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-rw-r--r--hw/strongarm.c1598
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diff --git a/hw/strongarm.c b/hw/strongarm.c
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+++ b/hw/strongarm.c
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+/*
+ * StrongARM SA-1100/SA-1110 emulation
+ *
+ * Copyright (C) 2011 Dmitry Eremin-Solenikov
+ *
+ * Largely based on StrongARM emulation:
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * UART code based on QEMU 16550A UART emulation
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2008 Citrix Systems, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 "sysbus.h"
+#include "strongarm.h"
+#include "qemu-error.h"
+#include "arm-misc.h"
+#include "sysemu.h"
+#include "ssi.h"
+
+//#define DEBUG
+
+/*
+ TODO
+ - Implement cp15, c14 ?
+ - Implement cp15, c15 !!! (idle used in L)
+ - Implement idle mode handling/DIM
+ - Implement sleep mode/Wake sources
+ - Implement reset control
+ - Implement memory control regs
+ - PCMCIA handling
+ - Maybe support MBGNT/MBREQ
+ - DMA channels
+ - GPCLK
+ - IrDA
+ - MCP
+ - Enhance UART with modem signals
+ */
+
+#ifdef DEBUG
+# define DPRINTF(format, ...) printf(format , ## __VA_ARGS__)
+#else
+# define DPRINTF(format, ...) do { } while (0)
+#endif
+
+static struct {
+ target_phys_addr_t io_base;
+ int irq;
+} sa_serial[] = {
+ { 0x80010000, SA_PIC_UART1 },
+ { 0x80030000, SA_PIC_UART2 },
+ { 0x80050000, SA_PIC_UART3 },
+ { 0, 0 }
+};
+
+/* Interrupt Controller */
+typedef struct {
+ SysBusDevice busdev;
+ qemu_irq irq;
+ qemu_irq fiq;
+
+ uint32_t pending;
+ uint32_t enabled;
+ uint32_t is_fiq;
+ uint32_t int_idle;
+} StrongARMPICState;
+
+#define ICIP 0x00
+#define ICMR 0x04
+#define ICLR 0x08
+#define ICFP 0x10
+#define ICPR 0x20
+#define ICCR 0x0c
+
+#define SA_PIC_SRCS 32
+
+
+static void strongarm_pic_update(void *opaque)
+{
+ StrongARMPICState *s = opaque;
+
+ /* FIXME: reflect DIM */
+ qemu_set_irq(s->fiq, s->pending & s->enabled & s->is_fiq);
+ qemu_set_irq(s->irq, s->pending & s->enabled & ~s->is_fiq);
+}
+
+static void strongarm_pic_set_irq(void *opaque, int irq, int level)
+{
+ StrongARMPICState *s = opaque;
+
+ if (level) {
+ s->pending |= 1 << irq;
+ } else {
+ s->pending &= ~(1 << irq);
+ }
+
+ strongarm_pic_update(s);
+}
+
+static uint32_t strongarm_pic_mem_read(void *opaque, target_phys_addr_t offset)
+{
+ StrongARMPICState *s = opaque;
+
+ switch (offset) {
+ case ICIP:
+ return s->pending & ~s->is_fiq & s->enabled;
+ case ICMR:
+ return s->enabled;
+ case ICLR:
+ return s->is_fiq;
+ case ICCR:
+ return s->int_idle == 0;
+ case ICFP:
+ return s->pending & s->is_fiq & s->enabled;
+ case ICPR:
+ return s->pending;
+ default:
+ printf("%s: Bad register offset 0x" TARGET_FMT_plx "\n",
+ __func__, offset);
+ return 0;
+ }
+}
+
+static void strongarm_pic_mem_write(void *opaque, target_phys_addr_t offset,
+ uint32_t value)
+{
+ StrongARMPICState *s = opaque;
+
+ switch (offset) {
+ case ICMR:
+ s->enabled = value;
+ break;
+ case ICLR:
+ s->is_fiq = value;
+ break;
+ case ICCR:
+ s->int_idle = (value & 1) ? 0 : ~0;
+ break;
+ default:
+ printf("%s: Bad register offset 0x" TARGET_FMT_plx "\n",
+ __func__, offset);
+ break;
+ }
+ strongarm_pic_update(s);
+}
+
+static CPUReadMemoryFunc * const strongarm_pic_readfn[] = {
+ strongarm_pic_mem_read,
+ strongarm_pic_mem_read,
+ strongarm_pic_mem_read,
+};
+
+static CPUWriteMemoryFunc * const strongarm_pic_writefn[] = {
+ strongarm_pic_mem_write,
+ strongarm_pic_mem_write,
+ strongarm_pic_mem_write,
+};
+
+static int strongarm_pic_initfn(SysBusDevice *dev)
+{
+ StrongARMPICState *s = FROM_SYSBUS(StrongARMPICState, dev);
+ int iomemtype;
+
+ qdev_init_gpio_in(&dev->qdev, strongarm_pic_set_irq, SA_PIC_SRCS);
+ iomemtype = cpu_register_io_memory(strongarm_pic_readfn,
+ strongarm_pic_writefn, s, DEVICE_NATIVE_ENDIAN);
+ sysbus_init_mmio(dev, 0x1000, iomemtype);
+ sysbus_init_irq(dev, &s->irq);
+ sysbus_init_irq(dev, &s->fiq);
+
+ return 0;
+}
+
+static int strongarm_pic_post_load(void *opaque, int version_id)
+{
+ strongarm_pic_update(opaque);
+ return 0;
+}
+
+static VMStateDescription vmstate_strongarm_pic_regs = {
+ .name = "strongarm_pic",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = strongarm_pic_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(pending, StrongARMPICState),
+ VMSTATE_UINT32(enabled, StrongARMPICState),
+ VMSTATE_UINT32(is_fiq, StrongARMPICState),
+ VMSTATE_UINT32(int_idle, StrongARMPICState),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_pic_info = {
+ .init = strongarm_pic_initfn,
+ .qdev.name = "strongarm_pic",
