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> |
Pankaj Dubey | fce9e5b | 2014-07-11 08:08:29 +0900 | [diff] [blame] | 22 | #include <linux/irqchip.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 23 | |
Amit Daniel Kachhap | b756a50 | 2012-03-08 02:07:41 -0800 | [diff] [blame] | 24 | #include <asm/cacheflush.h> |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 25 | #include <asm/hardware/cache-l2x0.h> |
| 26 | #include <asm/mach/arch.h> |
| 27 | #include <asm/mach/map.h> |
| 28 | #include <asm/memory.h> |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 29 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 30 | #include "common.h" |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 31 | #include "mfc.h" |
Kukjin Kim | 65c9a85 | 2013-12-19 04:06:56 +0900 | [diff] [blame] | 32 | #include "regs-pmu.h" |
Pankaj Dubey | 318fd20 | 2014-07-08 07:54:08 +0900 | [diff] [blame] | 33 | #include "regs-sys.h" |
Kukjin Kim | 65c9a85 | 2013-12-19 04:06:56 +0900 | [diff] [blame] | 34 | |
Pankaj Dubey | fce9e5b | 2014-07-11 08:08:29 +0900 | [diff] [blame] | 35 | void __iomem *pmu_base_addr; |
Amit Daniel Kachhap | 6cdeddc | 2012-03-08 02:09:12 -0800 | [diff] [blame] | 36 | |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 37 | static struct map_desc exynos4_iodesc[] __initdata = { |
| 38 | { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 39 | .virtual = (unsigned long)S3C_VA_SYS, |
| 40 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSCON), |
| 41 | .length = SZ_64K, |
| 42 | .type = MT_DEVICE, |
| 43 | }, { |
| 44 | .virtual = (unsigned long)S3C_VA_TIMER, |
| 45 | .pfn = __phys_to_pfn(EXYNOS4_PA_TIMER), |
| 46 | .length = SZ_16K, |
| 47 | .type = MT_DEVICE, |
| 48 | }, { |
| 49 | .virtual = (unsigned long)S3C_VA_WATCHDOG, |
| 50 | .pfn = __phys_to_pfn(EXYNOS4_PA_WATCHDOG), |
| 51 | .length = SZ_4K, |
| 52 | .type = MT_DEVICE, |
| 53 | }, { |
| 54 | .virtual = (unsigned long)S5P_VA_SROMC, |
| 55 | .pfn = __phys_to_pfn(EXYNOS4_PA_SROMC), |
| 56 | .length = SZ_4K, |
| 57 | .type = MT_DEVICE, |
| 58 | }, { |
| 59 | .virtual = (unsigned long)S5P_VA_SYSTIMER, |
| 60 | .pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER), |
| 61 | .length = SZ_4K, |
| 62 | .type = MT_DEVICE, |
| 63 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 64 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, |
| 65 | .pfn = __phys_to_pfn(EXYNOS4_PA_COMBINER), |
| 66 | .length = SZ_4K, |
| 67 | .type = MT_DEVICE, |
| 68 | }, { |
| 69 | .virtual = (unsigned long)S5P_VA_GIC_CPU, |
| 70 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_CPU), |
| 71 | .length = SZ_64K, |
| 72 | .type = MT_DEVICE, |
| 73 | }, { |
| 74 | .virtual = (unsigned long)S5P_VA_GIC_DIST, |
| 75 | .pfn = __phys_to_pfn(EXYNOS4_PA_GIC_DIST), |
| 76 | .length = SZ_64K, |
| 77 | .type = MT_DEVICE, |
| 78 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 79 | .virtual = (unsigned long)S5P_VA_CMU, |
| 80 | .pfn = __phys_to_pfn(EXYNOS4_PA_CMU), |
| 81 | .length = SZ_128K, |
| 82 | .type = MT_DEVICE, |
| 83 | }, { |
| 84 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, |
| 85 | .pfn = __phys_to_pfn(EXYNOS4_PA_COREPERI), |
| 86 | .length = SZ_8K, |
| 87 | .type = MT_DEVICE, |
| 88 | }, { |
| 89 | .virtual = (unsigned long)S5P_VA_L2CC, |
| 90 | .pfn = __phys_to_pfn(EXYNOS4_PA_L2CC), |
| 91 | .length = SZ_4K, |
| 92 | .type = MT_DEVICE, |
| 93 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 94 | .virtual = (unsigned long)S5P_VA_DMC0, |
| 95 | .pfn = __phys_to_pfn(EXYNOS4_PA_DMC0), |
MyungJoo Ham | 2bde0b0 | 2011-12-01 15:12:30 +0900 | [diff] [blame] | 96 | .length = SZ_64K, |
