1 /*- 2 * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/linker.h> 29 30 #include <machine/metadata.h> 31 #include <machine/elf.h> 32 #if defined(__powerpc__) 33 #include <machine/md_var.h> 34 #endif 35 36 #include <stand.h> 37 38 #include "bootstrap.h" 39 #include "libofw.h" 40 #include "openfirm.h" 41 #include "modinfo.h" 42 43 extern char end[]; 44 extern vm_offset_t reloc; /* From <arch>/conf.c */ 45 46 int 47 __elfN(ofw_loadfile)(char *filename, uint64_t dest, 48 struct preloaded_file **result) 49 { 50 int r; 51 52 r = __elfN(loadfile)(filename, dest, result); 53 if (r != 0) 54 return (r); 55 56 #if defined(__powerpc__) 57 /* 58 * No need to sync the icache for modules: this will 59 * be done by the kernel after relocation. 60 */ 61 if (!strcmp((*result)->f_type, "elf kernel")) 62 __syncicache((void *) (*result)->f_addr, (*result)->f_size); 63 #endif 64 return (0); 65 } 66 67 int 68 __elfN(ofw_exec)(struct preloaded_file *fp) 69 { 70 struct file_metadata *fmp; 71 vm_offset_t mdp, dtbp; 72 Elf_Ehdr *e; 73 int error; 74 intptr_t entry; 75 76 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) { 77 return(EFTYPE); 78 } 79 e = (Elf_Ehdr *)&fmp->md_data; 80 entry = e->e_entry; 81 82 if ((error = md_load(fp->f_args, &mdp, &dtbp)) != 0) 83 return (error); 84 85 printf("Kernel entry at 0x%x ...\n", entry); 86 87 dev_cleanup(); 88 if (dtbp != 0) { 89 OF_quiesce(); 90 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp, 91 0, 0, (void *)mdp, 0xfb5d104d); 92 } else { 93 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, 94 (void *)mdp, 0xfb5d104d); 95 } 96 97 panic("exec returned"); 98 } 99 100 struct file_format ofw_elf = 101 { 102 __elfN(ofw_loadfile), 103 __elfN(ofw_exec) 104 }; 105