Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 1 | /* linux/arch/arm/mach-s5pv310/cpu.c |
| 2 | * |
| 3 | * Copyright (c) 2010 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com/ |
| 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 | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 19 | |
| 20 | #include <plat/cpu.h> |
| 21 | #include <plat/clock.h> |
| 22 | #include <plat/s5pv310.h> |
Hyuk Lee | 1036c3a | 2010-10-05 19:07:41 +0900 | [diff] [blame] | 23 | #include <plat/sdhci.h> |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 24 | |
| 25 | #include <mach/regs-irq.h> |
| 26 | |
| 27 | void __iomem *gic_cpu_base_addr; |
| 28 | |
| 29 | extern int combiner_init(unsigned int combiner_nr, void __iomem *base, |
| 30 | unsigned int irq_start); |
| 31 | extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq); |
| 32 | |
| 33 | /* Initial IO mappings */ |
| 34 | static struct map_desc s5pv310_iodesc[] __initdata = { |
| 35 | { |
Changhwan Youn | 766211e | 2010-08-27 17:57:44 +0900 | [diff] [blame] | 36 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
| 37 | .pfn = __phys_to_pfn(S5PV310_PA_SYSRAM), |
| 38 | .length = SZ_4K, |
| 39 | .type = MT_DEVICE, |
| 40 | }, { |
Kukjin Kim | c598c47 | 2010-08-18 21:45:49 +0900 | [diff] [blame] | 41 | .virtual = (unsigned long)S5P_VA_CMU, |
| 42 | .pfn = __phys_to_pfn(S5PV310_PA_CMU), |
| 43 | .length = SZ_128K, |
| 44 | .type = MT_DEVICE, |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 45 | }, { |
| 46 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, |
| 47 | .pfn = __phys_to_pfn(S5PV310_PA_COMBINER), |
| 48 | .length = SZ_4K, |
| 49 | .type = MT_DEVICE, |
| 50 | }, { |
| 51 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, |
| 52 | .pfn = __phys_to_pfn(S5PV310_PA_COREPERI), |
| 53 | .length = SZ_8K, |
| 54 | .type = MT_DEVICE, |
| 55 | }, { |
| 56 | .virtual = (unsigned long)S5P_VA_L2CC, |
| 57 | .pfn = __phys_to_pfn(S5PV310_PA_L2CC), |
| 58 | .length = SZ_4K, |
| 59 | .type = MT_DEVICE, |
| 60 | }, { |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 61 | .virtual = (unsigned long)S5P_VA_GPIO1, |
Kukjin Kim | fe0cdec | 2010-09-09 21:57:29 +0900 | [diff] [blame] | 62 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO1), |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 63 | .length = SZ_4K, |
| 64 | .type = MT_DEVICE, |
| 65 | }, { |
Jongpill Lee | 37ea63b | 2010-10-14 15:46:18 +0900 | [diff] [blame] | 66 | .virtual = (unsigned long)S5P_VA_GPIO2, |
| 67 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO2), |
| 68 | .length = SZ_4K, |
| 69 | .type = MT_DEVICE, |
| 70 | }, { |
| 71 | .virtual = (unsigned long)S5P_VA_GPIO3, |
| 72 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO3), |
| 73 | .length = SZ_256, |
| 74 | .type = MT_DEVICE, |
| 75 | }, { |
Kukjin Kim | 19a2c06 | 2010-08-31 16:30:51 +0900 | [diff] [blame] | 76 | .virtual = (unsigned long)S3C_VA_UART, |
| 77 | .pfn = __phys_to_pfn(S3C_PA_UART), |
| 78 | .length = SZ_512K, |
| 79 | .type = MT_DEVICE, |
Daein Moon | 09596ba | 2010-10-25 16:30:40 +0900 | [diff] [blame] | 80 | }, { |
| 81 | .virtual = (unsigned long)S5P_VA_SROMC, |
| 82 | .pfn = __phys_to_pfn(S5PV310_PA_SROMC), |
| 83 | .length = SZ_4K, |
| 84 | .type = MT_DEVICE, |
Changhwan Youn | 766211e | 2010-08-27 17:57:44 +0900 | [diff] [blame] | 85 | }, |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | static void s5pv310_idle(void) |