| 97 | .type = MT_DEVICE, |
| 98 | }, { |
| 99 | .virtual = (unsigned long)S5P_VA_DMC1, |
| 100 | .pfn = __phys_to_pfn(EXYNOS4_PA_DMC1), |
| 101 | .length = SZ_64K, |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 102 | .type = MT_DEVICE, |
| 103 | }, { |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 104 | .virtual = (unsigned long)S3C_VA_USB_HSPHY, |
| 105 | .pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY), |
| 106 | .length = SZ_4K, |
| 107 | .type = MT_DEVICE, |
| 108 | }, |
| 109 | }; |
| 110 | |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 111 | static struct map_desc exynos5_iodesc[] __initdata = { |
| 112 | { |
| 113 | .virtual = (unsigned long)S3C_VA_SYS, |
| 114 | .pfn = __phys_to_pfn(EXYNOS5_PA_SYSCON), |
| 115 | .length = SZ_64K, |
| 116 | .type = MT_DEVICE, |
| 117 | }, { |
| 118 | .virtual = (unsigned long)S3C_VA_TIMER, |
| 119 | .pfn = __phys_to_pfn(EXYNOS5_PA_TIMER), |
| 120 | .length = SZ_16K, |
| 121 | .type = MT_DEVICE, |
| 122 | }, { |
| 123 | .virtual = (unsigned long)S3C_VA_WATCHDOG, |
| 124 | .pfn = __phys_to_pfn(EXYNOS5_PA_WATCHDOG), |
| 125 | .length = SZ_4K, |
| 126 | .type = MT_DEVICE, |
| 127 | }, { |
| 128 | .virtual = (unsigned long)S5P_VA_SROMC, |
| 129 | .pfn = __phys_to_pfn(EXYNOS5_PA_SROMC), |
| 130 | .length = SZ_4K, |
| 131 | .type = MT_DEVICE, |
| 132 | }, { |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 133 | .virtual = (unsigned long)S5P_VA_CMU, |
| 134 | .pfn = __phys_to_pfn(EXYNOS5_PA_CMU), |
| 135 | .length = 144 * SZ_1K, |
| 136 | .type = MT_DEVICE, |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 137 | }, |
| 138 | }; |
| 139 | |
Pankaj Dubey | 5e299f6 | 2014-07-08 07:51:11 +0900 | [diff] [blame] | 140 | static void exynos_restart(enum reboot_mode mode, const char *cmd) |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 141 | { |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 142 | struct device_node *np; |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 143 | u32 val = 0x1; |
Pankaj Dubey | 2e94ac4 | 2014-07-19 03:43:22 +0900 | [diff] [blame] | 144 | void __iomem *addr = pmu_base_addr + EXYNOS_SWRESET; |
Chander Kashyap | eff4e7c | 2013-06-19 00:29:35 +0900 | [diff] [blame] | 145 | |
| 146 | if (of_machine_is_compatible("samsung,exynos5440")) { |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 147 | u32 status; |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 148 | np = of_find_compatible_node(NULL, NULL, "samsung,exynos5440-clock"); |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 149 | |
| 150 | addr = of_iomap(np, 0) + 0xbc; |
| 151 | status = __raw_readl(addr); |
| 152 | |
Thomas Abraham | 60db7e5 | 2013-01-24 10:09:13 -0800 | [diff] [blame] | 153 | addr = of_iomap(np, 0) + 0xcc; |
Jungseok Lee | 1ba830c | 2013-05-25 06:33:03 +0900 | [diff] [blame] | 154 | val = __raw_readl(addr); |
| 155 | |
| 156 | val = (val & 0xffff0000) | (status & 0xffff); |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | __raw_writel(val, addr); |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 160 | } |
| 161 | |
Bartlomiej Zolnierkiewicz | 35baa33 | 2013-08-30 12:15:04 +0200 | [diff] [blame] | 162 | static struct platform_device exynos_cpuidle = { |
Daniel Lezcano | 277f504 | 2014-05-09 06:56:29 +0900 | [diff] [blame] | 163 | .name = "exynos_cpuidle", |
Bartlomiej Zolnierkiewicz | 658cff0 | 2014-09-24 02:18:27 +0900 | [diff] [blame] | 164 | #ifdef CONFIG_ARM_EXYNOS_CPUIDLE |
Daniel Lezcano | 277f504 | 2014-05-09 06:56:29 +0900 | [diff] [blame] | 165 | .dev.platform_data = exynos_enter_aftr, |
Bartlomiej Zolnierkiewicz | 658cff0 | 2014-09-24 02:18:27 +0900 | [diff] [blame] | 166 | #endif |
