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 #define __ELF_WORD_SIZE 64 28 29 #include <sys/param.h> 30 #include <sys/linker.h> 31 32 #include <machine/metadata.h> 33 #include <machine/elf.h> 34 #include <machine/md_var.h> 35 36 #include <stand.h> 37 38 #include "bootstrap.h" 39 #include "libofw.h" 40 #include "openfirm.h" 41 #include "modinfo.h" 42 43 extern char end[]; 44 extern vm_offset_t reloc; /* From <arch>/conf.c */ 45 46 int 47 ppc64_ofw_elf_loadfile(char *filename, uint64_t dest, 48 struct preloaded_file **result) 49 { 50 int r; 51 52 r = __elfN(loadfile)(filename, dest, result); 53 if (r != 0) 54 return (r); 55 56 /* 57 * No need to sync the icache for modules: this will 58 * be done by the kernel after relocation. 59 */ 60 if (!strcmp((*result)->f_type, "elf kernel")) 61 __syncicache((void *) (*result)->f_addr, (*result)->f_size); 62 return (0); 63 } 64 65 int 66 ppc64_ofw_elf_exec(struct preloaded_file *fp) 67 { 68 struct file_metadata *fmp; 69 vm_offset_t mdp, dtbp; 70 Elf_Ehdr *e; 71 int error; 72 intptr_t entry; 73 74 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) { 75 return(EFTYPE); 76 } 77 e = (Elf_Ehdr *)&fmp->md_data; 78 79 /* Handle function descriptor for ELFv1 kernels */ 80 if ((e->e_flags & 3) == 2) 81 entry = e->e_entry; 82 else 83 entry = *(uint64_t *)(intptr_t)e->e_entry; 84 85 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0) 86 return (error); 87 88 printf("Kernel entry at 0x%x ...\n", entry); 89 90 dev_cleanup(); 91 92 if (dtbp != 0) { 93 OF_quiesce(); 94 ((int (*)(u_long, u_long, u_long, void *, u_long))entry)(dtbp, 95 0, 0, (void *)mdp, 0xfb5d104d); 96 } else { 97 OF_chain((void *)reloc, end - (char *)reloc, (void *)entry, 98 (void *)mdp, 0xfb5d104d); 99 } 100 101 panic("exec returned"); 102 } 103 104 struct file_format ofw_elf64 = 105 { 106 ppc64_ofw_elf_loadfile, 107 ppc64_ofw_elf_exec 108 }; 109