[Qemu-devel] [PATCH v3 1/4] target-openrisc: New machine with IDE support

[Valentin Manea <valentin.manea@gmail.com>]

Create new OpenRISC machine(asim) with default IDE support. It will
incude more peripherals in order to run a fully fledged Linux computer.

Signed-off-by: Valentin Manea <valentin.manea@gmail.com>
---
 default-configs/or32-softmmu.mak |   3 +
 hw/openrisc/Makefile.objs        |   1 +
 hw/openrisc/openrisc_asim.c      | 202 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 206 insertions(+)
 create mode 100644 hw/openrisc/openrisc_asim.c

diff --git a/default-configs/or32-softmmu.mak b/default-configs/or32-softmmu.mak
index cce4746..c3ff078 100644
--- a/default-configs/or32-softmmu.mak
+++ b/default-configs/or32-softmmu.mak
@@ -2,3 +2,6 @@
 
 CONFIG_SERIAL=y
 CONFIG_OPENCORES_ETH=y
+CONFIG_IDE_CORE=y
+CONFIG_IDE_QDEV=y
+CONFIG_IDE_MMIO=y
diff --git a/hw/openrisc/Makefile.objs b/hw/openrisc/Makefile.objs
index 61246b1..f266f5d 100644
--- a/hw/openrisc/Makefile.objs
+++ b/hw/openrisc/Makefile.objs
@@ -1,2 +1,3 @@
 obj-y = pic_cpu.o cputimer.o
 obj-y += openrisc_sim.o 
+obj-y += openrisc_asim.o
diff --git a/hw/openrisc/openrisc_asim.c b/hw/openrisc/openrisc_asim.c
new file mode 100644
index 0000000..80aa5ed
--- /dev/null
+++ b/hw/openrisc/openrisc_asim.c
@@ -0,0 +1,202 @@
+/*
+ * OpenRISC simulator with more peripherals
+ *
+ * Copyright (c) 2011-2014 Jia Liu <proljc@gmail.com>
+ *                         Feng Gao <gf91597@gmail.com>
+ *                         Valentin Manea <valentin.manea@gmail.com>
+ *
+ * This OpenRISC machine supports more hardware - same configuration as the
+ * jor1k(http://s-macke.github.io/jor1k). Currently the default Linux branch
+ * does not have all the support for this machine so the jor1k Linux kernel is
+ * needed for more advanced usecases: X support, compiling etc. You can download
+ * a precompiled image here http://mrs.ro/dl/or1k/vmlinux or compile it using
+ * the instructions at https://github.com/s-macke/jor1k/wiki
+ *
+ * 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 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/>.
+ */
+
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "elf.h"
+#include "hw/char/serial.h"
+#include "net/net.h"
+#include "hw/loader.h"
+#include "hw/ide.h"
+#include "exec/address-spaces.h"
+#include "sysemu/sysemu.h"
+#include "hw/sysbus.h"
+#include "sysemu/blockdev.h"
+#include "sysemu/qtest.h"
+
+#define KERNEL_LOAD_ADDR 0x100
+
+enum {
+    OR_UART0,
+    OR_IDE,
+    OR_OPENETH
+};
+
+static hwaddr mem_map[] = {
+    [OR_UART0] = 0x90000000,
+    [OR_IDE] = 0x9e000000,
+    [OR_OPENETH] = 0x92000000,
+};
+
+
+static void main_cpu_reset(void *opaque)
+{
+    OpenRISCCPU *cpu = opaque;
+
+    cpu_reset(CPU(cpu));
+}
+
+static void openrisc_sim_ide_init(MemoryRegion *address_space,
+                                  hwaddr base,
+                                  hwaddr descriptors,
+                                  qemu_irq irq)
+{
+    DeviceState *dev;
+    SysBusDevice *busdev;
+    DriveInfo *dinfo;
+
+
+    dinfo = drive_get(IF_IDE, 0, 0);
+    if (!dinfo) {
+        return;
+    }
+    dev = qdev_create(NULL, "mmio-ide");
+    busdev = SYS_BUS_DEVICE(dev);
+    sysbus_connect_irq(busdev, 0, irq);
+    qdev_prop_set_uint32(dev, "shift", 2);
+    qdev_init_nofail(dev);
+    memory_region_add_subregion(address_space, base,
+                                sysbus_mmio_get_region(busdev, 0));
+    memory_region_add_subregion(address_space, descriptors,
+                                sysbus_mmio_get_region(busdev, 1));
+    mmio_ide_init_drives(dev, dinfo, NULL);
+}
+
