--- /dev/null
+/*
+ * QEMU M48T59 and M48T08 NVRAM emulation for PPC PREP and Sparc platforms
+ *
+ * Copyright (c) 2003-2005, 2007 Jocelyn Mayer
+ * Copyright (c) 2013 Hervé Poussineau
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "hw/hw.h"
+#include "hw/timer/m48t59.h"
+#include "qemu/timer.h"
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+#include "hw/isa/isa.h"
+#include "exec/address-spaces.h"
+
+//#define DEBUG_NVRAM
+
+#if defined(DEBUG_NVRAM)
+#define NVRAM_PRINTF(fmt, ...) do { printf(fmt , ## __VA_ARGS__); } while (0)
+#else
+#define NVRAM_PRINTF(fmt, ...) do { } while (0)
+#endif
+
+#define TYPE_M48TXX_SYS_BUS "sysbus-m48txx"
+#define M48TXX_SYS_BUS_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(M48txxSysBusDeviceClass, (obj), TYPE_M48TXX_SYS_BUS)
+#define M48TXX_SYS_BUS_CLASS(klass) \
+ OBJECT_CLASS_CHECK(M48txxSysBusDeviceClass, (klass), TYPE_M48TXX_SYS_BUS)
+#define M48TXX_SYS_BUS(obj) \
+ OBJECT_CHECK(M48txxSysBusState, (obj), TYPE_M48TXX_SYS_BUS)
+
+#define TYPE_M48TXX_ISA "isa-m48txx"
+#define M48TXX_ISA_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(M48txxISADeviceClass, (obj), TYPE_M48TXX_ISA)
+#define M48TXX_ISA_CLASS(klass) \
+ OBJECT_CLASS_CHECK(M48txxISADeviceClass, (klass), TYPE_M48TXX_ISA)
+#define M48TXX_ISA(obj) \
+ OBJECT_CHECK(M48txxISAState, (obj), TYPE_M48TXX_ISA)
+
+/*
+ * The M48T02, M48T08 and M48T59 chips are very similar. The newer '59 has
+ * alarm and a watchdog timer and related control registers. In the
+ * PPC platform there is also a nvram lock function.
+ */
+
+typedef struct M48txxInfo {
+ const char *isa_name;
+ const char *sysbus_name;
+ uint32_t model; /* 2 = m48t02, 8 = m48t08, 59 = m48t59 */
+ uint32_t size;
+} M48txxInfo;
+
+/*
+ * Chipset docs:
+ * http://www.st.com/stonline/products/literature/ds/2410/m48t02.pdf
+ * http://www.st.com/stonline/products/literature/ds/2411/m48t08.pdf
+ * http://www.st.com/stonline/products/literature/od/7001/m48t59y.pdf
+ */
+
+typedef struct M48t59State {
+ /* Hardware parameters */
+ qemu_irq IRQ;
+ MemoryRegion iomem;
+ uint32_t size;
+ int32_t base_year;
+ /* RTC management */
+ time_t time_offset;
+ time_t stop_time;
+ /* Alarm & watchdog */
+ struct tm alarm;
+ QEMUTimer *alrm_timer;
+ QEMUTimer *wd_timer;
+ /* NVRAM storage */
+ uint8_t *buffer;
+ /* Model parameters */
+ uint32_t model; /* 2 = m48t02, 8 = m48t08, 59 = m48t59 */
+ /* NVRAM storage */
+ uint16_t addr;
+ uint8_t lock;
+} M48t59State;
+
+typedef struct M48txxISAState {
+ ISADevice parent_obj;
+ M48t59State state;
+ uint32_t io_base;
+ MemoryRegion io;
+} M48txxISAState;
+
+typedef struct M48txxISADeviceClass {
+ ISADeviceClass parent_class;
+ M48txxInfo info;
+} M48txxISADeviceClass;
+
+typedef struct M48txxSysBusState {
