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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/v86bios/main.c')
-rw-r--r--board/MAI/bios_emulator/scitech/src/v86bios/main.c616
1 files changed, 0 insertions, 616 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/v86bios/main.c b/board/MAI/bios_emulator/scitech/src/v86bios/main.c
deleted file mode 100644
index 15f91150f8..0000000000
--- a/board/MAI/bios_emulator/scitech/src/v86bios/main.c
+++ /dev/null
@@ -1,616 +0,0 @@
-/*
- * Copyright 1999 Egbert Eich
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the authors not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. The authors makes no representations
- * about the suitability of this software for any purpose. It is provided
- * "as is" without express or implied warranty.
- *
- * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-#define DELETE
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <string.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <sys/stat.h>
-#if defined(__alpha__) || defined (__ia64__)
-#include <sys/io.h>
-#elif defined(HAVE_SYS_PERM)
-#include <sys/perm.h>
-#endif
-#include "debug.h"
-#include "v86bios.h"
-#include "pci.h"
-#include "AsmMacros.h"
-
-#define SIZE 0x100000
-#define VRAM_START 0xA0000
-#define VRAM_SIZE 0x1FFFF
-#define V_BIOS_SIZE 0x1FFFF
-#define BIOS_START 0x7C00 /* default BIOS entry */
-
-/*CARD8 code[] = { 0xb8 , 0xf0 , 0xf0, 0xf4 }; */
-#define VB_X(x) (V_BIOS >> x) & 0xFF
-CARD8 code[] = { 0x9a, 0x03, 0x00, 0x00, VB_X(12), 0xf4 };
-/*CARD8 code[] = { 0x9a, 0x03, 0x00, 0x00, VB_X(12), 0xb8, 0x03, 0x00, */
-/*0xcd, 0x10, 0xf4 }; */
-/*CARD8 code[] = { 0xb8 , 0xf0 , 0xf0 ,0xf4 }; */
-
-static void sig_handler(int);
-static int map(void);
-static void unmap(void);
-static void bootBIOS(CARD16 ax);
-static int map_vram(void);
-static void unmap_vram(void);
-static int copy_vbios(void);
-static int copy_sys_bios(void);
-static void save_bios_to_file(void);
-static int setup_system_bios(void);
-static void setup_int_vect(void);
-static int chksum(CARD8 *start);
-static void setup_bios_regs(i86biosRegsPtr regs, CARD32 ax);
-
-void loadCodeToMem(unsigned char *ptr, CARD8 *code);
-void dprint(unsigned long start, unsigned long size);
-
-static int vram_mapped = 0;
-static CARD8 save_msr;
-static CARD8 save_pos102;
-static CARD8 save_vse;
-static CARD8 save_46e8;
-console Console;
-struct config Config;
-
-
-int
-main(void)
-{
- int Active_is_Pci = 0;
-#ifdef DELETE
- Config.PrintPort = PRINT_PORT;
- Config.IoStatistics = IO_STATISTICS;
- Config.PrintIrq = PRINT_IRQ;
- Config.PrintPci = PRINT_PCI;
- Config.ShowAllDev = SHOW_ALL_DEV;
- Config.PrintIp = PRINT_IP;
