/* $NetBSD: machdep.c,v 1.31 2023/12/20 14:18:37 thorpej Exp $ */ /* * Copyright (c) 2006 Jachym Holecek * All rights reserved. * * Written for DFC Design, s.r.o. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /* * Based on Walnut and Explora. */ #include __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.31 2023/12/20 14:18:37 thorpej Exp $"); #include "opt_compat_netbsd.h" #include "opt_ddb.h" #include "opt_virtex.h" #include "opt_kgdb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ksyms.h" #if defined(DDB) #include #include #endif #if defined(KGDB) #include #endif void initppc(vaddr_t, vaddr_t); /* BSS segment start & end. */ extern char edata[], end[]; /* One region holds all memory, the other is terminator expected by 405 pmap. */ #define MEMREGIONS 2 struct mem_region physmemr[MEMREGIONS]; struct mem_region availmemr[MEMREGIONS]; /* Maximum TLB page size. */ #define TLB_PG_SIZE (16*1024*1024) void initppc(vaddr_t startkernel, vaddr_t endkernel) { paddr_t addr, memsize; /* Initialize cache info for memcpy, memset, etc. */ cpu_probe_cache(); memset(physmemr, 0, sizeof(physmemr)); /* [1].size = 0 */ memset(availmemr, 0, sizeof(availmemr)); /* [1].size = 0 */ memsize = (PHYSMEM * 1024 * 1024) & ~PGOFSET; physmemr[0].start = 0; physmemr[0].size = memsize; availmemr[0].start = startkernel; availmemr[0].size = memsize - availmemr[0].start; /* Map kernel memory linearly. */ for (addr = 0; addr < endkernel; addr += TLB_PG_SIZE) ppc4xx_tlb_reserve(addr, addr, TLB_PG_SIZE, TLB_EX); /* Give design-specific code a hint for reserved mappings. */ virtex_machdep_init(roundup(memsize, TLB_PG_SIZE), TLB_PG_SIZE, physmemr, availmemr); ibm4xx_init(startkernel, endkernel, pic_ext_intr); #ifdef DDB if (boothowto & RB_KDB) Debugger(); #endif #ifdef KGDB /* * Now trap to KGDB */ kgdb_connect(1); #endif /* KGDB */ } /* * Machine dependent startup code. */ void cpu_startup(void) { /* For use by propdb. */ static u_int memsize = PHYSMEM * 1024 * 1024; static u_int cpuspeed = CPUFREQ * 1000 * 1000; prop_number_t pn; vaddr_t minaddr, maxaddr; char pbuf[9]; curcpu()->ci_khz = cpuspeed / 1000; /* Initialize error message buffer. */ initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE)); printf("%s%s", copyright, version); format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); printf("total memory = %s\n", pbuf); minaddr = 0; /* * Allocate a submap for physio */ phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, VM_PHYS_SIZE, 0, false, NULL); /* * No need to allocate an mbuf cluster submap. Mbuf clusters * are allocated via the pool allocator, and we use direct-mapped * pool pages. */ format_bytes(pbuf, sizeof(pbuf), ptoa(uvm_availmem(false))); printf("avail memory = %s\n", pbuf); /* * Set up the board properties database. */ board_info_init(); pn = prop_number_create_integer(memsize); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "mem-size", pn) == false) panic("setting mem-size"); prop_object_release(pn); pn = prop_number_create_integer(cpuspeed); KASSERT(pn != NULL); if (prop_dictionary_set(board_properties, "processor-frequency", pn) == false) panic("setting processor-frequency"); prop_object_release(pn); /* * Now that we have VM, malloc()s are OK in bus_space. */ bus_space_mallocok(); fake_mapiodev = 0; } /* Hook used by 405 pmap module. */ void mem_regions(struct mem_region **mem, struct mem_region **avail) { *mem = physmemr; *avail = availmemr; }