Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 1 | /* |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 2 | * SAMSUNG EXYNOS Flattened Device Tree enabled machine |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 3 | * |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 4 | * Copyright (c) 2010-2014 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 12 | #include <linux/init.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 13 | #include <linux/io.h> |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 14 | #include <linux/kernel.h> |
Tushar Behera | 334a1c7 | 2014-02-14 10:32:45 +0900 | [diff] [blame] | 15 | #include <linux/serial_s3c.h> |
Arnd Bergmann | 237c78b | 2012-01-07 12:30:20 +0000 | [diff] [blame] | 16 | #include <linux/of.h> |
Thomas Abraham | e873a47 | 2012-05-15 16:25:23 +0900 | [diff] [blame] | 17 | #include <linux/of_address.h> |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 18 | #include <linux/of_fdt.h> |
| 19 | #include <linux/of_platform.h> |
Bartlomiej Zolnierkiewicz | 35baa33 | 2013-08-30 12:15:04 +0200 | [diff] [blame] | 20 | #include <linux/platform_device.h> |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 21 | #include <linux/pm_domain.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 22 | |
Amit Daniel Kachhap | b756a50 | 2012-03-08 02:07:41 -0800 | [diff] [blame] | 23 | #include <asm/cacheflush.h> |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 24 | #include <asm/hardware/cache-l2x0.h> |
| 25 | #include <asm/mach/arch.h> |
| 26 | #include <asm/mach/map.h> |
| 27 | #include <asm/memory.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 28 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 29 | #include <plat/cpu.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 30 | |
| 31 | #include "common.h" |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 32 | #include "mfc.h" |
Kukjin Kim | 65c9a85 | 2013-12-19 04:06:56 +0900 | [diff] [blame] | 33 | #include "regs-pmu.h" |
| 34 | |
Amit Daniel Kachhap | 6cdeddc | 2012-03-08 02:09:12 -0800 | [diff] [blame] | 35 | #define L2_AUX_VAL 0x7C470001 |
| 36 | #define L2_AUX_MASK 0xC200ffff |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 37 | |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 38 | static struct map_desc exynos4_iodesc[] __initdata = { |
| 39 | { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 40 | .virtual = (unsigned long)S3C_VA_SYS, |
| 41 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSCON), |
| 42 | .length = SZ_64K, |
| 43 | .type = MT_DEVICE, |
| 44 | }, { |
| 45 | .virtual = (unsigned long)S3C_VA_TIMER, |
| 46 | .pfn = __phys_to_pfn(EXYNOS4_PA_TIMER), |
| 47 | .length = SZ_16K, |
| 48 | .type = MT_DEVICE, |
| 49 | }, { |
| 50 | .virtual = (unsigned long)S3C_VA_WATCHDOG, |
| 51 | .pfn = __phys_to_pfn(EXYNOS4_PA_WATCHDOG), |
| 52 | .length = SZ_4K, |
| 53 | .type = MT_DEVICE, |
| 54 | }, { |
| 55 | .virtual = (unsigned long)S5P_VA_SROMC, |
| 56 | .pfn = __phys_to_pfn(EXYNOS4_PA_SROMC), |
| 57 | .length = SZ_4K, |
| 58 | .type = MT_DEVICE, |
| 59 | }, { |
| 60 | .virtual = (unsigned long)S5P_VA_SYSTIMER, |
| 61 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER), |
| 62 | .length = SZ_4K, |
| 63 | .type = MT_DEVICE, |
| 64 | }, { |
| 65 | .virtual = (unsigned long)S5P_VA_PMU, |
| 66 | .pfn = __phys_to_pfn(EXYNOS4_PA_PMU), |
| 67 | .length = SZ_64K, |
| 68 | .type = MT_DEVICE, |
| 69 | }, { |
| 70 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, |
| 71 | .pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER), |
| 72 | .length = SZ_4K, |
| 73 | .type = MT_DEVICE, |
| 74 | }, { |
| 75 | .virtual = (unsigned long)S5P_VA_GIC_CPU, |
| 76 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU), |
| 77 | .length = SZ_64K, |
