/*      $NetBSD: boot.c,v 1.7 2022/02/16 23:49:27 riastradh Exp $       */

/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/

#include <lib/libsa/stand.h>
#include <lib/libsa/loadfile.h>
#include <lib/libkern/libkern.h>
#include <sys/reboot.h>
#include <sys/boot_flag.h>
#include <machine/bootinfo.h>
#include <machine/cpu.h>
#include <machine/iplcb.h>
#include <powerpc/spr.h>
#include <powerpc/oea/spr.h>

#include "boot.h"

char *names[] = {
       "in()",
};
#define NUMNAMES (sizeof (names) / sizeof (names[0]))

#define NAMELEN 128
char namebuf[NAMELEN];
char nametmp[NAMELEN];

unsigned char cregs[10];

char bootinfo[BOOTINFO_MAXSIZE];
struct btinfo_iplcb btinfo_iplcb;
struct btinfo_console btinfo_console;

/*struct ipl_cb iplcb;
struct ipl_directory ipldir;*/

extern u_long ns_per_tick;
extern char bootprog_name[], bootprog_rev[];

void boot(void *, void *);
static void exec_kernel(char *);

#define PSL_DR  (1<<4)
#define PSL_EE  0x00008000
#define BAT_BL_128K     0x00000000
#define BAT_BL_1M       0x0000001c
#define BAT_BL_2M       0x0000003c
#define BAT_W           0x00000040
#define BAT_I           0x00000020
#define BAT_M           0x00000010
#define BAT_G           0x00000008
#define BAT_X           0x00000004
#define BAT_Vs          0x00000002
#define BAT_Vu          0x00000001
#define BAT_PP_RW       0x00000002
#define BAT_RPN         (~0x1ffff)
#define BAT_EPI         (~0x1ffffL)
#define BAT_V           (BAT_Vs|BAT_Vu)
#define BAT_BL          0x00001ffc

#define BATU(va, len, v)        \
       (((va) & BAT_EPI) | ((len) & BAT_BL) | ((v) & BAT_V))
#define BATL(pa, wimg, pp)      \
       (((pa) & BAT_RPN) | (wimg) | (pp))


static void
setled(uint32_t val)
{
#ifdef POWER
       register_t savemsr, msr, savesr15;

       __asm volatile ("mfmsr %0" : "=r"(savemsr));
       msr = savemsr & ~PSL_DR;
       __asm volatile ("mtmsr %0" : : "r"(msr));

       __asm volatile ("mfsr %0,15;isync" : "=r"(savesr15));
       __asm volatile ("mtsr 15,%0" : : "r"(0x82040080));
       __asm volatile ("mtmsr %0" : : "r"(msr|PSL_DR));
       __asm volatile ("isync");
       *(uint32_t *)0xF0A00300 = val;
       __asm volatile ("mtmsr %0" : : "r"(savemsr));
       __asm volatile ("mtsr 15,%0;isync" : : "r"(savesr15));
#else
#ifdef NOTYET
       register_t savemsr, msr, batu, batl;

       /* turn on DR */
       __asm volatile ("mfmsr %0" : "=r"(savemsr));
       msr = savemsr|PSL_DR;
       __asm volatile ("mtmsr %0" : : "r"(msr));
       __asm volatile ("isync");

       /* set up a bat and map the whole NVRAM chunk */
       batl = BATL(0xFF600000, BAT_I|BAT_G, BAT_PP_RW);
       batu = BATU(0xFF600000, BAT_BL_1M, BAT_Vs);
       __asm volatile ("mtdbatl 1,%0; mtdbatu 1,%1;"
           ::  "r"(batl), "r"(batu));
       __asm volatile ("isync");

       *(volatile uint32_t *)0xFF600300 = val;
       __asm volatile ("eieio" ::: "memory");
       __asm volatile ("isync");

       /* put back to normal */
       __asm volatile ("mtmsr %0" : : "r"(savemsr));
       __asm volatile ("isync");
#endif /* NOTYET */
#endif
}


void
boot(void *iplcb_p, void *extiplcb_p)
{
       extern char _end[], _edata[];
       int n = 0;
       int addr, speed;
       /*unsigned int cpuvers;*/
       char *name, *cnname, *p;
       struct ipl_cb *iplcb_ptr;
       struct ipl_directory *dirp;
       struct ipl_info *infop;

