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Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/v86bios/cbios.c')
-rw-r--r--board/MAI/bios_emulator/scitech/src/v86bios/cbios.c415
1 files changed, 0 insertions, 415 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/v86bios/cbios.c b/board/MAI/bios_emulator/scitech/src/v86bios/cbios.c
deleted file mode 100644
index 6b12dff4f9..0000000000
--- a/board/MAI/bios_emulator/scitech/src/v86bios/cbios.c
+++ /dev/null
@@ -1,415 +0,0 @@
-#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>
-#include <getopt.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 */
-#define BIOS_MEM 0x600
-
-CARD8 code[] = { 0xcd, 0x10, 0xf4 };
-struct config Config;
-
-static int map(void);
-static void unmap(void);
-static void runBIOS(int argc, char **argv);
-static int map_vram(void);
-static void unmap_vram(void);
-static int copy_vbios(memType base);
-static int copy_sys_bios(void);
-static CARD32 setup_int_vect(void);
-static void update_bios_vars(void);
-static int chksum(CARD8 *start);
-static void setup_bios_regs(i86biosRegsPtr regs, int argc, char **argv);
-static void print_regs(i86biosRegsPtr regs);
-void dprint(unsigned long start, unsigned long size);
-
-void loadCodeToMem(unsigned char *ptr, CARD8 *code);
-
-static int vram_mapped = 0;
-static char* bios_var;
-
-
-int
-main(int argc,char **argv)
-{
- CARD32 vbios_base;
-
- 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 (!copy_sys_bios())
- exit(1);
- if (!(vbios_base = setup_int_vect()))
- exit(1);
- if (!map_vram())
- exit(1);
- if (!copy_vbios(vbios_base))
- exit(1);
-
- iopl(3);
- setup_io();
- runBIOS(argc,argv);
- update_bios_vars();
- unmap_vram();
- iopl(0);
- unmap();
- printf("done !\n");
- exit (1);
-}
-
-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 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);
-}
-
-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 int
-copy_vbios(memType v_base)
-{
- 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_base, SEEK_SET) != (off_t) v_base) {
- 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_base,SEEK_SET) != (off_t) v_base)
- goto Error;
-
- if (*tmp != 0x55 || *(tmp+1) != 0xAA ) {
- fprintf(stderr,"No bios found at: 0x%lx\n",v_base);
- goto Error;
- }
-#ifdef DEBUG
- dprint((unsigned long)tmp,0x100);
-#endif
- size = *(tmp+2) * 512;
-
- if (read(mem_fd, (char *)v_base, (size_t) size) != (size_t) size) {
- fprintf(stderr,"Cannot read\n");
- goto Error;
- }
- free(tmp);
- close(mem_fd);
- if (!chksum((CARD8*)v_base))
- return (0);
-
- return (1);
-
-Error:
- perror("v_bios");
- close(mem_fd);
- return (0);
-}
-
-static void
-unmap(void)
-{
- munmap(0,SIZE);
-}
-
-static void
-unmap_vram(void)
-{
- if (!vram_mapped) return;
-
- munmap((void*)VRAM_START,VRAM_SIZE);
- vram_mapped = 0;
-}
-
-static void
-runBIOS(int argc, char ** argv)
-{
- i86biosRegs bRegs;
-#ifdef V86BIOS_DEBUG
- printf("starting BIOS\n");
-#endif
- setup_bios_regs(&bRegs, argc, argv);
- do_x86(BIOS_START,&bRegs);
- print_regs(&bRegs);
-#ifdef V86BIOS_DEBUG
- printf("done\n");
-#endif
-}
-
-static CARD32
-setup_int_vect(void)
-{
- int mem_fd;
- CARD32 vbase;
- void *map;
-
- if ((mem_fd = open(MEM_FILE,O_RDONLY))<0) {
- perror("opening memory");
- return (0);
- }
-
- if ((map = mmap((void *) 0, (size_t) 0x2000,
- PROT_EXEC | PROT_READ | PROT_WRITE, MAP_SHARED,
- mem_fd, 0)) == (void *)-1) {
- perror("mmap error in map_hardware_ram");
- close(mem_fd);
- return (0);
- }
-
- close(mem_fd);
- memcpy(0,map,BIOS_MEM);
- munmap(map,0x2000);
- /*
- * create a backup copy of the bios variables to write back the
- * modified values
- */
- bios_var = (char *)malloc(BIOS_MEM);
- memcpy(bios_var,0,BIOS_MEM);
-
- vbase = (*((CARD16*)(0x10 << 2) + 1)) << 4;
- fprintf(stderr,"vbase: 0x%x\n",vbase);
- return vbase;
-}
-
-static void
-update_bios_vars(void)
-{
- int mem_fd;
- void *map;
- memType i;
-
-#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;
- }
-
- if ((map = mmap((void *) 0, (size_t) 0x2000,
- PROT_EXEC | PROT_READ | PROT_WRITE, MAP_SHARED,
- mem_fd, 0)) == (void *)-1) {
- perror("mmap error in map_hardware_ram");
- close(mem_fd);
- return;
- }
-
- for (i = 0; i < BIOS_MEM; i++) {
- if (bios_var[i] != *(CARD8*)i)
- *((CARD8*)map + i) = *(CARD8*)i;
- }
-
- munmap(map,0x2000);
- close(mem_fd);
-}
-
-
-static void
-setup_bios_regs(i86biosRegsPtr regs, int argc, char **argv)
-{
- int c;
-
- regs->ax = 0;
- regs->bx = 0;
- regs->cx = 0;
- regs->dx = 0;
- regs->es = 0;
- regs->di = 0;
- opterr = 0;
- while ((c = getopt(argc,argv,"a:b:c:d:e:i:")) != EOF) {
- switch (c) {
- case 'a':
- regs->ax = strtol(optarg,NULL,0);
- break;
- case 'b':
- regs->bx = strtol(optarg,NULL,0);
- break;
- case 'c':
- regs->cx = strtol(optarg,NULL,0);
- break;
- case 'd':
- regs->dx = strtol(optarg,NULL,0);
- break;
- case 'e':
- regs->es = strtol(optarg,NULL,0);
- break;
- case 'i':
- regs->di = strtol(optarg,NULL,0);
- break;
- }
- }
-}
-
-
-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;
-}
-
-static void
-print_regs(i86biosRegsPtr regs)
-{
- printf("ax=%x bx=%x cx=%x dx=%x es=%x di=%x\n",(CARD16)regs->ax,
- (CARD16)regs->bx,(CARD16)regs->cx,(CARD16)regs->dx,
- (CARD16)regs->es,(CARD16)regs->di);
-}
-
-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++) {
- printf ("\n0x%lx: ",(unsigned long)c);
- for (i = 0; i<16; i++)
- printf("%x ",(unsigned char) (*(c++)));
- }
- printf("\n");
-}
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