| 78 | .type = MT_DEVICE, |
| 79 | }, { |
| 80 | .virtual = (unsigned long)S5P_VA_GIC_DIST, |
| 81 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST), |
| 82 | .length = SZ_64K, |
| 83 | .type = MT_DEVICE, |
| 84 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 85 | .virtual = (unsigned long)S5P_VA_CMU, |
| 86 | .pfn = __phys_to_pfn(EXYNOS4_PA_CMU), |
| 87 | .length = SZ_128K, |
| 88 | .type = MT_DEVICE, |
| 89 | }, { |
| 90 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, |
| 91 | .pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI), |
| 92 | .length = SZ_8K, |
| 93 | .type = MT_DEVICE, |
| 94 | }, { |
| 95 | .virtual = (unsigned long)S5P_VA_L2CC, |
| 96 | .pfn = __phys_to_pfn(EXYNOS4_PA_L2CC), |
| 97 | .length = SZ_4K, |
| 98 | .type = MT_DEVICE, |
| 99 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 100 | .virtual = (unsigned long)S5P_VA_DMC0, |
| 101 | .pfn = __phys_to_pfn(EXYNOS4_PA_DMC0), |
MyungJoo Ham | 2bde0b0 | 2011-12-01 15:12:30 +0900 | [diff] [blame] | 102 | .length = SZ_64K, |
| 103 | .type = MT_DEVICE, |
| 104 | }, { |
| 105 | .virtual = (unsigned long)S5P_VA_DMC1, |
| 106 | .pfn = __phys_to_pfn(EXYNOS4_PA_DMC1), |
| 107 | .length = SZ_64K, |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 108 | .type = MT_DEVICE, |
| 109 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 110 | .virtual = (unsigned long)S3C_VA_USB_HSPHY, |
| 111 | .pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY), |
| 112 | .length = SZ_4K, |
| 113 | .type = MT_DEVICE, |
| 114 | }, |
| 115 | }; |
| 116 | |
| 117 | static struct map_desc exynos4_iodesc0[] __initdata = { |
| 118 | { |
| 119 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
| 120 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0), |
| 121 | .length = SZ_4K, |
| 122 | .type = MT_DEVICE, |
| 123 | }, |
| 124 | }; |
| 125 | |
| 126 | static struct map_desc exynos4_iodesc1[] __initdata = { |
| 127 | { |
| 128 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
| 129 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1), |
| 130 | .length = SZ_4K, |
| 131 | .type = MT_DEVICE, |
| 132 | }, |
| 133 | }; |
| 134 | |
Tomasz Figa | 41de898 | 2012-12-11 13:58:43 +0900 | [diff] [blame] | 135 | static struct map_desc exynos4210_iodesc[] __initdata = { |
| 136 | { |
| 137 | .virtual = (unsigned long)S5P_VA_SYSRAM_NS, |
| 138 | .pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS), |
| 139 | .length = SZ_4K, |
| 140 | .type = MT_DEVICE, |
| 141 | }, |
| 142 | }; |
| 143 | |
| 144 | static struct map_desc exynos4x12_iodesc[] __initdata = { |
| 145 | { |
| 146 | .virtual = (unsigned long)S5P_VA_SYSRAM_NS, |
| 147 | .pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS), |
| 148 | .length = SZ_4K, |
| 149 | .type = MT_DEVICE, |
| 150 | }, |
| 151 | }; |
| 152 | |
| 153 | static struct map_desc exynos5250_iodesc[] __initdata = { |
| 154 | { |
| 155 | .virtual = (unsigned long)S5P_VA_SYSRAM_NS, |
| 156 | .pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS), |
| 157 | .length = SZ_4K, |
| 158 | .type = MT_DEVICE, |
| 159 | }, |
| 160 | }; |
| 161 | |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 162 | static struct map_desc exynos5_iodesc[] __initdata = { |
| 163 | { |
| 164 | .virtual = (unsigned long)S3C_VA_SYS, |
| 165 | .pfn = __phys_to_pfn(EXYNOS5_PA_SYSCON), |
| 166 | .length = SZ_64K, |
| 167 | .type = MT_DEVICE, |
| 168 | }, { |
| 169 | .virtual = (unsigned long)S3C_VA_TIMER, |
| 170 | .pfn = __phys_to_pfn(EXYNOS5_PA_TIMER), |
| 171 | .length = SZ_16K, |
| 172 | .type = MT_DEVICE, |
| 173 | }, { |
| 174 | .virtual = (unsigned long)S3C_VA_WATCHDOG, |
| 175 | .pfn = __phys_to_pfn(EXYNOS5_PA_WATCHDOG), |
| 176 | .length = SZ_4K, |
| 177 | .type = MT_DEVICE, |
| 178 | }, { |
