Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 367 insertions, 0 deletions

diff --git a/qemu/hw/gpio/pl061.c b/qemu/hw/gpio/pl061.c
new file mode 100644
index 000000000..4ba730b47
--- /dev/null
+++ b/qemu/hw/gpio/pl061.c
@@ -0,0 +1,367 @@
+/*
+ * Arm PrimeCell PL061 General Purpose IO with additional
+ * Luminary Micro Stellaris bits.
+ *
+ * Copyright (c) 2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "hw/sysbus.h"
+
+//#define DEBUG_PL061 1
+
+#ifdef DEBUG_PL061
+#define DPRINTF(fmt, ...) \
+do { printf("pl061: " fmt , ## __VA_ARGS__); } while (0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "pl061: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
+#else
+#define DPRINTF(fmt, ...) do {} while(0)
+#define BADF(fmt, ...) \
+do { fprintf(stderr, "pl061: error: " fmt , ## __VA_ARGS__);} while (0)
+#endif
+
+static const uint8_t pl061_id[12] =
+  { 0x00, 0x00, 0x00, 0x00, 0x61, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
+static const uint8_t pl061_id_luminary[12] =
+  { 0x00, 0x00, 0x00, 0x00, 0x61, 0x00, 0x18, 0x01, 0x0d, 0xf0, 0x05, 0xb1 };
+
+#define TYPE_PL061 "pl061"
+#define PL061(obj) OBJECT_CHECK(PL061State, (obj), TYPE_PL061)
+
+typedef struct PL061State {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    uint32_t locked;
+    uint32_t data;
+    uint32_t old_out_data;
+    uint32_t old_in_data;
+    uint32_t dir;
+    uint32_t isense;
+    uint32_t ibe;
+    uint32_t iev;
+    uint32_t im;
+    uint32_t istate;
+    uint32_t afsel;
+    uint32_t dr2r;
+    uint32_t dr4r;
+    uint32_t dr8r;
+    uint32_t odr;
+    uint32_t pur;
+    uint32_t pdr;
+    uint32_t slr;
+    uint32_t den;
+    uint32_t cr;
+    uint32_t float_high;
+    uint32_t amsel;
+    qemu_irq irq;
+    qemu_irq out[8];
+    const unsigned char *id;
+} PL061State;
+
+static const VMStateDescription vmstate_pl061 = {
+    .name = "pl061",
+    .version_id = 3,
+    .minimum_version_id = 3,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(locked, PL061State),
+        VMSTATE_UINT32(data, PL061State),
+        VMSTATE_UINT32(old_out_data, PL061State),
+        VMSTATE_UINT32(old_in_data, PL061State),
+        VMSTATE_UINT32(dir, PL061State),
+        VMSTATE_UINT32(isense, PL061State),
+        VMSTATE_UINT32(ibe, PL061State),
+        VMSTATE_UINT32(iev, PL061State),
+        VMSTATE_UINT32(im, PL061State),
+        VMSTATE_UINT32(istate, PL061State),
+        VMSTATE_UINT32(afsel, PL061State),
+        VMSTATE_UINT32(dr2r, PL061State),
+        VMSTATE_UINT32(dr4r, PL061State),
+        VMSTATE_UINT32(dr8r, PL061State),
+        VMSTATE_UINT32(odr, PL061State),
+        VMSTATE_UINT32(pur, PL061State),
+        VMSTATE_UINT32(pdr, PL061State),
+        VMSTATE_UINT32(slr, PL061State),
+        VMSTATE_UINT32(den, PL061State),
+        VMSTATE_UINT32(cr, PL061State),
+        VMSTATE_UINT32(float_high, PL061State),
+        VMSTATE_UINT32_V(amsel, PL061State, 2),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void pl061_update(PL061State *s)
+{
+    uint8_t changed;
+    uint8_t mask;
+    uint8_t out;
+    int i;
+
+    DPRINTF("dir = %d, data = %d\n", s->dir, s->data);
+
+    /* Outputs float high.  */
+    /* FIXME: This is board dependent.  */
+    out = (s->data & s->dir) | ~s->dir;
+    changed = s->old_out_data ^ out;
+    if (changed) {
+        s->old_out_data = out;
+        for (i = 0; i < 8; i++) {
