LXR linux/arch/mips/paravirt/setup.c

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 2013 Cavium, Inc.
   7 */
   8
   9#include <linux/kernel.h>
  10#include <linux/kvm_para.h>
  11
  12#include <asm/reboot.h>
  13#include <asm/bootinfo.h>
  14#include <asm/smp-ops.h>
  15#include <asm/time.h>
  16
  17extern const struct plat_smp_ops paravirt_smp_ops;
  18
  19const char *get_system_type(void)
  20{
  21        return "MIPS Para-Virtualized Guest";
  22}
  23
  24void __init plat_time_init(void)
  25{
  26        mips_hpt_frequency = kvm_hypercall0(KVM_HC_MIPS_GET_CLOCK_FREQ);
  27
  28        preset_lpj = mips_hpt_frequency / (2 * HZ);
  29}
  30
  31static void pv_machine_halt(void)
  32{
  33        kvm_hypercall0(KVM_HC_MIPS_EXIT_VM);
  34}
  35
  36/*
  37 * Early entry point for arch setup
  38 */
  39void __init prom_init(void)
  40{
  41        int i;
  42        int argc = fw_arg0;
  43        char **argv = (char **)fw_arg1;
  44
  45#ifdef CONFIG_32BIT
  46        set_io_port_base(KSEG1ADDR(0x1e000000));
  47#else /* CONFIG_64BIT */
  48        set_io_port_base(PHYS_TO_XKSEG_UNCACHED(0x1e000000));
  49#endif
  50
  51        for (i = 0; i < argc; i++) {
  52                strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
  53                if (i < argc - 1)
  54                        strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
  55        }
  56        _machine_halt = pv_machine_halt;
  57        register_smp_ops(&paravirt_smp_ops);
  58}
  59
  60void __init plat_mem_setup(void)
  61{
  62        /* Do nothing, the "mem=???" parser handles our memory. */
  63}
  64
  65void __init prom_free_prom_memory(void)
  66{
  67}
  68