/*      $NetBSD: boot.c,v 1.1 2014/02/24 07:23:43 skrll Exp $   */

/*-
* Copyright (c) 1982, 1986, 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)boot.c      8.1 (Berkeley) 6/10/93
*/

/*
* Copyright (c) 1998-2004 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/

#include <sys/param.h>
#include <sys/reboot.h>
#include <sys/boot_flag.h>

#include <arch/hppa/stand/common/libsa.h>
#include <lib/libsa/loadfile.h>

#include <machine/pdc.h>
#include <machine/vmparam.h>

#include <arch/hppa/stand/common/dev_hppa.h>

#include "bootinfo.h"

/*
* Boot program... bits in `howto' determine whether boot stops to
* ask for system name.  Boot device is derived from ROM provided
* information.
*/

#define MAXLEN  100

char line[MAXLEN];
char devname_buffer[16];

extern  u_int opendev;
extern  char *lowram;
extern  int noconsole;

/*
* XXX UFS accepts a /, NFS doesn't.
*/
char *name;
char *names[] = {
       "netbsd",               "netbsd.gz",
       "netbsd.bak",           "netbsd.bak.gz",
       "netbsd.old",           "netbsd.old.gz",
       "onetbsd",              "onetbsd.gz",
       NULL
};
#define NUMNAMES        (sizeof(names) / sizeof(char *))

void boot(dev_t boot_dev);
int main(void);
void getbootdev(int *);
void exec_hppa(char *, u_long, int);

int tgets(char *);
void _rtt(void);

typedef void (*startfuncp)(int, int, int, int, int, void *)
   __attribute__ ((noreturn));

int howto;

void
boot(dev_t boot_dev)
{
       machdep();
#ifdef  DEBUGBUG
       debug = 1;
#endif
       devboot(boot_dev, devname_buffer);
       main();
}

int
main(void)
{
       int currname = 0;
       char *filename, filename_buffer[MAXLEN];

       printf("\n");
       printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
       printf(">> Enter \"reset\" to reset system.\n");

       for (;;) {
               size_t size;

               /* reset bootinfo structure */
               bi_init();

               name = names[currname++];
               if (currname == NUMNAMES)
                       currname = 0;

               if (!noconsole) {
                       howto = 0;
                       getbootdev(&howto);
               } else
                       printf(": %s\n", name);
               if (strchr(name, ':') != 0) {
                       filename = name;
               } else {
                       strcpy(filename_buffer, devname_buffer);
                       strcat(filename_buffer, ":");
                       strcat(filename_buffer, name);
                       filename = filename_buffer;
               }

               size = sizeof(struct btinfo_common) + strlen(name) + 1;
               /* Impose limit (somewhat arbitrary) */
               if (size < BOOTINFO_MAXSIZE / 2) {
                       union {
                               struct btinfo_kernelfile bi_file;
                               char x[size];
                       } U;
                       strcpy(U.bi_file.name, name);
                       BI_ADD(&U.bi_file, BTINFO_KERNELFILE, size);
               }

               exec_hppa(filename, 0, howto);
               printf("boot: %s\n", strerror(errno));
       }
}

void
getbootdev(int *boot_howto)
{
       char c, *ptr = line;
       int bdev, badapt, bctlr, bunit, bpart;

       bdev   = B_TYPE(bootdev);
       badapt = B_ADAPTOR(bootdev);
       bctlr  = B_CONTROLLER(bootdev);
       bunit  = B_UNIT(bootdev);
       bpart  = B_PARTITION(bootdev);

       printf("Boot: [[[%s%d%c:]%s][-a][-c][-d][-s][-v][-q]] :- ",
           devsw[bdev].dv_name, badapt << 8 | bctlr << 4 | bunit,
           'a' + bpart, name);

       if (tgets(line)) {
               if (strcmp(line, "reset") == 0) {
                       _rtt();
                       printf("panic: can't reboot\n");
                       return;
               }
               while ((c = *ptr) != '\0') {
                       while (c == ' ')
                               c = *++ptr;
                       if (!c)
                               return;
                       if (c == '-')
                               while ((c = *++ptr) && c != ' ')
                                       BOOT_FLAG(c, *boot_howto);
                       else {
                               name = ptr;
                               while ((c = *++ptr) && c != ' ');
                               if (c)
                                       *ptr++ = 0;
                       }
               }
       } else
               printf("\n");
}

#define round_to_size(x) \
       (((x) + sizeof(u_long) - 1) & ~(sizeof(u_long) - 1))

void
exec_hppa(char *file, u_long loadaddr, int boot_howto)
{
#ifdef EXEC_DEBUG
       extern int debug;
       int i;
#endif
       struct btinfo_symtab bi_syms;
       u_long marks[MARK_MAX];
       int fd;

       marks[MARK_START] = loadaddr;
#ifdef EXEC_DEBUG
       printf("file=%s loadaddr=%lx howto=%x\n",
               file, loadaddr, boot_howto);
#endif
       if ((fd = loadfile(file, marks, LOAD_KERNEL)) == -1)
               return;

       marks[MARK_END] = round_to_size(marks[MARK_END] - loadaddr);
       printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n",
           marks[MARK_ENTRY], marks[MARK_NSYM],
           marks[MARK_SYM], marks[MARK_END]);

#ifdef EXEC_DEBUG
       if (debug) {
               printf("ep=0x%lx [", marks[MARK_ENTRY]);
               for (i = 0; i < 10240; i++) {
                       if (!(i % 8)) {
                               printf("\b\n%p:", &((u_int *)marks[MARK_ENTRY])[i]);
                               if (getchar() != ' ')
                                       break;
                       }
                       printf("%x,", ((int *)marks[MARK_ENTRY])[i]);
               }
               printf("\b\b ]\n");
       }
#endif

       bi_syms.nsym = marks[MARK_NSYM];
       bi_syms.ssym = marks[MARK_SYM];
       bi_syms.esym = marks[MARK_END];
       BI_ADD(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms));

       fcacheall();

       __asm("mtctl %r0, %cr17");
       __asm("mtctl %r0, %cr17");

       /* stack and the gung is ok at this point, so, no need for asm setup */
       (*(startfuncp)(marks[MARK_ENTRY])) ((int)pdc, boot_howto, bootdev,
            marks[MARK_END], BOOTARG_APIVER, &bootinfo);
       /* not reached */
}

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