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 17 extern const struct plat_smp_ops paravirt_smp_ops; 18 get_system_type(void)19const char *get_system_type(void) 20 { 21 return "MIPS Para-Virtualized Guest"; 22 } 23 plat_time_init(void)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 pv_machine_halt(void)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 */ prom_init(void)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(¶virt_smp_ops); 58 } 59 plat_mem_setup(void)60void __init plat_mem_setup(void) 61 { 62 /* Do nothing, the "mem=???" parser handles our memory. */ 63 } 64 prom_free_prom_memory(void)65void __init prom_free_prom_memory(void) 66 { 67 } 68