+ SysBusDevice parent_obj;
+ M48t59State state;
+ MemoryRegion io;
+} M48txxSysBusState;
+
+typedef struct M48txxSysBusDeviceClass {
+ SysBusDeviceClass parent_class;
+ M48txxInfo info;
+} M48txxSysBusDeviceClass;
+
+static M48txxInfo m48txx_info[] = {
+ {
+ .sysbus_name = "sysbus-m48t02",
+ .model = 2,
+ .size = 0x800,
+ },{
+ .sysbus_name = "sysbus-m48t08",
+ .model = 8,
+ .size = 0x2000,
+ },{
+ .sysbus_name = "sysbus-m48t59",
+ .model = 59,
+ .size = 0x2000,
+ },{
+ .isa_name = "isa-m48t59",
+ .model = 59,
+ .size = 0x2000,
+ }
+};
+
+
+/* Fake timer functions */
+
+/* Alarm management */
+static void alarm_cb (void *opaque)
+{
+ struct tm tm;
+ uint64_t next_time;
+ M48t59State *NVRAM = opaque;
+
+ qemu_set_irq(NVRAM->IRQ, 1);
+ if ((NVRAM->buffer[0x1FF5] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF4] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+ /* Repeat once a month */
+ qemu_get_timedate(&tm, NVRAM->time_offset);
+ tm.tm_mon++;
+ if (tm.tm_mon == 13) {
+ tm.tm_mon = 1;
+ tm.tm_year++;
+ }
+ next_time = qemu_timedate_diff(&tm) - NVRAM->time_offset;
+ } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF4] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+ /* Repeat once a day */
+ next_time = 24 * 60 * 60;
+ } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF4] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF3] & 0x80) == 0 &&
+ (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+ /* Repeat once an hour */
+ next_time = 60 * 60;
+ } else if ((NVRAM->buffer[0x1FF5] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF4] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF3] & 0x80) != 0 &&
+ (NVRAM->buffer[0x1FF2] & 0x80) == 0) {
+ /* Repeat once a minute */
+ next_time = 60;
+ } else {
+ /* Repeat once a second */
+ next_time = 1;
+ }
+ timer_mod(NVRAM->alrm_timer, qemu_clock_get_ns(rtc_clock) +
+ next_time * 1000);
+ qemu_set_irq(NVRAM->IRQ, 0);
+}
+
+static void set_alarm(M48t59State *NVRAM)
+{
+ int diff;
+ if (NVRAM->alrm_timer != NULL) {
+ timer_del(NVRAM->alrm_timer);
+ diff = qemu_timedate_diff(&NVRAM->alarm) - NVRAM->time_offset;
+ if (diff > 0)
+ timer_mod(NVRAM->alrm_timer, diff * 1000);
+ }
+}
+
+/* RTC management helpers */
+static inline void get_time(M48t59State *NVRAM, struct tm *tm)
+{
+ qemu_get_timedate(tm, NVRAM->time_offset);
+}
+
+static void set_time(M48t59State *NVRAM, struct tm *tm)
+{
+ NVRAM->time_offset = qemu_timedate_diff(tm);
+ set_alarm(NVRAM);
+}
+
+/* Watchdog management */
+static void watchdog_cb (void *opaque)
+{
+ M48t59State *NVRAM = opaque;
+
+ NVRAM->buffer[0x1FF0] |= 0x80;
+ if (NVRAM->buffer[0x1FF7] & 0x80) {
+ NVRAM->buffer[0x1FF7] = 0x00;
+ NVRAM->buffer[0x1FFC] &= ~0x40;
+ /* May it be a hw CPU Reset instead ? */
