X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FCart.c;h=a0d38a0bd91ae2a6a569ea1a7e1c9619856b81c6;hb=0b35350da642c6de77de35a226e3692f1841d6e4;hp=1cf8dec79f45963c0fb0d20ef258d2fffe980315;hpb=a9b3ffd3cce011d42652d22f15a4a13dff29b0d7;p=picodrive.git

diff --git a/Pico/Cart.c b/Pico/Cart.c
index 1cf8dec..a0d38a0 100644
--- a/Pico/Cart.c
+++ b/Pico/Cart.c
@@ -15,8 +15,61 @@
 
 static char *rom_exts[] = { "bin", "gen", "smd", "iso" };
 
+void (*PicoCartUnloadHook)(void) = NULL;
+
 void (*PicoCartLoadProgressCB)(int percent) = NULL;
+void (*PicoCDLoadProgressCB)(int percent) = NULL; // handled in Pico/cd/cd_file.c
+
+static void PicoCartDetect(void);
+
+/* cso struct */
+typedef struct _cso_struct
+{
+  unsigned char in_buff[2*2048];
+  unsigned char out_buff[2048];
+  struct {
+    char          magic[4];
+    unsigned int  unused;
+    unsigned int  total_bytes;
+    unsigned int  total_bytes_high; // ignored here
+    unsigned int  block_size;  // 10h
+    unsigned char ver;
+    unsigned char align;
+    unsigned char reserved[2];
+  } header;
+  unsigned int  fpos_in;  // input file read pointer
+  unsigned int  fpos_out; // pos in virtual decompressed file
+  int block_in_buff;      // block which we have read in in_buff
+  int pad;
+  int index[0];
+}
+cso_struct;
+
+static int uncompress2(void *dest, int destLen, void *source, int sourceLen)
+{
+    z_stream stream;
+    int err;
+
+    stream.next_in = (Bytef*)source;
+    stream.avail_in = (uInt)sourceLen;
+    stream.next_out = dest;
+    stream.avail_out = (uInt)destLen;
+
+    stream.zalloc = NULL;
+    stream.zfree = NULL;
+
+    err = inflateInit2(&stream, -15);
+    if (err != Z_OK) return err;
 
+    err = inflate(&stream, Z_FINISH);
+    if (err != Z_STREAM_END) {
+        inflateEnd(&stream);
+        return err;
+    }
+    //*destLen = stream.total_out;
+
+    return inflateEnd(&stream);
+}
 
 pm_file *pm_open(const char *path)
 {
@@ -48,7 +101,7 @@ pm_file *pm_open(const char *path)
 
         ext = zipentry->name+strlen(zipentry->name)-3;
         for (i = 0; i < sizeof(rom_exts)/sizeof(rom_exts[0]); i++)
-          if (!strcasecmp(ext, rom_exts[i]) == 0) goto found_rom_zip;
+          if (strcasecmp(ext, rom_exts[i]) == 0) goto found_rom_zip;
       }
 
       /* zipfile given, but nothing found suitable for us inside */
@@ -76,6 +129,64 @@ zip_failed:
       return NULL;
     }
   }
+  else if (ext && strcasecmp(ext, "cso") == 0)
+  {
+    cso_struct *cso = NULL, *tmp = NULL;
+    int size;
+    f = fopen(path, "rb");
+    if (f == NULL)
+      goto cso_failed;
+
+    /* we use our own buffering */
+    setvbuf(f, NULL, _IONBF, 0);
+
+    cso = malloc(sizeof(*cso));
+    if (cso == NULL)
+      goto cso_failed;
+
+    if (fread(&cso->header, 1, sizeof(cso->header), f) != sizeof(cso->header))
+      goto cso_failed;
+
+    if (strncmp(cso->header.magic, "CISO", 4) != 0) {
+      elprintf(EL_STATUS, "cso: bad header");
+      goto cso_failed;
+    }
+
+    if (cso->header.block_size != 2048) {
+      elprintf(EL_STATUS, "cso: bad block size (%u)", cso->header.block_size);
+      goto cso_failed;
+    }
+
+    size = ((cso->header.total_bytes >> 11) + 1)*4 + sizeof(*cso);
+    tmp = realloc(cso, size);
+    if (tmp == NULL)
+      goto cso_failed;
+    cso = tmp;
+    elprintf(EL_STATUS, "allocated %i bytes for CSO struct", size);
+
+    size -= sizeof(*cso); // index size
+    if (fread(cso->index, 1, size, f) != size) {
+      elprintf(EL_STATUS, "cso: premature EOF");
+      goto cso_failed;
+    }
+
+    // all ok
+    cso->fpos_in = ftell(f);
+    cso->fpos_out = 0;
+    cso->block_in_buff = -1;
+    file = malloc(sizeof(*file));
+    if (file == NULL) goto cso_failed;
+    file->file  = f;
+    file->param = cso;
+    file->size  = cso->header.total_bytes;
+    file->type  = PMT_CSO;
+    return file;
+
+cso_failed:
+    if (cso != NULL) free(cso);
+    if (f != NULL) fclose(f);
+    return NULL;
+  }
 
