1/* 2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights 3 * reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the NetLogic 9 * license below: 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in 19 * the documentation and/or other materials provided with the 20 * distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35#include <linux/kernel.h> 36#include <linux/serial_8250.h> 37#include <linux/memblock.h> 38#include <linux/pm.h> 39 40#include <asm/idle.h> 41#include <asm/reboot.h> 42#include <asm/time.h> 43#include <asm/bootinfo.h> 44 45#include <asm/netlogic/interrupt.h> 46#include <asm/netlogic/psb-bootinfo.h> 47#include <asm/netlogic/haldefs.h> 48#include <asm/netlogic/common.h> 49 50#include <asm/netlogic/xlr/xlr.h> 51#include <asm/netlogic/xlr/iomap.h> 52#include <asm/netlogic/xlr/pic.h> 53#include <asm/netlogic/xlr/gpio.h> 54#include <asm/netlogic/xlr/fmn.h> 55 56uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE; 57struct psb_info nlm_prom_info; 58 59/* default to uniprocessor */ 60unsigned int nlm_threads_per_core = 1; 61struct nlm_soc_info nlm_nodes[NLM_NR_NODES]; 62cpumask_t nlm_cpumask = CPU_MASK_CPU0; 63 64static void nlm_linux_exit(void) 65{ 66 uint64_t gpiobase; 67 68 gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET); 69 /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */ 70 nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1); 71 for ( ; ; ) 72 cpu_wait(); 73} 74 75void __init plat_mem_setup(void) 76{ 77 _machine_restart = (void (*)(char *))nlm_linux_exit; 78 _machine_halt = nlm_linux_exit; 79 pm_power_off = nlm_linux_exit; 80} 81 82const char *get_system_type(void) 83{ 84 return "Netlogic XLR/XLS Series"; 85} 86 87unsigned int nlm_get_cpu_frequency(void) 88{ 89 return (unsigned int)nlm_prom_info.cpu_frequency; 90} 91 92void __init prom_free_prom_memory(void) 93{ 94 /* Nothing yet */ 95} 96 97void nlm_percpu_init(int hwcpuid) 98{ 99 if (hwcpuid % 4 == 0) 100 xlr_percpu_fmn_init(); 101} 102 103static void __init build_arcs_cmdline(int *argv) 104{ 105 int i, remain, len; 106 char *arg; 107 108 remain = sizeof(arcs_cmdline) - 1; 109 arcs_cmdline[0] = '\0'; 110 for (i = 0; argv[i] != 0; i++) { 111 arg = (char *)(long)argv[i]; 112 len = strlen(arg); 113 if (len + 1 > remain) 114 break; 115 strcat(arcs_cmdline, arg); 116 strcat(arcs_cmdline, " "); 117 remain -= len + 1; 118 } 119 120 /* Add the default options here */ 121 if ((strstr(arcs_cmdline, "console=")) == NULL) { 122 arg = "console=ttyS0,38400 "; 123 len = strlen(arg); 124 if (len > remain) 125 goto fail; 126 strcat(arcs_cmdline, arg); 127 remain -= len; 128 } 129#ifdef CONFIG_BLK_DEV_INITRD 130 if ((strstr(arcs_cmdline, "rdinit=")) == NULL) { 131 arg = "rdinit=/sbin/init "; 132 len = strlen(arg); 133 if (len > remain) 134 goto fail; 135 strcat(arcs_cmdline, arg); 136 remain -= len; 137 } 138#endif 139 return; 140fail: 141 panic("Cannot add %s, command line too big!", arg); 142} 143 144static void prom_add_memory(void) 145{ 146 struct nlm_boot_mem_map *bootm; 147 u64 start, size; 148 u64 pref_backup = 512; /* avoid pref walking beyond end */ 149 int i; 150 151 bootm = (void *)(long)nlm_prom_info.psb_mem_map; 152 for (i = 0; i < bootm->nr_map; i++) { 153 if (bootm->map[i].type != NLM_BOOT_MEM_RAM) 154 continue; 155 start = bootm->map[i].addr; 156 size = bootm->map[i].size; 157 158 /* Work around for using bootloader mem */ 159 if (i == 0 && start == 0 && size == 0x0c000000) 160 size = 0x0ff00000; 161 162 memblock_add(start, size - pref_backup); 163 } 164} 165 166static void nlm_init_node(void) 167{ 168 struct nlm_soc_info *nodep; 169 170 nodep = nlm_current_node(); 171 nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET); 172 nodep->ebase = read_c0_ebase() & MIPS_EBASE_BASE; 173 spin_lock_init(&nodep->piclock); 174} 175 176void __init prom_init(void) 177{ 178 int *argv, *envp; /* passed as 32 bit ptrs */ 179 struct psb_info *prom_infop; 180 void *reset_vec; 181#ifdef CONFIG_SMP 182 int i; 183#endif 184 185 /* truncate to 32 bit and sign extend all args */ 186 argv = (int *)(long)(int)fw_arg1; 187 envp = (int *)(long)(int)fw_arg2; 188 prom_infop = (struct psb_info *)(long)(int)fw_arg3; 189 190 nlm_prom_info = *prom_infop; 191 nlm_init_node(); 192 193 /* Update reset entry point with CPU init code */ 194 reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS); 195 memset(reset_vec, 0, RESET_VEC_SIZE); 196 memcpy(reset_vec, (void *)nlm_reset_entry, 197 (nlm_reset_entry_end - nlm_reset_entry)); 198 199 build_arcs_cmdline(argv); 200 prom_add_memory(); 201 202#ifdef CONFIG_SMP 203 for (i = 0; i < 32; i++) 204 if (nlm_prom_info.online_cpu_map & (1 << i)) 205 cpumask_set_cpu(i, &nlm_cpumask); 206 nlm_wakeup_secondary_cpus(); 207 register_smp_ops(&nlm_smp_ops); 208#endif 209 xlr_board_info_setup(); 210 xlr_percpu_fmn_init(); 211} 212