Daniel Lezcano | 277f504 | 2014-05-09 06:56:29 +0900 | [diff] [blame] | 167 | .id = -1, |
Bartlomiej Zolnierkiewicz | 35baa33 | 2013-08-30 12:15:04 +0200 | [diff] [blame] | 168 | }; |
| 169 | |
Olof Johansson | 1754c42 | 2014-06-02 21:47:46 -0700 | [diff] [blame] | 170 | void __iomem *sysram_base_addr; |
| 171 | void __iomem *sysram_ns_base_addr; |
| 172 | |
| 173 | void __init exynos_sysram_init(void) |
| 174 | { |
| 175 | struct device_node *node; |
| 176 | |
| 177 | for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram") { |
| 178 | if (!of_device_is_available(node)) |
| 179 | continue; |
| 180 | sysram_base_addr = of_iomap(node, 0); |
| 181 | break; |
| 182 | } |
| 183 | |
| 184 | for_each_compatible_node(node, NULL, "samsung,exynos4210-sysram-ns") { |
| 185 | if (!of_device_is_available(node)) |
| 186 | continue; |
| 187 | sysram_ns_base_addr = of_iomap(node, 0); |
| 188 | break; |
| 189 | } |
| 190 | } |
| 191 | |
Pankaj Dubey | 5e299f6 | 2014-07-08 07:51:11 +0900 | [diff] [blame] | 192 | static void __init exynos_init_late(void) |
Shawn Guo | bb13fab | 2012-04-26 10:35:40 +0800 | [diff] [blame] | 193 | { |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 194 | if (of_machine_is_compatible("samsung,exynos5440")) |
| 195 | /* to be supported later */ |
| 196 | return; |
| 197 | |
Tomasz Figa | 559ba23 | 2014-03-18 07:28:22 +0900 | [diff] [blame] | 198 | exynos_pm_init(); |
Shawn Guo | bb13fab | 2012-04-26 10:35:40 +0800 | [diff] [blame] | 199 | } |
| 200 | |
Arnd Bergmann | 564d06b | 2013-06-19 01:36:56 +0900 | [diff] [blame] | 201 | 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] | 202 | int depth, void *data) |
| 203 | { |
| 204 | struct map_desc iodesc; |
Sachin Kamat | 3eb9364 | 2014-05-05 14:56:48 +0530 | [diff] [blame] | 205 | const __be32 *reg; |
Rob Herring | 9d0c4df | 2014-04-01 23:49:03 -0500 | [diff] [blame] | 206 | int len; |
Thomas Abraham | f5f83c7 | 2013-04-23 22:46:53 +0900 | [diff] [blame] | 207 | |
| 208 | if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") && |
| 209 | !of_flat_dt_is_compatible(node, "samsung,exynos5440-clock")) |
| 210 | return 0; |
| 211 | |
| 212 | reg = of_get_flat_dt_prop(node, "reg", &len); |
| 213 | if (reg == NULL || len != (sizeof(unsigned long) * 2)) |
| 214 | return 0; |
| 215 | |
| 216 | iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); |
| 217 | iodesc.length = be32_to_cpu(reg[1]) - 1; |
| 218 | iodesc.virtual = (unsigned long)S5P_VA_CHIPID; |
| 219 | iodesc.type = MT_DEVICE; |
| 220 | iotable_init(&iodesc, 1); |
| 221 | return 1; |
| 222 | } |
Thomas Abraham | f5f83c7 | 2013-04-23 22:46:53 +0900 | [diff] [blame] | 223 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 224 | /* |
| 225 | * exynos_map_io |
| 226 | * |
| 227 | * register the standard cpu IO areas |
| 228 | */ |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 229 | static void __init exynos_map_io(void) |
| 230 | { |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 231 | if (soc_is_exynos4()) |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 232 | iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc)); |
| 233 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 234 | if (soc_is_exynos5()) |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 235 | iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 236 | } |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 237 | |
Pankaj Dubey | 5e299f6 | 2014-07-08 07:51:11 +0900 | [diff] [blame] | 238 | static void __init exynos_init_io(void) |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 239 | { |
Doug Anderson | 9c1fcdc | 2013-06-05 13:56:33 -0700 | [diff] [blame] | 240 | debug_ll_io_init(); |