- Config.SaveBios = SAVE_BIOS;
- Config.Trace = TRACE;
- Config.ConfigActiveOnly = CONFIG_ACTIVE_ONLY;
- Config.ConfigActiveDevice = CONFIG_ACTIVE_DEVICE;
- Config.MapSysBios = MAP_SYS_BIOS;
- Config.Resort = RESORT;
- Config.FixRom = FIX_ROM;
- Config.NoConsole = NO_CONSOLE;
- Config.Verbose = VERBOSE;
-
- if (!map())
- exit(1);
-
- if (!setup_system_bios())
- exit(1);
-
- iopl(3);
- setup_io();
-
- scan_pci();
- if (!CurrentPci && !Config.ConfigActiveDevice && !Config.ConfigActiveOnly)
- exit (1);
-#endif
- Console = open_console();
-
- if (Config.ConfigActiveOnly) {
- CARD16 ax;
- int activePci = 0;
- int error = 0;
-
- while (CurrentPci) {
- if (CurrentPci->active) {
- activePci = 1;
- if (!(mapPciRom(NULL) && chksum((CARD8*)V_BIOS)))
- error = 1;
- break;
- }
- CurrentPci = CurrentPci->next;
- }
- ax = ((CARD16)(CurrentPci->bus) << 8)
- | (CurrentPci->dev << 3) | (CurrentPci->func & 0x7);
- P_printf("ax: 0x%x\n",ax);
- setup_int_vect();
- if (!error && (activePci || copy_vbios())) {
-
- if (Config.SaveBios) save_bios_to_file();
- if (map_vram()) {
- printf("initializing ISA\n");
- bootBIOS(0);
- }
- }
- unmap_vram();
- sleep(1);
- } else {
- /* disable primary card */
- save_msr = inb(0x3CC);
- save_vse = inb(0x3C3);
- save_46e8 = inb(0x46e8);
- save_pos102 = inb(0x102);
-
- signal(2,sig_handler);
- signal(11,sig_handler);
-
- outb(0x3C2,~(CARD8)0x03 & save_msr);
- outb(0x3C3,~(CARD8)0x01 & save_vse);
- outb(0x46e8, ~(CARD8)0x08 & save_46e8);
- outb(0x102, ~(CARD8)0x01 & save_pos102);
-
- pciVideoDisable();
-
- while (CurrentPci) {
- CARD16 ax;
-
- if (CurrentPci->active) {
- Active_is_Pci = 1;
- if (!Config.ConfigActiveDevice) {
- CurrentPci = CurrentPci->next;
- continue;
- }
- }
-
- EnableCurrent();
-
- if (CurrentPci->active) {
- outb(0x102, save_pos102);
- outb(0x46e8, save_46e8);
- outb(0x3C3, save_vse);
- outb(0x3C2, save_msr);
- }
-
- /* clear interrupt vectors */
- setup_int_vect();
-
- ax = ((CARD16)(CurrentPci->bus) << 8)
- | (CurrentPci->dev << 3) | (CurrentPci->func & 0x7);
- P_printf("ax: 0x%x\n",ax);
-
- if (!((mapPciRom(NULL) && chksum((CARD8*)V_BIOS))
- || (CurrentPci->active && copy_vbios()))) {
- CurrentPci = CurrentPci->next;
- continue;
- }
- if (!map_vram()) {
- CurrentPci = CurrentPci->next;
- continue;
- }
- if (Config.SaveBios) save_bios_to_file();
- printf("initializing PCI bus: %i dev: %i func: %i\n",CurrentPci->bus,
- CurrentPci->dev,CurrentPci->func);
- bootBIOS(ax);
- unmap_vram();
-
- CurrentPci = CurrentPci->next;
- }
-
- /* We have an ISA device - configure if requested */
- if (!Active_is_Pci && Config.ConfigActiveDevice) {
- pciVideoDisable();
-
- outb(0x102, save_pos102);
- outb(0x46e8, save_46e8);
