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-rw-r--r--hw/gpio/zaurus.c292
1 files changed, 292 insertions, 0 deletions
diff --git a/hw/gpio/zaurus.c b/hw/gpio/zaurus.c
new file mode 100644
index 0000000000..d853ea1310
--- /dev/null
+++ b/hw/gpio/zaurus.c
@@ -0,0 +1,292 @@
+/*
+ * Copyright (c) 2006-2008 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 or
+ * (at your option) version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "hw/hw.h"
+#include "hw/arm/sharpsl.h"
+#include "hw/sysbus.h"
+
+#undef REG_FMT
+#define REG_FMT "0x%02lx"
+
+/* SCOOP devices */
+
+typedef struct ScoopInfo ScoopInfo;
+struct ScoopInfo {
+ SysBusDevice busdev;
+ qemu_irq handler[16];
+ MemoryRegion iomem;
+ uint16_t status;
+ uint16_t power;
+ uint32_t gpio_level;
+ uint32_t gpio_dir;
+ uint32_t prev_level;
+
+ uint16_t mcr;
+ uint16_t cdr;
+ uint16_t ccr;
+ uint16_t irr;
+ uint16_t imr;
+ uint16_t isr;
+};
+
+#define SCOOP_MCR 0x00
+#define SCOOP_CDR 0x04
+#define SCOOP_CSR 0x08
+#define SCOOP_CPR 0x0c
+#define SCOOP_CCR 0x10
+#define SCOOP_IRR_IRM 0x14
+#define SCOOP_IMR 0x18
+#define SCOOP_ISR 0x1c
+#define SCOOP_GPCR 0x20
+#define SCOOP_GPWR 0x24
+#define SCOOP_GPRR 0x28
+
+static inline void scoop_gpio_handler_update(ScoopInfo *s) {
+ uint32_t level, diff;
+ int bit;
+ level = s->gpio_level & s->gpio_dir;
+
+ for (diff = s->prev_level ^ level; diff; diff ^= 1 << bit) {
+ bit = ffs(diff) - 1;
+ qemu_set_irq(s->handler[bit], (level >> bit) & 1);
+ }
+
+ s->prev_level = level;
+}
+
+static uint64_t scoop_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ ScoopInfo *s = (ScoopInfo *) opaque;
+
+ switch (addr & 0x3f) {
+ case SCOOP_MCR:
+ return s->mcr;
+ case SCOOP_CDR:
+ return s->cdr;
+ case SCOOP_CSR:
+ return s->status;
+ case SCOOP_CPR:
+ return s->power;
+ case SCOOP_CCR:
+ return s->ccr;
+ case SCOOP_IRR_IRM:
+ return s->irr;
+ case SCOOP_IMR:
+ return s->imr;
+ case SCOOP_ISR:
+ return s->isr;
+ case SCOOP_GPCR:
+ return s->gpio_dir;
+ case SCOOP_GPWR:
+ case SCOOP_GPRR:
+ return s->gpio_level;
+ default:
+ zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
+ }
+
+ return 0;
+}
+
+static void scoop_write(void *opaque, hwaddr addr,
+ uint64_t value, unsigned size)
+{
+ ScoopInfo *s = (ScoopInfo *) opaque;
+ value &= 0xffff;
+
+ switch (addr & 0x3f) {
+ case SCOOP_MCR:
+ s->mcr = value;
+ break;
+ case SCOOP_CDR:
+ s->cdr = value;
+ break;
+ case SCOOP_CPR:
+ s->power = value;
+ if (value & 0x80)
+ s->power |= 0x8040;
+ break;
+ case SCOOP_CCR:
+ s->ccr = value;
+ break;
+ case SCOOP_IRR_IRM:
+ s->irr = value;
+ break;
+ case SCOOP_IMR:
+ s->imr = value;
+ break;
+ case SCOOP_ISR:
+ s->isr = value;
+ break;
+ case SCOOP_GPCR:
+ s->gpio_dir = value;
+ scoop_gpio_handler_update(s);
+ break;
+ case SCOOP_GPWR:
+ case SCOOP_GPRR: /* GPRR is probably R/O in real HW */
+ s->gpio_level = value & s->gpio_dir;
+ scoop_gpio_handler_update(s);
+ break;
+ default:
+ zaurus_printf("Bad register offset " REG_FMT "\n", (unsigned long)addr);
+ }
+}
+
+static const MemoryRegionOps scoop_ops = {
+ .read = scoop_read,
+ .write = scoop_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static void scoop_gpio_set(void *opaque, int line, int level)
+{