+ .qdev.desc = "StrongARM PIC",
+ .qdev.size = sizeof(StrongARMPICState),
+ .qdev.vmsd = &vmstate_strongarm_pic_regs,
+};
+
+/* Real-Time Clock */
+#define RTAR 0x00 /* RTC Alarm register */
+#define RCNR 0x04 /* RTC Counter register */
+#define RTTR 0x08 /* RTC Timer Trim register */
+#define RTSR 0x10 /* RTC Status register */
+
+#define RTSR_AL (1 << 0) /* RTC Alarm detected */
+#define RTSR_HZ (1 << 1) /* RTC 1Hz detected */
+#define RTSR_ALE (1 << 2) /* RTC Alarm enable */
+#define RTSR_HZE (1 << 3) /* RTC 1Hz enable */
+
+/* 16 LSB of RTTR are clockdiv for internal trim logic,
+ * trim delete isn't emulated, so
+ * f = 32 768 / (RTTR_trim + 1) */
+
+typedef struct {
+ SysBusDevice busdev;
+ uint32_t rttr;
+ uint32_t rtsr;
+ uint32_t rtar;
+ uint32_t last_rcnr;
+ int64_t last_hz;
+ QEMUTimer *rtc_alarm;
+ QEMUTimer *rtc_hz;
+ qemu_irq rtc_irq;
+ qemu_irq rtc_hz_irq;
+} StrongARMRTCState;
+
+static inline void strongarm_rtc_int_update(StrongARMRTCState *s)
+{
+ qemu_set_irq(s->rtc_irq, s->rtsr & RTSR_AL);
+ qemu_set_irq(s->rtc_hz_irq, s->rtsr & RTSR_HZ);
+}
+
+static void strongarm_rtc_hzupdate(StrongARMRTCState *s)
+{
+ int64_t rt = qemu_get_clock_ms(rt_clock);
+ s->last_rcnr += ((rt - s->last_hz) << 15) /
+ (1000 * ((s->rttr & 0xffff) + 1));
+ s->last_hz = rt;
+}
+
+static inline void strongarm_rtc_timer_update(StrongARMRTCState *s)
+{
+ if ((s->rtsr & RTSR_HZE) && !(s->rtsr & RTSR_HZ)) {
+ qemu_mod_timer(s->rtc_hz, s->last_hz + 1000);
+ } else {
+ qemu_del_timer(s->rtc_hz);
+ }
+
+ if ((s->rtsr & RTSR_ALE) && !(s->rtsr & RTSR_AL)) {
+ qemu_mod_timer(s->rtc_alarm, s->last_hz +
+ (((s->rtar - s->last_rcnr) * 1000 *
+ ((s->rttr & 0xffff) + 1)) >> 15));
+ } else {
+ qemu_del_timer(s->rtc_alarm);
+ }
+}
+
+static inline void strongarm_rtc_alarm_tick(void *opaque)
+{
+ StrongARMRTCState *s = opaque;
+ s->rtsr |= RTSR_AL;
+ strongarm_rtc_timer_update(s);
+ strongarm_rtc_int_update(s);
+}
+
+static inline void strongarm_rtc_hz_tick(void *opaque)
+{
+ StrongARMRTCState *s = opaque;
+ s->rtsr |= RTSR_HZ;
+ strongarm_rtc_timer_update(s);
+ strongarm_rtc_int_update(s);
+}
+
+static uint32_t strongarm_rtc_read(void *opaque, target_phys_addr_t addr)
+{
+ StrongARMRTCState *s = opaque;
+
+ switch (addr) {
+ case RTTR:
+ return s->rttr;
+ case RTSR:
+ return s->rtsr;
+ case RTAR:
+ return s->rtar;
+ case RCNR:
+ return s->last_rcnr +
+ ((qemu_get_clock_ms(rt_clock) - s->last_hz) << 15) /
+ (1000 * ((s->rttr & 0xffff) + 1));
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ return 0;
+ }
+}
+
+static void strongarm_rtc_write(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ StrongARMRTCState *s = opaque;
+ uint32_t old_rtsr;
+
+ switch (addr) {
+ case RTTR:
+ strongarm_rtc_hzupdate(s);
+ s->rttr = value;
+ strongarm_rtc_timer_update(s);
+ break;
+
+ case RTSR:
+ old_rtsr = s->rtsr;
+ s->rtsr = (value & (RTSR_ALE | RTSR_HZE)) |
+ (s->rtsr & ~(value & (RTSR_AL | RTSR_HZ)));
+
+ if (s->rtsr != old_rtsr) {
+ strongarm_rtc_timer_update(s);
+ }
+
+ strongarm_rtc_int_update(s);
+ break;
+
+ case RTAR:
+ s->rtar = value;
+ strongarm_rtc_timer_update(s);
+ break;
+
+ case RCNR:
+ strongarm_rtc_hzupdate(s);
+ s->last_rcnr = value;
+ strongarm_rtc_timer_update(s);
+ break;
+
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ }
+}
+
+static CPUReadMemoryFunc * const strongarm_rtc_readfn[] = {
+ strongarm_rtc_read,
+ strongarm_rtc_read,
+ strongarm_rtc_read,
+};
+
+static CPUWriteMemoryFunc * const strongarm_rtc_writefn[] = {
+ strongarm_rtc_write,
+ strongarm_rtc_write,
+ strongarm_rtc_write,
+};
+
+static int strongarm_rtc_init(SysBusDevice *dev)
+{
+ StrongARMRTCState *s = FROM_SYSBUS(StrongARMRTCState, dev);
+ struct tm tm;
+ int iomemtype;
+
+ s->rttr = 0x0;
+ s->rtsr = 0;
+
+ qemu_get_timedate(&tm, 0);
+
+ s->last_rcnr = (uint32_t) mktimegm(&tm);
+ s->last_hz = qemu_get_clock_ms(rt_clock);
+
+ s->rtc_alarm = qemu_new_timer_ms(rt_clock, strongarm_rtc_alarm_tick, s);
+ s->rtc_hz = qemu_new_timer_ms(rt_clock, strongarm_rtc_hz_tick, s);
+
+ sysbus_init_irq(dev, &s->rtc_irq);
+ sysbus_init_irq(dev, &s->rtc_hz_irq);
+
+ iomemtype = cpu_register_io_memory(strongarm_rtc_readfn,
+ strongarm_rtc_writefn, s, DEVICE_NATIVE_ENDIAN);
+ sysbus_init_mmio(dev, 0x10000, iomemtype);
+
+ return 0;
+}
+
+static void strongarm_rtc_pre_save(void *opaque)
+{
+ StrongARMRTCState *s = opaque;
+
+ strongarm_rtc_hzupdate(s);
+}
+
+static int strongarm_rtc_post_load(void *opaque, int version_id)
+{
+ StrongARMRTCState *s = opaque;
+
+ strongarm_rtc_timer_update(s);
+ strongarm_rtc_int_update(s);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_strongarm_rtc_regs = {