- outb(0x3C3, save_vse);
- outb(0x3C2, save_msr);
-
- setup_int_vect();
- if (copy_vbios()) {
-
- if (Config.SaveBios) save_bios_to_file();
- if (map_vram()) {
- printf("initializing ISA\n");
- bootBIOS(0);
- }
- }
-
- unmap_vram();
- sleep(1);
- }
-
- pciVideoRestore();
-
- outb(0x102, save_pos102);
- outb(0x46e8, save_46e8);
- outb(0x3C3, save_vse);
- outb(0x3C2, save_msr);
- }
-
- close_console(Console);
-#ifdef DELETE
- iopl(0);
- unmap();
-
- printf("done !\n");
-#endif
- if (Config.IoStatistics)
- io_statistics();
-#ifdef DELETE
- exit(0);
-#endif
-}
-
-int
-map(void)
-{
- void* mem;
-
- mem = mmap(0, (size_t)SIZE,
- PROT_EXEC | PROT_READ | PROT_WRITE,
- MAP_FIXED | MAP_PRIVATE | MAP_ANON,
- -1, 0 );
- if (mem != 0) {
- perror("anonymous map");
- return (0);
- }
- memset(mem,0,SIZE);
-
- loadCodeToMem((unsigned char *) BIOS_START, code);
- return (1);
-}
-
-static void
-unmap(void)
-{
- munmap(0,SIZE);
-}
-
-static void
-bootBIOS(CARD16 ax)
-{
- i86biosRegs bRegs;
-#ifdef V86BIOS_DEBUG
- printf("starting BIOS\n");
-#endif
- setup_bios_regs(&bRegs, ax);
- do_x86(BIOS_START,&bRegs);
-#ifdef V86BIOS_DEBUG
- printf("done\n");
-#endif
-}
-
-static int
-map_vram(void)
-{
- int mem_fd;
-
-#ifdef __ia64__
- if ((mem_fd = open(MEM_FILE,O_RDWR | O_SYNC))<0)
-#else
- if ((mem_fd = open(MEM_FILE,O_RDWR))<0)
-#endif
- {
- perror("opening memory");
- return 0;
- }
-
-#ifndef __alpha__
- if (mmap((void *) VRAM_START, (size_t) VRAM_SIZE,
- PROT_EXEC | PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED,
- mem_fd, VRAM_START) == (void *) -1)
-#else
- if (!_bus_base()) sparse_shift = 7; /* Uh, oh, JENSEN... */
- if (!_bus_base_sparse()) sparse_shift = 0;
- if ((vram_map = mmap(0,(size_t) (VRAM_SIZE << sparse_shift),
- PROT_READ | PROT_WRITE,
- MAP_SHARED,
- mem_fd, (VRAM_START << sparse_shift)
- | _bus_base_sparse())) == (void *) -1)
-#endif
- {
- perror("mmap error in map_hardware_ram");
- close(mem_fd);
- return (0);
- }
- vram_mapped = 1;
- close(mem_fd);
- return (1);
-}
-
-static void
-unmap_vram(void)
-{
- if (!vram_mapped) return;
-
- munmap((void*)VRAM_START,VRAM_SIZE);
- vram_mapped = 0;
-}
-
-static int
-copy_vbios(void)
-{
- int mem_fd;
- unsigned char *tmp;
- int size;
-
- if ((mem_fd = open(MEM_FILE,O_RDONLY))<0) {
- perror("opening memory");
- return (0);
- }
-
- if (lseek(mem_fd,(off_t) V_BIOS, SEEK_SET) != (off_t) V_BIOS) {
- fprintf(stderr,"Cannot lseek\n");
- goto Error;
- }
- tmp = (unsigned char *)malloc(3);
- if (read(mem_fd, (char *)tmp, (size_t) 3) != (size_t) 3) {
- fprintf(stderr,"Cannot read\n");
- goto Error;
- }
- if (lseek(mem_fd,(off_t) V_BIOS,SEEK_SET) != (off_t) V_BIOS)
- goto Error;
-
- if (*tmp != 0x55 || *(tmp+1) != 0xAA ) {