+            mask = 1 << i;
+            if (changed & mask) {
+                DPRINTF("Set output %d = %d\n", i, (out & mask) != 0);
+                qemu_set_irq(s->out[i], (out & mask) != 0);
+            }
+        }
+    }
+
+    /* Inputs */
+    changed = (s->old_in_data ^ s->data) & ~s->dir;
+    if (changed) {
+        s->old_in_data = s->data;
+        for (i = 0; i < 8; i++) {
+            mask = 1 << i;
+            if (changed & mask) {
+                DPRINTF("Changed input %d = %d\n", i, (s->data & mask) != 0);
+
+                if (!(s->isense & mask)) {
+                    /* Edge interrupt */
+                    if (s->ibe & mask) {
+                        /* Any edge triggers the interrupt */
+                        s->istate |= mask;
+                    } else {
+                        /* Edge is selected by IEV */
+                        s->istate |= ~(s->data ^ s->iev) & mask;
+                    }
+                }
+            }
+        }
+    }
+
+    /* Level interrupt */
+    s->istate |= ~(s->data ^ s->iev) & s->isense;
+
+    DPRINTF("istate = %02X\n", s->istate);
+
+    qemu_set_irq(s->irq, (s->istate & s->im) != 0);
+}
+
+static uint64_t pl061_read(void *opaque, hwaddr offset,
+                           unsigned size)
+{
+    PL061State *s = (PL061State *)opaque;
+
+    if (offset >= 0xfd0 && offset < 0x1000) {
+        return s->id[(offset - 0xfd0) >> 2];
+    }
+    if (offset < 0x400) {
+        return s->data & (offset >> 2);
+    }
+    switch (offset) {
+    case 0x400: /* Direction */
+        return s->dir;
+    case 0x404: /* Interrupt sense */
+        return s->isense;
+    case 0x408: /* Interrupt both edges */
+        return s->ibe;
+    case 0x40c: /* Interrupt event */
+        return s->iev;
+    case 0x410: /* Interrupt mask */
+        return s->im;
+    case 0x414: /* Raw interrupt status */
+        return s->istate;
+    case 0x418: /* Masked interrupt status */
+        return s->istate & s->im;
+    case 0x420: /* Alternate function select */
+        return s->afsel;
+    case 0x500: /* 2mA drive */
+        return s->dr2r;
+    case 0x504: /* 4mA drive */
+        return s->dr4r;
+    case 0x508: /* 8mA drive */
+        return s->dr8r;
+    case 0x50c: /* Open drain */
+        return s->odr;
+    case 0x510: /* Pull-up */
+        return s->pur;
+    case 0x514: /* Pull-down */
+        return s->pdr;
+    case 0x518: /* Slew rate control */
+        return s->slr;
+    case 0x51c: /* Digital enable */
+        return s->den;
+    case 0x520: /* Lock */
+        return s->locked;
+    case 0x524: /* Commit */
+        return s->cr;
+    case 0x528: /* Analog mode select */
+        return s->amsel;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl061_read: Bad offset %x\n", (int)offset);
+        return 0;
+    }
+}
+
+static void pl061_write(void *opaque, hwaddr offset,
+                        uint64_t value, unsigned size)
+{
+    PL061State *s = (PL061State *)opaque;
+    uint8_t mask;
+
+    if (offset < 0x400) {
+        mask = (offset >> 2) & s->dir;
+        s->data = (s->data & ~mask) | (value & mask);
+        pl061_update(s);
+        return;
+    }
+    switch (offset) {
+    case 0x400: /* Direction */
+        s->dir = value & 0xff;
+        break;
+    case 0x404: /* Interrupt sense */
+        s->isense = value & 0xff;
+        break;
