Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 1 | /* |
| 2 | * bonito board support |
| 3 | * |
| 4 | * Copyright (C) 2011 Renesas Solutions Corp. |
| 5 | * Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| 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 as published by |
| 9 | * the Free Software Foundation; version 2 of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <linux/kernel.h> |
Kuninori Morimoto | e609b7c | 2011-11-10 18:47:07 -0800 | [diff] [blame^] | 23 | #include <linux/i2c.h> |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 24 | #include <linux/init.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/irq.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | #include <linux/gpio.h> |
| 29 | #include <mach/common.h> |
| 30 | #include <asm/mach-types.h> |
| 31 | #include <asm/mach/arch.h> |
| 32 | #include <asm/mach/map.h> |
| 33 | #include <asm/mach/time.h> |
| 34 | #include <asm/hardware/cache-l2x0.h> |
| 35 | #include <mach/r8a7740.h> |
| 36 | |
| 37 | /* |
| 38 | * CS Address device note |
| 39 | *---------------------------------------------------------------- |
| 40 | * 0 0x0000_0000 NOR Flash (64MB) SW12 : bit3 = OFF |
| 41 | * 2 0x0800_0000 ExtNOR (64MB) SW12 : bit3 = OFF |
| 42 | * 4 - |
| 43 | * 5A - |
| 44 | * 5B 0x1600_0000 SRAM (8MB) |
| 45 | * 6 0x1800_0000 FPGA (64K) |
| 46 | * 0x1801_0000 Ether (4KB) |
| 47 | * 0x1801_1000 USB (4KB) |
| 48 | */ |
| 49 | |
| 50 | /* |
| 51 | * SW12 |
| 52 | * |
| 53 | * bit1 bit2 bit3 |
| 54 | *---------------------------------------------------------------------------- |
| 55 | * ON NOR WriteProtect NAND WriteProtect CS0 ExtNOR / CS2 NOR |
| 56 | * OFF NOR Not WriteProtect NAND Not WriteProtect CS0 NOR / CS2 ExtNOR |
| 57 | */ |
| 58 | |
| 59 | /* |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 60 | * SCIFA5 (CN42) |
| 61 | * |
| 62 | * S38.3 = ON |
| 63 | * S39.6 = ON |
| 64 | * S43.1 = ON |
| 65 | */ |
| 66 | |
| 67 | /* |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 68 | * FPGA |
| 69 | */ |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 70 | #define BUSSWMR1 0x0070 |
| 71 | #define BUSSWMR2 0x0072 |
| 72 | #define BUSSWMR3 0x0074 |
| 73 | #define BUSSWMR4 0x0076 |
| 74 | |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 75 | #define A1MDSR 0x10E0 |
| 76 | #define BVERR 0x1100 |
| 77 | static u16 bonito_fpga_read(u32 offset) |
| 78 | { |
| 79 | return __raw_readw(0xf0003000 + offset); |
| 80 | } |
| 81 | |
| 82 | static void bonito_fpga_write(u32 offset, u16 val) |
| 83 | { |
| 84 | __raw_writew(val, 0xf0003000 + offset); |
| 85 | } |
| 86 | |
| 87 | /* |
Kuninori Morimoto | e609b7c | 2011-11-10 18:47:07 -0800 | [diff] [blame^] | 88 | * PMIC settings |
| 89 | * |
| 90 | * FIXME |
| 91 | * |
| 92 | * bonito board needs some settings by pmic which use i2c access. |
| 93 | * pmic settings use device_initcall() here for use it. |
| 94 | */ |
| 95 | static __u8 *pmic_settings = NULL; |
| 96 | static __u8 pmic_do_2A[] = { |
| 97 | 0x1C, 0x09, |
| 98 | 0x1A, 0x80, |
| 99 | 0xff, 0xff, |