+ qemu_system_reset_request();
+ } else {
+ qemu_set_irq(NVRAM->IRQ, 1);
+ qemu_set_irq(NVRAM->IRQ, 0);
+ }
+}
+
+static void set_up_watchdog(M48t59State *NVRAM, uint8_t value)
+{
+ uint64_t interval; /* in 1/16 seconds */
+
+ NVRAM->buffer[0x1FF0] &= ~0x80;
+ if (NVRAM->wd_timer != NULL) {
+ timer_del(NVRAM->wd_timer);
+ if (value != 0) {
+ interval = (1 << (2 * (value & 0x03))) * ((value >> 2) & 0x1F);
+ timer_mod(NVRAM->wd_timer, ((uint64_t)time(NULL) * 1000) +
+ ((interval * 1000) >> 4));
+ }
+ }
+}
+
+/* Direct access to NVRAM */
+static void m48t59_write(M48t59State *NVRAM, uint32_t addr, uint32_t val)
+{
+ struct tm tm;
+ int tmp;
+
+ if (addr > 0x1FF8 && addr < 0x2000)
+ NVRAM_PRINTF("%s: 0x%08x => 0x%08x\n", __func__, addr, val);
+
+ /* check for NVRAM access */
+ if ((NVRAM->model == 2 && addr < 0x7f8) ||
+ (NVRAM->model == 8 && addr < 0x1ff8) ||
+ (NVRAM->model == 59 && addr < 0x1ff0)) {
+ goto do_write;
+ }
+
+ /* TOD access */
+ switch (addr) {
+ case 0x1FF0:
+ /* flags register : read-only */
+ break;
+ case 0x1FF1:
+ /* unused */
+ break;
+ case 0x1FF2:
+ /* alarm seconds */
+ tmp = from_bcd(val & 0x7F);
+ if (tmp >= 0 && tmp <= 59) {
+ NVRAM->alarm.tm_sec = tmp;
+ NVRAM->buffer[0x1FF2] = val;
+ set_alarm(NVRAM);
+ }
+ break;
+ case 0x1FF3:
+ /* alarm minutes */
+ tmp = from_bcd(val & 0x7F);
+ if (tmp >= 0 && tmp <= 59) {
+ NVRAM->alarm.tm_min = tmp;
+ NVRAM->buffer[0x1FF3] = val;
+ set_alarm(NVRAM);
+ }
+ break;
+ case 0x1FF4:
+ /* alarm hours */
+ tmp = from_bcd(val & 0x3F);
+ if (tmp >= 0 && tmp <= 23) {
+ NVRAM->alarm.tm_hour = tmp;
+ NVRAM->buffer[0x1FF4] = val;
+ set_alarm(NVRAM);
+ }
+ break;
+ case 0x1FF5:
+ /* alarm date */
+ tmp = from_bcd(val & 0x3F);
+ if (tmp != 0) {
+ NVRAM->alarm.tm_mday = tmp;
+ NVRAM->buffer[0x1FF5] = val;
+ set_alarm(NVRAM);
+ }
+ break;
+ case 0x1FF6:
+ /* interrupts */
+ NVRAM->buffer[0x1FF6] = val;
+ break;
+ case 0x1FF7:
+ /* watchdog */
+ NVRAM->buffer[0x1FF7] = val;
+ set_up_watchdog(NVRAM, val);
+ break;
+ case 0x1FF8:
+ case 0x07F8:
+ /* control */
+ NVRAM->buffer[addr] = (val & ~0xA0) | 0x90;
+ break;
+ case 0x1FF9:
+ case 0x07F9:
+ /* seconds (BCD) */
+ tmp = from_bcd(val & 0x7F);
+ if (tmp >= 0 && tmp <= 59) {
+ get_time(NVRAM, &tm);
+ tm.tm_sec = tmp;
+ set_time(NVRAM, &tm);
+ }
+ if ((val & 0x80) ^ (NVRAM->buffer[addr] & 0x80)) {
+ if (val & 0x80) {
+ NVRAM->stop_time = time(NULL);
+ } else {
+ NVRAM->time_offset += NVRAM->stop_time - time(NULL);
+ NVRAM->stop_time = 0;
+ }
+ }
+ NVRAM->buffer[addr] = val & 0x80;
+ break;
+ case 0x1FFA:
+ case 0x07FA:
+ /* minutes (BCD) */
+ tmp = from_bcd(val & 0x7F);
+ if (tmp >= 0 && tmp <= 59) {
+ get_time(NVRAM, &tm);
+ tm.tm_min = tmp;
+ set_time(NVRAM, &tm);
+ }
+ break;
+ case 0x1FFB:
+ case 0x07FB:
+ /* hours (BCD) */