| 89 | { |
| 90 | if (!need_resched()) |
| 91 | cpu_do_idle(); |
| 92 | |
| 93 | local_irq_enable(); |
| 94 | } |
| 95 | |
| 96 | /* s5pv310_map_io |
| 97 | * |
| 98 | * register the standard cpu IO areas |
| 99 | */ |
| 100 | void __init s5pv310_map_io(void) |
| 101 | { |
| 102 | iotable_init(s5pv310_iodesc, ARRAY_SIZE(s5pv310_iodesc)); |
Hyuk Lee | 1036c3a | 2010-10-05 19:07:41 +0900 | [diff] [blame] | 103 | |
| 104 | /* initialize device information early */ |
| 105 | s5pv310_default_sdhci0(); |
| 106 | s5pv310_default_sdhci1(); |
| 107 | s5pv310_default_sdhci2(); |
| 108 | s5pv310_default_sdhci3(); |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | void __init s5pv310_init_clocks(int xtal) |
| 112 | { |
| 113 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); |
| 114 | |
| 115 | s3c24xx_register_baseclocks(xtal); |
| 116 | s5p_register_clocks(xtal); |
| 117 | s5pv310_register_clocks(); |
| 118 | s5pv310_setup_clocks(); |
| 119 | } |
| 120 | |
| 121 | void __init s5pv310_init_irq(void) |
| 122 | { |
| 123 | int irq; |
| 124 | |
| 125 | gic_cpu_base_addr = S5P_VA_GIC_CPU; |
| 126 | gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER); |
| 127 | gic_cpu_init(0, S5P_VA_GIC_CPU); |
| 128 | |
| 129 | for (irq = 0; irq < MAX_COMBINER_NR; irq++) { |
| 130 | combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), |
| 131 | COMBINER_IRQ(irq, 0)); |
| 132 | combiner_cascade_irq(irq, IRQ_SPI(irq)); |
| 133 | } |
| 134 | |
| 135 | /* The parameters of s5p_init_irq() are for VIC init. |
| 136 | * Theses parameters should be NULL and 0 because S5PV310 |
| 137 | * uses GIC instead of VIC. |
| 138 | */ |
| 139 | s5p_init_irq(NULL, 0); |
| 140 | } |
| 141 | |
| 142 | struct sysdev_class s5pv310_sysclass = { |
| 143 | .name = "s5pv310-core", |
| 144 | }; |
| 145 | |
| 146 | static struct sys_device s5pv310_sysdev = { |
| 147 | .cls = &s5pv310_sysclass, |
| 148 | }; |
| 149 | |
| 150 | static int __init s5pv310_core_init(void) |
| 151 | { |
| 152 | return sysdev_class_register(&s5pv310_sysclass); |
| 153 | } |
| 154 | |
| 155 | core_initcall(s5pv310_core_init); |
| 156 | |
Kyungmin Park | 1cf0eb7 | 2010-10-21 15:22:36 +0900 | [diff] [blame] | 157 | #ifdef CONFIG_CACHE_L2X0 |
| 158 | static int __init s5pv310_l2x0_cache_init(void) |
| 159 | { |
| 160 | /* TAG, Data Latency Control: 2cycle */ |
| 161 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL); |
| 162 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL); |
| 163 | |
| 164 | /* L2X0 Prefetch Control */ |
| 165 | __raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL); |
| 166 | |
| 167 | /* L2X0 Power Control */ |
| 168 | __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN, |
| 169 | S5P_VA_L2CC + L2X0_POWER_CTRL); |
| 170 | |
| 171 | l2x0_init(S5P_VA_L2CC, 0x7C070001, 0xC200ffff); |
| 172 | |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | early_initcall(s5pv310_l2x0_cache_init); |
| 177 | #endif |
| 178 | |
Changhwan Youn | 2b12b5c | 2010-07-26 21:08:52 +0900 | [diff] [blame] | 179 | int __init s5pv310_init(void) |
| 180 | { |
| 181 | printk(KERN_INFO "S5PV310: Initializing architecture\n"); |
| 182 | |
| 183 | /* set idle function */ |
| 184 | pm_idle = s5pv310_idle; |
| 185 | |
| 186 | return sysdev_register(&s5pv310_sysdev); |
| 187 | } |