1 /* 2 * Copyright (c) 2006-2008 Openedhand Ltd. 3 * Written by Andrzej Zaborowski <balrog@zabor.org> 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation; either version 2 or 8 * (at your option) version 3 of the License. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, see <http://www.gnu.org/licenses/>. 17 */ 18 19 #include "qemu/osdep.h" 20 #include "hw/hw.h" 21 #include "hw/arm/sharpsl.h" 22 #include "hw/sysbus.h" 23 #include "qemu/module.h" 24 25 #undef REG_FMT 26 #define REG_FMT "0x%02lx" 27 28 /* SCOOP devices */ 29 30 #define TYPE_SCOOP "scoop" 31 #define SCOOP(obj) OBJECT_CHECK(ScoopInfo, (obj), TYPE_SCOOP) 32 33 typedef struct ScoopInfo ScoopInfo; 34 struct ScoopInfo { 35 SysBusDevice parent_obj; 36 37 qemu_irq handler[16]; 38 MemoryRegion iomem; 39 uint16_t status; 40 uint16_t power; 41 uint32_t gpio_level; 42 uint32_t gpio_dir; 43 uint32_t prev_level; 44 45 uint16_t mcr; 46 uint16_t cdr; 47 uint16_t ccr; 48 uint16_t irr; 49 uint16_t imr; 50 uint16_t isr; 51 }; 52 53 #define SCOOP_MCR 0x00 54 #define SCOOP_CDR 0x04 55 #define SCOOP_CSR 0x08 56 #define SCOOP_CPR 0x0c 57 #define SCOOP_CCR 0x10 58 #define SCOOP_IRR_IRM 0x14 59 #define SCOOP_IMR 0x18 60 #define SCOOP_ISR 0x1c 61 #define SCOOP_GPCR 0x20 62 #define SCOOP_GPWR 0x24 63 #define SCOOP_GPRR 0x28 64 65 static inline void scoop_gpio_handler_update(ScoopInfo *s) { 66 uint32_t level, diff; 67 int bit; 68 level = s->gpio_level & s->gpio_dir; 69 70 for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) { 71 bit = ctz32(diff); 72 qemu_set_irq(s->handler[bit], (level >> bit) & 1); 73 } 74 75 s->prev_level = level; 76 } 77 78 static uint64_t scoop_read(void *opaque, hwaddr addr, 79 unsigned size) 80 { 81 ScoopInfo *s = (ScoopInfo *) opaque; 82 83 switch (addr & 0x3f) { 84 case SCOOP_MCR: 85 return s->mcr; 86 case SCOOP_CDR: 87 return s->cdr; 88 case SCOOP_CSR: 89 return s->status; 90 case SCOOP_CPR: 91 return s->power; 92 case SCOOP_CCR: 93 return s->ccr; 94 case SCOOP_IRR_IRM: 95 return s->irr; 96 case SCOOP_IMR: 97 return s->imr; 98 case SCOOP_ISR: 99 return s->isr; 100 case SCOOP_GPCR: 101 return s->gpio_dir; 102 case SCOOP_GPWR: 103 case SCOOP_GPRR: 104 return s->gpio_level; 105 default: 106 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr); 107 } 108 109 return 0; 110 } 111 112 static void scoop_write(void *opaque, hwaddr addr, 113 uint64_t value, unsigned size) 114 { 115 ScoopInfo *s = (ScoopInfo *) opaque; 116 value &= 0xffff; 117 118 switch (addr & 0x3f) { 119 case SCOOP_MCR: 120 s->mcr = value; 121 break; 122 case SCOOP_CDR: 123 s->cdr = value; 124 break; 125 case SCOOP_CPR: 126 s->power = value; 127 if (value & 0x80) 128 s->power |= 0x8040; 129 break; 130 case SCOOP_CCR: 131 s->ccr = value; 132 break; 133 case SCOOP_IRR_IRM: 134 s->irr = value; 135 break; 136 case SCOOP_IMR: 137 s->imr = value; 138 break; 139 case SCOOP_ISR: 140 s->isr = value; 141 break; 142 case SCOOP_GPCR: 143 s->gpio_dir = value; 144 scoop_gpio_handler_update(s); 145 break; 146 case SCOOP_GPWR: 147 case SCOOP_GPRR: /* GPRR is probably R/O in real HW */ 148 s->gpio_level = value & s->gpio_dir; 149 scoop_gpio_handler_update(s); 150 break; 151 default: 152 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr); 153 } 154 } 155 156 static const MemoryRegionOps scoop_ops = { 157 .read = scoop_read, 158 .write = scoop_write, 159 .endianness = DEVICE_NATIVE_ENDIAN, 160 }; 161 162 static void scoop_gpio_set(void *opaque, int line, int level) 163 { 164 ScoopInfo *s = (ScoopInfo *) opaque; 165 166 if (level) 167 s->gpio_level |= (1 << line); 