18280edafe
For para-virtualized guests running under KVM or other equivalent hypervisor. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: James Hogan <james.hogan@imgtec.com> Cc: kvm@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/7004/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
67 lines
1.3 KiB
C
67 lines
1.3 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2013 Cavium, Inc.
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*/
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#include <linux/kernel.h>
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#include <linux/kvm_para.h>
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#include <asm/reboot.h>
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#include <asm/bootinfo.h>
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#include <asm/smp-ops.h>
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#include <asm/time.h>
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extern struct plat_smp_ops paravirt_smp_ops;
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const char *get_system_type(void)
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{
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return "MIPS Para-Virtualized Guest";
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}
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void __init plat_time_init(void)
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{
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mips_hpt_frequency = kvm_hypercall0(KVM_HC_MIPS_GET_CLOCK_FREQ);
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preset_lpj = mips_hpt_frequency / (2 * HZ);
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}
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static void pv_machine_halt(void)
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{
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kvm_hypercall0(KVM_HC_MIPS_EXIT_VM);
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}
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/*
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* Early entry point for arch setup
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*/
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void __init prom_init(void)
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{
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int i;
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int argc = fw_arg0;
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char **argv = (char **)fw_arg1;
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#ifdef CONFIG_32BIT
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set_io_port_base(KSEG1ADDR(0x1e000000));
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#else /* CONFIG_64BIT */
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set_io_port_base(PHYS_TO_XKSEG_UNCACHED(0x1e000000));
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#endif
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for (i = 0; i < argc; i++) {
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strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
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if (i < argc - 1)
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strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
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}
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_machine_halt = pv_machine_halt;
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register_smp_ops(¶virt_smp_ops);
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}
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void __init plat_mem_setup(void)
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{
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/* Do nothing, the "mem=???" parser handles our memory. */
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}
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void __init prom_free_prom_memory(void)
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{
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}
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