+ tmp = from_bcd(val & 0x3F);
+ if (tmp >= 0 && tmp <= 23) {
+ get_time(NVRAM, &tm);
+ tm.tm_hour = tmp;
+ set_time(NVRAM, &tm);
+ }
+ break;
+ case 0x1FFC:
+ case 0x07FC:
+ /* day of the week / century */
+ tmp = from_bcd(val & 0x07);
+ get_time(NVRAM, &tm);
+ tm.tm_wday = tmp;
+ set_time(NVRAM, &tm);
+ NVRAM->buffer[addr] = val & 0x40;
+ break;
+ case 0x1FFD:
+ case 0x07FD:
+ /* date (BCD) */
+ tmp = from_bcd(val & 0x3F);
+ if (tmp != 0) {
+ get_time(NVRAM, &tm);
+ tm.tm_mday = tmp;
+ set_time(NVRAM, &tm);
+ }
+ break;
+ case 0x1FFE:
+ case 0x07FE:
+ /* month */
+ tmp = from_bcd(val & 0x1F);
+ if (tmp >= 1 && tmp <= 12) {
+ get_time(NVRAM, &tm);
+ tm.tm_mon = tmp - 1;
+ set_time(NVRAM, &tm);
+ }
+ break;
+ case 0x1FFF:
+ case 0x07FF:
+ /* year */
+ tmp = from_bcd(val);
+ if (tmp >= 0 && tmp <= 99) {
+ get_time(NVRAM, &tm);
+ tm.tm_year = from_bcd(val) + NVRAM->base_year - 1900;
+ set_time(NVRAM, &tm);
+ }
+ break;
+ default:
+ /* Check lock registers state */
+ if (addr >= 0x20 && addr <= 0x2F && (NVRAM->lock & 1))
+ break;
+ if (addr >= 0x30 && addr <= 0x3F && (NVRAM->lock & 2))
+ break;
+ do_write:
+ if (addr < NVRAM->size) {
+ NVRAM->buffer[addr] = val & 0xFF;
+ }
+ break;
+ }
+}
+
+static uint32_t m48t59_read(M48t59State *NVRAM, uint32_t addr)
+{
+ struct tm tm;
+ uint32_t retval = 0xFF;
+
+ /* check for NVRAM access */
+ if ((NVRAM->model == 2 && addr < 0x078f) ||
+ (NVRAM->model == 8 && addr < 0x1ff8) ||
+ (NVRAM->model == 59 && addr < 0x1ff0)) {
+ goto do_read;
+ }
+
+ /* TOD access */
+ switch (addr) {
+ case 0x1FF0:
+ /* flags register */
+ goto do_read;
+ case 0x1FF1:
+ /* unused */
+ retval = 0;
+ break;
+ case 0x1FF2:
+ /* alarm seconds */
+ goto do_read;
+ case 0x1FF3:
+ /* alarm minutes */
+ goto do_read;
+ case 0x1FF4:
+ /* alarm hours */
+ goto do_read;
+ case 0x1FF5:
+ /* alarm date */
+ goto do_read;
+ case 0x1FF6:
+ /* interrupts */
+ goto do_read;
+ case 0x1FF7:
+ /* A read resets the watchdog */
+ set_up_watchdog(NVRAM, NVRAM->buffer[0x1FF7]);
+ goto do_read;
+ case 0x1FF8:
+ case 0x07F8:
+ /* control */
+ goto do_read;
+ case 0x1FF9:
+ case 0x07F9:
+ /* seconds (BCD) */
+ get_time(NVRAM, &tm);
+ retval = (NVRAM->buffer[addr] & 0x80) | to_bcd(tm.tm_sec);
+ break;
+ case 0x1FFA:
+ case 0x07FA:
+ /* minutes (BCD) */
+ get_time(NVRAM, &tm);
+ retval = to_bcd(tm.tm_min);
+ break;
+ case 0x1FFB:
+ case 0x07FB:
+ /* hours (BCD) */
+ get_time(NVRAM, &tm);
+ retval = to_bcd(tm.tm_hour);
+ break;
+ case 0x1FFC:
+ case 0x07FC:
+ /* day of the week / century */
+ get_time(NVRAM, &tm);
+ retval = NVRAM->buffer[addr] | tm.tm_wday;
+ break;
+ case 0x1FFD:
+ case 0x07FD:
+ /* date */
+ get_time(NVRAM, &tm);
+ retval = to_bcd(tm.tm_mday);
+ break;
+ case 0x1FFE:
+ case 0x07FE:
+ /* month */