| 179 | .virtual = (unsigned long)S5P_VA_SROMC, |
| 180 | .pfn = __phys_to_pfn(EXYNOS5_PA_SROMC), |
| 181 | .length = SZ_4K, |
| 182 | .type = MT_DEVICE, |
| 183 | }, { |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 184 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
| 185 | .pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM), |
| 186 | .length = SZ_4K, |
| 187 | .type = MT_DEVICE, |
| 188 | }, { |
| 189 | .virtual = (unsigned long)S5P_VA_CMU, |
| 190 | .pfn = __phys_to_pfn(EXYNOS5_PA_CMU), |
| 191 | .length = 144 * SZ_1K, |
| 192 | .type = MT_DEVICE, |
| 193 | }, { |
| 194 | .virtual = (unsigned long)S5P_VA_PMU, |
| 195 | .pfn = __phys_to_pfn(EXYNOS5_PA_PMU), |
| 196 | .length = SZ_64K, |
| 197 | .type = MT_DEVICE, |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 198 | }, |
| 199 | }; |
| 200 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 201 | void exynos_restart(enum reboot_mode mode, const char *cmd) |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 202 | { |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 203 | struct device_node *np; |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 204 | u32 val = 0x1; |
| 205 | void __iomem *addr = EXYNOS_SWRESET; |
Chander Kashyap | eff4e7c | 2013-06-19 00:29:35 +0900 | [diff] [blame] | 206 | |
| 207 | if (of_machine_is_compatible("samsung,exynos5440")) { |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 208 | u32 status; |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 209 | np = of_find_compatible_node(NULL, NULL, "samsung,exynos5440-clock"); |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 210 | |
| 211 | addr = of_iomap(np, 0) + 0xbc; |
| 212 | status = __raw_readl(addr); |
| 213 | |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 214 | addr = of_iomap(np, 0) + 0xcc; |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 215 | val = __raw_readl(addr); |
| 216 | |
| 217 | val = (val & 0xffff0000) | (status & 0xffff); |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | __raw_writel(val, addr); |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 221 | } |
| 222 | |
Bartlomiej Zolnierkiewicz | 35baa33 | 2013-08-30 12:15:04 +0200 | [diff] [blame] | 223 | static struct platform_device exynos_cpuidle = { |
| 224 | .name = "exynos_cpuidle", |
| 225 | .id = -1, |
| 226 | }; |
| 227 | |
| 228 | void __init exynos_cpuidle_init(void) |
| 229 | { |
| 230 | platform_device_register(&exynos_cpuidle); |
| 231 | } |
| 232 | |
Lukasz Majewski | d568b6f | 2013-11-28 13:42:42 +0100 | [diff] [blame] | 233 | void __init exynos_cpufreq_init(void) |
| 234 | { |
| 235 | platform_device_register_simple("exynos-cpufreq", -1, NULL, 0); |
| 236 | } |
| 237 | |
Shawn Guo | bb13fab | 2012-04-26 10:35:40 +0800 | [diff] [blame] | 238 | void __init exynos_init_late(void) |
| 239 | { |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 240 | if (of_machine_is_compatible("samsung,exynos5440")) |
| 241 | /* to be supported later */ |
| 242 | return; |
| 243 | |
Sylwester Nawrocki | 1fd3cbc | 2013-12-21 06:33:30 +0900 | [diff] [blame] | 244 | pm_genpd_poweroff_unused(); |
Tomasz Figa | 559ba23 | 2014-03-18 07:28:22 +0900 | [diff] [blame] | 245 | exynos_pm_init(); |
Shawn Guo | bb13fab | 2012-04-26 10:35:40 +0800 | [diff] [blame] | 246 | } |
| 247 | |
Arnd Bergmann | 564d06b | 2013-06-19 01:36:56 +0900 | [diff] [blame] | 248 | static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname, |
Thomas Abraham | f5f83c7 | 2013-04-23 22:46:53 +0900 | [diff] [blame] | 249 | int depth, void *data) |
| 250 | { |
| 251 | struct map_desc iodesc; |
| 252 | __be32 *reg; |
| 253 | unsigned long len; |
| 254 | |
| 255 | if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") && |
| 256 | !of_flat_dt_is_compatible(node, "samsung,exynos5440-clock")) |
