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