   /* not a zip, treat as uncompressed file */
   f = fopen(path, "rb");
@@ -95,6 +206,7 @@ zip_failed:
   file->size  = ftell(f);
   file->type  = PMT_UNCOMPRESSED;
   fseek(f, 0, SEEK_SET);
+
   return file;
 }
 
@@ -116,6 +228,68 @@ size_t pm_read(void *ptr, size_t bytes, pm_file *stream)
       /* we must reset stream pointer or else next seek/read fails */
       gzrewind(gf);
   }
+  else if (stream->type == PMT_CSO)
+  {
+    cso_struct *cso = stream->param;
+    int read_pos, read_len, out_offs, rret;
+    int block = cso->fpos_out >> 11;
+    int index = cso->index[block];
+    int index_end = cso->index[block+1];
+    unsigned char *out = ptr, *tmp_dst;
+
+    ret = 0;
+    while (bytes != 0)
+    {
+      out_offs = cso->fpos_out&0x7ff;
+      if (out_offs == 0 && bytes >= 2048)
+           tmp_dst = out;
+      else tmp_dst = cso->out_buff;
+
+      read_pos = (index&0x7fffffff) << cso->header.align;
+
+      if (index < 0) {
+        if (read_pos != cso->fpos_in)
+          fseek(stream->file, read_pos, SEEK_SET);
+        rret = fread(tmp_dst, 1, 2048, stream->file);
+        cso->fpos_in = read_pos + rret;
+        if (rret != 2048) break;
+      } else {
+        read_len = (((index_end&0x7fffffff) << cso->header.align) - read_pos) & 0xfff;
+        if (block != cso->block_in_buff)
+        {
+          if (read_pos != cso->fpos_in)
+            fseek(stream->file, read_pos, SEEK_SET);
+          rret = fread(cso->in_buff, 1, read_len, stream->file);
+          cso->fpos_in = read_pos + rret;
+          if (rret != read_len) {
+            elprintf(EL_STATUS, "cso: read failed @ %08x", read_pos);
+            break;
+          }
+          cso->block_in_buff = block;
+        }
+        rret = uncompress2(tmp_dst, 2048, cso->in_buff, read_len);
+        if (rret != 0) {
+          elprintf(EL_STATUS, "cso: uncompress failed @ %08x with %i", read_pos, rret);
+          break;
+        }
+      }
+
+      rret = 2048;
+      if (out_offs != 0 || bytes < 2048) {
+        //elprintf(EL_STATUS, "cso: unaligned/nonfull @ %08x, offs=%i, len=%u", cso->fpos_out, out_offs, bytes);
+        if (bytes < rret) rret = bytes;
+        if (2048 - out_offs < rret) rret = 2048 - out_offs;
+        memcpy(out, tmp_dst + out_offs, rret);
+      }
+      ret += rret;
+      out += rret;
+      cso->fpos_out += rret;
+      bytes -= rret;
+      block++;
+      index = index_end;
+      index_end = cso->index[block+1];
+    }
+  }
   else
     ret = 0;
 
