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 45 extern char end[]; 46 extern vm_offset_t reloc; /* From <arch>/conf.c */ 47 48 int 49 ppc64_ofw_elf_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 /* 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 return (0); 65 } 66 67 int 68 ppc64_ofw_elf_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 81 /* Handle function descriptor for ELFv1 kernels */ 82 if ((e->e_flags & 3) == 2) 83 entry = e->e_entry; 84 else 85 entry = *(uint64_t *)(intptr_t)e->e_entry; 86 87 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0) 88 return (error); 89 90 printf("Kernel entry at 0x%lx ...\n", entry); 91 92 dev_cleanup(); 93 94 if (dtbp != 0) { 95 OF_quiesce(); 96 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp, 97 0, 0, (void *)mdp, 0xfb5d104d); 98 } else { 99 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, 100 (void *)mdp, 0xfb5d104d); 101 } 102 103 panic("exec returned"); 104 } 105 106 struct file_format ofw_elf64 = 107 { 108 ppc64_ofw_elf_loadfile, 109 ppc64_ofw_elf_exec 110 }; 111