/* $NetBSD: machdep.c,v 1.56 2016/12/22 14:47:56 cherry Exp $ */ /*- * Copyright (c) 2006 Itronix Inc. * All rights reserved. * * Portions written by Garrett D'Amore for Itronix Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of Itronix Inc. may not be used to endorse * or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department, The Mach Operating System project at * Carnegie-Mellon University and Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)machdep.c 8.3 (Berkeley) 1/12/94 * from: Utah Hdr: machdep.c 1.63 91/04/24 */ #include __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.56 2016/12/22 14:47:56 cherry Exp $"); #include "opt_ddb.h" #include "opt_kgdb.h" #include "opt_memsize.h" #include "opt_modular.h" #include "opt_ethaddr.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ksyms.h" #if NKSYMS || defined(DDB) || defined(MODULAR) #include #include #endif #include #include #include #include #include #include #include #include #include #include #include "com.h" #if NCOM > 0 int aucomcnrate = 0; #endif /* NAUCOM > 0 */ #include "ohci.h" /* Maps for VM objects. */ struct vm_map *phys_map = NULL; int maxmem; /* max memory per process */ int mem_cluster_cnt; phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; yamon_env_var *yamon_envp; struct mips_bus_space alchemy_cpuregt; void mach_init(int, char **, yamon_env_var *, u_long); /* XXX */ void mach_init(int argc, char **argv, yamon_env_var *envp, u_long memsize) { bus_space_handle_t sh; void *kernend; const char *cp; int freqok, howto, i; const struct alchemy_board *board; extern char edata[], end[]; /* XXX */ board = board_info(); KASSERT(board != NULL); /* clear the BSS segment */ kernend = (void *)mips_round_page(end); memset(edata, 0, (char *)kernend - edata); /* set CPU model info for sysctl_hw */ cpu_setmodel("%s", board->ab_name); /* save the yamon environment pointer */ yamon_envp = envp; /* Use YAMON callbacks for early console I/O */ cn_tab = &yamon_promcd; /* * Set up the exception vectors and CPU-specific function * vectors early on. We need the wbflush() vector set up * before comcnattach() is called (or at least before the * first printf() after that is called). * Sets up mips_cpu_flags that may be queried by other * functions called during startup. * Also clears the I+D caches. */ mips_vector_init(NULL, false); uvm_md_init(); /* * Use YAMON's CPU frequency if available. */ freqok = yamon_setcpufreq(1); /* * Initialize bus space tags. */ au_cpureg_bus_mem_init(&alchemy_cpuregt, &alchemy_cpuregt); aubus_st = &alchemy_cpuregt; /* * Calibrate the timer if YAMON failed to tell us. */ if (!freqok) { bus_space_map(aubus_st, PC_BASE, PC_SIZE, 0, &sh); au_cal_timers(aubus_st, sh); bus_space_unmap(aubus_st, sh, PC_SIZE); } /* * Perform board-specific initialization. */ board->ab_init(); /* * Bring up the console. */ #if NCOM > 0 #ifdef CONSPEED if (aucomcnrate == 0) aucomcnrate = CONSPEED; #else /* !CONSPEED */ /* * Learn default console speed. We use the YAMON environment, * though we could probably also figure it out by checking the * aucom registers directly. */ if ((aucomcnrate == 0) && ((cp = yamon_getenv("modetty0")) != NULL)) aucomcnrate = strtoul(cp, NULL, 0); if (aucomcnrate == 0) { printf("FATAL: `modetty0' YAMON variable not set. Set it\n"); printf(" to the speed of the console and try again.\n"); printf(" Or, build a kernel with the `CONSPEED' " "option.\n"); panic("mach_init"); } #endif /* CONSPEED */ /* * Delay to allow firmware putchars to complete. * FIFO depth * character time. * character time = (1000000 / (defaultrate / 10)) */ delay(160000000 / aucomcnrate); if (com_aubus_cnattach(UART0_BASE, aucomcnrate) != 0) panic("mach_init: unable to initialize serial console"); #else /* NCOM > 0 */ panic("mach_init: not configured to use serial console"); #endif /* NAUCOM > 0 */ /* * Look at arguments passed to us and compute boothowto. */ boothowto = RB_AUTOBOOT; #ifdef KADB boothowto |= RB_KDB; #endif for (i = 1; i < argc; i++) { for (cp = argv[i]; *cp; cp++) { /* Ignore superfluous '-', if there is one */ if (*cp == '-') continue; howto = 0; BOOT_FLAG(*cp, howto); if (! howto) printf("bootflag '%c' not recognised\n", *cp); else boothowto |= howto; } } /* * Determine the memory size. Use the `memsize' PMON * variable. If that's not available, panic. * * Note: Reserve the first page! That's where the trap * vectors are located. */ #if defined(MEMSIZE) memsize = MEMSIZE; #else if (memsize == 0) { if ((cp = yamon_getenv("memsize")) != NULL) memsize = strtoul(cp, NULL, 0); else { printf("FATAL: `memsize' YAMON variable not set. Set it to\n"); printf(" the amount of memory (in MB) and try again.