/* * Copyright (C) 1996 Wolfgang Solfrank. * Copyright (C) 1996 TooLs GmbH. * All rights reserved. * * 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 acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. * * $NetBSD: ofw_machdep.c,v 1.5 2000/05/23 13:25:43 tsubai Exp $ */ #ifndef lint static const char rcsid[] = "$FreeBSD$"; #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define OFMEM_REGIONS 32 static struct mem_region OFmem[OFMEM_REGIONS + 1], OFavail[OFMEM_REGIONS + 3]; extern long ofmsr; extern struct pmap ofw_pmap; extern int pmap_bootstrapped; static int (*ofwcall)(void *); /* * This is called during powerpc_init, before the system is really initialized. * It shall provide the total and the available regions of RAM. * Both lists must have a zero-size entry as terminator. * The available regions need not take the kernel into account, but needs * to provide space for two additional entry beyond the terminating one. */ void mem_regions(struct mem_region **memp, struct mem_region **availp) { int phandle /*, i, j, cnt*/; /* * Get memory. */ if ((phandle = OF_finddevice("/memory")) == -1 || OF_getprop(phandle, "reg", OFmem, sizeof OFmem[0] * OFMEM_REGIONS) <= 0 || OF_getprop(phandle, "available", OFavail, sizeof OFavail[0] * OFMEM_REGIONS) <= 0) panic("no memory?"); *memp = OFmem; *availp = OFavail; } void set_openfirm_callback(int (*openfirm)(void *)) { ofwcall = openfirm; } int openfirmware(void *args) { long oldmsr; int result; u_int srsave[16]; if (pmap_bootstrapped) { __asm __volatile("mfsr %0,0" : "=r"(srsave[0])); __asm __volatile("mfsr %0,1" : "=r"(srsave[1])); __asm __volatile("mfsr %0,2" : "=r"(srsave[2])); __asm __volatile("mfsr %0,3" : "=r"(srsave[3])); __asm __volatile("mfsr %0,4" : "=r"(srsave[4])); __asm __volatile("mfsr %0,5" : "=r"(srsave[5])); __asm __volatile("mfsr %0,6" : "=r"(srsave[6])); __asm __volatile("mfsr %0,7" : "=r"(srsave[7])); __asm __volatile("mfsr %0,8" : "=r"(srsave[8])); __asm __volatile("mfsr %0,9" : "=r"(srsave[9])); __asm __volatile("mfsr %0,10" : "=r"(srsave[10])); __asm __volatile("mfsr %0,11" : "=r"(srsave[11])); __asm __volatile("mfsr %0,12" : "=r"(srsave[12])); __asm __volatile("mfsr %0,13" : "=r"(srsave[13])); __asm __volatile("mfsr %0,14" : "=r"(srsave[14])); __asm __volatile("mfsr %0,15" : "=r"(srsave[15])); __asm __volatile("mtsr 0,%0" :: "r"(ofw_pmap.pm_sr[0])); __asm __volatile("mtsr 1,%0" :: "r"(ofw_pmap.pm_sr[1])); __asm __volatile("mtsr 2,%0" :: "r"(ofw_pmap.pm_sr[2])); __asm __volatile("mtsr 3,%0" :: "r"(ofw_pmap.pm_sr[3])); __asm __volatile("mtsr 4,%0" :: "r"(ofw_pmap.pm_sr[4])); __asm __volatile("mtsr 5,%0" :: "r"(ofw_pmap.pm_sr[5])); __asm __volatile("mtsr 6,%0" :: "r"(ofw_pmap.pm_sr[6])); __asm __volatile("mtsr 7,%0" :: "r"(ofw_pmap.pm_sr[7])); __asm __volatile("mtsr 8,%0" :: "r"(ofw_pmap.pm_sr[8])); __asm __volatile("mtsr 9,%0" :: "r"(ofw_pmap.pm_sr[9])); __asm __volatile("mtsr 10,%0" :: "r"(ofw_pmap.pm_sr[10])); __asm __volatile("mtsr 11,%0" :: "r"(ofw_pmap.pm_sr[11])); __asm __volatile("mtsr 12,%0" :: "r"(ofw_pmap.pm_sr[12])); __asm __volatile("mtsr 13,%0" :: "r"(ofw_pmap.pm_sr[13])); __asm __volatile("mtsr 14,%0" :: "r"(ofw_pmap.pm_sr[14])); __asm __volatile("mtsr 15,%0" :: "r"(ofw_pmap.pm_sr[15])); } ofmsr |= PSL_RI|PSL_EE; __asm __volatile( "\t" "sync\n\t" "mfmsr %0\n\t" "mtmsr %1\n\t" "isync\n" : "=r" (oldmsr) : "r" (ofmsr) ); result = ofwcall(args); __asm( "\t" "mtmsr %0\n\t" "isync\n" : : "r" (oldmsr) ); if (pmap_bootstrapped) { __asm __volatile("mtsr 0,%0" :: "r"(srsave[0])); __asm __volatile("mtsr 1,%0" :: "r"(srsave[1])); __asm __volatile("mtsr 2,%0" :: "r"(srsave[2])); __asm __volatile("mtsr 3,%0" :: "r"(srsave[3])); __asm __volatile("mtsr 4,%0" :: "r"(srsave[4])); __asm __volatile("mtsr 5,%0" :: "r"(srsave[5])); __asm __volatile("mtsr 6,%0" :: "r"(srsave[6])); __asm __volatile("mtsr 7,%0" :: "r"(srsave[7])); __asm __volatile("mtsr 8,%0" :: "r"(srsave[8])); __asm __volatile("mtsr 9,%0" :: "r"(srsave[9])); __asm __volatile("mtsr 10,%0" :: "r"(srsave[10])); __asm __volatile("mtsr 11,%0" :: "r"(srsave[11])); __asm __volatile("mtsr 12,%0" :: "r"(srsave[12])); __asm __volatile("mtsr 13,%0" :: "r"(srsave[13])); __asm __volatile("mtsr 14,%0" :: "r"(srsave[14])); __asm __volatile("mtsr 15,%0" :: "r"(srsave[15])); __asm __volatile("sync"); } return (result); } void ppc_exit() { OF_exit(); } void ppc_boot(str) char *str; { OF_boot(str); }