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