&l2x0_saved_regs, sizeof(struct l2x0_regs));
+ }
+
+ l2x0_init(S5P_VA_L2CC, L2_AUX_VAL, L2_AUX_MASK);
+ return 0;
+}
+early_initcall(exynos4_l2x0_cache_init);
+#endif
+
+static int __init exynos5_l2_cache_init(void)
+{
+ unsigned int val;
+
+ if (!soc_is_exynos5250())
+ return 0;
+
+ asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
+ "bic %0, %0, #(1 << 2)\n" /* cache disable */
+ "mcr p15, 0, %0, c1, c0, 0\n"
+ "mrc p15, 1, %0, c9, c0, 2\n"
+ : "=r"(val));
+
+ val |= (1 << 9) | (1 << 5) | (2 << 6) | (2 << 0);
+
+ asm volatile("mcr p15, 1, %0, c9, c0, 2\n" : : "r"(val));
+ asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
+ "orr %0, %0, #(1 << 2)\n" /* cache enable */
+ "mcr p15, 0, %0, c1, c0, 0\n"
+ : : "r"(val));
+
+ return 0;
+}
+early_initcall(exynos5_l2_cache_init);
+
+static int __init exynos_init(void)
+{
+ printk(KERN_INFO "EXYNOS: Initializing architecture\n");
+
+ if (soc_is_exynos5250())
+ return device_register(&exynos5_dev);
+ else
+ return device_register(&exynos4_dev);
+}
+
+/* uart registration process */
+
+static void __init exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no)
+{
+ struct s3c2410_uartcfg *tcfg = cfg;
+ u32 ucnt;
+
+ for (ucnt = 0; ucnt < no; ucnt++, tcfg++)
+ tcfg->has_fracval = 1;
+
+ if (soc_is_exynos5250())
+ s3c24xx_init_uartdevs("exynos4210-uart", exynos5_uart_resources, cfg, no);
+ else
+ s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
+}
+
+static void __iomem *exynos_eint_base;
+
+static DEFINE_SPINLOCK(eint_lock);
+
+static unsigned int eint0_15_data[16];
+
+static inline int exynos4_irq_to_gpio(unsigned int irq)
+{
+ if (irq < IRQ_EINT(0))
+ return -EINVAL;
+
+ irq -= IRQ_EINT(0);
+ if (irq < 8)
+ return EXYNOS4_GPX0(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS4_GPX1(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS4_GPX2(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS4_GPX3(irq);
+
+ return -EINVAL;
+}
+
+static inline int exynos5_irq_to_gpio(unsigned int irq)
+{
+ if (irq < IRQ_EINT(0))
+ return -EINVAL;
+
+ irq -= IRQ_EINT(0);
+ if (irq < 8)
+ return EXYNOS5_GPX0(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS5_GPX1(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS5_GPX2(irq);
+
+ irq -= 8;
+ if (irq < 8)
+ return EXYNOS5_GPX3(irq);
+
+ return -EINVAL;
+}
+
+static unsigned int exynos4_eint0_15_src_int[16] = {
+ EXYNOS4_IRQ_EINT0,
+ EXYNOS4_IRQ_EINT1,
+ EXYNOS4_IRQ_EINT2,
+ EXYNOS4_IRQ_EINT3,
+ EXYNOS4_IRQ_EINT4,
+ EXYNOS4_IRQ_EINT5,
+ EXYNOS4_IRQ_EINT6,
+ EXYNOS4_IRQ_EINT7,
+ EXYNOS4_IRQ_EINT8,
+ EXYNOS4_IRQ_EINT9,
+ EXYNOS4_IRQ_EINT10,
+ EXYNOS4_IRQ_EINT11,
+ EXYNOS4_IRQ_EINT12,
+ EXYNOS4_IRQ_EINT13,
+ EXYNOS4_IRQ_EINT14,
+ EXYNOS4_IRQ_EINT15,
+};
+
+static unsigned int exynos5_eint0_15_src_int[16] = {
+ EXYNOS5_IRQ_EINT0,
+ EXYNOS5_IRQ_EINT1,
+ EXYNOS5_IRQ_EINT2,
+ EXYNOS5_IRQ_EINT3,
+ EXYNOS5_IRQ_EINT4,
+ EXYNOS5_IRQ_EINT5,
+ EXYNOS5_IRQ_EINT6,
+ EXYNOS5_IRQ_EINT7,
+ EXYNOS5_IRQ_EINT8,
+ EXYNOS5_IRQ_EINT9,
+ EXYNOS5_IRQ_EINT10,
+ EXYNOS5_IRQ_EINT11,
+ EXYNOS5_IRQ_EINT12,
+ EXYNOS5_IRQ_EINT13,
+ EXYNOS5_IRQ_EINT14,
+ EXYNOS5_IRQ_EINT15,
+};
+static inline void exynos_irq_eint_mask(struct irq_data *data)
+{
+ u32 mask;
+
+ spin_lock(&eint_lock);
+ mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
+ mask |= EINT_OFFSET_BIT(data->irq);
+ __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
+ spin_unlock(&eint_lock);
+}
+
+static void exynos_irq_eint_unmask(struct irq_data *data)
+{
+ u32 mask;
+
+ spin_lock(&eint_lock);
+ mask = __raw_readl(EINT_MASK(exynos_eint_base, data->irq));
+ mask &= ~(EINT_OFFSET_BIT(data->irq));
+ __raw_writel(mask, EINT_MASK(exynos_eint_base, data->irq));
+ spin_unlock(&eint_lock);
+}
+
+static inline void exynos_irq_eint_ack(struct irq_data *data)
+{
+ __raw_writel(EINT_OFFSET_BIT(data->irq),
+ EINT_PEND(exynos_eint_base, data->irq));
+}
+
+static void exynos_irq_eint_maskack(struct irq_data *data)