+ get_time(NVRAM, &tm);
+ retval = to_bcd(tm.tm_mon + 1);
+ break;
+ case 0x1FFF:
+ case 0x07FF:
+ /* year */
+ get_time(NVRAM, &tm);
+ retval = to_bcd((tm.tm_year + 1900 - NVRAM->base_year) % 100);
+ break;
+ default:
+ /* Check lock registers state */
+ if (addr >= 0x20 && addr <= 0x2F && (NVRAM->lock & 1))
+ break;
+ if (addr >= 0x30 && addr <= 0x3F && (NVRAM->lock & 2))
+ break;
+ do_read:
+ if (addr < NVRAM->size) {
+ retval = NVRAM->buffer[addr];
+ }
+ break;
+ }
+ if (addr > 0x1FF9 && addr < 0x2000)
+ NVRAM_PRINTF("%s: 0x%08x <= 0x%08x\n", __func__, addr, retval);
+
+ return retval;
+}
+
+static void m48t59_toggle_lock(M48t59State *NVRAM, int lock)
+{
+ NVRAM->lock ^= 1 << lock;
+}
+
+/* IO access to NVRAM */
+static void NVRAM_writeb(void *opaque, hwaddr addr, uint64_t val,
+ unsigned size)
+{
+ M48t59State *NVRAM = opaque;
+
+ NVRAM_PRINTF("%s: 0x%08x => 0x%08x\n", __func__, addr, val);
+ switch (addr) {
+ case 0:
+ NVRAM->addr &= ~0x00FF;
+ NVRAM->addr |= val;
+ break;
+ case 1:
+ NVRAM->addr &= ~0xFF00;
+ NVRAM->addr |= val << 8;
+ break;
+ case 3:
+ m48t59_write(NVRAM, NVRAM->addr, val);
+ NVRAM->addr = 0x0000;
+ break;
+ default:
+ break;
+ }
+}
+
+static uint64_t NVRAM_readb(void *opaque, hwaddr addr, unsigned size)
+{
+ M48t59State *NVRAM = opaque;
+ uint32_t retval;
+
+ switch (addr) {
+ case 3:
+ retval = m48t59_read(NVRAM, NVRAM->addr);
+ break;
+ default:
+ retval = -1;
+ break;
+ }
+ NVRAM_PRINTF("%s: 0x%08x <= 0x%08x\n", __func__, addr, retval);
+
+ return retval;
+}
+
+static void nvram_writeb (void *opaque, hwaddr addr, uint32_t value)
+{
+ M48t59State *NVRAM = opaque;
+
+ m48t59_write(NVRAM, addr, value & 0xff);
+}
+
+static void nvram_writew (void *opaque, hwaddr addr, uint32_t value)
+{
+ M48t59State *NVRAM = opaque;
+
+ m48t59_write(NVRAM, addr, (value >> 8) & 0xff);
+ m48t59_write(NVRAM, addr + 1, value & 0xff);
+}
+
+static void nvram_writel (void *opaque, hwaddr addr, uint32_t value)
+{
+ M48t59State *NVRAM = opaque;
+
+ m48t59_write(NVRAM, addr, (value >> 24) & 0xff);
+ m48t59_write(NVRAM, addr + 1, (value >> 16) & 0xff);
+ m48t59_write(NVRAM, addr + 2, (value >> 8) & 0xff);
+ m48t59_write(NVRAM, addr + 3, value & 0xff);
+}
+
+static uint32_t nvram_readb (void *opaque, hwaddr addr)
+{
+ M48t59State *NVRAM = opaque;
+ uint32_t retval;
+
+ retval = m48t59_read(NVRAM, addr);
+ return retval;
+}
+
+static uint32_t nvram_readw (void *opaque, hwaddr addr)
+{
+ M48t59State *NVRAM = opaque;
+ uint32_t retval;
+
+ retval = m48t59_read(NVRAM, addr) << 8;
+ retval |= m48t59_read(NVRAM, addr + 1);
+ return retval;
+}
+
+static uint32_t nvram_readl (void *opaque, hwaddr addr)
+{
+ M48t59State *NVRAM = opaque;
+ uint32_t retval;
+
+ retval = m48t59_read(NVRAM, addr) << 24;