| 257 | return 0; |
| 258 | |
| 259 | reg = of_get_flat_dt_prop(node, "reg", &len); |
| 260 | if (reg == NULL || len != (sizeof(unsigned long) * 2)) |
| 261 | return 0; |
| 262 | |
| 263 | iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); |
| 264 | iodesc.length = be32_to_cpu(reg[1]) - 1; |
| 265 | iodesc.virtual = (unsigned long)S5P_VA_CHIPID; |
| 266 | iodesc.type = MT_DEVICE; |
| 267 | iotable_init(&iodesc, 1); |
| 268 | return 1; |
| 269 | } |
Thomas Abraham | f5f83c7 | 2013-04-23 22:46:53 +0900 | [diff] [blame] | 270 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 271 | /* |
| 272 | * exynos_map_io |
| 273 | * |
| 274 | * register the standard cpu IO areas |
| 275 | */ |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 276 | static void __init exynos_map_io(void) |
| 277 | { |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 278 | if (soc_is_exynos4()) |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 279 | iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc)); |
| 280 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 281 | if (soc_is_exynos5()) |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 282 | iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); |
| 283 | |
| 284 | if (soc_is_exynos4210()) { |
| 285 | if (samsung_rev() == EXYNOS4210_REV_0) |
| 286 | iotable_init(exynos4_iodesc0, |
| 287 | ARRAY_SIZE(exynos4_iodesc0)); |
| 288 | else |
| 289 | iotable_init(exynos4_iodesc1, |
| 290 | ARRAY_SIZE(exynos4_iodesc1)); |
| 291 | iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc)); |
| 292 | } |
| 293 | if (soc_is_exynos4212() || soc_is_exynos4412()) |
| 294 | iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc)); |
| 295 | if (soc_is_exynos5250()) |
| 296 | iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc)); |
| 297 | } |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 298 | |
Arnd Bergmann | 0e2238e | 2013-06-19 01:36:47 +0900 | [diff] [blame] | 299 | void __init exynos_init_io(void) |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 300 | { |
Doug Anderson | 9c1fcdc | 2013-06-05 13:56:33 -0700 | [diff] [blame] | 301 | debug_ll_io_init(); |
| 302 | |
Tomasz Figa | 04fae59 | 2013-06-15 09:13:25 +0900 | [diff] [blame] | 303 | of_scan_flat_dt(exynos_fdt_map_chipid, NULL); |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 304 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 305 | /* detect cpu id and rev. */ |
| 306 | s5p_init_cpu(S5P_VA_CHIPID); |
| 307 | |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 308 | exynos_map_io(); |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 309 | } |
| 310 | |
Thomas Abraham | 9ee6af9 | 2012-05-15 15:47:40 +0900 | [diff] [blame] | 311 | struct bus_type exynos_subsys = { |
| 312 | .name = "exynos-core", |
| 313 | .dev_name = "exynos-core", |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 314 | }; |
| 315 | |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 316 | static int __init exynos_core_init(void) |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 317 | { |
Thomas Abraham | 9ee6af9 | 2012-05-15 15:47:40 +0900 | [diff] [blame] | 318 | return subsys_system_register(&exynos_subsys, NULL); |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 319 | } |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 320 | core_initcall(exynos_core_init); |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 321 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 322 | static int __init exynos4_l2x0_cache_init(void) |
| 323 | { |
Il Han | e1b1994 | 2012-04-05 07:59:36 -0700 | [diff] [blame] | 324 | int ret; |
| 325 | |
Amit Daniel Kachhap | 6cdeddc | 2012-03-08 02:09:12 -0800 | [diff] [blame] | 326 | ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK); |
