bool
get_lvds_mode_from_bios(display_mode* sharedInfo)
{
if (!get_bios())
return false;
int vbtOffset = vbios.ReadWord(kVbtPointer);
struct vbt_header* vbt = (struct vbt_header*)(vbios.memory + vbtOffset);
int bdbOffset = vbtOffset + vbt->bdb_offset;
struct bdb_header* bdb = (struct bdb_header*)(vbios.memory + bdbOffset);
if (memcmp(bdb->signature, "BIOS_DATA_BLOCK ", 16) != 0) {
TRACE((DEVICE_NAME": bad BDB signature\n"));
delete_area(vbios.area);
}
TRACE((DEVICE_NAME": parsing BDB blocks\n"));
int blockSize;
int panelType = -1;
for (int bdbBlockOffset = bdb->header_size; bdbBlockOffset < bdb->bdb_size;
bdbBlockOffset += blockSize) {
int start = bdbOffset + bdbBlockOffset;
int id = vbios.memory[start];
blockSize = vbios.ReadWord(start + 1) + 3;
// TRACE((DEVICE_NAME": found BDB block type %d\n", id));
switch (id) {
case 40: // FIXME magic numbers
{
struct lvds_bdb1 *lvds1;
lvds1 = (struct lvds_bdb1 *)(vbios.memory + start);
panelType = lvds1->panel_type;
break;
}
case 41:
{
if (panelType == -1)
break;
struct lvds_bdb2 *lvds2;
struct lvds_bdb2_lfp_info *lvds2_lfp_info;
lvds2 = (struct lvds_bdb2 *)(vbios.memory + start);
lvds2_lfp_info = (struct lvds_bdb2_lfp_info *)
(vbios.memory + bdbOffset
+ lvds2->panels[panelType].lfp_info_offset);
/* found bad one terminator */
if (lvds2_lfp_info->terminator != 0xffff) {
delete_area(vbios.area);
return false;
}
uint8_t* timing_data = vbios.memory + bdbOffset
+ lvds2->panels[panelType].lfp_edid_dtd_offset;
TRACE((DEVICE_NAME": found LFP of size %d x %d "
"in BIOS VBT tables\n",
lvds2_lfp_info->x_res, lvds2_lfp_info->y_res));
vbios.timings_common.hsync_start = _H_ACTIVE(timing_data)
+ _H_SYNC_OFF(timing_data);
vbios.timings_common.hsync_end
= vbios.timings_common.hsync_start
+ _H_SYNC_WIDTH(timing_data);
vbios.timings_common.hsync_total = _H_ACTIVE(timing_data)
+ _H_BLANK(timing_data);
vbios.timings_common.vsync_start = _V_ACTIVE(timing_data)
+ _V_SYNC_OFF(timing_data);
vbios.timings_common.vsync_end
= vbios.timings_common.vsync_start
+ _V_SYNC_WIDTH(timing_data);
vbios.timings_common.vsync_total = _V_ACTIVE(timing_data)
+ _V_BLANK(timing_data);
vbios.shared_info = sharedInfo;
return feed_shared_info(timing_data);
}
}
}
delete_area(vbios.area);
return true;
}
void PicoMemSetup32x(void)
{
unsigned int rs;
int i;
if (!Pico32xMem)
Pico32xMem = malloc(sizeof(*Pico32xMem));
if (Pico32xMem == NULL) {
elprintf(EL_STATUS, "OOM");
return;
}
get_bios();
// cartridge area becomes unmapped
// XXX: we take the easy way and don't unmap ROM,
// so that we can avoid handling the RV bit.
// m68k_map_unmap(0x000000, 0x3fffff);
if (!Pico.m.ncart_in) {
// MD ROM area
rs = sizeof(Pico32xMem->m68k_rom_bank);
cpu68k_map_set(m68k_read8_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0);
cpu68k_map_set(m68k_read16_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0);
cpu68k_map_set(m68k_write8_map, 0x000000, rs - 1, PicoWrite8_hint, 1); // TODO verify
cpu68k_map_set(m68k_write16_map, 0x000000, rs - 1, PicoWrite16_hint, 1);
// 32X ROM (unbanked, XXX: consider mirroring?)
rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK;
if (rs > 0x80000)
rs = 0x80000;
cpu68k_map_set(m68k_read8_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0);
cpu68k_map_set(m68k_read16_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0);
cpu68k_map_set(m68k_write8_map, 0x880000, 0x880000 + rs - 1, PicoWrite8_cart, 1);
cpu68k_map_set(m68k_write16_map, 0x880000, 0x880000 + rs - 1, PicoWrite16_cart, 1);
#ifdef EMU_F68K
// setup FAME fetchmap
PicoCpuFM68k.Fetch[0] = (unsigned long)Pico32xMem->m68k_rom;
for (rs = 0x88; rs < 0x90; rs++)
PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom - 0x880000;
#endif
// 32X ROM (banked)
bank_switch(0);
cpu68k_map_set(m68k_write8_map, 0x900000, 0x9fffff, PicoWrite8_bank, 1);
cpu68k_map_set(m68k_write16_map, 0x900000, 0x9fffff, PicoWrite16_bank, 1);
}
// SYS regs
cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_32x_on, 1);
cpu68k_map_set(m68k_read16_map, 0xa10000, 0xa1ffff, PicoRead16_32x_on, 1);
cpu68k_map_set(m68k_write8_map, 0xa10000, 0xa1ffff, PicoWrite8_32x_on, 1);
cpu68k_map_set(m68k_write16_map, 0xa10000, 0xa1ffff, PicoWrite16_32x_on, 1);
// SH2 maps: A31,A30,A29,CS1,CS0
// all unmapped by default
for (i = 0; i < ARRAY_SIZE(sh2_read8_map); i++) {
sh2_read8_map[i].addr = MAP_HANDLER(sh2_read8_unmapped);
sh2_read16_map[i].addr = MAP_HANDLER(sh2_read16_unmapped);
}
for (i = 0; i < ARRAY_SIZE(sh2_write8_map); i++) {
sh2_write8_map[i] = sh2_write8_unmapped;
sh2_write16_map[i] = sh2_write16_unmapped;
}
// "purge area"
for (i = 0x40; i <= 0x5f; i++) {
sh2_write8_map[i >> 1] =
sh2_write16_map[i >> 1] = sh2_write_ignore;
}
// CS0
sh2_read8_map[0x00/2].addr = sh2_read8_map[0x20/2].addr = MAP_HANDLER(sh2_read8_cs0);
sh2_read16_map[0x00/2].addr = sh2_read16_map[0x20/2].addr = MAP_HANDLER(sh2_read16_cs0);
sh2_write8_map[0x00/2] = sh2_write8_map[0x20/2] = sh2_write8_cs0;
sh2_write16_map[0x00/2] = sh2_write16_map[0x20/2] = sh2_write16_cs0;
// CS1 - ROM
sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr =
sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom);
sh2_read8_map[0x02/2].mask = sh2_read8_map[0x22/2].mask =
sh2_read16_map[0x02/2].mask = sh2_read16_map[0x22/2].mask = 0x3fffff; // FIXME
// CS2 - DRAM - done by Pico32xSwapDRAM()
sh2_read8_map[0x04/2].mask = sh2_read8_map[0x24/2].mask =
sh2_read16_map[0x04/2].mask = sh2_read16_map[0x24/2].mask = 0x01ffff;
// CS3 - SDRAM
sh2_read8_map[0x06/2].addr = sh2_read8_map[0x26/2].addr =
sh2_read16_map[0x06/2].addr = sh2_read16_map[0x26/2].addr = MAP_MEMORY(Pico32xMem->sdram);
sh2_write8_map[0x06/2] = sh2_write8_sdram;
sh2_write8_map[0x26/2] = sh2_write8_sdram_wt;
sh2_write16_map[0x06/2] = sh2_write16_map[0x26/2] = sh2_write16_sdram;
sh2_read8_map[0x06/2].mask = sh2_read8_map[0x26/2].mask =
sh2_read16_map[0x06/2].mask = sh2_read16_map[0x26/2].mask = 0x03ffff;
// SH2 data array
sh2_read8_map[0xc0/2].addr = MAP_HANDLER(sh2_read8_da);
sh2_read16_map[0xc0/2].addr = MAP_HANDLER(sh2_read16_da);
sh2_write8_map[0xc0/2] = sh2_write8_da;
sh2_write16_map[0xc0/2] = sh2_write16_da;
// SH2 IO
sh2_read8_map[0xff/2].addr = MAP_HANDLER(sh2_peripheral_read8);
sh2_read16_map[0xff/2].addr = MAP_HANDLER(sh2_peripheral_read16);
sh2_write8_map[0xff/2] = sh2_peripheral_write8;
sh2_write16_map[0xff/2] = sh2_peripheral_write16;
// map DRAM area, both 68k and SH2
Pico32xSwapDRAM(1);
msh2.read8_map = ssh2.read8_map = sh2_read8_map;
msh2.read16_map = ssh2.read16_map = sh2_read16_map;
msh2.write8_tab = ssh2.write8_tab = (const void **)(void *)sh2_write8_map;
msh2.write16_tab = ssh2.write16_tab = (const void **)(void *)sh2_write16_map;
// z80 hack
z80_map_set(z80_write_map, 0x8000, 0xffff, z80_md_bank_write_32x, 1);
}