| 241 | |
Tomasz Figa | 04fae59 | 2013-06-15 09:13:25 +0900 | [diff] [blame] | 242 | of_scan_flat_dt(exynos_fdt_map_chipid, NULL); |
Kukjin Kim | 2edb36c | 2012-11-15 15:48:56 +0900 | [diff] [blame] | 243 | |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 244 | /* detect cpu id and rev. */ |
| 245 | s5p_init_cpu(S5P_VA_CHIPID); |
| 246 | |
Sachin Kamat | 6eb8466 | 2014-03-21 02:09:39 +0900 | [diff] [blame] | 247 | exynos_map_io(); |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 248 | } |
| 249 | |
Pankaj Dubey | fce9e5b | 2014-07-11 08:08:29 +0900 | [diff] [blame] | 250 | static const struct of_device_id exynos_dt_pmu_match[] = { |
| 251 | { .compatible = "samsung,exynos3250-pmu" }, |
| 252 | { .compatible = "samsung,exynos4210-pmu" }, |
| 253 | { .compatible = "samsung,exynos4212-pmu" }, |
| 254 | { .compatible = "samsung,exynos4412-pmu" }, |
| 255 | { .compatible = "samsung,exynos5250-pmu" }, |
Vikas Sajjan | 22ead0d | 2014-07-29 06:17:39 +0900 | [diff] [blame] | 256 | { .compatible = "samsung,exynos5260-pmu" }, |
Andreas Faerber | 98504de | 2014-07-29 06:10:40 +0900 | [diff] [blame] | 257 | { .compatible = "samsung,exynos5410-pmu" }, |
Pankaj Dubey | fce9e5b | 2014-07-11 08:08:29 +0900 | [diff] [blame] | 258 | { .compatible = "samsung,exynos5420-pmu" }, |
| 259 | { /*sentinel*/ }, |
| 260 | }; |
| 261 | |
| 262 | static void exynos_map_pmu(void) |
| 263 | { |
| 264 | struct device_node *np; |
| 265 | |
| 266 | np = of_find_matching_node(NULL, exynos_dt_pmu_match); |
| 267 | if (np) |
| 268 | pmu_base_addr = of_iomap(np, 0); |
| 269 | |
| 270 | if (!pmu_base_addr) |
| 271 | panic("failed to find exynos pmu register\n"); |
| 272 | } |
| 273 | |
| 274 | static void __init exynos_init_irq(void) |
| 275 | { |
| 276 | irqchip_init(); |
| 277 | /* |
| 278 | * Since platsmp.c needs pmu base address by the time |
| 279 | * DT is not unflatten so we can't use DT APIs before |
| 280 | * init_irq |
| 281 | */ |
| 282 | exynos_map_pmu(); |
| 283 | } |
| 284 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 285 | static void __init exynos_dt_machine_init(void) |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 286 | { |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 287 | struct device_node *i2c_np; |
| 288 | const char *i2c_compat = "samsung,s3c2440-i2c"; |
| 289 | unsigned int tmp; |
| 290 | int id; |
Kukjin Kim | 94c7ca7 | 2012-02-11 22:15:45 +0900 | [diff] [blame] | 291 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 292 | /* |
| 293 | * Exynos5's legacy i2c controller and new high speed i2c |
| 294 | * controller have muxed interrupt sources. By default the |
| 295 | * interrupts for 4-channel HS-I2C controller are enabled. |
| 296 | * If node for first four channels of legacy i2c controller |
| 297 | * are available then re-configure the interrupts via the |
| 298 | * system register. |
| 299 | */ |
| 300 | if (soc_is_exynos5()) { |
| 301 | for_each_compatible_node(i2c_np, NULL, i2c_compat) { |
| 302 | if (of_device_is_available(i2c_np)) { |
| 303 | id = of_alias_get_id(i2c_np, "i2c"); |
| 304 | if (id < 4) { |
| 305 | tmp = readl(EXYNOS5_SYS_I2C_CFG); |
| 306 | writel(tmp & ~(0x1 << id), |
| 307 | EXYNOS5_SYS_I2C_CFG); |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | } |
| 312 | |
Olof Johansson | 1754c42 | 2014-06-02 21:47:46 -0700 | [diff] [blame] | 313 | /* |
| 314 | * This is called from smp_prepare_cpus if we've built for SMP, but |
| 315 | * we still need to set it up for PM and firmware ops if not. |
| 316 | */ |
Abhilash Kesavan | 73ea6ec | 2014-07-05 06:09:18 +0900 | [diff] [blame] | 317 | if (!IS_ENABLED(CONFIG_SMP)) |