168 else 169 s->gpio_level &= ~(1 << line); 170 } 171 172 static void scoop_init(Object *obj) 173 { 174 DeviceState *dev = DEVICE(obj); 175 ScoopInfo *s = SCOOP(obj); 176 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 177 178 s->status = 0x02; 179 qdev_init_gpio_out(dev, s->handler, 16); 180 qdev_init_gpio_in(dev, scoop_gpio_set, 16); 181 memory_region_init_io(&s->iomem, obj, &scoop_ops, s, "scoop", 0x1000); 182 183 sysbus_init_mmio(sbd, &s->iomem); 184 } 185 186 static int scoop_post_load(void *opaque, int version_id) 187 { 188 ScoopInfo *s = (ScoopInfo *) opaque; 189 int i; 190 uint32_t level; 191 192 level = s->gpio_level & s->gpio_dir; 193 194 for (i = 0; i < 16; i++) { 195 qemu_set_irq(s->handler[i], (level >> i) & 1); 196 } 197 198 s->prev_level = level; 199 200 return 0; 201 } 202 203 static bool is_version_0 (void *opaque, int version_id) 204 { 205 return version_id == 0; 206 } 207 208 static bool vmstate_scoop_validate(void *opaque, int version_id) 209 { 210 ScoopInfo *s = opaque; 211 212 return !(s->prev_level & 0xffff0000) && 213 !(s->gpio_level & 0xffff0000) && 214 !(s->gpio_dir & 0xffff0000); 215 } 216 217 static const VMStateDescription vmstate_scoop_regs = { 218 .name = "scoop", 219 .version_id = 1, 220 .minimum_version_id = 0, 221 .post_load = scoop_post_load, 222 .fields = (VMStateField[]) { 223 VMSTATE_UINT16(status, ScoopInfo), 224 VMSTATE_UINT16(power, ScoopInfo), 225 VMSTATE_UINT32(gpio_level, ScoopInfo), 226 VMSTATE_UINT32(gpio_dir, ScoopInfo), 227 VMSTATE_UINT32(prev_level, ScoopInfo), 228 VMSTATE_VALIDATE("irq levels are 16 bit", vmstate_scoop_validate), 229 VMSTATE_UINT16(mcr, ScoopInfo), 230 VMSTATE_UINT16(cdr, ScoopInfo), 231 VMSTATE_UINT16(ccr, ScoopInfo), 232 VMSTATE_UINT16(irr, ScoopInfo), 233 VMSTATE_UINT16(imr, ScoopInfo), 234 VMSTATE_UINT16(isr, ScoopInfo), 235 VMSTATE_UNUSED_TEST(is_version_0, 2), 236 VMSTATE_END_OF_LIST(), 237 }, 238 }; 239 240 static void scoop_sysbus_class_init(ObjectClass *klass, void *data) 241 { 242 DeviceClass *dc = DEVICE_CLASS(klass); 243 244 dc->desc = "Scoop2 Sharp custom ASIC"; 245 dc->vmsd = &vmstate_scoop_regs; 246 } 247 248 static const TypeInfo scoop_sysbus_info = { 249 .name = TYPE_SCOOP, 250 .parent = TYPE_SYS_BUS_DEVICE, 251 .instance_size = sizeof(ScoopInfo), 252 .instance_init = scoop_init, 253 .class_init = scoop_sysbus_class_init, 254 }; 255 256 static void scoop_register_types(void) 257 { 258 type_register_static(&scoop_sysbus_info); 259 } 260 261 type_init(scoop_register_types) 262 263 /* Write the bootloader parameters memory area. */ 264 265 #define MAGIC_CHG(a, b, c, d) ((d << 24) | (c << 16) | (b << 8) | a) 266 267 static struct QEMU_PACKED sl_param_info { 268 uint32_t comadj_keyword; 269 int32_t comadj; 270 271 uint32_t uuid_keyword; 272 char uuid[16]; 273 274 uint32_t touch_keyword; 275 int32_t touch_xp; 276 int32_t touch_yp; 277 int32_t touch_xd; 278 int32_t touch_yd; 279 280 uint32_t adadj_keyword; 281 int32_t adadj; 282 283 uint32_t phad_keyword; 284 int32_t phadadj; 285 } zaurus_bootparam = { 286 .comadj_keyword = MAGIC_CHG('C', 'M', 'A', 'D'), 287 .comadj = 125, 288 .uuid_keyword = MAGIC_CHG('U', 'U', 'I', 'D'), 289 .uuid = { -1 }, 290 .touch_keyword = MAGIC_CHG('T', 'U', 'C', 'H'), 291 .touch_xp = -1, 292 .adadj_keyword = MAGIC_CHG('B', 'V', 'A', 'D'), 293 .adadj = -1, 294 .phad_keyword = MAGIC_CHG('P', 'H', 'A', 'D'), 295 .phadadj = 0x01, 296 }; 297 298 void sl_bootparam_write(hwaddr ptr) 299 { 300 cpu_physical_memory_write(ptr, &zaurus_bootparam, 301 sizeof(struct sl_param_info)); 302 } 303