Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 1 | /* linux/arch/arm/mach-exynos4/cpu.c |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 2 | * |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 3 | * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/sched.h> |
| 12 | #include <linux/sysdev.h> |
| 13 | |
| 14 | #include <asm/mach/map.h> |
| 15 | #include <asm/mach/irq.h> |
| 16 | |
| 17 | #include <asm/proc-fns.h> |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 18 | #include <asm/hardware/cache-l2x0.h> |
Changhwan Youn | aab74d3 | 2011-07-16 10:49:51 +0900 | [diff] [blame] | 19 | #include <asm/hardware/gic.h> |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 20 | |
| 21 | #include <plat/cpu.h> |
| 22 | #include <plat/clock.h> |
MyungJoo Ham | 0e9e526 | 2011-07-20 21:08:18 +0900 | [diff] [blame] | 23 | #include <plat/devs.h> |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 24 | #include <plat/exynos4.h> |
MyungJoo Ham | 0e9e526 | 2011-07-20 21:08:18 +0900 | [diff] [blame] | 25 | #include <plat/adc-core.h> |
Hyuk Lee | 1036c3a | 2010-10-05 19:07:41 +0900 | [diff] [blame] | 26 | #include <plat/sdhci.h> |
Jonghun Han | e61b170 | 2011-07-21 15:46:26 +0900 | [diff] [blame] | 27 | #include <plat/fb-core.h> |
Sylwester Nawrocki | 604eefe | 2011-03-12 08:58:01 +0900 | [diff] [blame] | 28 | #include <plat/fimc-core.h> |
Sylwester Nawrocki | 5f27275 | 2011-07-06 16:04:09 +0900 | [diff] [blame] | 29 | #include <plat/iic-core.h> |
Kyungmin Park | d2edddf | 2011-08-19 20:25:05 +0900 | [diff] [blame] | 30 | #include <plat/reset.h> |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 31 | |
| 32 | #include <mach/regs-irq.h> |
Kyungmin Park | d2edddf | 2011-08-19 20:25:05 +0900 | [diff] [blame] | 33 | #include <mach/regs-pmu.h> |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 34 | |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 35 | extern int combiner_init(unsigned int combiner_nr, void __iomem *base, |
| 36 | unsigned int irq_start); |
| 37 | extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq); |
| 38 | |
| 39 | /* Initial IO mappings */ |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 40 | static struct map_desc exynos4_iodesc[] __initdata = { |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 41 | { |
Changhwan Youn | 2b74015 | 2011-03-11 10:39:35 +0900 | [diff] [blame] | 42 | .virtual = (unsigned long)S5P_VA_SYSTIMER, |
| 43 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER), |
| 44 | .length = SZ_4K, |
| 45 | .type = MT_DEVICE, |
| 46 | }, { |
Changhwan Youn | 766211e | 2010-08-27 17:57:44 +0900 | [diff] [blame] | 47 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 48 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM), |
Changhwan Youn | 766211e | 2010-08-27 17:57:44 +0900 | [diff] [blame] | 49 | .length = SZ_4K, |
| 50 | .type = MT_DEVICE, |
| 51 | }, { |
Kukjin Kim | c598c47 | 2010-08-18 21:45:49 +0900 | [diff] [blame] | 52 | .virtual = (unsigned long)S5P_VA_CMU, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 53 | .pfn = __phys_to_pfn(EXYNOS4_PA_CMU), |
Kukjin Kim | c598c47 | 2010-08-18 21:45:49 +0900 | [diff] [blame] | 54 | .length = SZ_128K, |
| 55 | .type = MT_DEVICE, |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 56 | }, { |
Changhwan Youn | d6d8b48 | 2010-12-03 17:15:40 +0900 | [diff] [blame] | 57 | .virtual = (unsigned long)S5P_VA_PMU, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 58 | .pfn = __phys_to_pfn(EXYNOS4_PA_PMU), |
Changhwan Youn | d6d8b48 | 2010-12-03 17:15:40 +0900 | [diff] [blame] | 59 | .length = SZ_64K, |
| 60 | .type = MT_DEVICE, |
| 61 | }, { |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 62 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 63 | .pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER), |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 64 | .length = SZ_4K, |
| 65 | .type = MT_DEVICE, |
| 66 | }, { |
| 67 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 68 | .pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI), |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 69 | .length = SZ_8K, |
| 70 | .type = MT_DEVICE, |
| 71 | }, { |
| 72 | .virtual = (unsigned long)S5P_VA_L2CC, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 73 | .pfn = __phys_to_pfn(EXYNOS4_PA_L2CC), |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 74 | .length = SZ_4K, |
| 75 | .type = MT_DEVICE, |
| 76 | }, { |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 77 | .virtual = (unsigned long)S5P_VA_GPIO1, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 78 | .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO1), |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 79 | .length = SZ_4K, |
| 80 | .type = MT_DEVICE, |
