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 "hw/arm/sharpsl.h"
20 #include "hw/sysbus.h"
23 #define REG_FMT "0x%02lx"
27 #define TYPE_SCOOP "scoop"
28 #define SCOOP(obj) OBJECT_CHECK(ScoopInfo, (obj), TYPE_SCOOP)
30 typedef struct ScoopInfo ScoopInfo;
32 SysBusDevice parent_obj;
50 #define SCOOP_MCR 0x00
51 #define SCOOP_CDR 0x04
52 #define SCOOP_CSR 0x08
53 #define SCOOP_CPR 0x0c
54 #define SCOOP_CCR 0x10
55 #define SCOOP_IRR_IRM 0x14
56 #define SCOOP_IMR 0x18
57 #define SCOOP_ISR 0x1c
58 #define SCOOP_GPCR 0x20
59 #define SCOOP_GPWR 0x24
60 #define SCOOP_GPRR 0x28
62 static inline void scoop_gpio_handler_update(ScoopInfo *s) {
65 level = s->gpio_level & s->gpio_dir;
67 for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) {
69 qemu_set_irq(s->handler[bit], (level >> bit) & 1);
72 s->prev_level = level;
75 static uint64_t scoop_read(void *opaque, hwaddr addr,
78 ScoopInfo *s = (ScoopInfo *) opaque;
80 switch (addr & 0x3f) {
101 return s->gpio_level;
103 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
109 static void scoop_write(void *opaque, hwaddr addr,
110 uint64_t value, unsigned size)
112 ScoopInfo *s = (ScoopInfo *) opaque;
115 switch (addr & 0x3f) {
141 scoop_gpio_handler_update(s);
144 case SCOOP_GPRR: /* GPRR is probably R/O in real HW */
145 s->gpio_level = value & s->gpio_dir;
146 scoop_gpio_handler_update(s);
149 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
153 static const MemoryRegionOps scoop_ops = {
155 .write = scoop_write,
156 .endianness = DEVICE_NATIVE_ENDIAN,
159 static void scoop_gpio_set(void *opaque, int line, int level)
161 ScoopInfo *s = (ScoopInfo *) opaque;
164 s->gpio_level |= (1 << line);
166 s->gpio_level &= ~(1 << line);
169 static int scoop_init(SysBusDevice *sbd)
171 DeviceState *dev = DEVICE(sbd);
172 ScoopInfo *s = SCOOP(dev);
175 qdev_init_gpio_out(dev, s->handler, 16);
176 qdev_init_gpio_in(dev, scoop_gpio_set, 16);
177 memory_region_init_io(&s->iomem, OBJECT(s), &scoop_ops, s, "scoop", 0x1000);
179 sysbus_init_mmio(sbd, &s->iomem);
184 static int scoop_post_load(void *opaque, int version_id)
186 ScoopInfo *s = (ScoopInfo *) opaque;
190 level = s->gpio_level & s->gpio_dir;
192 for (i = 0; i < 16; i++) {
193 qemu_set_irq(s->handler[i], (level >> i) & 1);
196 s->prev_level = level;
201 static bool is_version_0 (void *opaque, int version_id)
203 return version_id == 0;
206 static const VMStateDescription vmstate_scoop_regs = {
209 .minimum_version_id = 0,
210 .minimum_version_id_old = 0,
211 .post_load = scoop_post_load,
212 .fields = (VMStateField []) {
213 VMSTATE_UINT16(status, ScoopInfo),
214 VMSTATE_UINT16(power, ScoopInfo),
215 VMSTATE_UINT32(gpio_level, ScoopInfo),
216 VMSTATE_UINT32(gpio_dir, ScoopInfo),
217 VMSTATE_UINT32(prev_level, ScoopInfo),
218 VMSTATE_UINT16(mcr, ScoopInfo),
219 VMSTATE_UINT16(cdr, ScoopInfo),
220 VMSTATE_UINT16(ccr, ScoopInfo),
221 VMSTATE_UINT16(irr, ScoopInfo),
222 VMSTATE_UINT16(imr, ScoopInfo),
223 VMSTATE_UINT16(isr, ScoopInfo),
224 VMSTATE_UNUSED_TEST(is_version_0, 2),
225 VMSTATE_END_OF_LIST(),
229 static Property scoop_sysbus_properties[] = {
230 DEFINE_PROP_END_OF_LIST(),
233 static void scoop_sysbus_class_init(ObjectClass *klass, void *data)
235 DeviceClass *dc = DEVICE_CLASS(klass);
236 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
238 k->init = scoop_init;
239 dc->desc = "Scoop2 Sharp custom ASIC";
240 dc->vmsd = &vmstate_scoop_regs;
241 dc->props = scoop_sysbus_properties;
244 static const TypeInfo scoop_sysbus_info = {
246 .parent = TYPE_SYS_BUS_DEVICE,
247 .instance_size = sizeof(ScoopInfo),
248 .class_init = scoop_sysbus_class_init,
251 static void scoop_register_types(void)
253 type_register_static(&scoop_sysbus_info);
256 type_init(scoop_register_types)
258 /* Write the bootloader parameters memory area. */
260 #define MAGIC_CHG(a, b, c, d) ((d << 24) | (c << 16) | (b << 8) | a)
262 static struct QEMU_PACKED sl_param_info {
263 uint32_t comadj_keyword;
266 uint32_t uuid_keyword;
269 uint32_t touch_keyword;
275 uint32_t adadj_keyword;
278 uint32_t phad_keyword;
280 } zaurus_bootparam = {
281 .comadj_keyword = MAGIC_CHG('C', 'M', 'A', 'D'),
283 .uuid_keyword = MAGIC_CHG('U', 'U', 'I', 'D'),
285 .touch_keyword = MAGIC_CHG('T', 'U', 'C', 'H'),
287 .adadj_keyword = MAGIC_CHG('B', 'V', 'A', 'D'),
289 .phad_keyword = MAGIC_CHG('P', 'H', 'A', 'D'),
293 void sl_bootparam_write(hwaddr ptr)
295 cpu_physical_memory_write(ptr, &zaurus_bootparam,
296 sizeof(struct sl_param_info));