hw/ppc/e500plat.c

   1 /*
   2  * Generic device-tree-driven paravirt PPC e500 platform
   3  *
   4  * Copyright 2012 Freescale Semiconductor, Inc.
   5  *
   6  * This is free software; you can redistribute it and/or modify
   7  * it under the terms of  the GNU General  Public License as published by
   8  * the Free Software Foundation;  either version 2 of the  License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include "config.h"
  13 #include "qemu-common.h"
  14 #include "e500.h"
  15 #include "hw/boards.h"
  16 #include "sysemu/device_tree.h"
  17 #include "hw/pci/pci.h"
  18 #include "hw/ppc/openpic.h"
  19 #include "kvm_ppc.h"
  20
  21 static void e500plat_fixup_devtree(PPCE500Params *params, void *fdt)
  22 {
  23     const char model[] = "QEMU ppce500";
  24     const char compatible[] = "fsl,qemu-e500";
  25
  26     qemu_devtree_setprop(fdt, "/", "model", model, sizeof(model));
  27     qemu_devtree_setprop(fdt, "/", "compatible", compatible,
  28                          sizeof(compatible));
  29 }
  30
  31 static void e500plat_init(QEMUMachineInitArgs *args)
  32 {
  33     ram_addr_t ram_size = args->ram_size;
  34     const char *boot_device = args->boot_device;
  35     const char *cpu_model = args->cpu_model;
  36     const char *kernel_filename = args->kernel_filename;
  37     const char *kernel_cmdline = args->kernel_cmdline;
  38     const char *initrd_filename = args->initrd_filename;
  39     PPCE500Params params = {
  40         .ram_size = ram_size,
  41         .boot_device = boot_device,
  42         .kernel_filename = kernel_filename,
  43         .kernel_cmdline = kernel_cmdline,
  44         .initrd_filename = initrd_filename,
  45         .cpu_model = cpu_model,
  46         .pci_first_slot = 0x1,
  47         .pci_nr_slots = PCI_SLOT_MAX - 1,
  48         .fixup_devtree = e500plat_fixup_devtree,
  49         .mpic_version = OPENPIC_MODEL_FSL_MPIC_42,
  50     };
  51
  52     /* Older KVM versions don't support EPR which breaks guests when we announce
  53        MPIC variants that support EPR. Revert to an older one for those */
  54     if (kvm_enabled() && !kvmppc_has_cap_epr()) {
  55         params.mpic_version = OPENPIC_MODEL_FSL_MPIC_20;
  56     }
  57
  58     ppce500_init(&params);
  59 }
  60
  61 static QEMUMachine e500plat_machine = {
  62     .name = "ppce500",
  63     .desc = "generic paravirt e500 platform",
  64     .init = e500plat_init,
  65     .max_cpus = 32,
  66     DEFAULT_MACHINE_OPTIONS,
  67 };
  68
  69 static void e500plat_machine_init(void)
  70 {
  71     qemu_register_machine(&e500plat_machine);
  72 }
  73
  74 machine_init(e500plat_machine_init);