       //setled(0x30100000); /* we have control */
       //for (;;);
       iplcb_ptr = (struct ipl_cb *)iplcb_p;
       dirp = &(iplcb_ptr->dir);

       /* Clear all of BSS */
       memset(_edata, 0, _end - _edata);

       /*
        * console init
        */
       //setled(0x30000000); /* attempting r14 setup */
       setup_iocc();
       //setled(0x31000000); /* attempting console init */
       cnname = cninit(&addr, &speed);
       printf("\n");
       //setled(0x31100000); /* we have the console */

       printf("IPLCB ptr = %p\n", iplcb_p);

       infop = (struct ipl_info *)((char *)iplcb_p + dirp->iplinfo_off);
       printf("Machine model = 0x%x\n", infop->model);
       printf("RAM = 0x%x\n", infop->ram_size);

       //dump_iplcb(iplcb_p);

       /* make bootinfo */
       /*
        * ipl control block
        */
       btinfo_iplcb.common.next = sizeof(btinfo_iplcb);
       btinfo_iplcb.common.type = BTINFO_IPLCB;
       if (iplcb_ptr) {
               btinfo_iplcb.addr = (void *)iplcb_p;
       } else {
               printf("Warning: no IPL Control Block.\n");
               btinfo_iplcb.addr = 0;
       }

       /*
        * console
        */
       btinfo_console.common.next = sizeof(btinfo_console);
       btinfo_console.common.type = BTINFO_CONSOLE;
       strcpy(btinfo_console.devname, cnname);
       btinfo_console.addr = addr;
       btinfo_console.speed = speed;

       p = bootinfo;
       memcpy(p, (void *)&btinfo_iplcb, sizeof(btinfo_iplcb));
       p += sizeof(btinfo_iplcb);
       memcpy(p, (void *)&btinfo_console, sizeof(btinfo_console));
       p += sizeof(btinfo_console);

       /*
        * load kernel if attached
        */
       init_in(RELOC);

       setled(0x38000000); /* attempting boot */
       printf("\n");
       printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);

       for (;;) {
               name = names[n++];
               if (n >= NUMNAMES)
                       n = 0;
               setled(0x38100000 + (0x100000 * n));
               exec_kernel(name);
               setled(0x39900000); /* boot failed! */
       }
}

/*
* Exec kernel
*/
static void
exec_kernel(char *name)
{
       int howto = 0;
       char c, *ptr;
       u_long marks[MARK_MAX];
#ifdef DBMONITOR
       int go_monitor;
       extern int db_monitor(void);

ret:
#endif /* DBMONITOR */
       printf("\nBoot: ");
       memset(namebuf, 0, sizeof (namebuf));
       if (tgets(namebuf) == -1)
               printf("\n");

       ptr = namebuf;
#ifdef DBMONITOR
       go_monitor = 0;
       if (*ptr == '!') {
               if (*(++ptr) == NULL) {
                       db_monitor();
                       printf("\n");
                       goto ret;
               } else {
                       go_monitor++;
               }
       }
#endif /* DBMONITOR */
       while ((c = *ptr)) {
               while (c == ' ')
                       c = *++ptr;
               if (!c)
                       goto next;
               if (c == '-') {
                       while ((c = *++ptr) && c != ' ')
                               BOOT_FLAG(c, howto);
               } else {
                       name = ptr;
                       while ((c = *++ptr) && c != ' ');
                       if (c)
                               *ptr++ = 0;
               }
       }

next:
       printf("Loading %s", name);
       if (howto)
               printf(" (howto 0x%x)", howto);
       printf("\n");

       marks[MARK_START] = 0;
       if (loadfile(name, marks, LOAD_ALL) == 0) {
#ifdef DBMONITOR
               if (go_monitor) {
                       db_monitor();
                       printf("\n");
               }
#endif /* DBMONITOR */

               printf("start=0x%lx\n\n", marks[MARK_ENTRY]);
               delay(1000);
               __syncicache((void *)marks[MARK_ENTRY],
                       (u_int)marks[MARK_SYM] - (u_int)marks[MARK_ENTRY]);
               printf("About to run\n");
               run((void *)marks[MARK_SYM],
                   (void *)marks[MARK_END],
                   (void *)howto,
                   (void *)bootinfo,
                   (void *)marks[MARK_ENTRY]);
       }
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.