NetBSD-5.0.2/sys/arch/next68k/next68k/nextrom.c
/* $NetBSD: nextrom.c,v 1.20 2005/12/11 12:18:29 christos Exp $ */
/*
* Copyright (c) 1998 Darrin B. Jewell
* 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 Darrin B. Jewell
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nextrom.c,v 1.20 2005/12/11 12:18:29 christos Exp $");
#include "opt_ddb.h"
#include "opt_serial.h"
#include <sys/types.h>
#include <machine/cpu.h>
#include <next68k/next68k/seglist.h>
#include <next68k/next68k/nextrom.h>
#ifdef DDB
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#define ELFSIZE 32
#include <sys/exec_elf.h>
#endif
void next68k_bootargs(unsigned char **);
int mon_getc(void);
int mon_putc(int);
extern char etext[], edata[], end[];
int nsym;
char *ssym, *esym;
volatile struct mon_global *mg;
#define MON(type, off) (*(type *)((u_int) (mg) + off))
#define RELOC(v, t) (*((t *)((u_int)&(v) + NEXT_RAMBASE)))
#define MONRELOC(type, off) \
(*(volatile type *)((u_int) RELOC(mg,volatile struct mon_global *) + off))
typedef int (*getcptr)(void);
typedef int (*putcptr)(int);
/*
* Print a string on the rom console before the MMU is turned on
*/
/* #define DISABLE_ROM_PRINT 1 */
#ifdef DISABLE_ROM_PRINT
#define ROM_PUTC(c) /* nop */
#define ROM_PUTS(xs) /* nop */
#define ROM_PUTX(v) /* nop */
#else
#define ROM_PUTC(c) \
(*MONRELOC(putcptr,MG_putc))(c)
#define ROM_PUTS(xs) \
do { volatile const char *_s = xs + NEXT_RAMBASE; \
while(_s && *_s) (*MONRELOC(putcptr,MG_putc))(*_s++); \
} while(0)
/* Print a hex byte on the rom console */
#if 1
static char romprint_hextable[] = "0123456789abcdef@";
#define ROM_PUTX(v) \
do { \
(*MONRELOC(putcptr,MG_putc)) \
((romprint_hextable+NEXT_RAMBASE)[((v)>>4)&0xf]); \
(*MONRELOC(putcptr,MG_putc)) \
((romprint_hextable+NEXT_RAMBASE)[(v)&0xf]); \
} while(0);
#else
#define lookup_hex(v) ((v)>9?('a'+(v)-0xa):('0'+(v)))
#define ROM_PUTX(v) \
do { \
(*MONRELOC(putcptr,MG_putc)) \
(lookup_hex(((v)>>4)&0xf)); \
(*MONRELOC(putcptr,MG_putc)) \
(lookup_hex((v)&0xf)); \
} while(0);
#endif
#endif
u_char rom_enetaddr[6];
u_char rom_boot_dev[20];
u_char rom_boot_arg[20];
u_char rom_boot_info[20];
u_char rom_boot_file[20];
u_char rom_bootfile[MG_boot_how-MG_bootfile];
char rom_machine_type;
u_char *rom_return_sp;
u_int rom_mon_stack;
u_char rom_image[0x2000];
vm_offset_t rom_image_base;
u_int rom_vbr;
u_int rom_intrmask;
u_int rom_intrstat;
paddr_t rom_reboot_vect;
int turbo;
void
next68k_bootargs(unsigned char **args)
{
#ifdef DDB
int i;
Elf_Ehdr *ehdr;
Elf_Shdr *shp;
vaddr_t minsym, maxsym;
char *reloc_end;
const char *reloc_elfmag;
#endif
RELOC(rom_return_sp,u_char *) = args[0];
RELOC(mg,char *) = args[1];
ROM_PUTS("Welcome to NetBSD/next68k\r\n");
#ifdef DDB
/*
* Check the ELF headers.
