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      1 /*	$NetBSD: smallnet.c,v 1.8 2011/01/22 19:19:21 joerg Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Simon Burge.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <lib/libsa/stand.h>
     33 #include <lib/libkern/libkern.h>
     34 #include <lib/libz/zlib.h>
     35 
     36 #include <sys/param.h>
     37 #include <sys/exec_elf.h>
     38 
     39 #include <machine/dec_prom.h>
     40 
     41 #include "../common/common.h"
     42 #include "../common/bootinfo.h"
     43 
     44 
     45 typedef void (*entrypt)(int, char **, int, const void *);
     46 
     47 int main(int, char **);
     48 
     49 /*
     50  * These variables and array will be patched to contain a kernel image
     51  * and some information about the kernel.
     52  */
     53 
     54 int maxkernel_size = KERNELSIZE;
     55 entrypt kernel_entry = 0 /* (entrypt)0x80030000 */ /* XXX XXX XXX */;
     56 u_long kernel_loadaddr = 0 /* 0x80030000 */ /* XXX XXX XXX */;
     57 int kernel_size = 0 /* 387321 */ /* XXX XXX XXX */;
     58 char kernel_image[KERNELSIZE] = "|This is the kernel image!\n";
     59 
     60 
     61 /*
     62  * This gets arguments from the PROM, calls other routines to open
     63  * and load the secondary boot loader called boot, and then transfers
     64  * execution to that program.
     65  *
     66  * Argv[0] should be something like "rz(0,0,0)netbsd" on a DECstation 3100.
     67  * Argv[0,1] should be something like "boot 5/rz0/netbsd" on a DECstation 5000.
     68  * The argument "-a" means netbsd should do an automatic reboot.
     69  */
     70 int
     71 main(int argc, char **argv)
     72 {
     73 	int ret;
     74 	char *name;
     75 	uLongf destlen;
     76 	struct btinfo_bootpath bi_bpath;
     77 
     78 	printf("NetBSD/pmax " NETBSD_VERS " " BOOT_TYPE_NAME
     79 	    " Bootstrap, Revision %s\n", bootprog_rev);
     80 
     81 	/* initialise bootinfo structure early */
     82 	bi_init(BOOTINFO_ADDR);
     83 
     84 	/* check for DS5000 boot */
     85 	if (strcmp(argv[0], "boot") == 0) {
     86 		argc--;
     87 		argv++;
     88 	}
     89 	name = *argv;
     90 
     91 	strncpy(bi_bpath.bootpath, name, BTINFO_BOOTPATH_LEN);
     92 	bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath));
     93 
     94 	destlen = RELOC - kernel_loadaddr;
     95 	printf("\n");
     96 	printf("Decompressing %d bytes to 0x%lx\n", kernel_size,
     97 	    kernel_loadaddr);
     98 	ret = uncompress((Bytef *)kernel_loadaddr, &destlen, kernel_image,
     99 	    kernel_size);
    100 	if (ret != Z_OK) {
    101 		printf("Error decompressing kernel\n");
    102 		printf("libz error %d\n", ret);
    103 		return (1);
    104 	}
    105 
    106 	if (callv == &callvec)
    107 		kernel_entry(argc, argv, 0, 0);
    108 	else
    109 		kernel_entry(argc, argv, DEC_PROM_MAGIC, callv);
    110 	return (1);
    111 }
    112