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