+ ScoopInfo *s = (ScoopInfo *) opaque;
+
+ if (level)
+ s->gpio_level |= (1 << line);
+ else
+ s->gpio_level &= ~(1 << line);
+}
+
+static int scoop_init(SysBusDevice *dev)
+{
+ ScoopInfo *s = FROM_SYSBUS(ScoopInfo, dev);
+
+ s->status = 0x02;
+ qdev_init_gpio_out(&s->busdev.qdev, s->handler, 16);
+ qdev_init_gpio_in(&s->busdev.qdev, scoop_gpio_set, 16);
+ memory_region_init_io(&s->iomem, &scoop_ops, s, "scoop", 0x1000);
+
+ sysbus_init_mmio(dev, &s->iomem);
+
+ return 0;
+}
+
+static int scoop_post_load(void *opaque, int version_id)
+{
+ ScoopInfo *s = (ScoopInfo *) opaque;
+ int i;
+ uint32_t level;
+
+ level = s->gpio_level & s->gpio_dir;
+
+ for (i = 0; i < 16; i++) {
+ qemu_set_irq(s->handler[i], (level >> i) & 1);
+ }
+
+ s->prev_level = level;
+
+ return 0;
+}
+
+static bool is_version_0 (void *opaque, int version_id)
+{
+ return version_id == 0;
+}
+
+static const VMStateDescription vmstate_scoop_regs = {
+ .name = "scoop",
+ .version_id = 1,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = scoop_post_load,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT16(status, ScoopInfo),
+ VMSTATE_UINT16(power, ScoopInfo),
+ VMSTATE_UINT32(gpio_level, ScoopInfo),
+ VMSTATE_UINT32(gpio_dir, ScoopInfo),
+ VMSTATE_UINT32(prev_level, ScoopInfo),
+ VMSTATE_UINT16(mcr, ScoopInfo),
+ VMSTATE_UINT16(cdr, ScoopInfo),
+ VMSTATE_UINT16(ccr, ScoopInfo),
+ VMSTATE_UINT16(irr, ScoopInfo),
+ VMSTATE_UINT16(imr, ScoopInfo),
+ VMSTATE_UINT16(isr, ScoopInfo),
+ VMSTATE_UNUSED_TEST(is_version_0, 2),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static Property scoop_sysbus_properties[] = {
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void scoop_sysbus_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = scoop_init;
+ dc->desc = "Scoop2 Sharp custom ASIC";
+ dc->vmsd = &vmstate_scoop_regs;
+ dc->props = scoop_sysbus_properties;
+}
+
+static const TypeInfo scoop_sysbus_info = {
+ .name = "scoop",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(ScoopInfo),
+ .class_init = scoop_sysbus_class_init,
+};
+
+static void scoop_register_types(void)
+{
+ type_register_static(&scoop_sysbus_info);
+}
+
+type_init(scoop_register_types)
+
+/* Write the bootloader parameters memory area. */
+
+#define MAGIC_CHG(a, b, c, d) ((d << 24) | (c << 16) | (b << 8) | a)
+
+static struct QEMU_PACKED sl_param_info {
+ uint32_t comadj_keyword;
+ int32_t comadj;
+
+ uint32_t uuid_keyword;
+ char uuid[16];
+
+ uint32_t touch_keyword;
+ int32_t touch_xp;
+ int32_t touch_yp;
+ int32_t touch_xd;
+ int32_t touch_yd;
+
+ uint32_t adadj_keyword;
+ int32_t adadj;
+
+ uint32_t phad_keyword;
+ int32_t phadadj;
+} zaurus_bootparam = {
+ .comadj_keyword = MAGIC_CHG('C', 'M', 'A', 'D'),
+ .comadj = 125,
+ .uuid_keyword = MAGIC_CHG('U', 'U', 'I', 'D'),
+ .uuid = { -1 },
+ .touch_keyword = MAGIC_CHG('T', 'U', 'C', 'H'),
+ .touch_xp = -1,
+ .adadj_keyword = MAGIC_CHG('B', 'V', 'A', 'D'),
+ .adadj = -1,
+ .phad_keyword = MAGIC_CHG('P', 'H', 'A', 'D'),
+ .phadadj = 0x01,
+};
+
+void sl_bootparam_write(hwaddr ptr)
+{
+ cpu_physical_memory_write(ptr, (void *)&zaurus_bootparam,
+ sizeof(struct sl_param_info));
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-26 04:44:24 +0000