+ .name = "strongarm-rtc",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .pre_save = strongarm_rtc_pre_save,
+ .post_load = strongarm_rtc_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(rttr, StrongARMRTCState),
+ VMSTATE_UINT32(rtsr, StrongARMRTCState),
+ VMSTATE_UINT32(rtar, StrongARMRTCState),
+ VMSTATE_UINT32(last_rcnr, StrongARMRTCState),
+ VMSTATE_INT64(last_hz, StrongARMRTCState),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_rtc_sysbus_info = {
+ .init = strongarm_rtc_init,
+ .qdev.name = "strongarm-rtc",
+ .qdev.desc = "StrongARM RTC Controller",
+ .qdev.size = sizeof(StrongARMRTCState),
+ .qdev.vmsd = &vmstate_strongarm_rtc_regs,
+};
+
+/* GPIO */
+#define GPLR 0x00
+#define GPDR 0x04
+#define GPSR 0x08
+#define GPCR 0x0c
+#define GRER 0x10
+#define GFER 0x14
+#define GEDR 0x18
+#define GAFR 0x1c
+
+typedef struct StrongARMGPIOInfo StrongARMGPIOInfo;
+struct StrongARMGPIOInfo {
+ SysBusDevice busdev;
+ qemu_irq handler[28];
+ qemu_irq irqs[11];
+ qemu_irq irqX;
+
+ uint32_t ilevel;
+ uint32_t olevel;
+ uint32_t dir;
+ uint32_t rising;
+ uint32_t falling;
+ uint32_t status;
+ uint32_t gpsr;
+ uint32_t gafr;
+
+ uint32_t prev_level;
+};
+
+
+static void strongarm_gpio_irq_update(StrongARMGPIOInfo *s)
+{
+ int i;
+ for (i = 0; i < 11; i++) {
+ qemu_set_irq(s->irqs[i], s->status & (1 << i));
+ }
+
+ qemu_set_irq(s->irqX, (s->status & ~0x7ff));
+}
+
+static void strongarm_gpio_set(void *opaque, int line, int level)
+{
+ StrongARMGPIOInfo *s = opaque;
+ uint32_t mask;
+
+ mask = 1 << line;
+
+ if (level) {
+ s->status |= s->rising & mask &
+ ~s->ilevel & ~s->dir;
+ s->ilevel |= mask;
+ } else {
+ s->status |= s->falling & mask &
+ s->ilevel & ~s->dir;
+ s->ilevel &= ~mask;
+ }
+
+ if (s->status & mask) {
+ strongarm_gpio_irq_update(s);
+ }
+}
+
+static void strongarm_gpio_handler_update(StrongARMGPIOInfo *s)
+{
+ uint32_t level, diff;
+ int bit;
+
+ level = s->olevel & s->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 uint32_t strongarm_gpio_read(void *opaque, target_phys_addr_t offset)
+{
+ StrongARMGPIOInfo *s = opaque;
+
+ switch (offset) {
+ case GPDR: /* GPIO Pin-Direction registers */
+ return s->dir;
+
+ case GPSR: /* GPIO Pin-Output Set registers */
+ DPRINTF("%s: Read from a write-only register 0x" TARGET_FMT_plx "\n",
+ __func__, offset);
+ return s->gpsr; /* Return last written value. */
+
+ case GPCR: /* GPIO Pin-Output Clear registers */
+ DPRINTF("%s: Read from a write-only register 0x" TARGET_FMT_plx "\n",
+ __func__, offset);
+ return 31337; /* Specified as unpredictable in the docs. */
+
+ case GRER: /* GPIO Rising-Edge Detect Enable registers */
+ return s->rising;
+
+ case GFER: /* GPIO Falling-Edge Detect Enable registers */
+ return s->falling;
+
+ case GAFR: /* GPIO Alternate Function registers */
+ return s->gafr;
+
+ case GPLR: /* GPIO Pin-Level registers */
+ return (s->olevel & s->dir) |
+ (s->ilevel & ~s->dir);
+
+ case GEDR: /* GPIO Edge Detect Status registers */
+ return s->status;
+
+ default:
+ printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset);
+ }
+
+ return 0;
+}
+
+static void strongarm_gpio_write(void *opaque,
+ target_phys_addr_t offset, uint32_t value)
+{
+ StrongARMGPIOInfo *s = opaque;
+
+ switch (offset) {
+ case GPDR: /* GPIO Pin-Direction registers */
+ s->dir = value;
+ strongarm_gpio_handler_update(s);
+ break;
+
+ case GPSR: /* GPIO Pin-Output Set registers */
+ s->olevel |= value;
+ strongarm_gpio_handler_update(s);
+ s->gpsr = value;
+ break;
+
+ case GPCR: /* GPIO Pin-Output Clear registers */
+ s->olevel &= ~value;
+ strongarm_gpio_handler_update(s);
+ break;
+
+ case GRER: /* GPIO Rising-Edge Detect Enable registers */
+ s->rising = value;
+ break;
+
+ case GFER: /* GPIO Falling-Edge Detect Enable registers */
+ s->falling = value;
+ break;
+
+ case GAFR: /* GPIO Alternate Function registers */
+ s->gafr = value;
+ break;
+
+ case GEDR: /* GPIO Edge Detect Status registers */
+ s->status &= ~value;
+ strongarm_gpio_irq_update(s);
+ break;
+
+ default:
+ printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset);
+ }
+}
+
+static CPUReadMemoryFunc * const strongarm_gpio_readfn[] = {
+ strongarm_gpio_read,
+ strongarm_gpio_read,
+ strongarm_gpio_read
+};
+
+static CPUWriteMemoryFunc * const strongarm_gpio_writefn[] = {
+ strongarm_gpio_write,
+ strongarm_gpio_write,
+ strongarm_gpio_write
+};
+
+static DeviceState *strongarm_gpio_init(target_phys_addr_t base,
+ DeviceState *pic)
+{
+ DeviceState *dev;
+ int i;
+
+ dev = qdev_create(NULL, "strongarm-gpio");
+ qdev_init_nofail(dev);
+
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+ for (i = 0; i < 12; i++)