*/
reloc_end = end + NEXT_RAMBASE;
reloc_elfmag = ELFMAG + NEXT_RAMBASE;
ehdr = (void *)reloc_end;
for (i = 0; i < SELFMAG; i++) {
if (ehdr->e_ident[i] != reloc_elfmag[i]) {
ROM_PUTS("save_symtab: bad ELF magic\n");
goto ddbdone;
}
}
if (ehdr->e_ident[EI_CLASS] != ELFCLASS32) {
ROM_PUTS("save_symtab: bad ELF magic\n");
goto ddbdone;
}
/*
* Find the end of the symbols and strings.
*/
maxsym = 0;
minsym = ~maxsym;
shp = (Elf_Shdr *)(reloc_end + ehdr->e_shoff);
for (i = 0; i < ehdr->e_shnum; i++) {
if (shp[i].sh_type != SHT_SYMTAB &&
shp[i].sh_type != SHT_STRTAB) {
continue;
}
minsym = MIN(minsym, (vaddr_t)reloc_end + shp[i].sh_offset);
maxsym = MAX(maxsym, (vaddr_t)reloc_end + shp[i].sh_offset +
shp[i].sh_size);
}
RELOC(nsym, int) = 1;
RELOC(ssym, char *) = end;
RELOC(esym, char *) = (char *)maxsym - NEXT_RAMBASE;
ROM_PUTS("nsym ");
ROM_PUTX(RELOC(nsym, int));
ROM_PUTS(" ssym ");
ROM_PUTX((vaddr_t)RELOC(ssym, char *));
ROM_PUTS(" esym ");
ROM_PUTX((vaddr_t)RELOC(esym, char *));
ROM_PUTS("\r\n");
ddbdone:
#endif
ROM_PUTS("Constructing the segment list...\r\n");
ROM_PUTS("machine type = 0x");
ROM_PUTX(MONRELOC(char,MG_machine_type));
ROM_PUTS("\r\nboard rev = 0x");
ROM_PUTX(MONRELOC(char,MG_board_rev));
ROM_PUTS("\r\ndmachip = 0x");
ROM_PUTX(MONRELOC(int,MG_dmachip)>>24&0xff);
ROM_PUTX(MONRELOC(int,MG_dmachip)>>16&0xff);
ROM_PUTX(MONRELOC(int,MG_dmachip)>>8&0xff);
ROM_PUTX(MONRELOC(int,MG_dmachip)>>0&0xff);
ROM_PUTS("\r\ndiskchip = 0x");
ROM_PUTX(MONRELOC(int,MG_diskchip)>>24&0xff);
ROM_PUTX(MONRELOC(int,MG_diskchip)>>16&0xff);
ROM_PUTX(MONRELOC(int,MG_diskchip)>>8&0xff);
ROM_PUTX(MONRELOC(int,MG_diskchip)>>0&0xff);
ROM_PUTS("\r\n");
/* Construct the segment list */
{
u_int msize16;
u_int msize4;
u_int msize1;
int ix;
int j = 0;
char mach;
if (MONRELOC(char,MG_machine_type) == NeXT_X15) {
msize16 = 0x1000000;
msize4 = 0x400000;
msize1 = 0x100000;
ROM_PUTS("Looks like a NeXT_X15\r\n");
} else if (MONRELOC(char,MG_machine_type) == NeXT_WARP9C) {
msize16 = 0x800000;
msize4 = 0x200000;
msize1 = 0x80000; /* ? */
ROM_PUTS("Looks like a NeXT_WARP9C\r\n");
} else if (MONRELOC(char,MG_machine_type) == NeXT_WARP9) {
msize16 = 0x1000000;
msize4 = 0x400000;
msize1 = 0x100000;
ROM_PUTS("Looks like a NeXT_WARP9\r\n");
} else if (MONRELOC(char,MG_machine_type) == NeXT_TURBO_COLOR) {
msize16 = 0x2000000;
msize4 = 0x800000;
msize1 = 0x200000;
ROM_PUTS("Looks like a NeXT_TURBO_COLOR\r\n");
} else if (MONRELOC(char,MG_machine_type) == NeXT_TURBO_MONO) {
