diff options
Diffstat (limited to 'hw/timer/aspeed_rtc.c')
| -rw-r--r-- | hw/timer/aspeed_rtc.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/hw/timer/aspeed_rtc.c b/hw/timer/aspeed_rtc.c deleted file mode 100644 index 5313017353..0000000000 --- a/hw/timer/aspeed_rtc.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * ASPEED Real Time Clock - * Joel Stanley <joel@jms.id.au> - * - * Copyright 2019 IBM Corp - * SPDX-License-Identifier: GPL-2.0-or-later - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "hw/timer/aspeed_rtc.h" -#include "migration/vmstate.h" -#include "qemu/log.h" -#include "qemu/timer.h" - -#include "trace.h" - -#define COUNTER1 (0x00 / 4) -#define COUNTER2 (0x04 / 4) -#define ALARM (0x08 / 4) -#define CONTROL (0x10 / 4) -#define ALARM_STATUS (0x14 / 4) - -#define RTC_UNLOCKED BIT(1) -#define RTC_ENABLED BIT(0) - -static void aspeed_rtc_calc_offset(AspeedRtcState *rtc) -{ - struct tm tm; - uint32_t year, cent; - uint32_t reg1 = rtc->reg[COUNTER1]; - uint32_t reg2 = rtc->reg[COUNTER2]; - - tm.tm_mday = (reg1 >> 24) & 0x1f; - tm.tm_hour = (reg1 >> 16) & 0x1f; - tm.tm_min = (reg1 >> 8) & 0x3f; - tm.tm_sec = (reg1 >> 0) & 0x3f; - - cent = (reg2 >> 16) & 0x1f; - year = (reg2 >> 8) & 0x7f; - tm.tm_mon = ((reg2 >> 0) & 0x0f) - 1; - tm.tm_year = year + (cent * 100) - 1900; - - rtc->offset = qemu_timedate_diff(&tm); -} - -static uint32_t aspeed_rtc_get_counter(AspeedRtcState *rtc, int r) -{ - uint32_t year, cent; - struct tm now; - - qemu_get_timedate(&now, rtc->offset); - - switch (r) { - case COUNTER1: - return (now.tm_mday << 24) | (now.tm_hour << 16) | - (now.tm_min << 8) | now.tm_sec; - case COUNTER2: - cent = (now.tm_year + 1900) / 100; - year = now.tm_year % 100; - return ((cent & 0x1f) << 16) | ((year & 0x7f) << 8) | - ((now.tm_mon + 1) & 0xf); - default: - g_assert_not_reached(); - } -} - -static uint64_t aspeed_rtc_read(void *opaque, hwaddr addr, - unsigned size) -{ - AspeedRtcState *rtc = opaque; - uint64_t val; - uint32_t r = addr >> 2; - - switch (r) { - case COUNTER1: - case COUNTER2: - if (rtc->reg[CONTROL] & RTC_ENABLED) { - rtc->reg[r] = aspeed_rtc_get_counter(rtc, r); - } - /* fall through */ - case CONTROL: - val = rtc->reg[r]; - break; - case ALARM: - case ALARM_STATUS: - default: - qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx "\n", __func__, addr); - return 0; - } - - trace_aspeed_rtc_read(addr, val); - - return val; -} - -static void aspeed_rtc_write(void *opaque, hwaddr addr, - uint64_t val, unsigned size) -{ - AspeedRtcState *rtc = opaque; - uint32_t r = addr >> 2; - - switch (r) { - case COUNTER1: - case COUNTER2: - if (!(rtc->reg[CONTROL] & RTC_UNLOCKED)) { - break; - } - /* fall through */ - case CONTROL: - rtc->reg[r] = val; - aspeed_rtc_calc_offset(rtc); - break; - case ALARM: - case ALARM_STATUS: - default: - qemu_log_mask(LOG_UNIMP, "%s: 0x%" HWADDR_PRIx "\n", __func__, addr); - break; - } - trace_aspeed_rtc_write(addr, val); -} - -static void aspeed_rtc_reset(DeviceState *d) -{ - AspeedRtcState *rtc = ASPEED_RTC(d); - - rtc->offset = 0; - memset(rtc->reg, 0, sizeof(rtc->reg)); -} - -static const MemoryRegionOps aspeed_rtc_ops = { - .read = aspeed_rtc_read, - .write = aspeed_rtc_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static const VMStateDescription vmstate_aspeed_rtc = { - .name = TYPE_ASPEED_RTC, - .version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(reg, AspeedRtcState, 0x18), - VMSTATE_INT32(offset, AspeedRtcState), - VMSTATE_INT32(offset, AspeedRtcState), - VMSTATE_END_OF_LIST() - } -}; - -static void aspeed_rtc_realize(DeviceState *dev, Error **errp) -{ - SysBusDevice *sbd = SYS_BUS_DEVICE(dev); - AspeedRtcState *s = ASPEED_RTC(dev); - - sysbus_init_irq(sbd, &s->irq); - - memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_rtc_ops, s, - "aspeed-rtc", 0x18ULL); - sysbus_init_mmio(sbd, &s->iomem); -} - -static void aspeed_rtc_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = aspeed_rtc_realize; - dc->vmsd = &vmstate_aspeed_rtc; - dc->reset = aspeed_rtc_reset; -} - -static const TypeInfo aspeed_rtc_info = { - .name = TYPE_ASPEED_RTC, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(AspeedRtcState), - .class_init = aspeed_rtc_class_init, -}; - -static void aspeed_rtc_register_types(void) -{ - type_register_static(&aspeed_rtc_info); -} - -type_init(aspeed_rtc_register_types) |