elf_freebsd.c revision 283035
1203288Srnoland/*- 2203288Srnoland * Copyright (c) 2001 Benno Rice <benno@FreeBSD.org> 3203288Srnoland * Copyright (c) 2007 Semihalf, Rafal Jaworowski <raj@semihalf.com> 4203288Srnoland * All rights reserved. 5203288Srnoland * 6203288Srnoland * Redistribution and use in source and binary forms, with or without 7203288Srnoland * modification, are permitted provided that the following conditions 8203288Srnoland * are met: 9203288Srnoland * 1. Redistributions of source code must retain the above copyright 10203288Srnoland * notice, this list of conditions and the following disclaimer. 11203288Srnoland * 2. Redistributions in binary form must reproduce the above copyright 12203288Srnoland * notice, this list of conditions and the following disclaimer in the 13203288Srnoland * documentation and/or other materials provided with the distribution. 14203288Srnoland * 15203288Srnoland * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16203288Srnoland * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17203288Srnoland * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18203288Srnoland * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19203288Srnoland * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20203288Srnoland * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21203288Srnoland * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22203288Srnoland * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23203288Srnoland * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24203288Srnoland * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25203288Srnoland * SUCH DAMAGE. 26203288Srnoland */ 27203288Srnoland 28203288Srnoland#include <sys/cdefs.h> 29203288Srnoland__FBSDID("$FreeBSD: head/sys/boot/uboot/lib/elf_freebsd.c 283035 2015-05-17 19:59:05Z ian $"); 30203288Srnoland 31203288Srnoland#include <sys/param.h> 32203288Srnoland#include <sys/linker.h> 33203288Srnoland 34203288Srnoland#include <machine/md_var.h> 35203288Srnoland#include <machine/metadata.h> 36203288Srnoland#include <machine/elf.h> 37203288Srnoland 38203288Srnoland#include <stand.h> 39203288Srnoland 40203288Srnoland#include "bootstrap.h" 41203288Srnoland#include "libuboot.h" 42203288Srnoland 43203288Srnolandextern vm_offset_t md_load(char *, vm_offset_t *); 44203288Srnoland 45203288Srnolandint 46203288Srnoland__elfN(uboot_load)(char *filename, u_int64_t dest, 47203288Srnoland struct preloaded_file **result) 48203288Srnoland{ 49203288Srnoland int r; 50203288Srnoland 51203288Srnoland r = __elfN(loadfile)(filename, dest, result); 52203288Srnoland if (r != 0) 53203288Srnoland return (r); 54203288Srnoland 55203288Srnoland#if defined(__powerpc__) 56203288Srnoland /* 57203288Srnoland * No need to sync the icache for modules: this will 58203288Srnoland * be done by the kernel after relocation. 59203288Srnoland */ 60203288Srnoland if (!strcmp((*result)->f_type, "elf kernel")) 61203288Srnoland __syncicache((void *) (*result)->f_addr, (*result)->f_size); 62203288Srnoland#endif 63203288Srnoland return (0); 64203288Srnoland} 65203288Srnoland 66203288Srnolandint 67203288Srnoland__elfN(uboot_exec)(struct preloaded_file *fp) 68203288Srnoland{ 69203288Srnoland struct file_metadata *fmp; 70203288Srnoland vm_offset_t mdp; 71203288Srnoland Elf_Ehdr *e; 72203288Srnoland int error; 73203288Srnoland void (*entry)(void *); 74203288Srnoland 75203288Srnoland if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 76203288Srnoland return (EFTYPE); 77203288Srnoland 78203288Srnoland e = (Elf_Ehdr *)&fmp->md_data; 79203288Srnoland 80203288Srnoland if ((error = md_load(fp->f_args, &mdp)) != 0) 81203288Srnoland return (error); 82203288Srnoland 83203288Srnoland entry = (void *)e->e_entry; 84203288Srnoland printf("Kernel entry at 0x%x...\n", (unsigned)entry); 85203288Srnoland 86203288Srnoland dev_cleanup(); 87203288Srnoland printf("Kernel args: %s\n", fp->f_args); 88203288Srnoland 89203288Srnoland (*entry)((void *)mdp); 90203288Srnoland panic("exec returned"); 91203288Srnoland} 92203288Srnoland 93203288Srnolandstruct file_format uboot_elf = { 94203288Srnoland __elfN(uboot_load), 95203288Srnoland __elfN(uboot_exec) 96203288Srnoland}; 97203288Srnoland