+ sysbus_connect_irq(sysbus_from_qdev(dev), i,
+ qdev_get_gpio_in(pic, SA_PIC_GPIO0_EDGE + i));
+
+ return dev;
+}
+
+static int strongarm_gpio_initfn(SysBusDevice *dev)
+{
+ int iomemtype;
+ StrongARMGPIOInfo *s;
+ int i;
+
+ s = FROM_SYSBUS(StrongARMGPIOInfo, dev);
+
+ qdev_init_gpio_in(&dev->qdev, strongarm_gpio_set, 28);
+ qdev_init_gpio_out(&dev->qdev, s->handler, 28);
+
+ iomemtype = cpu_register_io_memory(strongarm_gpio_readfn,
+ strongarm_gpio_writefn, s, DEVICE_NATIVE_ENDIAN);
+
+ sysbus_init_mmio(dev, 0x1000, iomemtype);
+ for (i = 0; i < 11; i++) {
+ sysbus_init_irq(dev, &s->irqs[i]);
+ }
+ sysbus_init_irq(dev, &s->irqX);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_strongarm_gpio_regs = {
+ .name = "strongarm-gpio",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(ilevel, StrongARMGPIOInfo),
+ VMSTATE_UINT32(olevel, StrongARMGPIOInfo),
+ VMSTATE_UINT32(dir, StrongARMGPIOInfo),
+ VMSTATE_UINT32(rising, StrongARMGPIOInfo),
+ VMSTATE_UINT32(falling, StrongARMGPIOInfo),
+ VMSTATE_UINT32(status, StrongARMGPIOInfo),
+ VMSTATE_UINT32(gafr, StrongARMGPIOInfo),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_gpio_info = {
+ .init = strongarm_gpio_initfn,
+ .qdev.name = "strongarm-gpio",
+ .qdev.desc = "StrongARM GPIO controller",
+ .qdev.size = sizeof(StrongARMGPIOInfo),
+};
+
+/* Peripheral Pin Controller */
+#define PPDR 0x00
+#define PPSR 0x04
+#define PPAR 0x08
+#define PSDR 0x0c
+#define PPFR 0x10
+
+typedef struct StrongARMPPCInfo StrongARMPPCInfo;
+struct StrongARMPPCInfo {
+ SysBusDevice busdev;
+ qemu_irq handler[28];
+
+ uint32_t ilevel;
+ uint32_t olevel;
+ uint32_t dir;
+ uint32_t ppar;
+ uint32_t psdr;
+ uint32_t ppfr;
+
+ uint32_t prev_level;
+};
+
+static void strongarm_ppc_set(void *opaque, int line, int level)
+{
+ StrongARMPPCInfo *s = opaque;
+
+ if (level) {
+ s->ilevel |= 1 << line;
+ } else {
+ s->ilevel &= ~(1 << line);
+ }
+}
+
+static void strongarm_ppc_handler_update(StrongARMPPCInfo *s)
+{
+ uint32_t level, diff;
+ int bit;
+
+ level = s->olevel & s->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 uint32_t strongarm_ppc_read(void *opaque, target_phys_addr_t offset)
+{
+ StrongARMPPCInfo *s = opaque;
+
+ switch (offset) {
+ case PPDR: /* PPC Pin Direction registers */
+ return s->dir | ~0x3fffff;
+
+ case PPSR: /* PPC Pin State registers */
+ return (s->olevel & s->dir) |
+ (s->ilevel & ~s->dir) |
+ ~0x3fffff;
+
+ case PPAR:
+ return s->ppar | ~0x41000;
+
+ case PSDR:
+ return s->psdr;
+
+ case PPFR:
+ return s->ppfr | ~0x7f001;
+
+ default:
+ printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset);
+ }
+
+ return 0;
+}
+
+static void strongarm_ppc_write(void *opaque,
+ target_phys_addr_t offset, uint32_t value)
+{
+ StrongARMPPCInfo *s = opaque;
+
+ switch (offset) {
+ case PPDR: /* PPC Pin Direction registers */
+ s->dir = value & 0x3fffff;
+ strongarm_ppc_handler_update(s);
+ break;
+
+ case PPSR: /* PPC Pin State registers */
+ s->olevel = value & s->dir & 0x3fffff;
+ strongarm_ppc_handler_update(s);
+ break;
+
+ case PPAR:
+ s->ppar = value & 0x41000;
+ break;
+
+ case PSDR:
+ s->psdr = value & 0x3fffff;
+ break;
+
+ case PPFR:
+ s->ppfr = value & 0x7f001;
+ break;
+
+ default:
+ printf("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset);
+ }
+}
+
+static CPUReadMemoryFunc * const strongarm_ppc_readfn[] = {
+ strongarm_ppc_read,
+ strongarm_ppc_read,
+ strongarm_ppc_read
+};
+
+static CPUWriteMemoryFunc * const strongarm_ppc_writefn[] = {
+ strongarm_ppc_write,
+ strongarm_ppc_write,
+ strongarm_ppc_write
+};
+
+static int strongarm_ppc_init(SysBusDevice *dev)
+{
+ int iomemtype;
+ StrongARMPPCInfo *s;
+
+ s = FROM_SYSBUS(StrongARMPPCInfo, dev);
+
+ qdev_init_gpio_in(&dev->qdev, strongarm_ppc_set, 22);
+ qdev_init_gpio_out(&dev->qdev, s->handler, 22);
+
+ iomemtype = cpu_register_io_memory(strongarm_ppc_readfn,
+ strongarm_ppc_writefn, s, DEVICE_NATIVE_ENDIAN);
+
+ sysbus_init_mmio(dev, 0x1000, iomemtype);
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_strongarm_ppc_regs = {
+ .name = "strongarm-ppc",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(ilevel, StrongARMPPCInfo),
+ VMSTATE_UINT32(olevel, StrongARMPPCInfo),
+ VMSTATE_UINT32(dir, StrongARMPPCInfo),
+ VMSTATE_UINT32(ppar, StrongARMPPCInfo),
+ VMSTATE_UINT32(psdr, StrongARMPPCInfo),
+ VMSTATE_UINT32(ppfr, StrongARMPPCInfo),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_ppc_info = {
+ .init = strongarm_ppc_init,
+ .qdev.name = "strongarm-ppc",
+ .qdev.desc = "StrongARM PPC controller",
+ .qdev.size = sizeof(StrongARMPPCInfo),
+};
+
+/* UART Ports */
+#define UTCR0 0x00