Arnd Bergmann | 87107d8 | 2013-06-19 01:36:52 +0900 | [diff] [blame] | 327 | if (ret) |
| 328 | return ret; |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 329 | |
Arnd Bergmann | 39378e4 | 2014-03-13 17:25:52 +0100 | [diff] [blame] | 330 | if (IS_ENABLED(CONFIG_S5P_SLEEP)) { |
| 331 | l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs); |
| 332 | clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long)); |
| 333 | } |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 334 | return 0; |
| 335 | } |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 336 | early_initcall(exynos4_l2x0_cache_init); |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 337 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 338 | static void __init exynos_dt_machine_init(void) |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 339 | { |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 340 | struct device_node *i2c_np; |
| 341 | const char *i2c_compat = "samsung,s3c2440-i2c"; |
| 342 | unsigned int tmp; |
| 343 | int id; |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 344 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 345 | /* |
| 346 | * Exynos5's legacy i2c controller and new high speed i2c |
| 347 | * controller have muxed interrupt sources. By default the |
| 348 | * interrupts for 4-channel HS-I2C controller are enabled. |
| 349 | * If node for first four channels of legacy i2c controller |
| 350 | * are available then re-configure the interrupts via the |
| 351 | * system register. |
| 352 | */ |
| 353 | if (soc_is_exynos5()) { |
| 354 | for_each_compatible_node(i2c_np, NULL, i2c_compat) { |
| 355 | if (of_device_is_available(i2c_np)) { |
| 356 | id = of_alias_get_id(i2c_np, "i2c"); |
| 357 | if (id < 4) { |
| 358 | tmp = readl(EXYNOS5_SYS_I2C_CFG); |
| 359 | writel(tmp & ~(0x1 << id), |
| 360 | EXYNOS5_SYS_I2C_CFG); |
| 361 | } |
| 362 | } |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | exynos_cpuidle_init(); |
| 367 | exynos_cpufreq_init(); |
| 368 | |
| 369 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 370 | } |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 371 | |
| 372 | static char const *exynos_dt_compat[] __initconst = { |
Sachin Kamat | 4868123 | 2014-03-21 02:14:59 +0900 | [diff] [blame] | 373 | "samsung,exynos4", |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 374 | "samsung,exynos4210", |
| 375 | "samsung,exynos4212", |
| 376 | "samsung,exynos4412", |
Sachin Kamat | 4868123 | 2014-03-21 02:14:59 +0900 | [diff] [blame] | 377 | "samsung,exynos5", |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 378 | "samsung,exynos5250", |
| 379 | "samsung,exynos5420", |
| 380 | "samsung,exynos5440", |
| 381 | NULL |
| 382 | }; |
| 383 | |
| 384 | static void __init exynos_reserve(void) |
| 385 | { |
| 386 | #ifdef CONFIG_S5P_DEV_MFC |
| 387 | int i; |
| 388 | char *mfc_mem[] = { |
| 389 | "samsung,mfc-v5", |
| 390 | "samsung,mfc-v6", |
| 391 | "samsung,mfc-v7", |
| 392 | }; |
| 393 | |
| 394 | for (i = 0; i < ARRAY_SIZE(mfc_mem); i++) |
| 395 | if (of_scan_flat_dt(s5p_fdt_alloc_mfc_mem, mfc_mem[i])) |
| 396 | break; |
| 397 | #endif |
| 398 | } |
| 399 | |
| 400 | DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)") |
| 401 | /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */ |
| 402 | /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */ |
| 403 | .smp = smp_ops(exynos_smp_ops), |
| 404 | .map_io = exynos_init_io, |
| 405 | .init_early = exynos_firmware_init, |
| 406 | .init_machine = exynos_dt_machine_init, |
| 407 | .init_late = exynos_init_late, |
| 408 | .dt_compat = exynos_dt_compat, |
| 409 | .restart = exynos_restart, |
| 410 | .reserve = exynos_reserve, |
| 411 | MACHINE_END |