ARM: EXYNOS: Add ARCH_EXYNOS and reorganize arch/arm/mach-exynos
The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has
made for plaforms based on EXYNOS4 SoCs. But since upcoming
Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most
codes in current mach-exynos4, one mach-exynos directory will
be used for them.
This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos)
but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to
avoid changing in driver side.
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/cpu.c b/arch/arm/mach-exynos/cpu.c
new file mode 100644
index 0000000..90ec247
--- /dev/null
+++ b/arch/arm/mach-exynos/cpu.c
@@ -0,0 +1,298 @@
+/* linux/arch/arm/mach-exynos/cpu.c
+ *
+ * Copyright (c) 2010-2011 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 <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
+
+#include <plat/cpu.h>
+#include <plat/clock.h>
+#include <plat/devs.h>
+#include <plat/exynos4.h>
+#include <plat/adc-core.h>
+#include <plat/sdhci.h>
+#include <plat/fb-core.h>
+#include <plat/fimc-core.h>
+#include <plat/iic-core.h>
+#include <plat/reset.h>
+#include <plat/tv-core.h>
+
+#include <mach/regs-irq.h>
+#include <mach/regs-pmu.h>
+
+unsigned int gic_bank_offset __read_mostly;
+
+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 exynos_iodesc[] __initdata = {
+ {
+ .virtual = (unsigned long)S5P_VA_SYSTIMER,
+ .pfn = __phys_to_pfn(EXYNOS_PA_SYSTIMER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_PMU,
+ .pfn = __phys_to_pfn(EXYNOS_PA_PMU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_COMBINER_BASE,
+ .pfn = __phys_to_pfn(EXYNOS_PA_COMBINER),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_CPU,
+ .pfn = __phys_to_pfn(EXYNOS_PA_GIC_CPU),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GIC_DIST,
+ .pfn = __phys_to_pfn(EXYNOS_PA_GIC_DIST),
+ .length = SZ_64K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_UART,
+ .pfn = __phys_to_pfn(S3C_PA_UART),
+ .length = SZ_512K,
+ .type = MT_DEVICE,
+ },
+};
+
+static struct map_desc exynos4_iodesc[] __initdata = {
+ {
+ .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_GPIO1,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO1),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GPIO2,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO2),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_GPIO3,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO3),
+ .length = SZ_256,
+ .type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S5P_VA_DMC0,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
+ .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)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 void exynos_idle(void)
+{
+ if (!need_resched())
+ cpu_do_idle();
+
+ local_irq_enable();
+}
+
+static void exynos4_sw_reset(void)
+{
+ __raw_writel(0x1, S5P_SWRESET);
+}
+
+/*
+ * exynos_map_io
+ *
+ * register the standard cpu IO areas
+ */
+void __init exynos4_map_io(void)
+{
+ iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc));
+ 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");
+
+ /* 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");
+}
+
+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 exynos4_gic_irq_fix_base(struct irq_data *d)
+{
+ struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
+
+ gic_data->cpu_base = S5P_VA_GIC_CPU +
+ (gic_bank_offset * smp_processor_id());
+
+ gic_data->dist_base = S5P_VA_GIC_DIST +
+ (gic_bank_offset * smp_processor_id());
+}
+
+void __init exynos4_init_irq(void)
+{
+ int irq;
+
+ gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
+
+ gic_init(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU);
+ gic_arch_extn.irq_eoi = exynos4_gic_irq_fix_base;
+ gic_arch_extn.irq_unmask = exynos4_gic_irq_fix_base;
+ gic_arch_extn.irq_mask = exynos4_gic_irq_fix_base;
+
+ 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 EXYNOS4
+ * uses GIC instead of VIC.
+ */
+ s5p_init_irq(NULL, 0);
+}
+
+struct sysdev_class exynos4_sysclass = {
+ .name = "exynos4-core",
+};
+
+static struct sys_device exynos4_sysdev = {
+ .cls = &exynos4_sysclass,
+};
+
+static int __init exynos4_core_init(void)
+{
+ return sysdev_class_register(&exynos4_sysclass);
+}
+core_initcall(exynos4_core_init);
+
+#ifdef CONFIG_CACHE_L2X0
+static int __init exynos4_l2x0_cache_init(void)
+{
+ /* TAG, Data Latency Control: 2cycle */
+ __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL);
+
+ if (soc_is_exynos4210())
+ __raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
+ else if (soc_is_exynos4212() || soc_is_exynos4412())
+ __raw_writel(0x120, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL);
+
+ /* L2X0 Prefetch Control */
+ __raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL);
+
+ /* L2X0 Power Control */
+ __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN,
+ S5P_VA_L2CC + L2X0_POWER_CTRL);
+
+ l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff);
+
+ return 0;
+}
+
+early_initcall(exynos4_l2x0_cache_init);
+#endif
+
+int __init exynos_init(void)
+{
+ printk(KERN_INFO "EXYNOS: Initializing architecture\n");
+
+ /* set idle function */
+ pm_idle = exynos_idle;
+
+ /* set sw_reset function */
+ if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
+ s5p_reset_hook = exynos4_sw_reset;
+
+ return sysdev_register(&exynos4_sysdev);
+}