@@ -138,6 +312,17 @@ int pm_seek(pm_file *stream, long offset, int whence)
     }
     return gzseek((gzFile) stream->param, offset, whence);
   }
+  else if (stream->type == PMT_CSO)
+  {
+    cso_struct *cso = stream->param;
+    switch (whence)
+    {
+      case SEEK_CUR: cso->fpos_out += offset; break;
+      case SEEK_SET: cso->fpos_out  = offset; break;
+      case SEEK_END: cso->fpos_out  = cso->header.total_bytes - offset; break;
+    }
+    return cso->fpos_out;
+  }
   else
     return -1;
 }
@@ -159,6 +344,11 @@ int pm_close(pm_file *fp)
     zipfile->fp = NULL; // gzclose() closed it
     closezip(zipfile);
   }
+  else if (fp->type == PMT_CSO)
+  {
+    free(fp->param);
+    fclose(fp->file);
+  }
   else
     ret = EOF;
 
@@ -218,7 +408,6 @@ static int DecodeSmd(unsigned char *data,int len)
 static unsigned char *cd_realloc(void *old, int filesize)
 {
   unsigned char *rom;
-  dprintf("sizeof(mcd_state): %i", sizeof(mcd_state));
   rom=realloc(old, sizeof(mcd_state));
   if (rom) memset(rom+0x20000, 0, sizeof(mcd_state)-0x20000);
   return rom;
@@ -229,14 +418,13 @@ static unsigned char *PicoCartAlloc(int filesize)
   int alloc_size;
   unsigned char *rom;
 
-  if (PicoMCD & 1) return cd_realloc(NULL, filesize);
+  if (PicoAHW & PAHW_MCD) return cd_realloc(NULL, filesize);
 
   alloc_size=filesize+0x7ffff;
   if((filesize&0x3fff)==0x200) alloc_size-=0x200;
   alloc_size&=~0x7ffff; // use alloc size of multiples of 512K, so that memhandlers could be set up more efficiently
   if((filesize&0x3fff)==0x200) alloc_size+=0x200;
   else if(alloc_size-filesize < 4) alloc_size+=4; // padding for out-of-bound exec protection
-  //dprintf("alloc_size: %x\n",  alloc_size);
 
   // Allocate space for the rom plus padding
   rom=(unsigned char *)malloc(alloc_size);
@@ -256,7 +444,7 @@ int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
   // Allocate space for the rom plus padding
   rom=PicoCartAlloc(size);
   if (rom==NULL) {
-    printf("out of memory (wanted %i)\n", size);
+    elprintf(EL_STATUS, "out of memory (wanted %i)", size);
     return 1;
   }
 
@@ -280,19 +468,23 @@ int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
   else
     bytes_read = pm_read(rom,size,f); // Load up the rom
   if (bytes_read <= 0) {
-    printf("read failed\n");
+    elprintf(EL_STATUS, "read failed");
     free(rom);
     return 1;
   }
 
   // maybe we are loading MegaCD BIOS?
-  if (!(PicoMCD&1) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) || !strncmp((char *)rom+0x128, "BOOT", 4))) {
-    PicoMCD |= 1;
+  if (!(PicoAHW & PAHW_MCD) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) ||
+       !strncmp((char *)rom+0x128, "BOOT", 4))) {
+    PicoAHW |= PAHW_MCD;
     rom = cd_realloc(rom, size);
   }
 
   // Check for SMD:
-  if ((size&0x3fff)==0x200) { DecodeSmd(rom,size); size-=0x200; } // Decode and byteswap SMD
+  if (size >= 0x4200 && (size&0x3fff)==0x200 &&
+      ((rom[0x2280] == 'S' && rom[0x280] == 'E') || (rom[0x280] == 'S' && rom[0x2281] == 'E'))) {
+    DecodeSmd(rom,size); size-=0x200; // Decode and byteswap SMD
+  }
   else Byteswap(rom,size); // Just byteswap
 
   if (prom)  *prom=rom;
@@ -301,25 +493,235 @@ int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)
   return 0;
 }
 
-// Insert/remove a cartridge:
+// Insert a cartridge:
 int PicoCartInsert(unsigned char *rom,unsigned int romsize)
 {
   // notaz: add a 68k "jump one op back" opcode to the end of ROM.
   // This will hang the emu, but will prevent nasty crashes.
   // note: 4 bytes are padded to every ROM
-  if(rom != NULL)
+  if (rom != NULL)
     *(unsigned long *)(rom+romsize) = 0xFFFE4EFA; // 4EFA FFFE byteswapped
 
-  SRam.resize=1;
   Pico.rom=rom;
   Pico.romsize=romsize;
 