+ retval |= m48t59_read(NVRAM, addr + 1) << 16;
+ retval |= m48t59_read(NVRAM, addr + 2) << 8;
+ retval |= m48t59_read(NVRAM, addr + 3);
+ return retval;
+}
+
+static const MemoryRegionOps nvram_ops = {
+ .old_mmio = {
+ .read = { nvram_readb, nvram_readw, nvram_readl, },
+ .write = { nvram_writeb, nvram_writew, nvram_writel, },
+ },
+ .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_m48t59 = {
+ .name = "m48t59",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(lock, M48t59State),
+ VMSTATE_UINT16(addr, M48t59State),
+ VMSTATE_VBUFFER_UINT32(buffer, M48t59State, 0, NULL, 0, size),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void m48t59_reset_common(M48t59State *NVRAM)
+{
+ NVRAM->addr = 0;
+ NVRAM->lock = 0;
+ if (NVRAM->alrm_timer != NULL)
+ timer_del(NVRAM->alrm_timer);
+
+ if (NVRAM->wd_timer != NULL)
+ timer_del(NVRAM->wd_timer);
+}
+
+static void m48t59_reset_isa(DeviceState *d)
+{
+ M48txxISAState *isa = M48TXX_ISA(d);
+ M48t59State *NVRAM = &isa->state;
+
+ m48t59_reset_common(NVRAM);
+}
+
+static void m48t59_reset_sysbus(DeviceState *d)
+{
+ M48txxSysBusState *sys = M48TXX_SYS_BUS(d);
+ M48t59State *NVRAM = &sys->state;
+
+ m48t59_reset_common(NVRAM);
+}
+
+static const MemoryRegionOps m48t59_io_ops = {
+ .read = NVRAM_readb,
+ .write = NVRAM_writeb,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+/* Initialisation routine */
+Nvram *m48t59_init(qemu_irq IRQ, hwaddr mem_base,
+ uint32_t io_base, uint16_t size, int base_year,
+ int model)
+{
+ DeviceState *dev;
+ SysBusDevice *s;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(m48txx_info); i++) {
+ if (!m48txx_info[i].sysbus_name ||
+ m48txx_info[i].size != size ||
+ m48txx_info[i].model != model) {
+ continue;
+ }
+
+ dev = qdev_create(NULL, m48txx_info[i].sysbus_name);
+ qdev_prop_set_int32(dev, "base-year", base_year);
+ qdev_init_nofail(dev);
+ s = SYS_BUS_DEVICE(dev);
+ sysbus_connect_irq(s, 0, IRQ);
+ if (io_base != 0) {
+ memory_region_add_subregion(get_system_io(), io_base,
+ sysbus_mmio_get_region(s, 1));
+ }
+ if (mem_base != 0) {
+ sysbus_mmio_map(s, 0, mem_base);
+ }
+
+ return NVRAM(s);
+ }
+
+ assert(false);
+ return NULL;
+}
+
+Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size,
+ int base_year, int model)
+{
+ DeviceState *dev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(m48txx_info); i++) {
+ if (!m48txx_info[i].isa_name ||
+ m48txx_info[i].size != size ||
+ m48txx_info[i].model != model) {
+ continue;
+ }
+
+ dev = DEVICE(isa_create(bus, m48txx_info[i].isa_name));
+ qdev_prop_set_uint32(dev, "iobase", io_base);
+ qdev_prop_set_int32(dev, "base-year", base_year);
+ qdev_init_nofail(dev);
+ return NVRAM(dev);
+ }
+
+ assert(false);
+ return NULL;
+}
+
+static void m48t59_realize_common(M48t59State *s, Error **errp)
