/* $NetBSD: kloader_machdep.c,v 1.5 2008/04/28 20:23:16 martin Exp $ */ /*- * Copyright (c) 2001, 2002, 2004 The NetBSD Foundation, Inc. * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ #include __KERNEL_RCSID(0, "$NetBSD: kloader_machdep.c,v 1.5 2008/04/28 20:23:16 martin Exp $"); #include "debug_kloader.h" #include #include #include #include #include #include #include kloader_jumpfunc_t kloader_dreamcast_jump; kloader_bootfunc_t kloader_dreamcast_boot; struct kloader_ops kloader_dreamcast_ops = { .jump = kloader_dreamcast_jump, .boot = kloader_dreamcast_boot, }; void kloader_reboot_setup(const char *filename) { __kloader_reboot_setup(&kloader_dreamcast_ops, filename); } void kloader_dreamcast_jump(kloader_bootfunc_t func, vaddr_t sp, struct kloader_bootinfo *info, struct kloader_page_tag *tag) { sh_icache_sync_all(); /* also flush d-cache */ __asm volatile( "mov %0, r4;" "mov %1, r5;" "jmp @%2;" "mov %3, sp" : : "r"(info), "r"(tag), "r"(func), "r"(sp)); /* NOTREACHED */ } /* * 2nd-bootloader. Make sure that PIC and its size is lower than page size. */ void kloader_dreamcast_boot(struct kloader_bootinfo *kbi, struct kloader_page_tag *p) { int tmp = 0; /* Disable interrupt. block exception. */ __asm volatile( "stc sr, %1;" "or %0, %1;" "ldc %1, sr" : : "r"(0x500000f0), "r"(tmp)); /* Now I run on P1, TLB flush. and disable. */ SH4_TLB_DISABLE; do { uint32_t *dst =(uint32_t *)p->dst; uint32_t *src =(uint32_t *)p->src; uint32_t sz = p->sz / sizeof (int); while (sz--) *dst++ = *src++; } while ((p = (struct kloader_page_tag *)p->next) != 0); SH7750_CACHE_FLUSH(); /* jump to kernel entry. */ __asm volatile( "jmp @%0;" "nop;" : : "r"(kbi->entry)); /* NOTREACHED */ }