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 "blockdev.h"
  31
  32 static void xen_init_pv(ram_addr_t ram_size,
  33                         const char *boot_device,
  34                         const char *kernel_filename,
  35                         const char *kernel_cmdline,
  36                         const char *initrd_filename,
  37                         const char *cpu_model)
  38 {
  39     X86CPU *cpu;
  40     CPUX86State *env;
  41     DriveInfo *dinfo;
  42     int i;
  43
  44     /* Initialize a dummy CPU */
  45     if (cpu_model == NULL) {
  46 #ifdef TARGET_X86_64
  47         cpu_model = "qemu64";
  48 #else
  49         cpu_model = "qemu32";
  50 #endif
  51     }
  52     cpu = cpu_x86_init(cpu_model);
  53     env = &cpu->env;
  54     env->halted = 1;
  55
  56     /* Initialize backend core & drivers */
  57     if (xen_be_init() != 0) {
  58         fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
  59         exit(1);
  60     }
  61
  62     switch (xen_mode) {
  63     case XEN_ATTACH:
  64         /* nothing to do, xend handles everything */
  65         break;
  66     case XEN_CREATE:
  67         if (xen_domain_build_pv(kernel_filename, initrd_filename,
  68                                 kernel_cmdline) < 0) {
  69             fprintf(stderr, "xen pv domain creation failed\n");
  70             exit(1);
  71         }
  72         break;
  73     case XEN_EMULATE:
  74         fprintf(stderr, "xen emulation not implemented (yet)\n");
  75         exit(1);
  76         break;
  77     }
  78
  79     xen_be_register("console", &xen_console_ops);
  80     xen_be_register("vkbd", &xen_kbdmouse_ops);
  81     xen_be_register("vfb", &xen_framebuffer_ops);
  82     xen_be_register("qdisk", &xen_blkdev_ops);
  83     xen_be_register("qnic", &xen_netdev_ops);
  84
  85     /* configure framebuffer */
  86     if (xenfb_enabled) {
  87         xen_config_dev_vfb(0, "vnc");
  88         xen_config_dev_vkbd(0);
  89     }
  90
  91     /* configure disks */
  92     for (i = 0; i < 16; i++) {
  93         dinfo = drive_get(IF_XEN, 0, i);
  94         if (!dinfo)
  95             continue;
  96         xen_config_dev_blk(dinfo);
  97     }
  98
  99     /* configure nics */
 100     for (i = 0; i < nb_nics; i++) {
 101         if (!nd_table[i].model || 0 != strcmp(nd_table[i].model, "xen"))
 102             continue;
 103         xen_config_dev_nic(nd_table + i);
 104     }
 105
 106     /* config cleanup hook */
 107     atexit(xen_config_cleanup);
 108
 109     /* setup framebuffer */
 110     xen_init_display(xen_domid);
 111 }
 112
 113 static QEMUMachine xenpv_machine = {
 114     .name = "xenpv",
 115     .desc = "Xen Para-virtualized PC",
 116     .init = xen_init_pv,
 117     .max_cpus = 1,
 118     .default_machine_opts = "accel=xen",
 119 };
 120
 121 static void xenpv_machine_init(void)
 122 {
 123     qemu_register_machine(&xenpv_machine);
 124 }
 125
 126 machine_init(xenpv_machine_init);