hw/xen_machine_pv.c

   1 /*
   2  * QEMU Xen PV Machine
   3  *
   4  * Copyright (c) 2007 Red Hat
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "hw.h"
  26 #include "pc.h"
  27 #include "boards.h"
  28 #include "xen_backend.h"
  29 #include "xen_domainbuild.h"
  30 #include "sysemu/blockdev.h"
  31
  32 static void xen_init_pv(QEMUMachineInitArgs *args)
  33 {
  34     const char *cpu_model = args->cpu_model;
  35     const char *kernel_filename = args->kernel_filename;
  36     const char *kernel_cmdline = args->kernel_cmdline;
  37     const char *initrd_filename = args->initrd_filename;
  38     X86CPU *cpu;
  39     CPUX86State *env;
  40     DriveInfo *dinfo;
  41     int i;
  42
  43     /* Initialize a dummy CPU */
  44     if (cpu_model == NULL) {
  45 #ifdef TARGET_X86_64
  46         cpu_model = "qemu64";
  47 #else
  48         cpu_model = "qemu32";
  49 #endif
  50     }
  51     cpu = cpu_x86_init(cpu_model);
  52     env = &cpu->env;
  53     env->halted = 1;
  54
  55     /* Initialize backend core & drivers */
  56     if (xen_be_init() != 0) {
  57         fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
  58         exit(1);
  59     }
  60
  61     switch (xen_mode) {
  62     case XEN_ATTACH:
  63         /* nothing to do, xend handles everything */
  64         break;
  65     case XEN_CREATE:
  66         if (xen_domain_build_pv(kernel_filename, initrd_filename,
  67                                 kernel_cmdline) < 0) {
  68             fprintf(stderr, "xen pv domain creation failed\n");
  69             exit(1);
  70         }
  71         break;
  72     case XEN_EMULATE:
  73         fprintf(stderr, "xen emulation not implemented (yet)\n");
  74         exit(1);
  75         break;
  76     }
  77
  78     xen_be_register("console", &xen_console_ops);
  79     xen_be_register("vkbd", &xen_kbdmouse_ops);
  80     xen_be_register("vfb", &xen_framebuffer_ops);
  81     xen_be_register("qdisk", &xen_blkdev_ops);
  82     xen_be_register("qnic", &xen_netdev_ops);
  83
  84     /* configure framebuffer */
  85     if (xenfb_enabled) {
  86         xen_config_dev_vfb(0, "vnc");
  87         xen_config_dev_vkbd(0);
  88     }
  89
  90     /* configure disks */
  91     for (i = 0; i < 16; i++) {
  92         dinfo = drive_get(IF_XEN, 0, i);
  93         if (!dinfo)
  94             continue;
  95         xen_config_dev_blk(dinfo);
  96     }
  97
  98     /* configure nics */
  99     for (i = 0; i < nb_nics; i++) {
 100         if (!nd_table[i].model || 0 != strcmp(nd_table[i].model, "xen"))
 101             continue;
 102         xen_config_dev_nic(nd_table + i);
 103     }
 104
 105     /* config cleanup hook */
 106     atexit(xen_config_cleanup);
 107
 108     /* setup framebuffer */
 109     xen_init_display(xen_domid);
 110 }
 111
 112 static QEMUMachine xenpv_machine = {
 113     .name = "xenpv",
 114     .desc = "Xen Para-virtualized PC",
 115     .init = xen_init_pv,
 116     .max_cpus = 1,
 117     .default_machine_opts = "accel=xen",
 118 };
 119
 120 static void xenpv_machine_init(void)
 121 {
 122     qemu_register_machine(&xenpv_machine);
 123 }
 124
 125 machine_init(xenpv_machine_init);