+#define UTCR1 0x04
+#define UTCR2 0x08
+#define UTCR3 0x0c
+#define UTDR 0x14
+#define UTSR0 0x1c
+#define UTSR1 0x20
+
+#define UTCR0_PE (1 << 0) /* Parity enable */
+#define UTCR0_OES (1 << 1) /* Even parity */
+#define UTCR0_SBS (1 << 2) /* 2 stop bits */
+#define UTCR0_DSS (1 << 3) /* 8-bit data */
+
+#define UTCR3_RXE (1 << 0) /* Rx enable */
+#define UTCR3_TXE (1 << 1) /* Tx enable */
+#define UTCR3_BRK (1 << 2) /* Force Break */
+#define UTCR3_RIE (1 << 3) /* Rx int enable */
+#define UTCR3_TIE (1 << 4) /* Tx int enable */
+#define UTCR3_LBM (1 << 5) /* Loopback */
+
+#define UTSR0_TFS (1 << 0) /* Tx FIFO nearly empty */
+#define UTSR0_RFS (1 << 1) /* Rx FIFO nearly full */
+#define UTSR0_RID (1 << 2) /* Receiver Idle */
+#define UTSR0_RBB (1 << 3) /* Receiver begin break */
+#define UTSR0_REB (1 << 4) /* Receiver end break */
+#define UTSR0_EIF (1 << 5) /* Error in FIFO */
+
+#define UTSR1_RNE (1 << 1) /* Receive FIFO not empty */
+#define UTSR1_TNF (1 << 2) /* Transmit FIFO not full */
+#define UTSR1_PRE (1 << 3) /* Parity error */
+#define UTSR1_FRE (1 << 4) /* Frame error */
+#define UTSR1_ROR (1 << 5) /* Receive Over Run */
+
+#define RX_FIFO_PRE (1 << 8)
+#define RX_FIFO_FRE (1 << 9)
+#define RX_FIFO_ROR (1 << 10)
+
+typedef struct {
+ SysBusDevice busdev;
+ CharDriverState *chr;
+ qemu_irq irq;
+
+ uint8_t utcr0;
+ uint16_t brd;
+ uint8_t utcr3;
+ uint8_t utsr0;
+ uint8_t utsr1;
+
+ uint8_t tx_fifo[8];
+ uint8_t tx_start;
+ uint8_t tx_len;
+ uint16_t rx_fifo[12]; /* value + error flags in high bits */
+ uint8_t rx_start;
+ uint8_t rx_len;
+
+ uint64_t char_transmit_time; /* time to transmit a char in ticks*/
+ bool wait_break_end;
+ QEMUTimer *rx_timeout_timer;
+ QEMUTimer *tx_timer;
+} StrongARMUARTState;
+
+static void strongarm_uart_update_status(StrongARMUARTState *s)
+{
+ uint16_t utsr1 = 0;
+
+ if (s->tx_len != 8) {
+ utsr1 |= UTSR1_TNF;
+ }
+
+ if (s->rx_len != 0) {
+ uint16_t ent = s->rx_fifo[s->rx_start];
+
+ utsr1 |= UTSR1_RNE;
+ if (ent & RX_FIFO_PRE) {
+ s->utsr1 |= UTSR1_PRE;
+ }
+ if (ent & RX_FIFO_FRE) {
+ s->utsr1 |= UTSR1_FRE;
+ }
+ if (ent & RX_FIFO_ROR) {
+ s->utsr1 |= UTSR1_ROR;
+ }
+ }
+
+ s->utsr1 = utsr1;
+}
+
+static void strongarm_uart_update_int_status(StrongARMUARTState *s)
+{
+ uint16_t utsr0 = s->utsr0 &
+ (UTSR0_REB | UTSR0_RBB | UTSR0_RID);
+ int i;
+
+ if ((s->utcr3 & UTCR3_TXE) &&
+ (s->utcr3 & UTCR3_TIE) &&
+ s->tx_len <= 4) {
+ utsr0 |= UTSR0_TFS;
+ }
+
+ if ((s->utcr3 & UTCR3_RXE) &&
+ (s->utcr3 & UTCR3_RIE) &&
+ s->rx_len > 4) {
+ utsr0 |= UTSR0_RFS;
+ }
+
+ for (i = 0; i < s->rx_len && i < 4; i++)
+ if (s->rx_fifo[(s->rx_start + i) % 12] & ~0xff) {
+ utsr0 |= UTSR0_EIF;
+ break;
+ }
+
+ s->utsr0 = utsr0;
+ qemu_set_irq(s->irq, utsr0);
+}
+
+static void strongarm_uart_update_parameters(StrongARMUARTState *s)
+{
+ int speed, parity, data_bits, stop_bits, frame_size;
+ QEMUSerialSetParams ssp;
+
+ /* Start bit. */
+ frame_size = 1;
+ if (s->utcr0 & UTCR0_PE) {
+ /* Parity bit. */
+ frame_size++;
+ if (s->utcr0 & UTCR0_OES) {
+ parity = 'E';
+ } else {
+ parity = 'O';
+ }
+ } else {
+ parity = 'N';
+ }
+ if (s->utcr0 & UTCR0_SBS) {
+ stop_bits = 2;
+ } else {
+ stop_bits = 1;
+ }
+
+ data_bits = (s->utcr0 & UTCR0_DSS) ? 8 : 7;
+ frame_size += data_bits + stop_bits;
+ speed = 3686400 / 16 / (s->brd + 1);
+ ssp.speed = speed;
+ ssp.parity = parity;
+ ssp.data_bits = data_bits;
+ ssp.stop_bits = stop_bits;
+ s->char_transmit_time = (get_ticks_per_sec() / speed) * frame_size;
+ if (s->chr) {
+ qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
+ }
+
+ DPRINTF(stderr, "%s speed=%d parity=%c data=%d stop=%d\n", s->chr->label,
+ speed, parity, data_bits, stop_bits);
+}
+
+static void strongarm_uart_rx_to(void *opaque)
+{
+ StrongARMUARTState *s = opaque;
+
+ if (s->rx_len) {
+ s->utsr0 |= UTSR0_RID;
+ strongarm_uart_update_int_status(s);
+ }
+}
+
+static void strongarm_uart_rx_push(StrongARMUARTState *s, uint16_t c)
+{
+ if ((s->utcr3 & UTCR3_RXE) == 0) {
+ /* rx disabled */
+ return;
+ }
+
+ if (s->wait_break_end) {
+ s->utsr0 |= UTSR0_REB;
+ s->wait_break_end = false;
+ }
+
+ if (s->rx_len < 12) {
+ s->rx_fifo[(s->rx_start + s->rx_len) % 12] = c;
+ s->rx_len++;
+ } else
+ s->rx_fifo[(s->rx_start + 11) % 12] |= RX_FIFO_ROR;
+}
+
+static int strongarm_uart_can_receive(void *opaque)
+{
+ StrongARMUARTState *s = opaque;
+
+ if (s->rx_len == 12) {
+ return 0;
+ }
+ /* It's best not to get more than 2/3 of RX FIFO, so advertise that much */
+ if (s->rx_len < 8) {
+ return 8 - s->rx_len;
+ }
+ return 1;
+}
+
+static void strongarm_uart_receive(void *opaque, const uint8_t *buf, int size)
+{
