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