+static void openrisc_sim_net_init(MemoryRegion *address_space,
+                                  hwaddr base,
+                                  hwaddr descriptors,
+                                  qemu_irq irq, NICInfo *nd)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_create(NULL, "open_eth");
+    qdev_set_nic_properties(dev, nd);
+    qdev_init_nofail(dev);
+
+    s = SYS_BUS_DEVICE(dev);
+    sysbus_connect_irq(s, 0, irq);
+    memory_region_add_subregion(address_space, base,
+                                sysbus_mmio_get_region(s, 0));
+    memory_region_add_subregion(address_space, descriptors,
+                                sysbus_mmio_get_region(s, 1));
+}
+
+static void cpu_openrisc_load_kernel(ram_addr_t ram_size,
+                                     const char *kernel_filename,
+                                     OpenRISCCPU *cpu)
+{
+    long kernel_size;
+    uint64_t elf_entry;
+    hwaddr entry;
+
+    if (kernel_filename && !qtest_enabled()) {
+        kernel_size = load_elf(kernel_filename, NULL, NULL,
+                               &elf_entry, NULL, NULL, 1, ELF_MACHINE, 1);
+        entry = elf_entry;
+        if (kernel_size < 0) {
+            kernel_size = load_uimage(kernel_filename,
+                                      &entry, NULL, NULL);
+        }
+        if (kernel_size < 0) {
+            kernel_size = load_image_targphys(kernel_filename,
+                                              KERNEL_LOAD_ADDR,
+                                              ram_size - KERNEL_LOAD_ADDR);
+            entry = KERNEL_LOAD_ADDR;
+        }
+
+        if (kernel_size < 0) {
+            fprintf(stderr, "QEMU: couldn't load the kernel '%s'\n",
+                    kernel_filename);
+            exit(1);
+        }
+        cpu->env.pc = entry;
+    }
+}
+
+static void openrisc_sim_init(MachineState *machine)
+{
+    ram_addr_t ram_size = machine->ram_size;
+    const char *cpu_model = machine->cpu_model;
+    const char *kernel_filename = machine->kernel_filename;
+    OpenRISCCPU *cpu = NULL;
+    MemoryRegion *ram;
+    int n;
+
+    if (!cpu_model) {
+        cpu_model = "or1200";
+    }
+
+    for (n = 0; n < smp_cpus; n++) {
+        cpu = cpu_openrisc_init(cpu_model);
+        if (cpu == NULL) {
+            fprintf(stderr, "Unable to find CPU definition!\n");
+            exit(1);
+        }
+        qemu_register_reset(main_cpu_reset, cpu);
+        main_cpu_reset(cpu);
+    }
+
+    ram = g_malloc(sizeof(*ram));
+    memory_region_init_ram(ram, NULL, "openrisc.ram", ram_size, &error_abort);
+    vmstate_register_ram_global(ram);
+    memory_region_add_subregion(get_system_memory(), 0, ram);
+
+    cpu_openrisc_pic_init(cpu);
+    cpu_openrisc_clock_init(cpu);
+
+    serial_mm_init(get_system_memory(), mem_map[OR_UART0], 0, cpu->env.irq[2],
+                   115200, serial_hds[0], DEVICE_NATIVE_ENDIAN);
+
+    if (nd_table[0].used) {
+        openrisc_sim_net_init(get_system_memory(), mem_map[OR_OPENETH],
+                              mem_map[OR_OPENETH] + 0x400, cpu->env.irq[4],
+                              nd_table);
+    }
+
+    /* Platform ATA device */
+    openrisc_sim_ide_init(get_system_memory(), mem_map[OR_IDE],
+                     mem_map[OR_IDE] + 0x100, cpu->env.irq[15]);
+
+
+    cpu_openrisc_load_kernel(ram_size, kernel_filename, cpu);
+}
+
+static QEMUMachine openrisc_sim_machine = {
+    .name = "asim",
+    .desc = "or32 simulation",
+    .init = openrisc_sim_init,
+    .max_cpus = 1,
+};
+
+static void openrisc_sim_machine_init(void)
+{
+    qemu_register_machine(&openrisc_sim_machine);
+}
+
+machine_init(openrisc_sim_machine_init);
-- 
1.9.1