[Qemu-devel] [PATCH v3 02/11] AARCH64: add a57core

["Mian M. Hamayun" <m.hamayun@virtualopensystems.com>]

From: John Rigby <john.rigby@linaro.org>

Just an copy of a15 with a57 substituting a15 for now.

Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Mian M. Hamayun <m.hamayun@virtualopensystems.com>
---
 hw/cpu/Makefile.objs |   1 +
 hw/cpu/a57mpcore.c   | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++
 target-arm/cpu.c     |   9 ++++
 3 files changed, 132 insertions(+)
 create mode 100644 hw/cpu/a57mpcore.c

diff --git a/hw/cpu/Makefile.objs b/hw/cpu/Makefile.objs
index df287c1..22e9567 100644
--- a/hw/cpu/Makefile.objs
+++ b/hw/cpu/Makefile.objs
@@ -1,5 +1,6 @@
 obj-$(CONFIG_ARM11MPCORE) += arm11mpcore.o
 obj-$(CONFIG_A9MPCORE) += a9mpcore.o
 obj-$(CONFIG_A15MPCORE) += a15mpcore.o
+obj-$(CONFIG_A57MPCORE) += a57mpcore.o
 obj-$(CONFIG_ICC_BUS) += icc_bus.o
 
diff --git a/hw/cpu/a57mpcore.c b/hw/cpu/a57mpcore.c
new file mode 100644
index 0000000..4be277f
--- /dev/null
+++ b/hw/cpu/a57mpcore.c
@@ -0,0 +1,122 @@
+/*
+ * Cortex-A57MPCore internal peripheral emulation.
+ *
+ * Copyright (c) 2012 Linaro Limited.
+ * Written by Peter Maydell.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 "hw/sysbus.h"
+#include "sysemu/kvm.h"
+
+/* A57MP private memory region.  */
+
+#define TYPE_A57MPCORE_PRIV "a57mpcore_priv"
+#define A57MPCORE_PRIV(obj) \
+    OBJECT_CHECK(A57MPPrivState, (obj), TYPE_A57MPCORE_PRIV)
+
+typedef struct A57MPPrivState {
+    /*< private >*/
+    SysBusDevice parent_obj;
+    /*< public >*/
+
+    uint32_t num_cpu;
+    uint32_t num_irq;
+    MemoryRegion container;
+    DeviceState *gic;
+} A57MPPrivState;
+
+static void a57mp_priv_set_irq(void *opaque, int irq, int level)
+{
+    A57MPPrivState *s = (A57MPPrivState *)opaque;
+    qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
+}
+
+static int a57mp_priv_init(SysBusDevice *dev)
+{
+    A57MPPrivState *s = A57MPCORE_PRIV(dev);
+    SysBusDevice *busdev;
+    const char *gictype = "arm_gic";
+
+    if (kvm_irqchip_in_kernel()) {
+        gictype = "kvm-arm-gic";
+    }
+
+    s->gic = qdev_create(NULL, gictype);
+    qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
+    qdev_prop_set_uint32(s->gic, "num-irq", s->num_irq);
+    qdev_prop_set_uint32(s->gic, "revision", 2);
+    qdev_init_nofail(s->gic);
+    busdev = SYS_BUS_DEVICE(s->gic);
+
+    /* Pass through outbound IRQ lines from the GIC */
+    sysbus_pass_irq(dev, busdev);
+
+    /* Pass through inbound GPIO lines to the GIC */
+    qdev_init_gpio_in(DEVICE(dev), a57mp_priv_set_irq, s->num_irq - 32);
+
+    /* Memory map (addresses are offsets from PERIPHBASE):
+     *  0x0000-0x0fff -- reserved
+     *  0x1000-0x1fff -- GIC Distributor
+     *  0x2000-0x2fff -- GIC CPU interface
+     *  0x4000-0x4fff -- GIC virtual interface control (not modelled)
+     *  0x5000-0x5fff -- GIC virtual interface control (not modelled)
+     *  0x6000-0x7fff -- GIC virtual CPU interface (not modelled)
+     */
+    memory_region_init(&s->container, OBJECT(s),
+                       "a57mp-priv-container", 0x8000);
+    memory_region_add_subregion(&s->container, 0x1000,
+                                sysbus_mmio_get_region(busdev, 0));
+    memory_region_add_subregion(&s->container, 0x2000,
+                                sysbus_mmio_get_region(busdev, 1));
+
+    sysbus_init_mmio(dev, &s->container);
+    return 0;
+}
+
+static Property a57mp_priv_properties[] = {
+    DEFINE_PROP_UINT32("num-cpu", A57MPPrivState, num_cpu, 1),
+    /* The Cortex-A57MP may have anything from 0 to 224 external interrupt
+     * IRQ lines (with another 32 internal). We default to 128+32, which
+     * is the number provided by the Cortex-A57MP test chip in the
+     * Versatile Express A57 development board.
+     * Other boards may differ and should set this property appropriately.
+     */
+    DEFINE_PROP_UINT32("num-irq", A57MPPrivState, num_irq, 160),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void a57mp_priv_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+    k->init = a57mp_priv_init;
+    dc->props = a57mp_priv_properties;
+    /* We currently have no savable state */
+}
+
+static const TypeInfo a57mp_priv_info = {
+    .name  = TYPE_A57MPCORE_PRIV,
+    .parent = TYPE_SYS_BUS_DEVICE,
+    .instance_size  = sizeof(A57MPPrivState),
+    .class_init = a57mp_priv_class_init,
+};
+
+static void a57mp_register_types(void)
+{
+    type_register_static(&a57mp_priv_info);
+}
+
+type_init(a57mp_register_types)
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index d40f2a7..5d811b9 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -684,6 +684,14 @@ static void cortex_a15_initfn(Object *obj)
     define_arm_cp_regs(cpu, cortexa15_cp_reginfo);
 }
 
+static void cortex_a57_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+    set_feature(&cpu->env, ARM_FEATURE_V8);
+    set_feature(&cpu->env, ARM_FEATURE_AARCH64);
+    /* TODO: See if we need to set some more features for ARMv8 ? */
+}
+
 static void ti925t_initfn(Object *obj)
 {
     ARMCPU *cpu = ARM_CPU(obj);
@@ -872,6 +880,7 @@ static const ARMCPUInfo arm_cpus[] = {
     { .name = "cortex-a8",   .initfn = cortex_a8_initfn },
     { .name = "cortex-a9",   .initfn = cortex_a9_initfn },
     { .name = "cortex-a15",  .initfn = cortex_a15_initfn },
+    { .name = "cortex-a57",  .initfn = cortex_a57_initfn },
     { .name = "ti925t",      .initfn = ti925t_initfn },
     { .name = "sa1100",      .initfn = sa1100_initfn },
     { .name = "sa1110",      .initfn = sa1110_initfn },
-- 
1.8.1.2