/* $NetBSD: machdep.c,v 1.33 2020/08/17 07:50:42 simonb Exp $ */ /* * Copyright (c) 2006 Urbana-Champaign Independent Media Center. * Copyright (c) 2006 Garrett D'Amore. * All rights reserved. * * Portions of this code were written by Garrett D'Amore for the * Champaign-Urbana Community Wireless Network Project. * * 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. All advertising materials mentioning features or use of this * software must display the following acknowledgements: * This product includes software developed by the Urbana-Champaign * Independent Media Center. * This product includes software developed by Garrett D'Amore. * 4. Urbana-Champaign Independent Media Center's name and Garrett * D'Amore's name may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT * MEDIA CENTER AND GARRETT D'AMORE ``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 URBANA-CHAMPAIGN INDEPENDENT * MEDIA CENTER OR GARRETT D'AMORE 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) 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 1.33 2020/08/17 07:50:42 simonb Exp $"); #include "opt_ddb.h" #include "opt_kgdb.h" #include "opt_modular.h" #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 /* 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]; void mach_init(void); /* XXX */ /* Currently the Atheros kernels only support big endian boards */ CTASSERT(_BYTE_ORDER == _BIG_ENDIAN); static void cal_timer(void) { uint32_t cntfreq; cntfreq = curcpu()->ci_cpu_freq = atheros_get_cpu_freq(); /* MIPS 4Kc CP0 counts every other clock */ if (mips_options.mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) cntfreq /= 2; curcpu()->ci_cctr_freq = cntfreq; curcpu()->ci_cycles_per_hz = (cntfreq + hz / 2) / hz; /* Compute number of cycles per 1us (1/MHz). 0.5MHz is for roundup. */ curcpu()->ci_divisor_delay = ((cntfreq + 500000) / 1000000); } void mach_init(void) { void *kernend; uint32_t memsize; extern char edata[], end[]; /* XXX */ /* clear the BSS segment */ kernend = (void *)mips_round_page(end); memset(edata, 0, (char *)kernend - edata); /* setup early console */ atheros_set_platformsw(); /* set CPU model info for sysctl_hw */ cpu_setmodel("Atheros %s", atheros_get_cpuname()); /* * 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); /* * Calibrate timers. */ cal_timer(); uvm_md_init(); /* * Look at arguments passed to us and compute boothowto. */ boothowto = RB_AUTOBOOT; #ifdef KADB boothowto |= RB_KDB; #endif /* * This would be a good place to parse a boot command line, if * we got one from the bootloader. Right now we have no way to * get one from e.g. vxworks. */ /* * Determine the memory size. * * Note: Reserve the first page! That's where the trap * vectors are located. */ memsize = atheros_get_memsize(); printf("Memory size: 0x%08x\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 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 busses. */ atheros_bus_init(); /* * Turn off (ignore) the hardware watchdog. If we got this * far, then we shouldn't need it anymore. */ atheros_wdog_reload(0); /* * Turn off watchpoint that may have been enabled by the * PROM. VxWorks bootloader seems to leave one set. */ __asm volatile ( "mtc0 $0, $%0\n\t" "nop\n\t" "nop\n\t" :: "n"(MIPS_COP_0_WATCH_LO)); /* * 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(). */ atheros_consinit(); } void cpu_startup(void) { cpu_startup_common(); } void cpu_reboot(int howto, char *bootstr) { static int waittime = -1; /* Take a snapshot before clobbering any registers. */ savectx(curpcb); /* 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 0 if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) if (board && board->ab_poweroff) board->ab_poweroff(); #endif /* * Firmware 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("resetting board...\n\n"); mips_icache_sync_all(); mips_dcache_wbinv_all(); atheros_reset(); __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); printf("Oops, back from reset\n\nSpinning..."); for (;;) /* spin forever */ ; /* XXX */ /*NOTREACHED*/ }