1 /*- 2 * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org> 3 * Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/linker.h> 33 34 #include <machine/md_var.h> 35 #include <machine/metadata.h> 36 #include <machine/elf.h> 37 38 #include <stand.h> 39 40 #include "bootstrap.h" 41 #include "libuboot.h" 42 43 extern vm_offset_t md_load(char *, vm_offset_t *, vm_offset_t *); 44 45 int 46 __elfN(uboot_load)(char *filename, uint64_t dest, 47 struct preloaded_file **result) 48 { 49 int r; 50 51 r = __elfN(loadfile)(filename, dest, result); 52 if (r != 0) 53 return (r); 54 55 #if defined(__powerpc__) 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 #endif 63 return (0); 64 } 65 66 int 67 __elfN(uboot_exec)(struct preloaded_file *fp) 68 { 69 struct file_metadata *fmp; 70 vm_offset_t mdp; 71 Elf_Ehdr *e; 72 int error; 73 void (*entry)(void *); 74 75 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 76 return (EFTYPE); 77 78 e = (Elf_Ehdr *)&fmp->md_data; 79 80 if ((error = md_load(fp->f_args, &mdp, NULL)) != 0) 81 return (error); 82 83 entry = (void *)e->e_entry; 84 printf("Kernel entry at %p...\n", entry); 85 86 dev_cleanup(); 87 printf("Kernel args: %s\n", fp->f_args); 88 89 (*entry)((void *)mdp); 90 panic("exec returned"); 91 } 92 93 struct file_format uboot_elf = { 94 __elfN(uboot_load), 95 __elfN(uboot_exec) 96 }; 97