1 /* $NetBSD: machdep.c,v 1.34 2021/11/16 05:16:47 msaitoh Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.34 2021/11/16 05:16:47 msaitoh Exp $"); 31 32 #include "opt_ddb.h" 33 #include "opt_kloader.h" 34 #include "opt_kloader_kernel_path.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/buf.h> 40 #include <sys/reboot.h> 41 #include <sys/mount.h> 42 #include <sys/kcore.h> 43 #include <sys/boot_flag.h> 44 #include <sys/device.h> 45 46 #include <uvm/uvm_extern.h> 47 48 #ifdef DDB 49 #include <machine/db_machdep.h> 50 #include <ddb/db_sym.h> 51 #include <ddb/db_extern.h> 52 #include <sys/exec_elf.h> 53 #endif 54 55 #include <dev/cons.h> /* cntab access (cpu_reboot) */ 56 #include <machine/bootinfo.h> 57 #include <machine/psl.h> 58 #include <machine/intr.h>/* hardintr_init */ 59 #include <playstation2/playstation2/sifbios.h> 60 #include <playstation2/playstation2/interrupt.h> 61 62 #if defined KLOADER_KERNEL_PATH && !defined KLOADER 63 #error "define KLOADER" 64 #endif 65 #ifdef KLOADER 66 #include <machine/kloader.h> 67 #endif 68 69 struct cpu_info cpu_info_store; 70 71 struct vm_map *phys_map; 72 phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 73 int mem_cluster_cnt; 74 75 #ifdef DEBUG 76 static void bootinfo_dump(void); 77 #endif 78 79 void mach_init(void); 80 /* 81 * Do all the stuff that locore normally does before calling main(). 82 */ 83 void 84 mach_init(void) 85 { 86 extern char kernel_text[], edata[], end[]; 87 void *kernend; 88 struct pcb *pcb0; 89 vaddr_t v; 90 paddr_t start; 91 size_t size; 92 93 /* 94 * Clear the BSS segment. 95 */ 96 kernend = (void *)mips_round_page(end); 97 memset(edata, 0, kernend - edata); 98 99 /* disable all interrupt */ 100 interrupt_init_bootstrap(); 101 102 /* enable SIF BIOS */ 103 sifbios_init(); 104 105 consinit(); 106 107 printf("kernel_text=%p edata=%p end=%p\n", kernel_text, edata, end); 108 109 #ifdef DEBUG 110 bootinfo_dump(); 111 #endif 112 uvm_md_init(); 113 114 physmem = atop(PS2_MEMORY_SIZE); 115 116 /* 117 * Copy exception-dispatch code down to exception vector. 118 * Initialize locore-function vector. 119 * Clear out the I and D caches. 120 */ 121 mips_vector_init(); 122 123 /* 124 * Load the rest of the available pages into the VM system. 125 */ 126 start = (paddr_t)round_page(MIPS_KSEG0_TO_PHYS(kernend)); 127 size = PS2_MEMORY_SIZE - start - BOOTINFO_BLOCK_SIZE; 128 memset((void *)MIPS_PHYS_TO_KSEG1(start), 0, size); 129 130 /* kernel itself */ 131 mem_clusters[0].start = trunc_page(MIPS_KSEG0_TO_PHYS(kernel_text)); 132 mem_clusters[0].size = start - mem_clusters[0].start; 133 /* heap */ 134 mem_clusters[1].start = start; 135 mem_clusters[1].size = size; 136 /* load */ 137 printf("load memory %#lx, %#x\n", start, size); 138 uvm_page_physload(atop(start), atop(start + size), 139 atop(start), atop(start + size), VM_FREELIST_DEFAULT); 140 141 strcpy(cpu_model, "SONY PlayStation 2"); 142 143 /* 144 * Initialize error message buffer (at end of core). 145 */ 146 mips_init_msgbuf(); 147 148 pmap_bootstrap(); 149 150 /* 151 * Allocate uarea page for lwp0 and set it. 152 */ 153 v = uvm_pageboot_alloc(USPACE); 154 155 pcb0 = lwp_getpcb(&lwp0); 156 pcb0->pcb_context[11] = PSL_LOWIPL; /* SR */ 157 #ifdef IPL_ICU_MASK 158 pcb0->pcb_ppl = 0; 159 #endif 160 161 lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1 162 } 163 164 /* 165 * Allocate memory for variable-sized tables, 166 */ 167 void 168 cpu_startup(void) 169 { 170 cpu_startup_common(); 171 } 172 173 void 174 cpu_reboot(int howto, char *bootstr) 175 { 176 #ifdef KLOADER 177 struct kloader_bootinfo kbi; 178 #endif 179 static int waittime = -1; 180 181 /* Take a snapshot before clobbering any registers. */ 182 if (curlwp) 183 savectx(curpcb); 184 185 if (cold) { 186 howto |= RB_HALT; 187 goto haltsys; 188 } 189 190 /* If "always halt" was specified as a boot flag, obey. */ 191 if (boothowto & RB_HALT) { 192 howto |= RB_HALT; 193 } 194 195 #ifdef KLOADER 196 /* No bootinfo is required. */ 197 kloader_bootinfo_set(&kbi, 0, NULL, NULL, true); 198 #ifndef KLOADER_KERNEL_PATH 199 #define KLOADER_KERNEL_PATH "/netbsd" 200 #endif 201 if ((howto & RB_HALT) == 0) 202 kloader_reboot_setup(KLOADER_KERNEL_PATH); 203 #endif 204 205 boothowto = howto; 206 if ((howto & RB_NOSYNC) == 0 && (waittime < 0)) { 207 waittime = 0; 208 vfs_shutdown(); 209 210 /* 211 * If we've been adjusting the clock, the todr 212 * will be out of synch; adjust it now. 213 */ 214 resettodr(); 215 } 216 217 splhigh(); 218 219 if (howto & RB_DUMP) 220 dumpsys(); 221 222 haltsys: 223 doshutdownhooks(); 224 225 pmf_system_shutdown(boothowto); 226 227 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) 228 sifbios_halt(0); /* power down */ 229 else if (howto & RB_HALT) 230 sifbios_halt(1); /* halt */ 231 else { 232 #ifdef KLOADER 233 kloader_reboot(); 234 /* NOTREACHED */ 235 #endif 236 sifbios_halt(2); /* reset */ 237 } 238 239 while (1) 240 ; 241 /* NOTREACHED */ 242 } 243 244 #ifdef DEBUG 245 void 246 bootinfo_dump(void) 247 { 248 printf("devconf=%#x, option=%#x, rtc=%#x, pcmcia_type=%#x," 249 "sysconf=%#x\n", 250 BOOTINFO_REF(BOOTINFO_DEVCONF), 251 BOOTINFO_REF(BOOTINFO_OPTION_PTR), 252 BOOTINFO_REF(BOOTINFO_RTC), 253 BOOTINFO_REF(BOOTINFO_PCMCIA_TYPE), 254 BOOTINFO_REF(BOOTINFO_SYSCONF)); 255 } 256 #endif /* DEBUG */ 257