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 "libuboot.h" 40 #include "modinfo.h" 41 42 int 43 ppc64_uboot_elf_loadfile(char *filename, uint64_t dest, 44 struct preloaded_file **result) 45 { 46 int r; 47 48 r = __elfN(loadfile)(filename, dest, result); 49 if (r != 0) 50 return (r); 51 52 /* 53 * No need to sync the icache for modules: this will 54 * be done by the kernel after relocation. 55 */ 56 if (!strcmp((*result)->f_type, "elf kernel")) 57 __syncicache((void *) (*result)->f_addr, (*result)->f_size); 58 return (0); 59 } 60 61 int 62 ppc64_uboot_elf_exec(struct preloaded_file *fp) 63 { 64 struct file_metadata *fmp; 65 vm_offset_t mdp, dtbp; 66 Elf_Ehdr *e; 67 int error; 68 void (*entry)(void *); 69 70 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) { 71 return(EFTYPE); 72 } 73 e = (Elf_Ehdr *)&fmp->md_data; 74 75 /* Handle function descriptor for ELFv1 kernels */ 76 if ((e->e_flags & 3) == 2) 77 entry = (void (*)(void*))(intptr_t)e->e_entry; 78 else 79 entry = *(void (*)(void*))(uint64_t *)(intptr_t)e->e_entry; 80 81 if ((error = md_load64(fp->f_args, &mdp, &dtbp)) != 0) 82 return (error); 83 84 dev_cleanup(); 85 printf("Kernel args: %s\n", fp->f_args); 86 87 (*entry)((void *)mdp); 88 panic("exec returned"); 89 } 90 91 struct file_format uboot_elf64 = 92 { 93 ppc64_uboot_elf_loadfile, 94 ppc64_uboot_elf_exec 95 }; 96