+ StrongARMUARTState *s = opaque;
+ int i;
+
+ for (i = 0; i < size; i++) {
+ strongarm_uart_rx_push(s, buf[i]);
+ }
+
+ /* call the timeout receive callback in 3 char transmit time */
+ qemu_mod_timer(s->rx_timeout_timer,
+ qemu_get_clock_ns(vm_clock) + s->char_transmit_time * 3);
+
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+}
+
+static void strongarm_uart_event(void *opaque, int event)
+{
+ StrongARMUARTState *s = opaque;
+ if (event == CHR_EVENT_BREAK) {
+ s->utsr0 |= UTSR0_RBB;
+ strongarm_uart_rx_push(s, RX_FIFO_FRE);
+ s->wait_break_end = true;
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+ }
+}
+
+static void strongarm_uart_tx(void *opaque)
+{
+ StrongARMUARTState *s = opaque;
+ uint64_t new_xmit_ts = qemu_get_clock_ns(vm_clock);
+
+ if (s->utcr3 & UTCR3_LBM) /* loopback */ {
+ strongarm_uart_receive(s, &s->tx_fifo[s->tx_start], 1);
+ } else if (s->chr) {
+ qemu_chr_write(s->chr, &s->tx_fifo[s->tx_start], 1);
+ }
+
+ s->tx_start = (s->tx_start + 1) % 8;
+ s->tx_len--;
+ if (s->tx_len) {
+ qemu_mod_timer(s->tx_timer, new_xmit_ts + s->char_transmit_time);
+ }
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+}
+
+static uint32_t strongarm_uart_read(void *opaque, target_phys_addr_t addr)
+{
+ StrongARMUARTState *s = opaque;
+ uint16_t ret;
+
+ switch (addr) {
+ case UTCR0:
+ return s->utcr0;
+
+ case UTCR1:
+ return s->brd >> 8;
+
+ case UTCR2:
+ return s->brd & 0xff;
+
+ case UTCR3:
+ return s->utcr3;
+
+ case UTDR:
+ if (s->rx_len != 0) {
+ ret = s->rx_fifo[s->rx_start];
+ s->rx_start = (s->rx_start + 1) % 12;
+ s->rx_len--;
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+ return ret;
+ }
+ return 0;
+
+ case UTSR0:
+ return s->utsr0;
+
+ case UTSR1:
+ return s->utsr1;
+
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ return 0;
+ }
+}
+
+static void strongarm_uart_write(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ StrongARMUARTState *s = opaque;
+
+ switch (addr) {
+ case UTCR0:
+ s->utcr0 = value & 0x7f;
+ strongarm_uart_update_parameters(s);
+ break;
+
+ case UTCR1:
+ s->brd = (s->brd & 0xff) | ((value & 0xf) << 8);
+ strongarm_uart_update_parameters(s);
+ break;
+
+ case UTCR2:
+ s->brd = (s->brd & 0xf00) | (value & 0xff);
+ strongarm_uart_update_parameters(s);
+ break;
+
+ case UTCR3:
+ s->utcr3 = value & 0x3f;
+ if ((s->utcr3 & UTCR3_RXE) == 0) {
+ s->rx_len = 0;
+ }
+ if ((s->utcr3 & UTCR3_TXE) == 0) {
+ s->tx_len = 0;
+ }
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+ break;
+
+ case UTDR:
+ if ((s->utcr3 & UTCR3_TXE) && s->tx_len != 8) {
+ s->tx_fifo[(s->tx_start + s->tx_len) % 8] = value;
+ s->tx_len++;
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+ if (s->tx_len == 1) {
+ strongarm_uart_tx(s);
+ }
+ }
+ break;
+
+ case UTSR0:
+ s->utsr0 = s->utsr0 & ~(value &
+ (UTSR0_REB | UTSR0_RBB | UTSR0_RID));
+ strongarm_uart_update_int_status(s);
+ break;
+
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ }
+}
+
+static CPUReadMemoryFunc * const strongarm_uart_readfn[] = {
+ strongarm_uart_read,
+ strongarm_uart_read,
+ strongarm_uart_read,
+};
+
+static CPUWriteMemoryFunc * const strongarm_uart_writefn[] = {
+ strongarm_uart_write,
+ strongarm_uart_write,
+ strongarm_uart_write,
+};
+
+static int strongarm_uart_init(SysBusDevice *dev)
+{
+ StrongARMUARTState *s = FROM_SYSBUS(StrongARMUARTState, dev);
+ int iomemtype;
+
+ iomemtype = cpu_register_io_memory(strongarm_uart_readfn,
+ strongarm_uart_writefn, s, DEVICE_NATIVE_ENDIAN);
+ sysbus_init_mmio(dev, 0x10000, iomemtype);
+ sysbus_init_irq(dev, &s->irq);
+
+ s->rx_timeout_timer = qemu_new_timer_ns(vm_clock, strongarm_uart_rx_to, s);
+ s->tx_timer = qemu_new_timer_ns(vm_clock, strongarm_uart_tx, s);
+
+ if (s->chr) {
+ qemu_chr_add_handlers(s->chr,
+ strongarm_uart_can_receive,
+ strongarm_uart_receive,
+ strongarm_uart_event,
+ s);
+ }
+
+ return 0;
+}
+
+static void strongarm_uart_reset(DeviceState *dev)
+{
+ StrongARMUARTState *s = DO_UPCAST(StrongARMUARTState, busdev.qdev, dev);
+
+ s->utcr0 = UTCR0_DSS; /* 8 data, no parity */
+ s->brd = 23; /* 9600 */
+ /* enable send & recv - this actually violates spec */
+ s->utcr3 = UTCR3_TXE | UTCR3_RXE;
+
+ s->rx_len = s->tx_len = 0;
+
+ strongarm_uart_update_parameters(s);
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+}
+
+static int strongarm_uart_post_load(void *opaque, int version_id)
+{
+ StrongARMUARTState *s = opaque;
+
+ strongarm_uart_update_parameters(s);
+ strongarm_uart_update_status(s);
+ strongarm_uart_update_int_status(s);
+
+ /* tx and restart timer */
+ if (s->tx_len) {
+ strongarm_uart_tx(s);
+ }
+
+ /* restart rx timeout timer */
+ if (s->rx_len) {