msize16 = 0x2000000;
msize4 = 0x800000;
msize1 = 0x200000;
ROM_PUTS("Looks like a NeXT_TURBO_MONO\r\n");
} else {
msize16 = 0x100000;
msize4 = 0x100000;
msize1 = 0x100000;
ROM_PUTS("Unrecognized machine_type\r\n");
}
mach = MONRELOC(char, MG_machine_type);
RELOC(rom_machine_type, char) = mach;
if (mach == NeXT_TURBO_MONO || mach == NeXT_TURBO_COLOR)
RELOC(turbo, int) = 1;
else
RELOC(turbo, int) = 0;
for (ix=0;ix<N_SIMM;ix++) {
ROM_PUTS("Memory bank 0x");
ROM_PUTX(ix);
ROM_PUTS(" has value 0x");
ROM_PUTX(MONRELOC(char,MG_simm+ix))
ROM_PUTS("\r\n");
if ((MONRELOC(char,MG_simm+ix) & SIMM_SIZE) != SIMM_SIZE_EMPTY) {
RELOC(phys_seg_list[j].ps_start, vm_offset_t)
= NEXT_RAMBASE+(ix*msize16);
}
if ((MONRELOC(char,MG_simm+ix) & SIMM_SIZE) == SIMM_SIZE_16MB) {
RELOC(phys_seg_list[j].ps_end, vm_offset_t) =
RELOC(phys_seg_list[j].ps_start, vm_offset_t) +
msize16;
j++;
}
if ((MONRELOC(char,MG_simm+ix) & SIMM_SIZE) == SIMM_SIZE_4MB) {
RELOC(phys_seg_list[j].ps_end, vm_offset_t) =
RELOC(phys_seg_list[j].ps_start, vm_offset_t) +
msize4;
j++;
}
if ((MONRELOC(char,MG_simm+ix) & SIMM_SIZE) == SIMM_SIZE_1MB) {
RELOC(phys_seg_list[j].ps_end, vm_offset_t) =
RELOC(phys_seg_list[j].ps_start, vm_offset_t) +
msize1;
j++;
}
}
/* The NeXT ROM or something appears to reserve the very
* top of memory
*/
RELOC(phys_seg_list[j-1].ps_end, vm_offset_t) -= 0x2000;
RELOC(rom_image_base, vm_offset_t) = RELOC(phys_seg_list[j-1].ps_end, vm_offset_t);
/* pmap is unhappy if it is not null terminated */
for(;j<MAX_PHYS_SEGS;j++) {
RELOC(phys_seg_list[j].ps_start, vm_offset_t) = 0;
RELOC(phys_seg_list[j].ps_end, vm_offset_t) = 0;
}
}
{
int j;
ROM_PUTS("Memory segments found:\r\n");
for (j=0;RELOC(phys_seg_list[j].ps_start, vm_offset_t);j++) {
ROM_PUTS("\t0x");
ROM_PUTX((RELOC(phys_seg_list[j].ps_start, vm_offset_t)>>24)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_start, vm_offset_t)>>16)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_start, vm_offset_t)>>8)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_start, vm_offset_t)>>0)&0xff);
ROM_PUTS(" - 0x");
ROM_PUTX((RELOC(phys_seg_list[j].ps_end, vm_offset_t)>>24)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_end, vm_offset_t)>>16)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_end, vm_offset_t)>>8)&0xff);
ROM_PUTX((RELOC(phys_seg_list[j].ps_end, vm_offset_t)>>0)&0xff);
ROM_PUTS("\r\n");
}
}
/* Read the ethernet address from rom, this should be done later
* in device driver somehow.