+{
+ s->buffer = g_malloc0(s->size);
+ if (s->model == 59) {
+ s->alrm_timer = timer_new_ns(rtc_clock, &alarm_cb, s);
+ s->wd_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &watchdog_cb, s);
+ }
+ qemu_get_timedate(&s->alarm, 0);
+
+ vmstate_register(NULL, -1, &vmstate_m48t59, s);
+}
+
+static void m48t59_isa_realize(DeviceState *dev, Error **errp)
+{
+ M48txxISADeviceClass *u = M48TXX_ISA_GET_CLASS(dev);
+ ISADevice *isadev = ISA_DEVICE(dev);
+ M48txxISAState *d = M48TXX_ISA(dev);
+ M48t59State *s = &d->state;
+
+ s->model = u->info.model;
+ s->size = u->info.size;
+ isa_init_irq(isadev, &s->IRQ, 8);
+ m48t59_realize_common(s, errp);
+ memory_region_init_io(&d->io, OBJECT(dev), &m48t59_io_ops, s, "m48t59", 4);
+ if (d->io_base != 0) {
+ isa_register_ioport(isadev, &d->io, d->io_base);
+ }
+}
+
+static int m48t59_init1(SysBusDevice *dev)
+{
+ M48txxSysBusDeviceClass *u = M48TXX_SYS_BUS_GET_CLASS(dev);
+ M48txxSysBusState *d = M48TXX_SYS_BUS(dev);
+ Object *o = OBJECT(dev);
+ M48t59State *s = &d->state;
+ Error *err = NULL;
+
+ s->model = u->info.model;
+ s->size = u->info.size;
+ sysbus_init_irq(dev, &s->IRQ);
+
+ memory_region_init_io(&s->iomem, o, &nvram_ops, s, "m48t59.nvram",
+ s->size);
+ memory_region_init_io(&d->io, o, &m48t59_io_ops, s, "m48t59", 4);
+ sysbus_init_mmio(dev, &s->iomem);
+ sysbus_init_mmio(dev, &d->io);
+ m48t59_realize_common(s, &err);
+ if (err != NULL) {
+ error_free(err);
+ return -1;
+ }
+
+ return 0;
+}
+
+static uint32_t m48txx_isa_read(Nvram *obj, uint32_t addr)
+{
+ M48txxISAState *d = M48TXX_ISA(obj);
+ return m48t59_read(&d->state, addr);
+}
+
+static void m48txx_isa_write(Nvram *obj, uint32_t addr, uint32_t val)
+{
+ M48txxISAState *d = M48TXX_ISA(obj);
+ m48t59_write(&d->state, addr, val);
+}
+
+static void m48txx_isa_toggle_lock(Nvram *obj, int lock)
+{
+ M48txxISAState *d = M48TXX_ISA(obj);
+ m48t59_toggle_lock(&d->state, lock);
+}
+
+static Property m48t59_isa_properties[] = {
+ DEFINE_PROP_INT32("base-year", M48txxISAState, state.base_year, 0),
+ DEFINE_PROP_UINT32("iobase", M48txxISAState, io_base, 0x74),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void m48txx_isa_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ NvramClass *nc = NVRAM_CLASS(klass);
+
+ dc->realize = m48t59_isa_realize;
+ dc->reset = m48t59_reset_isa;
+ dc->props = m48t59_isa_properties;
+ nc->read = m48txx_isa_read;
+ nc->write = m48txx_isa_write;
+ nc->toggle_lock = m48txx_isa_toggle_lock;
+}
+
+static void m48txx_isa_concrete_class_init(ObjectClass *klass, void *data)
+{
+ M48txxISADeviceClass *u = M48TXX_ISA_CLASS(klass);
+ M48txxInfo *info = data;
+
+ u->info = *info;
+}
+
+static uint32_t m48txx_sysbus_read(Nvram *obj, uint32_t addr)
+{
+ M48txxSysBusState *d = M48TXX_SYS_BUS(obj);
