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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/stand/uboot/elf_freebsd.c
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/*-

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 * Copyright (c) 2001 Benno Rice <[email protected]>

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 * Copyright (c) 2007 Semihalf, Rafal Jaworowski <[email protected]>

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

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 * SUCH DAMAGE.

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 */

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#include <sys/param.h>

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#include <sys/linker.h>

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#include <machine/md_var.h>

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#include <machine/metadata.h>

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#include <machine/elf.h>

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#include <stand.h>

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#include "bootstrap.h"

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#include "libuboot.h"

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#include "modinfo.h"

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int

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__elfN(uboot_load)(char *filename, uint64_t dest,

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    struct preloaded_file **result)

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{

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	int r;

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	r = __elfN(loadfile)(filename, dest, result);

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	if (r != 0)

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		return (r);

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#if defined(__powerpc__)

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	/*

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	 * No need to sync the icache for modules: this will

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	 * be done by the kernel after relocation.

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	 */

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	if (!strcmp((*result)->f_type, md_kerntype))

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		__syncicache((void *) (*result)->f_addr, (*result)->f_size);

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#endif

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	return (0);

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}

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int

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__elfN(uboot_exec)(struct preloaded_file *fp)

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{

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	struct file_metadata *fmp;

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	vm_offset_t mdp;

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	Elf_Ehdr *e;

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	int error;

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	void (*entry)(void *);

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	if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)

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		return (EFTYPE);

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	e = (Elf_Ehdr *)&fmp->md_data;

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	if ((error = md_load(fp->f_args, &mdp, NULL)) != 0)

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		return (error);

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	entry = (void *)e->e_entry;

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	printf("Kernel entry at %p...\n", entry);

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	dev_cleanup();

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	printf("Kernel args: %s\n", fp->f_args);

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	(*entry)((void *)mdp);

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	panic("exec returned");

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}

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struct file_format uboot_elf = {

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	__elfN(uboot_load),

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	__elfN(uboot_exec)

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};

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