-  return PicoReset(1);
+  if (SRam.data) {
+    free(SRam.data);
+    SRam.data = NULL;
+  }
+
+  if (PicoCartUnloadHook != NULL) {
+    PicoCartUnloadHook();
+    PicoCartUnloadHook = NULL;
+  }
+
+  PicoAHW &= PAHW_MCD;
+
+  PicoMemResetHooks();
+  PicoDmaHook = NULL;
+  PicoResetHook = NULL;
+  PicoLineHook = NULL;
+  PicoLoadStateHook = NULL;
+  carthw_chunks = NULL;
+
+  PicoMemReset();
+
+  if (!(PicoAHW & PAHW_MCD))
+    PicoCartDetect();
+
+  // setup correct memory map for loaded ROM
+  // call PicoMemReset again due to possible memmap change
+  switch (PicoAHW) {
+    default:
+      elprintf(EL_STATUS|EL_ANOMALY, "starting in unknown hw configuration: %x", PicoAHW);
+    case 0:
+    case PAHW_SVP:  PicoMemSetup(); break;
+    case PAHW_MCD:  PicoMemSetupCD(); break;
+    case PAHW_PICO: PicoMemSetupPico(); break;
+  }
+  PicoMemReset();
+
+  PicoPower();
+  return 0;
+}
+
+int PicoCartUnload(void)
+{
+  if (Pico.rom != NULL) {
+    free(Pico.rom);
+    Pico.rom=NULL;
+  }
+  return 0;
 }
 
-int PicoUnloadCart(unsigned char* romdata)
+static int rom_strcmp(int rom_offset, const char *s1)
 {
-  free(romdata);
+  int i, len = strlen(s1);
+  const char *s_rom = (const char *)Pico.rom + rom_offset;
+  for (i = 0; i < len; i++)
+    if (s1[i] != s_rom[i^1])
+      return 1;
   return 0;
 }
 