+ qemu_mod_timer(s->rx_timeout_timer,
+ qemu_get_clock_ns(vm_clock) + s->char_transmit_time * 3);
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_strongarm_uart_regs = {
+ .name = "strongarm-uart",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = strongarm_uart_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(utcr0, StrongARMUARTState),
+ VMSTATE_UINT16(brd, StrongARMUARTState),
+ VMSTATE_UINT8(utcr3, StrongARMUARTState),
+ VMSTATE_UINT8(utsr0, StrongARMUARTState),
+ VMSTATE_UINT8_ARRAY(tx_fifo, StrongARMUARTState, 8),
+ VMSTATE_UINT8(tx_start, StrongARMUARTState),
+ VMSTATE_UINT8(tx_len, StrongARMUARTState),
+ VMSTATE_UINT16_ARRAY(rx_fifo, StrongARMUARTState, 12),
+ VMSTATE_UINT8(rx_start, StrongARMUARTState),
+ VMSTATE_UINT8(rx_len, StrongARMUARTState),
+ VMSTATE_BOOL(wait_break_end, StrongARMUARTState),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_uart_info = {
+ .init = strongarm_uart_init,
+ .qdev.name = "strongarm-uart",
+ .qdev.desc = "StrongARM UART controller",
+ .qdev.size = sizeof(StrongARMUARTState),
+ .qdev.reset = strongarm_uart_reset,
+ .qdev.vmsd = &vmstate_strongarm_uart_regs,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_CHR("chardev", StrongARMUARTState, chr),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+};
+
+/* Synchronous Serial Ports */
+typedef struct {
+ SysBusDevice busdev;
+ qemu_irq irq;
+ SSIBus *bus;
+
+ uint16_t sscr[2];
+ uint16_t sssr;
+
+ uint16_t rx_fifo[8];
+ uint8_t rx_level;
+ uint8_t rx_start;
+} StrongARMSSPState;
+
+#define SSCR0 0x60 /* SSP Control register 0 */
+#define SSCR1 0x64 /* SSP Control register 1 */
+#define SSDR 0x6c /* SSP Data register */
+#define SSSR 0x74 /* SSP Status register */
+
+/* Bitfields for above registers */
+#define SSCR0_SPI(x) (((x) & 0x30) == 0x00)
+#define SSCR0_SSP(x) (((x) & 0x30) == 0x10)
+#define SSCR0_UWIRE(x) (((x) & 0x30) == 0x20)
+#define SSCR0_PSP(x) (((x) & 0x30) == 0x30)
+#define SSCR0_SSE (1 << 7)
+#define SSCR0_DSS(x) (((x) & 0xf) + 1)
+#define SSCR1_RIE (1 << 0)
+#define SSCR1_TIE (1 << 1)
+#define SSCR1_LBM (1 << 2)
+#define SSSR_TNF (1 << 2)
+#define SSSR_RNE (1 << 3)
+#define SSSR_TFS (1 << 5)
+#define SSSR_RFS (1 << 6)
+#define SSSR_ROR (1 << 7)
+#define SSSR_RW 0x0080
+
+static void strongarm_ssp_int_update(StrongARMSSPState *s)
+{
+ int level = 0;
+
+ level |= (s->sssr & SSSR_ROR);
+ level |= (s->sssr & SSSR_RFS) && (s->sscr[1] & SSCR1_RIE);
+ level |= (s->sssr & SSSR_TFS) && (s->sscr[1] & SSCR1_TIE);
+ qemu_set_irq(s->irq, level);
+}
+
+static void strongarm_ssp_fifo_update(StrongARMSSPState *s)
+{
+ s->sssr &= ~SSSR_TFS;
+ s->sssr &= ~SSSR_TNF;
+ if (s->sscr[0] & SSCR0_SSE) {
+ if (s->rx_level >= 4) {
+ s->sssr |= SSSR_RFS;
+ } else {
+ s->sssr &= ~SSSR_RFS;
+ }
+ if (s->rx_level) {
+ s->sssr |= SSSR_RNE;
+ } else {
+ s->sssr &= ~SSSR_RNE;
+ }
+ /* TX FIFO is never filled, so it is always in underrun
+ condition if SSP is enabled */
+ s->sssr |= SSSR_TFS;
+ s->sssr |= SSSR_TNF;
+ }
+
+ strongarm_ssp_int_update(s);
+}
+
+static uint32_t strongarm_ssp_read(void *opaque, target_phys_addr_t addr)
+{
+ StrongARMSSPState *s = opaque;
+ uint32_t retval;
+
+ switch (addr) {
+ case SSCR0:
+ return s->sscr[0];
+ case SSCR1:
+ return s->sscr[1];
+ case SSSR:
+ return s->sssr;
+ case SSDR:
+ if (~s->sscr[0] & SSCR0_SSE) {
+ return 0xffffffff;
+ }
+ if (s->rx_level < 1) {
+ printf("%s: SSP Rx Underrun\n", __func__);
+ return 0xffffffff;
+ }
+ s->rx_level--;
+ retval = s->rx_fifo[s->rx_start++];
+ s->rx_start &= 0x7;
+ strongarm_ssp_fifo_update(s);
+ return retval;
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ break;
+ }
+ return 0;
+}
+
+static void strongarm_ssp_write(void *opaque, target_phys_addr_t addr,
+ uint32_t value)
+{
+ StrongARMSSPState *s = opaque;
+
+ switch (addr) {
+ case SSCR0:
+ s->sscr[0] = value & 0xffbf;
+ if ((s->sscr[0] & SSCR0_SSE) && SSCR0_DSS(value) < 4) {
+ printf("%s: Wrong data size: %i bits\n", __func__,
+ SSCR0_DSS(value));
+ }
+ if (!(value & SSCR0_SSE)) {
+ s->sssr = 0;
+ s->rx_level = 0;
+ }
+ strongarm_ssp_fifo_update(s);
+ break;
+
+ case SSCR1:
+ s->sscr[1] = value & 0x2f;
+ if (value & SSCR1_LBM) {
+ printf("%s: Attempt to use SSP LBM mode\n", __func__);
+ }
+ strongarm_ssp_fifo_update(s);
+ break;
+
+ case SSSR:
+ s->sssr &= ~(value & SSSR_RW);
+ strongarm_ssp_int_update(s);
+ break;
+
+ case SSDR:
+ if (SSCR0_UWIRE(s->sscr[0])) {
+ value &= 0xff;
+ } else
+ /* Note how 32bits overflow does no harm here */
+ value &= (1 << SSCR0_DSS(s->sscr[0])) - 1;
+
+ /* Data goes from here to the Tx FIFO and is shifted out from
+ * there directly to the slave, no need to buffer it.
