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 "sysemu.h"
  28 #include "boards.h"
  29 #include "xen_backend.h"
  30 #include "xen_domainbuild.h"
  31
  32 uint32_t xen_domid;
  33 enum xen_mode xen_mode = XEN_EMULATE;
  34
  35 static void xen_init_pv(ram_addr_t ram_size,
  36                         const char *boot_device,
  37                         const char *kernel_filename,
  38                         const char *kernel_cmdline,
  39                         const char *initrd_filename,
  40                         const char *cpu_model)
  41 {
  42     CPUState *env;
  43     DriveInfo *dinfo;
  44     int i;
  45     static Notifier exit_notifier = { .notify = xen_config_cleanup };
  46
  47     /* Initialize a dummy CPU */
  48     if (cpu_model == NULL) {
  49 #ifdef TARGET_X86_64
  50         cpu_model = "qemu64";
  51 #else
  52         cpu_model = "qemu32";
  53 #endif
  54     }
  55     env = cpu_init(cpu_model);
  56     env->halted = 1;
  57
  58     /* Initialize backend core & drivers */
  59     if (xen_be_init() != 0) {
  60         fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
  61         exit(1);
  62     }
  63
  64     switch (xen_mode) {
  65     case XEN_ATTACH:
  66         /* nothing to do, xend handles everything */
  67         break;
  68     case XEN_CREATE:
  69         if (xen_domain_build_pv(kernel_filename, initrd_filename,
  70                                 kernel_cmdline) < 0) {
  71             fprintf(stderr, "xen pv domain creation failed\n");
  72             exit(1);
  73         }
  74         break;
  75     case XEN_EMULATE:
  76         fprintf(stderr, "xen emulation not implemented (yet)\n");
  77         exit(1);
  78         break;
  79     }
  80
  81     xen_be_register("console", &xen_console_ops);
  82     xen_be_register("vkbd", &xen_kbdmouse_ops);
  83     xen_be_register("vfb", &xen_framebuffer_ops);
  84     xen_be_register("qdisk", &xen_blkdev_ops);
  85     xen_be_register("qnic", &xen_netdev_ops);
  86
  87     /* configure framebuffer */
  88     if (xenfb_enabled) {
  89         xen_config_dev_vfb(0, "vnc");
  90         xen_config_dev_vkbd(0);
  91     }
  92
  93     /* configure disks */
  94     for (i = 0; i < 16; i++) {
  95         dinfo = drive_get(IF_XEN, 0, i);
  96         if (!dinfo)
  97             continue;
  98         xen_config_dev_blk(dinfo);
  99     }
 100
 101     /* configure nics */
 102     for (i = 0; i < nb_nics; i++) {
 103         if (!nd_table[i].model || 0 != strcmp(nd_table[i].model, "xen"))
 104             continue;
 105         xen_config_dev_nic(nd_table + i);
 106     }
 107
 108     /* config cleanup hook */
 109     exit_notifier_addr(&exit_notifier);
 110
 111     /* setup framebuffer */
 112     xen_init_display(xen_domid);
 113 }
 114
 115 static QEMUMachine xenpv_machine = {
 116     .name = "xenpv",
 117     .desc = "Xen Para-virtualized PC",
 118     .init = xen_init_pv,
 119     .max_cpus = 1,
 120 };
 121
 122 static void xenpv_machine_init(void)
 123 {
 124     qemu_register_machine(&xenpv_machine);
 125 }
 126
 127 machine_init(xenpv_machine_init);