\n"); printf(" Or, build a kernel with the `MEMSIZE' " "option.\n"); panic("mach_init"); } } #endif /* MEMSIZE */ printf("Memory size: 0x%08lx\n", memsize); physmem = btoc(memsize); mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; mem_clusters[mem_cluster_cnt].size = memsize - mem_clusters[mem_cluster_cnt].start; mem_cluster_cnt++; /* * Load the rest of the available pages into the VM system. */ mips_page_physload(MIPS_KSEG0_START, (vaddr_t)kernend, mem_clusters, mem_cluster_cnt, NULL, 0); /* * Initialize message buffer (at end of core). */ mips_init_msgbuf(); /* * Initialize the virtual memory system. */ pmap_bootstrap(); /* * Allocate uarea page for lwp0 and set it. */ mips_init_lwp0_uarea(); /* * Initialize debuggers, and break into them, if appropriate. */ #ifdef DDB if (boothowto & RB_KDB) Debugger(); #endif } void consinit(void) { /* * Everything related to console initialization is done * in mach_init(). */ } void cpu_startup(void) { cpu_startup_common(); } void cpu_reboot(int howto, char *bootstr) { static int waittime = -1; const struct alchemy_board *board; /* Take a snapshot before clobbering any registers. */ savectx(curpcb); board = board_info(); KASSERT(board != NULL); /* If "always halt" was specified as a boot flag, obey. */ if (boothowto & RB_HALT) howto |= RB_HALT; boothowto = howto; /* If system is cold, just halt. */ if (cold) { boothowto |= RB_HALT; goto haltsys; } if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { waittime = 0; /* * Synchronize the disks.... */ vfs_shutdown(); /* * If we've been adjusting the clock, the todr * will be out of synch; adjust it now. */ resettodr(); } /* Disable interrupts. */ splhigh(); if (boothowto & RB_DUMP) dumpsys(); haltsys: /* Run any shutdown hooks. */ doshutdownhooks(); pmf_system_shutdown(boothowto); if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) if (board && board->ab_poweroff) board->ab_poweroff(); /* * YAMON may autoboot (depending on settings), and we cannot pass * flags to it (at least I haven't figured out how to yet), so * we "pseudo-halt" now. */ if (boothowto & RB_HALT) { printf("\n"); printf("The operating system has halted.\n"); printf("Please press any key to reboot.\n\n"); cnpollc(1); /* For proper keyboard command handling */ cngetc(); cnpollc(0); } printf("reseting board...\n\n"); /* * Try to use board-specific reset logic, which might involve a better * hardware reset. */ if (board->ab_reboot) board->ab_reboot(); #if 1 /* XXX * For some reason we are leaving the ethernet MAC in a state where * YAMON isn't happy with it. So just call the reset vector (grr, * Alchemy YAMON doesn't have a "reset" command). */ mips_icache_sync_all(); mips_dcache_wbinv_all(); __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); #else printf("%s\n\n", ((howto & RB_HALT) != 0) ? "halted." : "rebooting..."); yamon_exit(boothowto); printf("Oops, back from yamon_exit()\n\nSpinning..."); #endif for (;;) /* spin forever */ ; /* XXX */ /*NOTREACHED*/ } /* * Export our interrupt map function so aupci can find it. */ int aupci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { const struct alchemy_board *board; board = board_info(); if (board->ab_pci_intr_map != NULL) return (board->ab_pci_intr_map(pa, ihp)); return 1; } struct aupcmcia_machdep * aupcmcia_machdep(void) { const struct alchemy_board *board; board = board_info(); return (board->ab_pcmcia); } const struct auspi_machdep * auspi_machdep(bus_addr_t ba) { const struct alchemy_board *board; board = board_info(); if (board->ab_spi != NULL) return (board->ab_spi(ba)); return NULL; }