2 * Copyright (c) 2006-2008 Openedhand Ltd.
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.
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.
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/>.
19 #include "qemu/osdep.h"
21 #include "hw/arm/sharpsl.h"
22 #include "hw/sysbus.h"
23 #include "migration/vmstate.h"
24 #include "qemu/module.h"
26 #include "qom/object.h"
30 #define TYPE_SCOOP "scoop"
31 OBJECT_DECLARE_SIMPLE_TYPE(ScoopInfo, SCOOP)
34 SysBusDevice parent_obj;
52 #define SCOOP_MCR 0x00
53 #define SCOOP_CDR 0x04
54 #define SCOOP_CSR 0x08
55 #define SCOOP_CPR 0x0c
56 #define SCOOP_CCR 0x10
57 #define SCOOP_IRR_IRM 0x14
58 #define SCOOP_IMR 0x18
59 #define SCOOP_ISR 0x1c
60 #define SCOOP_GPCR 0x20
61 #define SCOOP_GPWR 0x24
62 #define SCOOP_GPRR 0x28
64 static inline void scoop_gpio_handler_update(ScoopInfo *s) {
67 level = s->gpio_level & s->gpio_dir;
69 for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) {
71 qemu_set_irq(s->handler[bit], (level >> bit) & 1);
74 s->prev_level = level;
77 static uint64_t scoop_read(void *opaque, hwaddr addr,
80 ScoopInfo *s = (ScoopInfo *) opaque;
82 switch (addr & 0x3f) {
103 return s->gpio_level;
105 qemu_log_mask(LOG_GUEST_ERROR,
106 "scoop_read: bad register offset 0x%02" HWADDR_PRIx "\n",
113 static void scoop_write(void *opaque, hwaddr addr,
114 uint64_t value, unsigned size)
116 ScoopInfo *s = (ScoopInfo *) opaque;
119 switch (addr & 0x3f) {
145 scoop_gpio_handler_update(s);
148 case SCOOP_GPRR: /* GPRR is probably R/O in real HW */
149 s->gpio_level = value & s->gpio_dir;
150 scoop_gpio_handler_update(s);
153 qemu_log_mask(LOG_GUEST_ERROR,
154 "scoop_write: bad register offset 0x%02" HWADDR_PRIx "\n",
159 static const MemoryRegionOps scoop_ops = {
161 .write = scoop_write,
162 .endianness = DEVICE_NATIVE_ENDIAN,
165 static void scoop_gpio_set(void *opaque, int line, int level)
167 ScoopInfo *s = (ScoopInfo *) opaque;
170 s->gpio_level |= (1 << line);
172 s->gpio_level &= ~(1 << line);
175 static void scoop_init(Object *obj)
177 DeviceState *dev = DEVICE(obj);
178 ScoopInfo *s = SCOOP(obj);
179 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
182 qdev_init_gpio_out(dev, s->handler, 16);
183 qdev_init_gpio_in(dev, scoop_gpio_set, 16);
184 memory_region_init_io(&s->iomem, obj, &scoop_ops, s, "scoop", 0x1000);
186 sysbus_init_mmio(sbd, &s->iomem);
189 static int scoop_post_load(void *opaque, int version_id)
191 ScoopInfo *s = (ScoopInfo *) opaque;
195 level = s->gpio_level & s->gpio_dir;
197 for (i = 0; i < 16; i++) {
198 qemu_set_irq(s->handler[i], (level >> i) & 1);
201 s->prev_level = level;
206 static bool is_version_0 (void *opaque, int version_id)
208 return version_id == 0;
211 static bool vmstate_scoop_validate(void *opaque, int version_id)
213 ScoopInfo *s = opaque;
215 return !(s->prev_level & 0xffff0000) &&
216 !(s->gpio_level & 0xffff0000) &&
217 !(s->gpio_dir & 0xffff0000);
220 static const VMStateDescription vmstate_scoop_regs = {
223 .minimum_version_id = 0,
224 .post_load = scoop_post_load,
225 .fields = (VMStateField[]) {
226 VMSTATE_UINT16(status, ScoopInfo),
227 VMSTATE_UINT16(power, ScoopInfo),
228 VMSTATE_UINT32(gpio_level, ScoopInfo),
229 VMSTATE_UINT32(gpio_dir, ScoopInfo),
230 VMSTATE_UINT32(prev_level, ScoopInfo),
231 VMSTATE_VALIDATE("irq levels are 16 bit", vmstate_scoop_validate),
232 VMSTATE_UINT16(mcr, ScoopInfo),
233 VMSTATE_UINT16(cdr, ScoopInfo),
234 VMSTATE_UINT16(ccr, ScoopInfo),
235 VMSTATE_UINT16(irr, ScoopInfo),
236 VMSTATE_UINT16(imr, ScoopInfo),
237 VMSTATE_UINT16(isr, ScoopInfo),
238 VMSTATE_UNUSED_TEST(is_version_0, 2),
239 VMSTATE_END_OF_LIST(),
243 static void scoop_sysbus_class_init(ObjectClass *klass, void *data)
245 DeviceClass *dc = DEVICE_CLASS(klass);
247 dc->desc = "Scoop2 Sharp custom ASIC";
248 dc->vmsd = &vmstate_scoop_regs;
251 static const TypeInfo scoop_sysbus_info = {
253 .parent = TYPE_SYS_BUS_DEVICE,
254 .instance_size = sizeof(ScoopInfo),
255 .instance_init = scoop_init,
256 .class_init = scoop_sysbus_class_init,
259 static void scoop_register_types(void)
261 type_register_static(&scoop_sysbus_info);
264 type_init(scoop_register_types)
266 /* Write the bootloader parameters memory area. */
268 #define MAGIC_CHG(a, b, c, d) ((d << 24) | (c << 16) | (b << 8) | a)
270 static struct QEMU_PACKED sl_param_info {
271 uint32_t comadj_keyword;
274 uint32_t uuid_keyword;
277 uint32_t touch_keyword;
283 uint32_t adadj_keyword;
286 uint32_t phad_keyword;
288 } zaurus_bootparam = {
289 .comadj_keyword = MAGIC_CHG('C', 'M', 'A', 'D'),
291 .uuid_keyword = MAGIC_CHG('U', 'U', 'I', 'D'),
293 .touch_keyword = MAGIC_CHG('T', 'U', 'C', 'H'),
295 .adadj_keyword = MAGIC_CHG('B', 'V', 'A', 'D'),
297 .phad_keyword = MAGIC_CHG('P', 'H', 'A', 'D'),
301 void sl_bootparam_write(hwaddr ptr)
303 cpu_physical_memory_write(ptr, &zaurus_bootparam,
304 sizeof(struct sl_param_info));