| 100 | }; |
| 101 | |
| 102 | static int __init pmic_init(void) |
| 103 | { |
| 104 | struct i2c_adapter *a = i2c_get_adapter(0); |
| 105 | struct i2c_msg msg; |
| 106 | __u8 buf[2]; |
| 107 | int i, ret; |
| 108 | |
| 109 | if (!pmic_settings) |
| 110 | return 0; |
| 111 | if (!a) |
| 112 | return 0; |
| 113 | |
| 114 | msg.addr = 0x46; |
| 115 | msg.buf = buf; |
| 116 | msg.len = 2; |
| 117 | msg.flags = 0; |
| 118 | |
| 119 | for (i = 0; ; i += 2) { |
| 120 | buf[0] = pmic_settings[i + 0]; |
| 121 | buf[1] = pmic_settings[i + 1]; |
| 122 | |
| 123 | if ((0xff == buf[0]) && (0xff == buf[1])) |
| 124 | break; |
| 125 | |
| 126 | ret = i2c_transfer(a, &msg, 1); |
| 127 | if (ret < 0) { |
| 128 | pr_err("i2c transfer fail\n"); |
| 129 | break; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | return 0; |
| 134 | } |
| 135 | device_initcall(pmic_init); |
| 136 | |
| 137 | /* |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 138 | * core board devices |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 139 | */ |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 140 | static struct platform_device *bonito_core_devices[] __initdata = { |
| 141 | }; |
| 142 | |
| 143 | /* |
| 144 | * base board devices |
| 145 | */ |
| 146 | static struct platform_device *bonito_base_devices[] __initdata = { |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 147 | }; |
| 148 | |
| 149 | /* |
| 150 | * map I/O |
| 151 | */ |
| 152 | static struct map_desc bonito_io_desc[] __initdata = { |
| 153 | /* |
| 154 | * for CPGA/INTC/PFC |
| 155 | * 0xe6000000-0xefffffff -> 0xe6000000-0xefffffff |
| 156 | */ |
| 157 | { |
| 158 | .virtual = 0xe6000000, |
| 159 | .pfn = __phys_to_pfn(0xe6000000), |
| 160 | .length = 160 << 20, |
| 161 | .type = MT_DEVICE_NONSHARED |
| 162 | }, |
| 163 | #ifdef CONFIG_CACHE_L2X0 |
| 164 | /* |
| 165 | * for l2x0_init() |
| 166 | * 0xf0100000-0xf0101000 -> 0xf0002000-0xf0003000 |
| 167 | */ |
| 168 | { |
| 169 | .virtual = 0xf0002000, |
| 170 | .pfn = __phys_to_pfn(0xf0100000), |
| 171 | .length = PAGE_SIZE, |
| 172 | .type = MT_DEVICE_NONSHARED |
| 173 | }, |
| 174 | #endif |
| 175 | /* |
| 176 | * for FPGA (0x1800000-0x19ffffff) |
| 177 | * 0x18000000-0x18002000 -> 0xf0003000-0xf0005000 |
| 178 | */ |
| 179 | { |
| 180 | .virtual = 0xf0003000, |
| 181 | .pfn = __phys_to_pfn(0x18000000), |
| 182 | .length = PAGE_SIZE * 2, |
| 183 | .type = MT_DEVICE_NONSHARED |
| 184 | } |
| 185 | }; |
| 186 | |
| 187 | static void __init bonito_map_io(void) |
| 188 | { |
| 189 | iotable_init(bonito_io_desc, ARRAY_SIZE(bonito_io_desc)); |
| 190 | |
| 191 | /* setup early devices and console here as well */ |
| 192 | r8a7740_add_early_devices(); |
| 193 | shmobile_setup_console(); |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * board init |
| 198 | */ |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 199 | #define BIT_ON(sw, bit) (sw & (1 << bit)) |
| 200 | #define BIT_OFF(sw, bit) (!(sw & (1 << bit))) |
| 201 | |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 202 | static void __init bonito_init(void) |
