Introduce Virtio-loopback epsilon release:

Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.

Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9

5 files changed, 127 insertions, 0 deletions

diff --git a/include/hw/mips/bios.h b/include/hw/mips/bios.h
new file mode 100644
index 000000000..c03007999
--- /dev/null
+++ b/include/hw/mips/bios.h
@@ -0,0 +1,14 @@
+#ifndef HW_MIPS_BIOS_H
+#define HW_MIPS_BIOS_H
+
+#include "qemu/units.h"
+#include "cpu.h"
+
+#define BIOS_SIZE (4 * MiB)
+#ifdef TARGET_WORDS_BIGENDIAN
+#define BIOS_FILENAME "mips_bios.bin"
+#else
+#define BIOS_FILENAME "mipsel_bios.bin"
+#endif
+
+#endif
diff --git a/include/hw/mips/bootloader.h b/include/hw/mips/bootloader.h
new file mode 100644
index 000000000..b5f48d71b
--- /dev/null
+++ b/include/hw/mips/bootloader.h
@@ -0,0 +1,22 @@
+/*
+ * Utility for QEMU MIPS to generate it's simple bootloader
+ *
+ * Copyright (C) 2020 Jiaxun Yang <jiaxun.yang@flygoat.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef HW_MIPS_BOOTLOADER_H
+#define HW_MIPS_BOOTLOADER_H
+
+#include "exec/cpu-defs.h"
+
+void bl_gen_jump_to(uint32_t **p, target_ulong jump_addr);
+void bl_gen_jump_kernel(uint32_t **p, target_ulong sp, target_ulong a0,
+                        target_ulong a1, target_ulong a2, target_ulong a3,
+                        target_ulong kernel_addr);
+void bl_gen_write_ulong(uint32_t **p, target_ulong addr, target_ulong val);
+void bl_gen_write_u32(uint32_t **p, target_ulong addr, uint32_t val);
+void bl_gen_write_u64(uint32_t **p, target_ulong addr, uint64_t val);
+
+#endif
diff --git a/include/hw/mips/cps.h b/include/hw/mips/cps.h
new file mode 100644
index 000000000..04d636246
--- /dev/null
+++ b/include/hw/mips/cps.h
@@ -0,0 +1,52 @@
+/*
+ * Coherent Processing System emulation.
+ *
+ * Copyright (c) 2016 Imagination Technologies
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MIPS_CPS_H
+#define MIPS_CPS_H
+
+#include "hw/sysbus.h"
+#include "hw/clock.h"
+#include "hw/misc/mips_cmgcr.h"
+#include "hw/intc/mips_gic.h"
+#include "hw/misc/mips_cpc.h"
+#include "hw/misc/mips_itu.h"
+#include "target/mips/cpu.h"
+#include "qom/object.h"
+
+#define TYPE_MIPS_CPS "mips-cps"
+OBJECT_DECLARE_SIMPLE_TYPE(MIPSCPSState, MIPS_CPS)
+
+struct MIPSCPSState {
+    SysBusDevice parent_obj;
+
+    uint32_t num_vp;
+    uint32_t num_irq;
+    char *cpu_type;
+
+    MemoryRegion container;
+    MIPSGCRState gcr;
+    MIPSGICState gic;
+    MIPSCPCState cpc;
+    MIPSITUState itu;
+    Clock *clock;
+};
+
+qemu_irq get_cps_irq(MIPSCPSState *cps, int pin_number);
+
+#endif
diff --git a/include/hw/mips/cpudevs.h b/include/hw/mips/cpudevs.h
new file mode 100644
index 000000000..f7c9728fa
--- /dev/null
+++ b/include/hw/mips/cpudevs.h
@@ -0,0 +1,14 @@
+#ifndef HW_MIPS_CPUDEVS_H
+#define HW_MIPS_CPUDEVS_H
+
+#include "target/mips/cpu-qom.h"
+
+/* Definitions for MIPS CPU internal devices.  */
+
+/* mips_int.c */
+void cpu_mips_irq_init_cpu(MIPSCPU *cpu);
+
+/* mips_timer.c */
+void cpu_mips_clock_init(MIPSCPU *cpu);
+
+#endif
diff --git a/include/hw/mips/mips.h b/include/hw/mips/mips.h
new file mode 100644
index 000000000..6c9c8805f
--- /dev/null
+++ b/include/hw/mips/mips.h
@@ -0,0 +1,25 @@
+#ifndef HW_MIPS_H
+#define HW_MIPS_H
+/* Definitions for mips board emulation.  */
+
+#include "qemu/units.h"
+
+/* Kernels can be configured with 64KB pages */
+#define INITRD_PAGE_SIZE (64 * KiB)
+
+#include "exec/memory.h"
+
+/* gt64xxx.c */
+PCIBus *gt64120_register(qemu_irq *pic);
+
+/* bonito.c */
+PCIBus *bonito_init(qemu_irq *pic);
+
+/* rc4030.c */
+typedef struct rc4030DMAState *rc4030_dma;
+void rc4030_dma_read(void *dma, uint8_t *buf, int len);
+void rc4030_dma_write(void *dma, uint8_t *buf, int len);
+
+DeviceState *rc4030_init(rc4030_dma **dmas, IOMMUMemoryRegion **dma_mr);
+
+#endif