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/*
* barebox - bootm.c
*
* (C) Copyright 2011 - Franck JULLIEN <elec4fun@gmail.com>
*
* (C) Copyright 2003, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <command.h>
#include <image.h>
#include <environment.h>
#include <init.h>
#include <boot.h>
#include <errno.h>
#include <asm/cache.h>
#define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */
static int do_bootm_linux(struct image_data *idata)
{
void (*kernel)(int, int, int, const char *);
const char *commandline = linux_bootargs_get();
if (!idata->os_res)
return -EINVAL;
kernel = (void *)(idata->os_address + idata->os_entry);
/* kernel parameters passing
* r4 : NIOS magic
* r5 : initrd start
* r6 : initrd end or fdt
* r7 : kernel command line
* fdt is passed to kernel via r6, the same as initrd_end. fdt will be
* verified with fdt magic. when both initrd and fdt are used at the
* same time, fdt must follow immediately after initrd.
*/
/* flushes data and instruction caches before calling the kernel */
flush_cache_all();
kernel(NIOS_MAGIC, 0, 0, commandline);
/* does not return */
return 1;
}
static struct image_handler handler = {
.name = "NIOS2 Linux",
.bootm = do_bootm_linux,
.filetype = filetype_uimage,
.ih_os = IH_OS_LINUX,
};
int nios2_register_image_handler(void)
{
return register_image_handler(&handler);
}
late_initcall(nios2_register_image_handler);
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