Merge remote-tracking branch 'remotes/xtensa/tags/20191023-xtensa' into staging

target/xtensa improvements for v4.2:

- regenerate and reimport test_mmuhifi_c3 core;
- add virt machine.

# gpg: Signature made Wed 23 Oct 2019 23:56:42 BST
# gpg:                using RSA key 2B67854B98E5327DCDEB17D851F9CC91F83FA044
# gpg:                issuer "jcmvbkbc@gmail.com"
# gpg: Good signature from "Max Filippov <filippov@cadence.com>" [unknown]
# gpg:                 aka "Max Filippov <max.filippov@cogentembedded.com>" [full]
# gpg:                 aka "Max Filippov <jcmvbkbc@gmail.com>" [full]
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB  17D8 51F9 CC91 F83F A044

* remotes/xtensa/tags/20191023-xtensa:
  hw/xtensa: add virt machine
  target/xtensa: regenerate and re-import test_mmuhifi_c3 core

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 202 insertions, 15 deletions

diff --git a/hw/xtensa/Kconfig b/hw/xtensa/Kconfig
index d72817d..0740657 100644
--- a/hw/xtensa/Kconfig
+++ b/hw/xtensa/Kconfig
@@ -1,6 +1,12 @@
 config XTENSA_SIM
     bool
 
+config XTENSA_VIRT
+    bool
+    select XTENSA_SIM
+    select PCI_EXPRESS_GENERIC_BRIDGE
+    select PCI_DEVICES
+
 config XTENSA_XTFPGA
     bool
     select OPENCORES_ETH
diff --git a/hw/xtensa/Makefile.objs b/hw/xtensa/Makefile.objs
index 0bbfccd..2b40e1b 100644
--- a/hw/xtensa/Makefile.objs
+++ b/hw/xtensa/Makefile.objs
@@ -2,4 +2,5 @@ obj-y += mx_pic.o
 obj-y += pic_cpu.o
 obj-y += xtensa_memory.o
 obj-$(CONFIG_XTENSA_SIM) += sim.o
+obj-$(CONFIG_XTENSA_VIRT) += virt.o
 obj-$(CONFIG_XTENSA_XTFPGA) += xtfpga.o
diff --git a/hw/xtensa/sim.c b/hw/xtensa/sim.c
index 981dbb7..a22743a 100644
--- a/hw/xtensa/sim.c
+++ b/hw/xtensa/sim.c
@@ -37,6 +37,7 @@
 #include "exec/address-spaces.h"
 #include "qemu/error-report.h"
 #include "xtensa_memory.h"
+#include "xtensa_sim.h"
 
 static uint64_t translate_phys_addr(void *opaque, uint64_t addr)
 {
@@ -52,12 +53,11 @@ static void sim_reset(void *opaque)
     cpu_reset(CPU(cpu));
 }
 
-static void xtensa_sim_init(MachineState *machine)
+XtensaCPU *xtensa_sim_common_init(MachineState *machine)
 {
     XtensaCPU *cpu = NULL;
     CPUXtensaState *env = NULL;
     ram_addr_t ram_size = machine->ram_size;
-    const char *kernel_filename = machine->kernel_filename;
     int n;
 
     for (n = 0; n < machine->smp.cpus; n++) {
@@ -89,30 +89,41 @@ static void xtensa_sim_init(MachineState *machine)
         xtensa_create_memory_regions(&sysram, "xtensa.sysram",
                                      get_system_memory());
     }
-
     if (serial_hd(0)) {
         xtensa_sim_open_console(serial_hd(0));
     }
-    if (kernel_filename) {
-        uint64_t elf_entry;
-        uint64_t elf_lowaddr;
+    return cpu;
+}
+
+void xtensa_sim_load_kernel(XtensaCPU *cpu, MachineState *machine)
+{
+    const char *kernel_filename = machine->kernel_filename;
 #ifdef TARGET_WORDS_BIGENDIAN
-        int success = load_elf(kernel_filename, NULL,
-                               translate_phys_addr, cpu,
-                               &elf_entry, &elf_lowaddr,
-                               NULL, 1, EM_XTENSA, 0, 0);
+    int big_endian = true;
 #else
-        int success = load_elf(kernel_filename, NULL,
-                               translate_phys_addr, cpu,
-                               &elf_entry, &elf_lowaddr,
-                               NULL, 0, EM_XTENSA, 0, 0);
+    int big_endian = false;
 #endif
+
+    if (kernel_filename) {
+        uint64_t elf_entry;
+        uint64_t elf_lowaddr;
+        int success = load_elf(kernel_filename, NULL, translate_phys_addr, cpu,
+                               &elf_entry, &elf_lowaddr, NULL, big_endian,
+                               EM_XTENSA, 0, 0);
+
         if (success > 0) {
-            env->pc = elf_entry;
+            cpu->env.pc = elf_entry;
         }
     }
 }
 