-#ifdef DEBUG
- dprint((unsigned long)tmp,0x100);
-#endif
- fprintf(stderr,"No bios found at: 0x%x\n",V_BIOS);
- goto Error;
- }
- size = *(tmp+2) * 512;
-
- if (read(mem_fd, (char *)V_BIOS, (size_t) size) != (size_t) size) {
- fprintf(stderr,"Cannot read\n");
- goto Error;
- }
- free(tmp);
- close(mem_fd);
- if (!chksum((CARD8)V_BIOS))
- return (0);
-
- return (1);
-
-Error:
- perror("v_bios");
- close(mem_fd);
- return (0);
-}
-
-static int
-copy_sys_bios(void)
-{
-#define SYS_BIOS 0xF0000
- int mem_fd;
-
- if ((mem_fd = open(MEM_FILE,O_RDONLY))<0) {
- perror("opening memory");
- return (0);
- }
-
- if (lseek(mem_fd,(off_t) SYS_BIOS,SEEK_SET) != (off_t) SYS_BIOS)
- goto Error;
- if (read(mem_fd, (char *)SYS_BIOS, (size_t) 0xFFFF) != (size_t) 0xFFFF)
- goto Error;
-
- close(mem_fd);
- return (1);
-
-Error:
- perror("sys_bios");
- close(mem_fd);
- return (0);
-}
-
-void
-loadCodeToMem(unsigned char *ptr, CARD8 code[])
-{
- int i;
- CARD8 val;
-
- for ( i=0;;i++) {
- val = code[i];
- *ptr++ = val;
- if (val == 0xf4) break;
- }
- return;
-}
-
-void
-dprint(unsigned long start, unsigned long size)
-{
- int i,j;
- char *c = (char *)start;
-
- for (j = 0; j < (size >> 4); j++) {
- char *d = c;
- printf("\n0x%lx: ",(unsigned long)c);
- for (i = 0; i<16; i++)
- printf("%2.2x ",(unsigned char) (*(c++)));
- c = d;
- for (i = 0; i<16; i++) {
- printf("%c",((((CARD8)(*c)) > 32) && (((CARD8)(*c)) < 128)) ?
- (unsigned char) (*(c)): '.');
- c++;
- }
- }
- printf("\n");
-}
-
-static void
-save_bios_to_file(void)
-{
- static int num = 0;
- int size, count;
- char file_name[256];
- int fd;
-
- sprintf(file_name,"bios_%i.fil",num);
- if ((fd = open(file_name,O_WRONLY | O_CREAT | O_TRUNC,00644)) == -1)
- return;
- size = (*(unsigned char*)(V_BIOS + 2)) * 512;
-#ifdef V86BIOS_DEBUG
- dprint(V_BIOS,20);
-#endif
- if ((count = write(fd,(void *)(V_BIOS),size)) != size)
- fprintf(stderr,"only saved %i of %i bytes\n",size,count);
- num++;
-}
-
-static void
-sig_handler(int unused)
-{
- fflush(stdout);
- fflush(stderr);
-
- /* put system back in a save state */
- unmap_vram();
- pciVideoRestore();
- outb(0x102, save_pos102);
- outb(0x46e8, save_46e8);
- outb(0x3C3, save_vse);
- outb(0x3C2, save_msr);
-
- close_console(Console);
- iopl(0);
- unmap();
-
- exit(1);
-}
-
-/*
- * For initialization we just pass ax to the BIOS.
- * PCI BIOSes need this. All other register are set 0.
- */
-static void setup_bios_regs(i86biosRegsPtr regs, CARD32 ax)
-{
- regs->ax = ax;
- regs->bx = 0;
- regs->cx = 0;
- regs->dx = 0;
- regs->es = 0;
- regs->di = 0;
-}
-
-/*
- * here we are really paranoid about faking a "real"
- * BIOS. Most of this information was pulled from
- * dosem.