+ */
+ if (s->sscr[0] & SSCR0_SSE) {
+ uint32_t readval;
+ if (s->sscr[1] & SSCR1_LBM) {
+ readval = value;
+ } else {
+ readval = ssi_transfer(s->bus, value);
+ }
+
+ if (s->rx_level < 0x08) {
+ s->rx_fifo[(s->rx_start + s->rx_level++) & 0x7] = readval;
+ } else {
+ s->sssr |= SSSR_ROR;
+ }
+ }
+ strongarm_ssp_fifo_update(s);
+ break;
+
+ default:
+ printf("%s: Bad register 0x" TARGET_FMT_plx "\n", __func__, addr);
+ break;
+ }
+}
+
+static CPUReadMemoryFunc * const strongarm_ssp_readfn[] = {
+ strongarm_ssp_read,
+ strongarm_ssp_read,
+ strongarm_ssp_read,
+};
+
+static CPUWriteMemoryFunc * const strongarm_ssp_writefn[] = {
+ strongarm_ssp_write,
+ strongarm_ssp_write,
+ strongarm_ssp_write,
+};
+
+static int strongarm_ssp_post_load(void *opaque, int version_id)
+{
+ StrongARMSSPState *s = opaque;
+
+ strongarm_ssp_fifo_update(s);
+
+ return 0;
+}
+
+static int strongarm_ssp_init(SysBusDevice *dev)
+{
+ int iomemtype;
+ StrongARMSSPState *s = FROM_SYSBUS(StrongARMSSPState, dev);
+
+ sysbus_init_irq(dev, &s->irq);
+
+ iomemtype = cpu_register_io_memory(strongarm_ssp_readfn,
+ strongarm_ssp_writefn, s,
+ DEVICE_NATIVE_ENDIAN);
+ sysbus_init_mmio(dev, 0x1000, iomemtype);
+
+ s->bus = ssi_create_bus(&dev->qdev, "ssi");
+ return 0;
+}
+
+static void strongarm_ssp_reset(DeviceState *dev)
+{
+ StrongARMSSPState *s = DO_UPCAST(StrongARMSSPState, busdev.qdev, dev);
+ s->sssr = 0x03; /* 3 bit data, SPI, disabled */
+ s->rx_start = 0;
+ s->rx_level = 0;
+}
+
+static const VMStateDescription vmstate_strongarm_ssp_regs = {
+ .name = "strongarm-ssp",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .post_load = strongarm_ssp_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT16_ARRAY(sscr, StrongARMSSPState, 2),
+ VMSTATE_UINT16(sssr, StrongARMSSPState),
+ VMSTATE_UINT16_ARRAY(rx_fifo, StrongARMSSPState, 8),
+ VMSTATE_UINT8(rx_start, StrongARMSSPState),
+ VMSTATE_UINT8(rx_level, StrongARMSSPState),
+ VMSTATE_END_OF_LIST(),
+ },
+};
+
+static SysBusDeviceInfo strongarm_ssp_info = {
+ .init = strongarm_ssp_init,
+ .qdev.name = "strongarm-ssp",
+ .qdev.desc = "StrongARM SSP controller",
+ .qdev.size = sizeof(StrongARMSSPState),
+ .qdev.reset = strongarm_ssp_reset,
+ .qdev.vmsd = &vmstate_strongarm_ssp_regs,
+};
+
+/* Main CPU functions */
+StrongARMState *sa1110_init(unsigned int sdram_size, const char *rev)
+{
+ StrongARMState *s;
+ qemu_irq *pic;
+ int i;
+
+ s = qemu_mallocz(sizeof(StrongARMState));
+
+ if (!rev) {
+ rev = "sa1110-b5";
+ }
+
+ if (strncmp(rev, "sa1110", 6)) {
+ error_report("Machine requires a SA1110 processor.\n");
+ exit(1);
+ }
+
+ s->env = cpu_init(rev);
+
+ if (!s->env) {
+ error_report("Unable to find CPU definition\n");
+ exit(1);
+ }
+
+ cpu_register_physical_memory(SA_SDCS0,
+ sdram_size, qemu_ram_alloc(NULL, "strongarm.sdram",
+ sdram_size) | IO_MEM_RAM);
+
+ pic = arm_pic_init_cpu(s->env);
+ s->pic = sysbus_create_varargs("strongarm_pic", 0x90050000,
+ pic[ARM_PIC_CPU_IRQ], pic[ARM_PIC_CPU_FIQ], NULL);
+
+ sysbus_create_varargs("pxa25x-timer", 0x90000000,
+ qdev_get_gpio_in(s->pic, SA_PIC_OSTC0),
+ qdev_get_gpio_in(s->pic, SA_PIC_OSTC1),
+ qdev_get_gpio_in(s->pic, SA_PIC_OSTC2),
+ qdev_get_gpio_in(s->pic, SA_PIC_OSTC3),
+ NULL);
+
+ sysbus_create_simple("strongarm-rtc", 0x90010000,
+ qdev_get_gpio_in(s->pic, SA_PIC_RTC_ALARM));
+
+ s->gpio = strongarm_gpio_init(0x90040000, s->pic);
+
+ s->ppc = sysbus_create_varargs("strongarm-ppc", 0x90060000, NULL);
+
+ for (i = 0; sa_serial[i].io_base; i++) {
+ DeviceState *dev = qdev_create(NULL, "strongarm-uart");
+ qdev_prop_set_chr(dev, "chardev", serial_hds[i]);
+ qdev_init_nofail(dev);
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0,
+ sa_serial[i].io_base);
+ sysbus_connect_irq(sysbus_from_qdev(dev), 0,
+ qdev_get_gpio_in(s->pic, sa_serial[i].irq));
+ }
+
+ s->ssp = sysbus_create_varargs("strongarm-ssp", 0x80070000,
+ qdev_get_gpio_in(s->pic, SA_PIC_SSP), NULL);
+ s->ssp_bus = (SSIBus *)qdev_get_child_bus(s->ssp, "ssi");
+
+ return s;
+}
+
+static void strongarm_register_devices(void)
+{
+ sysbus_register_withprop(&strongarm_pic_info);
+ sysbus_register_withprop(&strongarm_rtc_sysbus_info);
+ sysbus_register_withprop(&strongarm_gpio_info);
+ sysbus_register_withprop(&strongarm_ppc_info);
+ sysbus_register_withprop(&strongarm_uart_info);
+ sysbus_register_withprop(&strongarm_ssp_info);
+}
+device_init(strongarm_register_devices)