| 203 | { |
| 204 | u16 val; |
| 205 | |
| 206 | r8a7740_pinmux_init(); |
| 207 | |
Kuninori Morimoto | e609b7c | 2011-11-10 18:47:07 -0800 | [diff] [blame^] | 208 | pmic_settings = pmic_do_2A; |
| 209 | |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 210 | /* |
| 211 | * core board settings |
| 212 | */ |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 213 | |
| 214 | #ifdef CONFIG_CACHE_L2X0 |
| 215 | /* Early BRESP enable, Shared attribute override enable, 32K*8way */ |
| 216 | l2x0_init(__io(0xf0002000), 0x40440000, 0x82000fff); |
| 217 | #endif |
| 218 | |
| 219 | r8a7740_add_standard_devices(); |
Kuninori Morimoto | b6b37e2 | 2011-11-10 18:46:56 -0800 | [diff] [blame] | 220 | |
| 221 | platform_add_devices(bonito_core_devices, |
| 222 | ARRAY_SIZE(bonito_core_devices)); |
| 223 | |
| 224 | /* |
| 225 | * base board settings |
| 226 | */ |
| 227 | gpio_request(GPIO_PORT176, NULL); |
| 228 | gpio_direction_input(GPIO_PORT176); |
| 229 | if (!gpio_get_value(GPIO_PORT176)) { |
| 230 | u16 bsw2; |
| 231 | u16 bsw3; |
| 232 | u16 bsw4; |
| 233 | |
| 234 | /* |
| 235 | * FPGA |
| 236 | */ |
| 237 | gpio_request(GPIO_FN_CS5B, NULL); |
| 238 | gpio_request(GPIO_FN_CS6A, NULL); |
| 239 | gpio_request(GPIO_FN_CS5A_PORT105, NULL); |
| 240 | gpio_request(GPIO_FN_IRQ10, NULL); |
| 241 | |
| 242 | val = bonito_fpga_read(BVERR); |
| 243 | pr_info("bonito version: cpu %02x, base %02x\n", |
| 244 | ((val >> 8) & 0xFF), |
| 245 | ((val >> 0) & 0xFF)); |
| 246 | |
| 247 | bsw2 = bonito_fpga_read(BUSSWMR2); |
| 248 | bsw3 = bonito_fpga_read(BUSSWMR3); |
| 249 | bsw4 = bonito_fpga_read(BUSSWMR4); |
| 250 | |
| 251 | /* |
| 252 | * SCIFA5 (CN42) |
| 253 | */ |
| 254 | if (BIT_OFF(bsw2, 1) && /* S38.3 = ON */ |
| 255 | BIT_OFF(bsw3, 9) && /* S39.6 = ON */ |
| 256 | BIT_OFF(bsw4, 4)) { /* S43.1 = ON */ |
| 257 | gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL); |
| 258 | gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL); |
| 259 | } |
| 260 | |
| 261 | platform_add_devices(bonito_base_devices, |
| 262 | ARRAY_SIZE(bonito_base_devices)); |
| 263 | } |
Kuninori Morimoto | d55c9a9 | 2011-11-10 18:46:45 -0800 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | static void __init bonito_timer_init(void) |
| 267 | { |
| 268 | u16 val; |
| 269 | u8 md_ck = 0; |
| 270 | |
| 271 | /* read MD_CK value */ |
| 272 | val = bonito_fpga_read(A1MDSR); |
| 273 | if (val & (1 << 10)) |
| 274 | md_ck |= MD_CK2; |
| 275 | if (val & (1 << 9)) |
| 276 | md_ck |= MD_CK1; |
| 277 | if (val & (1 << 8)) |
| 278 | md_ck |= MD_CK0; |
| 279 | |
| 280 | r8a7740_clock_init(md_ck); |
| 281 | shmobile_timer.init(); |
| 282 | } |
| 283 | |
| 284 | struct sys_timer bonito_timer = { |
| 285 | .init = bonito_timer_init, |
| 286 | }; |
| 287 | |
| 288 | MACHINE_START(BONITO, "bonito") |
| 289 | .map_io = bonito_map_io, |
| 290 | .init_irq = r8a7740_init_irq, |
| 291 | .handle_irq = shmobile_handle_irq_intc, |
| 292 | .init_machine = bonito_init, |
| 293 | .timer = &bonito_timer, |
| 294 | MACHINE_END |