linux/arch/mips/paravirt/setup.c
David Daney 18280edafe MIPS: Add code for new system 'paravirt'
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>
2014-06-02 12:34:20 +02:00

68 lines
1.3 KiB
C

/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2013 Cavium, Inc.
*/
#include <linux/kernel.h>
#include <linux/kvm_para.h>
#include <asm/reboot.h>
#include <asm/bootinfo.h>
#include <asm/smp-ops.h>
#include <asm/time.h>
extern struct plat_smp_ops paravirt_smp_ops;
const char *get_system_type(void)
{
return "MIPS Para-Virtualized Guest";
}
void __init plat_time_init(void)
{
mips_hpt_frequency = kvm_hypercall0(KVM_HC_MIPS_GET_CLOCK_FREQ);
preset_lpj = mips_hpt_frequency / (2 * HZ);
}
static void pv_machine_halt(void)
{
kvm_hypercall0(KVM_HC_MIPS_EXIT_VM);
}
/*
* Early entry point for arch setup
*/
void __init prom_init(void)
{
int i;
int argc = fw_arg0;
char **argv = (char **)fw_arg1;
#ifdef CONFIG_32BIT
set_io_port_base(KSEG1ADDR(0x1e000000));
#else /* CONFIG_64BIT */
set_io_port_base(PHYS_TO_XKSEG_UNCACHED(0x1e000000));
#endif
for (i = 0; i < argc; i++) {
strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
if (i < argc - 1)
strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
}
_machine_halt = pv_machine_halt;
register_smp_ops(&paravirt_smp_ops);
}
void __init plat_mem_setup(void)
{
/* Do nothing, the "mem=???" parser handles our memory. */
}
void __init prom_free_prom_memory(void)
{
}