2 * Copyright (c) 2006-2008 Openedhand Ltd.
3 * Written by Andrzej Zaborowski <balrog@zabor.org>
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/>.
18 #include "qemu/osdep.h"
20 #include "hw/arm/sharpsl.h"
21 #include "hw/sysbus.h"
24 #define REG_FMT "0x%02lx"
28 #define TYPE_SCOOP "scoop"
29 #define SCOOP(obj) OBJECT_CHECK(ScoopInfo, (obj), TYPE_SCOOP)
31 typedef struct ScoopInfo ScoopInfo;
33 SysBusDevice parent_obj;
51 #define SCOOP_MCR 0x00
52 #define SCOOP_CDR 0x04
53 #define SCOOP_CSR 0x08
54 #define SCOOP_CPR 0x0c
55 #define SCOOP_CCR 0x10
56 #define SCOOP_IRR_IRM 0x14
57 #define SCOOP_IMR 0x18
58 #define SCOOP_ISR 0x1c
59 #define SCOOP_GPCR 0x20
60 #define SCOOP_GPWR 0x24
61 #define SCOOP_GPRR 0x28
63 static inline void scoop_gpio_handler_update(ScoopInfo *s) {
66 level = s->gpio_level & s->gpio_dir;
68 for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) {
70 qemu_set_irq(s->handler[bit], (level >> bit) & 1);
73 s->prev_level = level;
76 static uint64_t scoop_read(void *opaque, hwaddr addr,
79 ScoopInfo *s = (ScoopInfo *) opaque;
81 switch (addr & 0x3f) {
102 return s->gpio_level;
104 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
110 static void scoop_write(void *opaque, hwaddr addr,
111 uint64_t value, unsigned size)
113 ScoopInfo *s = (ScoopInfo *) opaque;
116 switch (addr & 0x3f) {
142 scoop_gpio_handler_update(s);
145 case SCOOP_GPRR: /* GPRR is probably R/O in real HW */
146 s->gpio_level = value & s->gpio_dir;
147 scoop_gpio_handler_update(s);
150 zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
154 static const MemoryRegionOps scoop_ops = {
156 .write = scoop_write,
157 .endianness = DEVICE_NATIVE_ENDIAN,
160 static void scoop_gpio_set(void *opaque, int line, int level)
162 ScoopInfo *s = (ScoopInfo *) opaque;
165 s->gpio_level |= (1 << line);
167 s->gpio_level &= ~(1 << line);
170 static int scoop_init(SysBusDevice *sbd)
172 DeviceState *dev = DEVICE(sbd);
173 ScoopInfo *s = SCOOP(dev);
176 qdev_init_gpio_out(dev, s->handler, 16);
177 qdev_init_gpio_in(dev, scoop_gpio_set, 16);
178 memory_region_init_io(&s->iomem, OBJECT(s), &scoop_ops, s, "scoop", 0x1000);
180 sysbus_init_mmio(sbd, &s->iomem);
185 static int scoop_post_load(void *opaque, int version_id)
187 ScoopInfo *s = (ScoopInfo *) opaque;
191 level = s->gpio_level & s->gpio_dir;
193 for (i = 0; i < 16; i++) {
194 qemu_set_irq(s->handler[i], (level >> i) & 1);
197 s->prev_level = level;
202 static bool is_version_0 (void *opaque, int version_id)
204 return version_id == 0;
207 static bool vmstate_scoop_validate(void *opaque, int version_id)
209 ScoopInfo *s = opaque;
211 return !(s->prev_level & 0xffff0000) &&
212 !(s->gpio_level & 0xffff0000) &&
213 !(s->gpio_dir & 0xffff0000);
216 static const VMStateDescription vmstate_scoop_regs = {
219 .minimum_version_id = 0,
220 .post_load = scoop_post_load,
221 .fields = (VMStateField[]) {
222 VMSTATE_UINT16(status, ScoopInfo),
223 VMSTATE_UINT16(power, ScoopInfo),
224 VMSTATE_UINT32(gpio_level, ScoopInfo),
225 VMSTATE_UINT32(gpio_dir, ScoopInfo),
226 VMSTATE_UINT32(prev_level, ScoopInfo),
227 VMSTATE_VALIDATE("irq levels are 16 bit", vmstate_scoop_validate),
228 VMSTATE_UINT16(mcr, ScoopInfo),
229 VMSTATE_UINT16(cdr, ScoopInfo),
230 VMSTATE_UINT16(ccr, ScoopInfo),
231 VMSTATE_UINT16(irr, ScoopInfo),
232 VMSTATE_UINT16(imr, ScoopInfo),
233 VMSTATE_UINT16(isr, ScoopInfo),
234 VMSTATE_UNUSED_TEST(is_version_0, 2),
235 VMSTATE_END_OF_LIST(),
239 static void scoop_sysbus_class_init(ObjectClass *klass, void *data)
241 DeviceClass *dc = DEVICE_CLASS(klass);
242 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
244 k->init = scoop_init;
245 dc->desc = "Scoop2 Sharp custom ASIC";
246 dc->vmsd = &vmstate_scoop_regs;
249 static const TypeInfo scoop_sysbus_info = {
251 .parent = TYPE_SYS_BUS_DEVICE,
252 .instance_size = sizeof(ScoopInfo),
253 .class_init = scoop_sysbus_class_init,
256 static void scoop_register_types(void)
258 type_register_static(&scoop_sysbus_info);
261 type_init(scoop_register_types)
263 /* Write the bootloader parameters memory area. */
265 #define MAGIC_CHG(a, b, c, d) ((d << 24) | (c << 16) | (b << 8) | a)
267 static struct QEMU_PACKED sl_param_info {
268 uint32_t comadj_keyword;
271 uint32_t uuid_keyword;
274 uint32_t touch_keyword;
280 uint32_t adadj_keyword;
283 uint32_t phad_keyword;
285 } zaurus_bootparam = {
286 .comadj_keyword = MAGIC_CHG('C', 'M', 'A', 'D'),
288 .uuid_keyword = MAGIC_CHG('U', 'U', 'I', 'D'),
290 .touch_keyword = MAGIC_CHG('T', 'U', 'C', 'H'),
292 .adadj_keyword = MAGIC_CHG('B', 'V', 'A', 'D'),
294 .phad_keyword = MAGIC_CHG('P', 'H', 'A', 'D'),
298 void sl_bootparam_write(hwaddr ptr)
300 cpu_physical_memory_write(ptr, &zaurus_bootparam,
301 sizeof(struct sl_param_info));