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