+ return m48t59_read(&d->state, addr);
+}
+
+static void m48txx_sysbus_write(Nvram *obj, uint32_t addr, uint32_t val)
+{
+ M48txxSysBusState *d = M48TXX_SYS_BUS(obj);
+ m48t59_write(&d->state, addr, val);
+}
+
+static void m48txx_sysbus_toggle_lock(Nvram *obj, int lock)
+{
+ M48txxSysBusState *d = M48TXX_SYS_BUS(obj);
+ m48t59_toggle_lock(&d->state, lock);
+}
+
+static Property m48t59_sysbus_properties[] = {
+ DEFINE_PROP_INT32("base-year", M48txxSysBusState, state.base_year, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void m48txx_sysbus_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+ NvramClass *nc = NVRAM_CLASS(klass);
+
+ k->init = m48t59_init1;
+ dc->reset = m48t59_reset_sysbus;
+ dc->props = m48t59_sysbus_properties;
+ nc->read = m48txx_sysbus_read;
+ nc->write = m48txx_sysbus_write;
+ nc->toggle_lock = m48txx_sysbus_toggle_lock;
+}
+
+static void m48txx_sysbus_concrete_class_init(ObjectClass *klass, void *data)
+{
+ M48txxSysBusDeviceClass *u = M48TXX_SYS_BUS_CLASS(klass);
+ M48txxInfo *info = data;
+
+ u->info = *info;
+}
+
+static const TypeInfo nvram_info = {
+ .name = TYPE_NVRAM,
+ .parent = TYPE_INTERFACE,
+ .class_size = sizeof(NvramClass),
+};
+
+static const TypeInfo m48txx_sysbus_type_info = {
+ .name = TYPE_M48TXX_SYS_BUS,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(M48txxSysBusState),
+ .abstract = true,
+ .class_init = m48txx_sysbus_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_NVRAM },
+ { }
+ }
+};
+
+static const TypeInfo m48txx_isa_type_info = {
+ .name = TYPE_M48TXX_ISA,
+ .parent = TYPE_ISA_DEVICE,
+ .instance_size = sizeof(M48txxISAState),
+ .abstract = true,
+ .class_init = m48txx_isa_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_NVRAM },
+ { }
+ }
+};
+
+static void m48t59_register_types(void)
+{
+ TypeInfo sysbus_type_info = {
+ .parent = TYPE_M48TXX_SYS_BUS,
+ .class_size = sizeof(M48txxSysBusDeviceClass),
+ .class_init = m48txx_sysbus_concrete_class_init,
+ };
+ TypeInfo isa_type_info = {
+ .parent = TYPE_M48TXX_ISA,
+ .class_size = sizeof(M48txxISADeviceClass),
+ .class_init = m48txx_isa_concrete_class_init,
+ };
+ int i;
+
+ type_register_static(&nvram_info);
+ type_register_static(&m48txx_sysbus_type_info);
+ type_register_static(&m48txx_isa_type_info);
+
+ for (i = 0; i < ARRAY_SIZE(m48txx_info); i++) {
+ if (m48txx_info[i].sysbus_name) {
+ sysbus_type_info.name = m48txx_info[i].sysbus_name;
+ sysbus_type_info.class_data = &m48txx_info[i];
+ type_register(&sysbus_type_info);
+ }
+
+ if (m48txx_info[i].isa_name) {
+ isa_type_info.name = m48txx_info[i].isa_name;
+ isa_type_info.class_data = &m48txx_info[i];
+ type_register(&isa_type_info);
+ }
+ }
+}
+
+type_init(m48t59_register_types)
Code Review / kvmfornfv.git / blobdiff