Olof Johansson | 1754c42 | 2014-06-02 21:47:46 -0700 | [diff] [blame] | 318 | exynos_sysram_init(); |
| 319 | |
Pankaj Dubey | 6887d9e | 2014-07-19 03:48:35 +0900 | [diff] [blame] | 320 | if (of_machine_is_compatible("samsung,exynos4210") || |
| 321 | of_machine_is_compatible("samsung,exynos5250")) |
| 322 | platform_device_register(&exynos_cpuidle); |
Chander Kashyap | b5a296c | 2014-07-05 06:24:35 +0900 | [diff] [blame] | 323 | |
Pankaj Dubey | 6887d9e | 2014-07-19 03:48:35 +0900 | [diff] [blame] | 324 | platform_device_register_simple("exynos-cpufreq", -1, NULL, 0); |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 325 | |
| 326 | of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); |
Kukjin Kim | cc511b8 | 2011-12-27 08:18:36 +0100 | [diff] [blame] | 327 | } |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 328 | |
| 329 | static char const *exynos_dt_compat[] __initconst = { |
Chanwoo Choi | 940bc58 | 2014-05-26 04:12:26 +0900 | [diff] [blame] | 330 | "samsung,exynos3", |
| 331 | "samsung,exynos3250", |
Sachin Kamat | 4868123 | 2014-03-21 02:14:59 +0900 | [diff] [blame] | 332 | "samsung,exynos4", |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 333 | "samsung,exynos4210", |
| 334 | "samsung,exynos4212", |
| 335 | "samsung,exynos4412", |
Sachin Kamat | 4868123 | 2014-03-21 02:14:59 +0900 | [diff] [blame] | 336 | "samsung,exynos5", |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 337 | "samsung,exynos5250", |
Pankaj Dubey | ed08f10 | 2014-05-26 04:28:17 +0900 | [diff] [blame] | 338 | "samsung,exynos5260", |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 339 | "samsung,exynos5420", |
| 340 | "samsung,exynos5440", |
| 341 | NULL |
| 342 | }; |
| 343 | |
| 344 | static void __init exynos_reserve(void) |
| 345 | { |
| 346 | #ifdef CONFIG_S5P_DEV_MFC |
| 347 | int i; |
| 348 | char *mfc_mem[] = { |
| 349 | "samsung,mfc-v5", |
| 350 | "samsung,mfc-v6", |
| 351 | "samsung,mfc-v7", |
| 352 | }; |
| 353 | |
| 354 | for (i = 0; i < ARRAY_SIZE(mfc_mem); i++) |
| 355 | if (of_scan_flat_dt(s5p_fdt_alloc_mfc_mem, mfc_mem[i])) |
| 356 | break; |
| 357 | #endif |
| 358 | } |
| 359 | |
Laura Abbott | 5a12a597 | 2014-07-15 10:03:36 -0700 | [diff] [blame] | 360 | static void __init exynos_dt_fixup(void) |
| 361 | { |
| 362 | /* |
| 363 | * Some versions of uboot pass garbage entries in the memory node, |
| 364 | * use the old CONFIG_ARM_NR_BANKS |
| 365 | */ |
| 366 | of_fdt_limit_memory(8); |
| 367 | } |
| 368 | |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 369 | DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)") |
| 370 | /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */ |
| 371 | /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */ |
Russell King | 15b0bc4 | 2014-04-28 15:54:08 +0100 | [diff] [blame] | 372 | .l2c_aux_val = 0x3c400001, |
| 373 | .l2c_aux_mask = 0xc20fffff, |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 374 | .smp = smp_ops(exynos_smp_ops), |
| 375 | .map_io = exynos_init_io, |
| 376 | .init_early = exynos_firmware_init, |
Pankaj Dubey | fce9e5b | 2014-07-11 08:08:29 +0900 | [diff] [blame] | 377 | .init_irq = exynos_init_irq, |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 378 | .init_machine = exynos_dt_machine_init, |
| 379 | .init_late = exynos_init_late, |
| 380 | .dt_compat = exynos_dt_compat, |
| 381 | .restart = exynos_restart, |
| 382 | .reserve = exynos_reserve, |
Laura Abbott | 5a12a597 | 2014-07-15 10:03:36 -0700 | [diff] [blame] | 383 | .dt_fixup = exynos_dt_fixup, |
Sachin Kamat | cbf08b9 | 2014-03-21 02:14:30 +0900 | [diff] [blame] | 384 | MACHINE_END |