*/
{
int j;
ROM_PUTS("Ethernet address: ");
for(j=0;j<6;j++) {
RELOC(rom_enetaddr[j], u_char) = MONRELOC(u_char *, MG_clientetheraddr)[j];
ROM_PUTX(RELOC(rom_enetaddr[j],u_char));
if (j < 5) ROM_PUTS(":");
}
ROM_PUTS("\r\n");
}
/* Read the boot args
*/
{
int j;
for(j=0;j<sizeof(rom_bootfile);j++) {
RELOC(rom_bootfile[j], u_char) = MONRELOC(u_char, MG_bootfile+j);
}
ROM_PUTS("rom bootdev: ");
for(j=0;j<sizeof(rom_boot_dev);j++) {
RELOC(rom_boot_dev[j], u_char) = MONRELOC(u_char *, MG_boot_dev)[j];
ROM_PUTC(RELOC(rom_boot_dev[j], u_char));
if (MONRELOC(u_char *, MG_boot_dev)[j] == '\0') break;
}
RELOC(rom_boot_dev[sizeof(rom_boot_dev)-1], u_char) = 0;
ROM_PUTS("\r\nrom bootarg: ");
for(j=0;j<sizeof(rom_boot_arg);j++) {
RELOC(rom_boot_arg[j], u_char) = MONRELOC(u_char *, MG_boot_arg)[j];
ROM_PUTC(RELOC(rom_boot_arg[j], u_char));
if (MONRELOC(u_char *, MG_boot_arg)[j] == '\0') break;
}
RELOC(rom_boot_arg[sizeof(rom_boot_arg)-1], u_char) = 0;
ROM_PUTS("\r\nrom bootinfo: ");
for(j=0;j<sizeof(rom_boot_info);j++) {
RELOC(rom_boot_info[j], u_char) = MONRELOC(u_char *, MG_boot_info)[j];
ROM_PUTC(RELOC(rom_boot_info[j], u_char));
if (MONRELOC(u_char *, MG_boot_info)[j] == '\0') break;
}
RELOC(rom_boot_info[sizeof(rom_boot_info)-1], u_char) = 0;
ROM_PUTS("\r\nrom bootfile: ");
for(j=0;j<sizeof(rom_boot_file);j++) {
RELOC(rom_boot_file[j], u_char) = MONRELOC(u_char *, MG_boot_file)[j];
ROM_PUTC(RELOC(rom_boot_file[j], u_char));
if (MONRELOC(u_char *, MG_boot_file)[j] == '\0') break;
}
RELOC(rom_boot_file[sizeof(rom_boot_file)-1], u_char) = 0;
ROM_PUTS("\r\n");
RELOC(rom_mon_stack, u_int) = MONRELOC(u_int, MG_mon_stack);
RELOC(rom_vbr, u_int) = MONRELOC(u_int, MG_vbr);
RELOC(rom_reboot_vect, paddr_t) = MONRELOC(paddr_t *, MG_vbr)[45]; /* trap #13 */
for(j=0;j<sizeof(rom_image);j++) {
RELOC(rom_image[j], u_char) = *(u_char *)(RELOC(rom_image_base, vm_offset_t) + j);
}
}
RELOC(rom_intrmask, u_int) = MONRELOC(u_int, MG_intrmask);
RELOC(rom_intrstat, u_int) = MONRELOC(u_int, MG_intrstat);
ROM_PUTS("intrmask: ");
ROM_PUTX((RELOC(rom_intrmask, u_int)>>24)&0xff);
ROM_PUTX((RELOC(rom_intrmask, u_int)>>16)&0xff);
ROM_PUTX((RELOC(rom_intrmask, u_int)>>8)&0xff);
ROM_PUTX((RELOC(rom_intrmask, u_int)>>0)&0xff);
ROM_PUTS("\r\nintrstat: ");
ROM_PUTX((RELOC(rom_intrstat, u_int)>>24)&0xff);
ROM_PUTX((RELOC(rom_intrstat, u_int)>>16)&0xff);
ROM_PUTX((RELOC(rom_intrstat, u_int)>>8)&0xff);
ROM_PUTX((RELOC(rom_intrstat, u_int)>>0)&0xff);
ROM_PUTS("\r\n");
/* RELOC(rom_intrmask, u_int) = 0x02007800; */
/* RELOC(rom_intrstat, u_int) = 0x02007000; */
#ifdef SERCONSOLE
ROM_PUTS("Check serial port A for console.\r\n");
#endif
}