+static int name_cmp(const char *name)
+{
+  return rom_strcmp(0x150, name);
+}
+
+/*
+ * various cart-specific things, which can't be handled by generic code
+ * (maybe I should start using CRC for this stuff?)
+ */
+static void PicoCartDetect(void)
+{
+  int sram_size = 0, csum;
+  Pico.m.sram_reg = 0;
+
+  csum = PicoRead32(0x18c) & 0xffff;
+
+  if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')
+  {
+    if (Pico.rom[0x1B2] & 0x40)
+    {
+      // EEPROM
+      SRam.start = PicoRead32(0x1B4) & ~1; // zero address is used for clock by some games
+      SRam.end   = PicoRead32(0x1B8);
+      sram_size  = 0x2000;
+      Pico.m.sram_reg |= 4;
+    } else {
+      // normal SRAM
+      SRam.start = PicoRead32(0x1B4) & ~0xff;
+      SRam.end   = PicoRead32(0x1B8) | 1;
+      sram_size  = SRam.end - SRam.start + 1;
+    }
+    SRam.start &= ~0xff000000;
+    SRam.end   &= ~0xff000000;
+    Pico.m.sram_reg |= 0x10; // SRAM was detected
+  }
+  if (sram_size <= 0)
+  {
+    // some games may have bad headers, like S&K and Sonic3
+    // note: majority games use 0x200000 as starting address, but there are some which
+    // use something else (0x300000 by HardBall '95). Luckily they have good headers.
+    SRam.start = 0x200000;
+    SRam.end   = 0x203FFF;
+    sram_size  = 0x004000;
+  }
+
+  // this game actually doesn't have SRAM, but some weird protection
+  if (rom_strcmp(0x120, "PUGGSY") == 0)
+  {
+    SRam.start = SRam.end = sram_size = 0;
+  }
+
+  if (sram_size)
+  {
+    SRam.data = (unsigned char *) calloc(sram_size, 1);
+    if (SRam.data == NULL) return;
+  }
+  SRam.changed = 0;
+
+  // set EEPROM defaults, in case it gets detected
+  SRam.eeprom_type   = 0; // 7bit (24C01)
+  SRam.eeprom_abits  = 3; // eeprom access must be odd addr for: bit0 ~ cl, bit1 ~ in
+  SRam.eeprom_bit_cl = 1;
+  SRam.eeprom_bit_in = 0;
+  SRam.eeprom_bit_out= 0;
+
+  // some known EEPROM data (thanks to EkeEke)
+  if (name_cmp("COLLEGE SLAM") == 0 ||
+      name_cmp("FRANK THOMAS BIGHURT BASEBAL") == 0)
+  {
+    SRam.eeprom_type = 3;
+    SRam.eeprom_abits = 2;
+    SRam.eeprom_bit_cl = 0;
+  }
+  else if (name_cmp("NBA JAM TOURNAMENT EDITION") == 0 ||
+           name_cmp("NFL QUARTERBACK CLUB") == 0)
+  {
+    SRam.eeprom_type = 2;
+    SRam.eeprom_abits = 2;
+    SRam.eeprom_bit_cl = 0;
+  }
+  else if (name_cmp("NBA JAM") == 0)
+  {
+    SRam.eeprom_type = 2;
+    SRam.eeprom_bit_out = 1;
+    SRam.eeprom_abits = 0;
+  }
+  else if (name_cmp("NHLPA HOCKEY '93") == 0 ||
+           name_cmp("NHLPA Hockey '93") == 0 ||
+           name_cmp("RINGS OF POWER") == 0)
+  {
+    SRam.start = SRam.end = 0x200000;
+    Pico.m.sram_reg = 0x14;
+    SRam.eeprom_abits = 0;
+    SRam.eeprom_bit_cl = 6;
+    SRam.eeprom_bit_in = 7;
+    SRam.eeprom_bit_out= 7;
+  }
+  else if ( name_cmp("MICRO MACHINES II") == 0 ||
+           (name_cmp("        ") == 0 && // Micro Machines {Turbo Tournament '96, Military - It's a Blast!}
+           (csum == 0x165e || csum == 0x168b || csum == 0xCEE0 || csum == 0x2C41)))
+  {
+    SRam.start = 0x300000;
+    SRam.end   = 0x380001;
+    Pico.m.sram_reg = 0x14;
+    SRam.eeprom_type = 2;
+    SRam.eeprom_abits = 0;
+    SRam.eeprom_bit_cl = 1;
+    SRam.eeprom_bit_in = 0;
+    SRam.eeprom_bit_out= 7;
+  }
+
+  // SVP detection
+  else if (name_cmp("Virtua Racing") == 0 ||
+           name_cmp("VIRTUA RACING") == 0)
+  {
+    PicoSVPStartup();
+  }
+
+  // Pico
+  else if (rom_strcmp(0x100, "SEGA PICO") == 0 ||
+           rom_strcmp(0x100, "IMA IKUNOUJYUKU") == 0) // what is that supposed to mean?
+  {
+    PicoInitPico();
+  }
+
+  // Detect 12-in-1 mapper
+  else if ((name_cmp("ROBOCOP 3") == 0 && Pico.romsize == 0x200000) ||
+    (rom_strcmp(0x160, "FLICKY") == 0 && Pico.romsize >= 0x200000)  ||
+    (name_cmp(" SHOVE IT!") == 0 && Pico.romsize >= 0x200000) ||
+    (name_cmp("MS PACMAN") == 0 && Pico.romsize >= 0x200000)) // bad dump?
+  {
+    carthw_12in1_startup();
+  }
+
+  // Realtec mapper
+  else if (Pico.romsize == 512*1024 && (
+    rom_strcmp(0x94, "THE EARTH DEFEND") == 0 ||
+    rom_strcmp(0xfe, "WISEGAME 11-03-1993") == 0 || // Funny World
+    rom_strcmp(0x95, "MALLET LEGEND ") == 0)) // Whac-A-Critter
+  {
+    carthw_realtec_startup();
+  }
+
+  // Radica mapper
+  else if (name_cmp("KID CHAMELEON") == 0 && Pico.romsize > 0x100000)
+  {
+    carthw_radica_startup();
+  }
+
+  // Some games malfunction if SRAM is not filled with 0xff
+  if (name_cmp("DINO DINI'S SOCCER") == 0 ||
+      name_cmp("MICRO MACHINES II") == 0)
+  {
+    memset(SRam.data, 0xff, sram_size);
+  }
+
+  // Unusual region 'code'
+  if (rom_strcmp(0x1f0, "EUROPE") == 0 || rom_strcmp(0x1f0, "Europe") == 0)
+    *(int *) (Pico.rom+0x1f0) = 0x20204520;
+}
+