+    case 0x408: /* Interrupt both edges */
+        s->ibe = value & 0xff;
+        break;
+    case 0x40c: /* Interrupt event */
+        s->iev = value & 0xff;
+        break;
+    case 0x410: /* Interrupt mask */
+        s->im = value & 0xff;
+        break;
+    case 0x41c: /* Interrupt clear */
+        s->istate &= ~value;
+        break;
+    case 0x420: /* Alternate function select */
+        mask = s->cr;
+        s->afsel = (s->afsel & ~mask) | (value & mask);
+        break;
+    case 0x500: /* 2mA drive */
+        s->dr2r = value & 0xff;
+        break;
+    case 0x504: /* 4mA drive */
+        s->dr4r = value & 0xff;
+        break;
+    case 0x508: /* 8mA drive */
+        s->dr8r = value & 0xff;
+        break;
+    case 0x50c: /* Open drain */
+        s->odr = value & 0xff;
+        break;
+    case 0x510: /* Pull-up */
+        s->pur = value & 0xff;
+        break;
+    case 0x514: /* Pull-down */
+        s->pdr = value & 0xff;
+        break;
+    case 0x518: /* Slew rate control */
+        s->slr = value & 0xff;
+        break;
+    case 0x51c: /* Digital enable */
+        s->den = value & 0xff;
+        break;
+    case 0x520: /* Lock */
+        s->locked = (value != 0xacce551);
+        break;
+    case 0x524: /* Commit */
+        if (!s->locked)
+            s->cr = value & 0xff;
+        break;
+    case 0x528:
+        s->amsel = value & 0xff;
+        break;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl061_write: Bad offset %x\n", (int)offset);
+    }
+    pl061_update(s);
+}
+
+static void pl061_reset(PL061State *s)
+{
+  s->locked = 1;
+  s->cr = 0xff;
+}
+
+static void pl061_set_irq(void * opaque, int irq, int level)
+{
+    PL061State *s = (PL061State *)opaque;
+    uint8_t mask;
+
+    mask = 1 << irq;
+    if ((s->dir & mask) == 0) {
+        s->data &= ~mask;
+        if (level)
+            s->data |= mask;
+        pl061_update(s);
+    }
+}
+
+static const MemoryRegionOps pl061_ops = {
+    .read = pl061_read,
+    .write = pl061_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static int pl061_initfn(SysBusDevice *sbd)
+{
+    DeviceState *dev = DEVICE(sbd);
+    PL061State *s = PL061(dev);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &pl061_ops, s, "pl061", 0x1000);
+    sysbus_init_mmio(sbd, &s->iomem);
+    sysbus_init_irq(sbd, &s->irq);
+    qdev_init_gpio_in(dev, pl061_set_irq, 8);
+    qdev_init_gpio_out(dev, s->out, 8);
+    pl061_reset(s);
+    return 0;
+}
+
+static void pl061_luminary_init(Object *obj)
+{
+    PL061State *s = PL061(obj);
+
+    s->id = pl061_id_luminary;
+}
+
+static void pl061_init(Object *obj)
+{
+    PL061State *s = PL061(obj);
+
+    s->id = pl061_id;
+}
+
+static void pl061_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = pl061_initfn;
+    dc->vmsd = &vmstate_pl061;
+}
+
+static const TypeInfo pl061_info = {
+    .name          = TYPE_PL061,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(PL061State),
+    .instance_init = pl061_init,
+    .class_init    = pl061_class_init,
+};
+
+static const TypeInfo pl061_luminary_info = {
+    .name          = "pl061_luminary",
+    .parent        = TYPE_PL061,
+    .instance_init = pl061_luminary_init,
+};
+
+static void pl061_register_types(void)
+{
+    type_register_static(&pl061_info);
+    type_register_static(&pl061_luminary_info);
+}
+
+type_init(pl061_register_types)