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 #define __ELF_WORD_SIZE 64 31 32 #include <sys/param.h> 33 #include <sys/linker.h> 34 35 #include <machine/metadata.h> 36 #include <machine/elf.h> 37 #include <machine/md_var.h> 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 ppc64_ofw_elf_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 /* 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 return (0); 66 } 67 68 int 69 ppc64_ofw_elf_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 82 /* Handle function descriptor for ELFv1 kernels */ 83 if ((e->e_flags & 3) == 2) 84 entry = e->e_entry; 85 else 86 entry = *(uint64_t *)(intptr_t)e->e_entry; 87 88 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0) 89 return (error); 90 91 printf("Kernel entry at 0x%x ...\n", entry); 92 93 dev_cleanup(); 94 95 if (dtbp != 0) { 96 OF_quiesce(); 97 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp, 98 0, 0, (void *)mdp, 0xfb5d104d); 99 } else { 100 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, 101 (void *)mdp, 0xfb5d104d); 102 } 103 104 panic("exec returned"); 105 } 106 107 struct file_format ofw_elf64 = 108 { 109 ppc64_ofw_elf_loadfile, 110 ppc64_ofw_elf_exec 111 }; 112