| 81 | }, { |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 82 | .virtual = (unsigned long)S5P_VA_GPIO2, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 83 | .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO2), |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 84 | .length = SZ_4K, |
| 85 | .type = MT_DEVICE, |
| 86 | }, { |
| 87 | .virtual = (unsigned long)S5P_VA_GPIO3, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 88 | .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO3), |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 89 | .length = SZ_256, |
| 90 | .type = MT_DEVICE, |
| 91 | }, { |
Sunyoung Kang | dd0b7e2 | 2010-12-22 07:21:17 +0900 | [diff] [blame] | 92 | .virtual = (unsigned long)S5P_VA_DMC0, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 93 | .pfn = __phys_to_pfn(EXYNOS4_PA_DMC0), |
Sunyoung Kang | dd0b7e2 | 2010-12-22 07:21:17 +0900 | [diff] [blame] | 94 | .length = SZ_4K, |
| 95 | .type = MT_DEVICE, |
| 96 | }, { |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 97 | .virtual = (unsigned long)S3C_VA_UART, |
| 98 | .pfn = __phys_to_pfn(S3C_PA_UART), |
| 99 | .length = SZ_512K, |
| 100 | .type = MT_DEVICE, |
Daein Moon | 09596ba | 2010-10-25 16:30:40 +0900 | [diff] [blame] | 101 | }, { |
| 102 | .virtual = (unsigned long)S5P_VA_SROMC, |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 103 | .pfn = __phys_to_pfn(EXYNOS4_PA_SROMC), |
Daein Moon | 09596ba | 2010-10-25 16:30:40 +0900 | [diff] [blame] | 104 | .length = SZ_4K, |
| 105 | .type = MT_DEVICE, |
Joonyoung Shim | 8f1d169 | 2011-04-08 13:22:10 +0900 | [diff] [blame] | 106 | }, { |
Kukjin Kim | 08115a1 | 2011-06-01 15:09:05 -0700 | [diff] [blame] | 107 | .virtual = (unsigned long)S3C_VA_USB_HSPHY, |
Joonyoung Shim | 8f1d169 | 2011-04-08 13:22:10 +0900 | [diff] [blame] | 108 | .pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY), |
| 109 | .length = SZ_4K, |
| 110 | .type = MT_DEVICE, |
Changhwan Youn | eb13f2b | 2011-07-16 10:48:47 +0900 | [diff] [blame] | 111 | }, { |
| 112 | .virtual = (unsigned long)S5P_VA_GIC_CPU, |
| 113 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU), |
| 114 | .length = SZ_64K, |
| 115 | .type = MT_DEVICE, |
| 116 | }, { |
| 117 | .virtual = (unsigned long)S5P_VA_GIC_DIST, |
| 118 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST), |
| 119 | .length = SZ_64K, |
| 120 | .type = MT_DEVICE, |
| 121 | }, |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 122 | }; |
| 123 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 124 | static void exynos4_idle(void) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 125 | { |
| 126 | if (!need_resched()) |
| 127 | cpu_do_idle(); |
| 128 | |
| 129 | local_irq_enable(); |
| 130 | } |
| 131 | |
Kyungmin Park | d2edddf | 2011-08-19 20:25:05 +0900 | [diff] [blame] | 132 | static void exynos4_sw_reset(void) |
| 133 | { |
| 134 | __raw_writel(0x1, S5P_SWRESET); |
| 135 | } |
| 136 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 137 | /* |
| 138 | * exynos4_map_io |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 139 | * |
| 140 | * register the standard cpu IO areas |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 141 | */ |
| 142 | void __init exynos4_map_io(void) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 143 | { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 144 | iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc)); |
Hyuk Lee | 1036c3a | 2010-10-05 19:07:41 +0900 | [diff] [blame] | 145 | |
| 146 | /* initialize device information early */ |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 147 | exynos4_default_sdhci0(); |
| 148 | exynos4_default_sdhci1(); |
| 149 | exynos4_default_sdhci2(); |
| 150 | exynos4_default_sdhci3(); |
Sylwester Nawrocki | 604eefe | 2011-03-12 08:58:01 +0900 | [diff] [blame] | 151 | |
MyungJoo Ham | 0e9e526 | 2011-07-20 21:08:18 +0900 | [diff] [blame] | 152 | s3c_adc_setname("samsung-adc-v3"); |
| 153 | |
Sylwester Nawrocki | 604eefe | 2011-03-12 08:58:01 +0900 | [diff] [blame] | 154 | s3c_fimc_setname(0, "exynos4-fimc"); |
| 155 | s3c_fimc_setname(1, "exynos4-fimc"); |
| 156 | s3c_fimc_setname(2, "exynos4-fimc"); |
| 157 | s3c_fimc_setname(3, "exynos4-fimc"); |
Sylwester Nawrocki | 5f27275 | 2011-07-06 16:04:09 +0900 | [diff] [blame] | 158 | |
| 159 | /* The I2C bus controllers are directly compatible with s3c2440 */ |
| 160 | s3c_i2c0_setname("s3c2440-i2c"); |
| 161 | s3c_i2c1_setname("s3c2440-i2c"); |
| 162 | s3c_i2c2_setname("s3c2440-i2c"); |
Jonghun Han | e61b170 | 2011-07-21 15:46:26 +0900 | [diff] [blame] | 163 | |
| 164 | s5p_fb_setname(0, "exynos4-fb"); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 165 | } |
| 166 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 167 | void __init exynos4_init_clocks(int xtal) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 168 | { |
