1 /*- 2 * Copyright (c) 2006 Marcel Moolenaar 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <stand.h> 29 #include <string.h> 30 31 #include <sys/param.h> 32 #include <sys/linker.h> 33 #include <machine/elf.h> 34 35 #include <bootstrap.h> 36 37 #include <efi.h> 38 #include <efilib.h> 39 40 #include "loader_efi.h" 41 #include "cache.h" 42 43 static int elf64_exec(struct preloaded_file *amp); 44 static int elf64_obj_exec(struct preloaded_file *amp); 45 46 int bi_load(char *args, vm_offset_t *modulep, vm_offset_t *kernendp, 47 bool exit_bs); 48 49 static struct file_format arm64_elf = { 50 elf64_loadfile, 51 elf64_exec 52 }; 53 54 struct file_format *file_formats[] = { 55 &arm64_elf, 56 NULL 57 }; 58 59 static int 60 elf64_exec(struct preloaded_file *fp) 61 { 62 vm_offset_t modulep, kernendp; 63 vm_offset_t clean_addr; 64 size_t clean_size; 65 struct file_metadata *md; 66 Elf_Ehdr *ehdr; 67 int err; 68 void (*entry)(vm_offset_t); 69 70 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 71 return(EFTYPE); 72 73 ehdr = (Elf_Ehdr *)&(md->md_data); 74 entry = efi_translate(ehdr->e_entry); 75 76 efi_time_fini(); 77 err = bi_load(fp->f_args, &modulep, &kernendp, true); 78 if (err != 0) { 79 efi_time_init(); 80 return (err); 81 } 82 83 dev_cleanup(); 84 85 /* Clean D-cache under kernel area and invalidate whole I-cache */ 86 clean_addr = (vm_offset_t)efi_translate(fp->f_addr); 87 clean_size = (vm_offset_t)efi_translate(kernendp) - clean_addr; 88 89 cpu_flush_dcache((void *)clean_addr, clean_size); 90 cpu_inval_icache(); 91 92 (*entry)(modulep); 93 panic("exec returned"); 94 } 95 96 static int 97 elf64_obj_exec(struct preloaded_file *fp) 98 { 99 100 printf("%s called for preloaded file %p (=%s):\n", __func__, fp, 101 fp->f_name); 102 return (ENOSYS); 103 } 104 105