- */
-static void
-setup_int_vect(void)
-{
- const CARD16 cs = 0x0000;
- const CARD16 ip = 0x0;
- int i;
-
- /* let the int vects point to the SYS_BIOS seg */
- for (i=0; i<0x80; i++) {
- ((CARD16*)0)[i<<1] = ip;
- ((CARD16*)0)[(i<<1)+1] = cs;
- }
- /* video interrupts default location */
- ((CARD16*)0)[(0x42<<1)+1] = 0xf000;
- ((CARD16*)0)[0x42<<1] = 0xf065;
- ((CARD16*)0)[(0x10<<1)+1] = 0xf000;
- ((CARD16*)0)[0x10<<1] = 0xf065;
- /* video param table default location (int 1d) */
- ((CARD16*)0)[(0x1d<<1)+1] = 0xf000;
- ((CARD16*)0)[0x1d<<1] = 0xf0A4;
- /* font tables default location (int 1F) */
- ((CARD16*)0)[(0x1f<<1)+1] = 0xf000;
- ((CARD16*)0)[0x1f<<1] = 0xfa6e;
-
- /* int 11 default location */
- ((CARD16*)0)[(0x11<1)+1] = 0xf000;
- ((CARD16*)0)[0x11<<1] = 0xf84d;
- /* int 12 default location */
- ((CARD16*)0)[(0x12<<1)+1] = 0xf000;
- ((CARD16*)0)[0x12<<1] = 0xf841;
- /* int 15 default location */
- ((CARD16*)0)[(0x15<<1)+1] = 0xf000;
- ((CARD16*)0)[0x15<<1] = 0xf859;
- /* int 1A default location */
- ((CARD16*)0)[(0x1a<<1)+1] = 0xf000;
- ((CARD16*)0)[0x1a<<1] = 0xff6e;
- /* int 05 default location */
- ((CARD16*)0)[(0x05<<1)+1] = 0xf000;
- ((CARD16*)0)[0x05<<1] = 0xff54;
- /* int 08 default location */
- ((CARD16*)0)[(0x8<<1)+1] = 0xf000;
- ((CARD16*)0)[0x8<<1] = 0xfea5;
- /* int 13 default location (fdd) */
- ((CARD16*)0)[(0x13<<1)+1] = 0xf000;
- ((CARD16*)0)[0x13<<1] = 0xec59;
- /* int 0E default location */
- ((CARD16*)0)[(0xe<<1)+1] = 0xf000;
- ((CARD16*)0)[0xe<<1] = 0xef57;
- /* int 17 default location */
- ((CARD16*)0)[(0x17<<1)+1] = 0xf000;
- ((CARD16*)0)[0x17<<1] = 0xefd2;
- /* fdd table default location (int 1e) */
- ((CARD16*)0)[(0x1e<<1)+1] = 0xf000;
- ((CARD16*)0)[0x1e<<1] = 0xefc7;
-}
-
-static int
-setup_system_bios(void)
-{
- char *date = "06/01/99";
- char *eisa_ident = "PCI/ISA";
-
-#if MAP_SYS_BIOS
- if (!copy_sys_bios()) return 0;
- return 1;
-#endif
-/* memset((void *)0xF0000,0xf4,0xfff7); */
-
- /*
- * we trap the "industry standard entry points" to the BIOS
- * and all other locations by filling them with "hlt"
- * TODO: implement hlt-handler for these
- */
- memset((void *)0xF0000,0xf4,0x10000);
-
- /*
- * TODO: we should copy the fdd table (0xfec59-0xfec5b)
- * the video parameter table (0xf0ac-0xf0fb)
- * and the font tables (0xfa6e-0xfe6d)
- * from the original bios here
- */
-
- /* set bios date */
- strcpy((char *)0xFFFF5,date);
- /* set up eisa ident string */
- strcpy((char *)0xFFFD9,eisa_ident);
- /* write system model id for IBM-AT */
- ((char *)0)[0xFFFFE] = 0xfc;
-
- return 1;
-}
-
-static int
-chksum(CARD8 *start)
-{
- CARD16 size;
- CARD8 val = 0;
- int i;
-
- size = *(start+2) * 512;
- for (i = 0; i<size; i++)
- val += *(start + i);
-
- if (!val)
- return 1;
-
- fprintf(stderr,"BIOS cksum wrong!\n");
- return 0;
-}
generated by cgit (git 2.34.1) at 2024-12-28 07:21:29 +0000