+static void xtensa_sim_init(MachineState *machine)
+{
+    XtensaCPU *cpu = xtensa_sim_common_init(machine);
+
+    xtensa_sim_load_kernel(cpu, machine);
+}
+
 static void xtensa_sim_machine_init(MachineClass *mc)
 {
     mc->desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")";
diff --git a/hw/xtensa/virt.c b/hw/xtensa/virt.c
new file mode 100644
index 0000000..b22dcf9
--- /dev/null
+++ b/hw/xtensa/virt.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2019, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "cpu.h"
+#include "sysemu/reset.h"
+#include "sysemu/sysemu.h"
+#include "hw/boards.h"
+#include "hw/loader.h"
+#include "hw/pci-host/gpex.h"
+#include "net/net.h"
+#include "elf.h"
+#include "exec/memory.h"
+#include "exec/address-spaces.h"
+#include "qemu/error-report.h"
+#include "xtensa_memory.h"
+#include "xtensa_sim.h"
+
+static void create_pcie(CPUXtensaState *env, int irq_base, hwaddr addr_base)
+{
+    hwaddr base_ecam = addr_base + 0x00100000;
+    hwaddr size_ecam =             0x03f00000;
+    hwaddr base_pio  = addr_base + 0x00000000;
+    hwaddr size_pio  =             0x00010000;
+    hwaddr base_mmio = addr_base + 0x04000000;
+    hwaddr size_mmio =             0x08000000;
+
+    MemoryRegion *ecam_alias;
+    MemoryRegion *ecam_reg;
+    MemoryRegion *pio_alias;
+    MemoryRegion *pio_reg;
+    MemoryRegion *mmio_alias;
+    MemoryRegion *mmio_reg;
+
+    DeviceState *dev;
+    PCIHostState *pci;
+    qemu_irq *extints;
+    int i;
+
+    dev = qdev_create(NULL, TYPE_GPEX_HOST);
+    qdev_init_nofail(dev);
+
+    /* Map only the first size_ecam bytes of ECAM space. */
+    ecam_alias = g_new0(MemoryRegion, 1);
+    ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+    memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam",
+                             ecam_reg, 0, size_ecam);
+    memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias);
+
+    /*
+     * Map the MMIO window into system address space so as to expose
+     * the section of PCI MMIO space which starts at the same base address
+     * (ie 1:1 mapping for that part of PCI MMIO space visible through
+     * the window).
+     */
+    mmio_alias = g_new0(MemoryRegion, 1);
+    mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
+    memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio",
+                             mmio_reg, base_mmio, size_mmio);
+    memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias);
+
+    /* Map IO port space. */
+    pio_alias = g_new0(MemoryRegion, 1);
+    pio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 2);
+    memory_region_init_alias(pio_alias, OBJECT(dev), "pcie-pio",
+                             pio_reg, 0, size_pio);
+    memory_region_add_subregion(get_system_memory(), base_pio, pio_alias);
+
+    /* Connect IRQ lines. */
+    extints = xtensa_get_extints(env);
+
+    for (i = 0; i < GPEX_NUM_IRQS; i++) {
+        void *q = extints[irq_base + i];
+
+        sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, q);
+        gpex_set_irq_num(GPEX_HOST(dev), i, irq_base + i);
+    }
+
+    pci = PCI_HOST_BRIDGE(dev);
+    if (pci->bus) {
+        for (i = 0; i < nb_nics; i++) {
+            NICInfo *nd = &nd_table[i];
+
+            if (!nd->model) {
+                nd->model = g_strdup("virtio");
+            }
+
+            pci_nic_init_nofail(nd, pci->bus, nd->model, NULL);
+        }
+    }
+}
+
+static void xtensa_virt_init(MachineState *machine)
+{
+    XtensaCPU *cpu = xtensa_sim_common_init(machine);
+    CPUXtensaState *env = &cpu->env;
+
+    create_pcie(env, 0, 0xf0000000);
+    xtensa_sim_load_kernel(cpu, machine);
+}
+
+static void xtensa_virt_machine_init(MachineClass *mc)
+{
+    mc->desc = "virt machine (" XTENSA_DEFAULT_CPU_MODEL ")";
+    mc->init = xtensa_virt_init;
+    mc->max_cpus = 32;
+    mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE;
+}
+
+DEFINE_MACHINE("virt", xtensa_virt_machine_init)
diff --git a/hw/xtensa/xtensa_sim.h b/hw/xtensa/xtensa_sim.h
new file mode 100644
index 0000000..bdc92f3
--- /dev/null
+++ b/hw/xtensa/xtensa_sim.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2019, Max Filippov, Open Source and Linux Lab.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the Open Source and Linux Lab nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef XTENSA_SIM_H
+#define XTENSA_SIM_H
+
+XtensaCPU *xtensa_sim_common_init(MachineState *machine);
+void xtensa_sim_load_kernel(XtensaCPU *cpu, MachineState *machine);
+
+#endif