/*      $OpenBSD: machdep.c,v 1.1 2023/03/11 20:56:01 miod Exp $        */
/*      $NetBSD: boot.c,v 1.10 1997/01/18 01:58:33 cgd Exp $    */

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * 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
 */

#include <sys/param.h>
#include <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/loadfile.h>
#include <stand/boot/cmd.h>

#include <sys/exec.h>
#include <sys/stat.h>
#include <sys/reboot.h>

#include <machine/rpb.h>
#include <machine/prom.h>
#include <machine/autoconf.h>

void init_prom_calls(void);
void OSFpal(void);
void halt(void);
long alpha_rpcc(void);

int
main()
{
#ifdef DEBUG
        struct rpb *r;
        struct mddt *mddtp;
        struct mddt_cluster *memc;
        int i;
#endif
        static char boot_file[128];
        extern char *kernelfile;
        char *s;
        int uppercase = 1;

        /* Init prom callback vector. */
        init_prom_calls();

        cninit();

        /* switch to OSF pal code. */
        OSFpal();

#ifdef DEBUG
        r = (struct rpb *)HWRPB_ADDR;
        mddtp = (struct mddt *)(HWRPB_ADDR + r->rpb_memdat_off);
        printf("%d memory clusters\n", mddtp->mddt_cluster_cnt);
        for (i = 0; i < mddtp->mddt_cluster_cnt; i++) {
                memc = &mddtp->mddt_clusters[i];
                printf("%d: (%d) %lx-%lx\n", i, memc->mddt_usage,
                    memc->mddt_pfn << PAGE_SHIFT,
                    (memc->mddt_pfn + memc->mddt_pg_cnt) << PAGE_SHIFT);
        }
#endif

        prom_getenv(PROM_E_BOOTED_FILE, boot_file, sizeof(boot_file));

        if (boot_file[0] != '\0') {
                /*
                 * If boot_file is all caps, then we are likely on an old
                 * (DEC 3000) prom which upper cases everything.
                 */
                for (s = boot_file; *s != '\0'; s++) {
                        if (islower(*s)) {
                                uppercase = 0;
                                break;
                        }
                }
                if (uppercase) {
                        for (s = boot_file; *s != '\0'; s++)
                                *s = tolower(*s);
                }
                kernelfile = boot_file;
                /*
                 * Unfortunately there doesn't seem to be a way to tell apart
                 * a kernel file provided via "boot -fi" (in which case we
                 * ought to boot immediately by setting bootprompt to zero)
                 * from a kernel file provided via the SRM environment (in
                 * which case we want to default to interactive operation).
                 */
        }

        boot(0);
}

void
devboot(dev_t dev /* ignored */, char *path)
{
        /*
         * Although there is unfortunately no way to use SRM device names
         * here, we need to provide a dummy device name since the boot loader
         * code relies upon "device:path" syntax.
         */
        snprintf(path, BOOTDEVLEN, "disk");
}

void
machdep()
{
        /* Nothing to do - everything done in main() already */
}

void
run_loadfile(uint64_t *marks, int howto)
{
        extern paddr_t ptbr_save;
        static struct bootinfo_v1 bootinfo_v1;
        u_int64_t entry;
        char boot_flags[128];

        /*
         * Fill in the bootinfo for the kernel.
         */
        bzero(&bootinfo_v1, sizeof(bootinfo_v1));
        bootinfo_v1.ssym = marks[MARK_SYM];
        bootinfo_v1.esym = marks[MARK_END];
//      bcopy(name, bootinfo_v1.booted_kernel,
//          sizeof(bootinfo_v1.booted_kernel));
        prom_getenv(PROM_E_BOOTED_OSFLAGS, boot_flags, sizeof(boot_flags));
        bcopy(boot_flags, bootinfo_v1.boot_flags,
            sizeof(bootinfo_v1.boot_flags));
        bootinfo_v1.hwrpb = (void *)HWRPB_ADDR;
        bootinfo_v1.hwrpbsize = ((struct rpb *)HWRPB_ADDR)->rpb_size;
        bootinfo_v1.cngetc = NULL;
        bootinfo_v1.cnputc = NULL;
        bootinfo_v1.cnpollc = NULL;
        bootinfo_v1.howto = howto;

        entry = marks[MARK_START];
        (*(void (*)(u_int64_t, u_int64_t, u_int64_t, void *, u_int64_t,
            u_int64_t))entry)(0, ptbr_save, BOOTINFO_MAGIC, &bootinfo_v1, 1, 0);
}

/*
 * "machine tty" command to select a different console is not supported,
 */

int
cnspeed(dev_t dev, int sp)
{
        return 9600;
}

char *
ttyname(int fd)
{
        return "console";
}

dev_t
ttydev(char *name)
{
        return NODEV;
}

time_t
getsecs()
{
        static long tnsec;
        static long lastpcc, wrapsecs;
        long curpcc;

        if (tnsec == 0) {
                tnsec = 1;
                lastpcc = alpha_rpcc() & 0xffffffff;
                wrapsecs = (0xffffffff /
                    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq) + 1;

#if 0
                printf("getsecs: cc freq = %d, time to wrap = %d\n",
                    ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq, wrapsecs);
#endif
        }

        curpcc = alpha_rpcc() & 0xffffffff;
        if (curpcc < lastpcc)
                curpcc += 0x100000000;

        tnsec += ((curpcc - lastpcc) * 1000000000) / ((struct rpb *)HWRPB_ADDR)->rpb_cc_freq;
        lastpcc = curpcc;

        return (tnsec / 1000000000);
}