| 169 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); |
| 170 | |
| 171 | s3c24xx_register_baseclocks(xtal); |
| 172 | s5p_register_clocks(xtal); |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 173 | exynos4_register_clocks(); |
| 174 | exynos4_setup_clocks(); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 175 | } |
| 176 | |
Changhwan Youn | aab74d3 | 2011-07-16 10:49:51 +0900 | [diff] [blame] | 177 | static void exynos4_gic_irq_eoi(struct irq_data *d) |
| 178 | { |
| 179 | struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d); |
| 180 | |
| 181 | gic_data->cpu_base = S5P_VA_GIC_CPU + |
| 182 | (EXYNOS4_GIC_BANK_OFFSET * smp_processor_id()); |
| 183 | } |
| 184 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 185 | void __init exynos4_init_irq(void) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 186 | { |
| 187 | int irq; |
| 188 | |
Changhwan Youn | 069d4e7 | 2011-07-16 10:49:53 +0900 | [diff] [blame] | 189 | gic_init(0, IRQ_SPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU); |
Changhwan Youn | aab74d3 | 2011-07-16 10:49:51 +0900 | [diff] [blame] | 190 | gic_arch_extn.irq_eoi = exynos4_gic_irq_eoi; |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 191 | |
| 192 | for (irq = 0; irq < MAX_COMBINER_NR; irq++) { |
Changhwan Youn | 1f2d6c4 | 2010-11-29 17:04:46 +0900 | [diff] [blame] | 193 | |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 194 | combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), |
| 195 | COMBINER_IRQ(irq, 0)); |
| 196 | combiner_cascade_irq(irq, IRQ_SPI(irq)); |
| 197 | } |
| 198 | |
| 199 | /* The parameters of s5p_init_irq() are for VIC init. |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 200 | * Theses parameters should be NULL and 0 because EXYNOS4 |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 201 | * uses GIC instead of VIC. |
| 202 | */ |
| 203 | s5p_init_irq(NULL, 0); |
| 204 | } |
| 205 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 206 | struct sysdev_class exynos4_sysclass = { |
| 207 | .name = "exynos4-core", |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 208 | }; |
| 209 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 210 | static struct sys_device exynos4_sysdev = { |
| 211 | .cls = &exynos4_sysclass, |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 212 | }; |
| 213 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 214 | static int __init exynos4_core_init(void) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 215 | { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 216 | return sysdev_class_register(&exynos4_sysclass); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 217 | } |
| 218 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 219 | core_initcall(exynos4_core_init); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 220 | |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 221 | #ifdef CONFIG_CACHE_L2X0 |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 222 | static int __init exynos4_l2x0_cache_init(void) |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 223 | { |
| 224 | /* TAG, Data Latency Control: 2cycle */ |
| 225 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL); |
| 226 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL); |
| 227 | |
| 228 | /* L2X0 Prefetch Control */ |
| 229 | __raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL); |
| 230 | |
| 231 | /* L2X0 Power Control */ |
| 232 | __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN, |
| 233 | S5P_VA_L2CC + L2X0_POWER_CTRL); |
| 234 | |
Changhwan Youn | a50eb1c | 2010-11-26 13:21:53 +0900 | [diff] [blame] | 235 | l2x0_init(S5P_VA_L2CC, 0x7C470001, 0xC200ffff); |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 236 | |
| 237 | return 0; |
| 238 | } |
| 239 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 240 | early_initcall(exynos4_l2x0_cache_init); |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 241 | #endif |
| 242 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 243 | int __init exynos4_init(void) |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 244 | { |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 245 | printk(KERN_INFO "EXYNOS4: Initializing architecture\n"); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 246 | |
| 247 | /* set idle function */ |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 248 | pm_idle = exynos4_idle; |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 249 | |
Kyungmin Park | d2edddf | 2011-08-19 20:25:05 +0900 | [diff] [blame] | 250 | /* set sw_reset function */ |
| 251 | s5p_reset_hook = exynos4_sw_reset; |
| 252 | |
Kukjin Kim | 7d30e8b | 2011-02-14 16:33:10 +0900 | [diff] [blame] | 253 | return sysdev_register(&exynos4_sysdev); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 254 | } |