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/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/linker.h> 32 33 #include <machine/metadata.h> 34 #include <machine/elf.h> 35 #if defined(__powerpc__) 36 #include <machine/md_var.h> 37 #endif 38 39 #include <stand.h> 40 41 #include "bootstrap.h" 42 #include "libofw.h" 43 #include "openfirm.h" 44 #include "modinfo.h" 45 46 extern char end[]; 47 extern vm_offset_t reloc; /* From <arch>/conf.c */ 48 49 int 50 __elfN(ofw_loadfile)(char *filename, uint64_t dest, 51 struct preloaded_file **result) 52 { 53 int r; 54 55 r = __elfN(loadfile)(filename, dest, result); 56 if (r != 0) 57 return (r); 58 59 #if defined(__powerpc__) 60 /* 61 * No need to sync the icache for modules: this will 62 * be done by the kernel after relocation. 63 */ 64 if (!strcmp((*result)->f_type, "elf kernel")) 65 __syncicache((void *) (*result)->f_addr, (*result)->f_size); 66 #endif 67 return (0); 68 } 69 70 int 71 __elfN(ofw_exec)(struct preloaded_file *fp) 72 { 73 struct file_metadata *fmp; 74 vm_offset_t mdp, dtbp; 75 Elf_Ehdr *e; 76 int error; 77 intptr_t entry; 78 79 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) { 80 return(EFTYPE); 81 } 82 e = (Elf_Ehdr *)&fmp->md_data; 83 entry = e->e_entry; 84 85 if ((error = md_load(fp->f_args, &mdp, &dtbp)) != 0) 86 return (error); 87 88 printf("Kernel entry at 0x%x ...\n", entry); 89 90 dev_cleanup(); 91 if (dtbp != 0) { 92 OF_quiesce(); 93 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp, 94 0, 0, (void *)mdp, 0xfb5d104d); 95 } else { 96 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, 97 (void *)mdp, 0xfb5d104d); 98 } 99 100 panic("exec returned"); 101 } 102 103 struct file_format ofw_elf = 104 { 105 __elfN(ofw_loadfile), 106 __elfN(ofw_exec) 107 }; 108