+{
+ exynos_irq_eint_mask(data);
+ exynos_irq_eint_ack(data);
+}
+
+static int exynos_irq_eint_set_type(struct irq_data *data, unsigned int type)
+{
+ int offs = EINT_OFFSET(data->irq);
+ int shift;
+ u32 ctrl, mask;
+ u32 newvalue = 0;
+
+ switch (type) {
+ case IRQ_TYPE_EDGE_RISING:
+ newvalue = S5P_IRQ_TYPE_EDGE_RISING;
+ break;
+
+ case IRQ_TYPE_EDGE_FALLING:
+ newvalue = S5P_IRQ_TYPE_EDGE_FALLING;
+ break;
+
+ case IRQ_TYPE_EDGE_BOTH:
+ newvalue = S5P_IRQ_TYPE_EDGE_BOTH;
+ break;
+
+ case IRQ_TYPE_LEVEL_LOW:
+ newvalue = S5P_IRQ_TYPE_LEVEL_LOW;
+ break;
+
+ case IRQ_TYPE_LEVEL_HIGH:
+ newvalue = S5P_IRQ_TYPE_LEVEL_HIGH;
+ break;
+
+ default:
+ printk(KERN_ERR "No such irq type %d", type);
+ return -EINVAL;
+ }
+
+ shift = (offs & 0x7) * 4;
+ mask = 0x7 << shift;
+
+ spin_lock(&eint_lock);
+ ctrl = __raw_readl(EINT_CON(exynos_eint_base, data->irq));
+ ctrl &= ~mask;
+ ctrl |= newvalue << shift;
+ __raw_writel(ctrl, EINT_CON(exynos_eint_base, data->irq));
+ spin_unlock(&eint_lock);
+
+ if (soc_is_exynos5250())
+ s3c_gpio_cfgpin(exynos5_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
+ else
+ s3c_gpio_cfgpin(exynos4_irq_to_gpio(data->irq), S3C_GPIO_SFN(0xf));
+
+ return 0;
+}
+
+static struct irq_chip exynos_irq_eint = {
+ .name = "exynos-eint",
+ .irq_mask = exynos_irq_eint_mask,
+ .irq_unmask = exynos_irq_eint_unmask,
+ .irq_mask_ack = exynos_irq_eint_maskack,
+ .irq_ack = exynos_irq_eint_ack,
+ .irq_set_type = exynos_irq_eint_set_type,
+#ifdef CONFIG_PM
+ .irq_set_wake = s3c_irqext_wake,
+#endif
+};
+
+/*
+ * exynos4_irq_demux_eint
+ *
+ * This function demuxes the IRQ from from EINTs 16 to 31.
+ * It is designed to be inlined into the specific handler
+ * s5p_irq_demux_eintX_Y.
+ *
+ * Each EINT pend/mask registers handle eight of them.
+ */
+static inline void exynos_irq_demux_eint(unsigned int start)
+{
+ unsigned int irq;
+
+ u32 status = __raw_readl(EINT_PEND(exynos_eint_base, start));
+ u32 mask = __raw_readl(EINT_MASK(exynos_eint_base, start));
+
+ status &= ~mask;
+ status &= 0xff;
+
+ while (status) {
+ irq = fls(status) - 1;
+ generic_handle_irq(irq + start);
+ status &= ~(1 << irq);
+ }
+}
+
+static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc)
+{
+ struct irq_chip *chip = irq_get_chip(irq);
+ chained_irq_enter(chip, desc);
+ exynos_irq_demux_eint(IRQ_EINT(16));
+ exynos_irq_demux_eint(IRQ_EINT(24));
+ chained_irq_exit(chip, desc);
+}
+
+static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
+{
+ u32 *irq_data = irq_get_handler_data(irq);
+ struct irq_chip *chip = irq_get_chip(irq);
+
+ chained_irq_enter(chip, desc);
+ chip->irq_mask(&desc->irq_data);
+
+ if (chip->irq_ack)
+ chip->irq_ack(&desc->irq_data);
+
+ generic_handle_irq(*irq_data);
+
+ chip->irq_unmask(&desc->irq_data);
+ chained_irq_exit(chip, desc);
+}
+
+static int __init exynos_init_irq_eint(void)
+{
+ int irq;
+
+ if (soc_is_exynos5250())
+ exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
+ else
+ exynos_eint_base = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
+
+ if (exynos_eint_base == NULL) {
+ pr_err("unable to ioremap for EINT base address\n");
+ return -ENOMEM;
+ }
+
+ for (irq = 0 ; irq <= 31 ; irq++) {
+ irq_set_chip_and_handler(IRQ_EINT(irq), &exynos_irq_eint,
+ handle_level_irq);
+ set_irq_flags(IRQ_EINT(irq), IRQF_VALID);
+ }
+
+ irq_set_chained_handler(EXYNOS_IRQ_EINT16_31, exynos_irq_demux_eint16_31);
+
+ for (irq = 0 ; irq <= 15 ; irq++) {
+ eint0_15_data[irq] = IRQ_EINT(irq);
+
+ if (soc_is_exynos5250()) {
+ irq_set_handler_data(exynos5_eint0_15_src_int[irq],
+ &eint0_15_data[irq]);
+ irq_set_chained_handler(exynos5_eint0_15_src_int[irq],
+ exynos_irq_eint0_15);
+ } else {
+ irq_set_handler_data(exynos4_eint0_15_src_int[irq],
+ &eint0_15_data[irq]);
+ irq_set_chained_handler(exynos4_eint0_15_src_int[irq],
+ exynos_irq_eint0_15);
+ }
+ }
+
+ return 0;
+}
+arch_initcall(exynos_init_irq_eint);