diff options
Diffstat (limited to 'backends/gp32/gp32_main.cpp')
| -rw-r--r-- | backends/gp32/gp32_main.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/backends/gp32/gp32_main.cpp b/backends/gp32/gp32_main.cpp new file mode 100644 index 0000000000..46496ccf51 --- /dev/null +++ b/backends/gp32/gp32_main.cpp @@ -0,0 +1,183 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2001-2005 The ScummVM project + * Copyright (C) 2005 Won Star - GP32 Backend + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * $Header$ + * + */ + +#include "stdafx.h" +#include "common/scummsys.h" +#include "common/scaler.h" +#include "common/system.h" +#include "backends/intern.h" + +#include "base/engine.h" + +#include "backends/gp32/gp32std.h" +#include "backends/gp32/gp32std_grap.h" + +#include "backends/gp32/gp32_launcher.h" + +#include "backends/gp32/gp32_osys.h" + +extern "C" int scummvm_main(int argc, char *argv[]); + +extern void gp_delay(uint32 msecs); + +extern "C" void cpu_speed(int MCLK, int CLKDIV, int CLKMODE); // CPU Speed control (3 int's, clock, bus, dividor) + +// Where's better position? +static int CLKDIV = 0x48013; +static int MCLK = 40000000; +static int CLKMODE = 0; +static int HCLK = 40000000; +static int PCLK = 40000000; +/* +int gp_getPCLK() { + return PCLK; +} + +int gp_getHCLK() { + return HCLK; +} +*/ +void gp_clockSpeedChange(int freq, int magic, int div) { + #define rTCFG0 (*(volatile unsigned *)0x15100000) + #define rTCFG1 (*(volatile unsigned *)0x15100004) + #define rTCNTB4 (*(volatile unsigned *)0x1510003c) + unsigned int pclk; + unsigned int prescaler0; + + /* Change CPU Speed */ + GpClockSpeedChange(freq, magic, div); + pclk = GpPClkGet(); + + /* Repair SDK timer - it forgets to set prescaler */ + prescaler0 = (pclk / (8000 * 40)) - 1; + rTCFG0 = (rTCFG0 & 0xFFFFFF00) | prescaler0; + rTCFG1 = 0x30033; + + /* Repair GpTickCountGet */ + rTCNTB4 = pclk / 1600; +} + +void gp_setCpuSpeed(int freq) { + switch (freq) { + // overclocked + case 168: { CLKDIV = 0x14000; MCLK = 168000000; CLKMODE = 3; break; } + case 172: { CLKDIV = 0x23010; MCLK = 172000000; CLKMODE = 3; break; } + case 176: { CLKDIV = 0x24010; MCLK = 176000000; CLKMODE = 3; break; } + case 180: { CLKDIV = 0x16000; MCLK = 180000000; CLKMODE = 3; break; } + case 184: { CLKDIV = 0x26010; MCLK = 184000000; CLKMODE = 3; break; } + case 188: { CLKDIV = 0x27010; MCLK = 188000000; CLKMODE = 3; break; } + case 192: { CLKDIV = 0x18000; MCLK = 192000000; CLKMODE = 3; break; } + case 196: { CLKDIV = 0x29010; MCLK = 196000000; CLKMODE = 3; break; } + case 200: { CLKDIV = 0x2A010; MCLK = 200000000; CLKMODE = 3; break; } + case 204: { CLKDIV = 0x2b010; MCLK = 204000000; CLKMODE = 3; break; } + case 208: { CLKDIV = 0x2c010; MCLK = 208000000; CLKMODE = 3; break; } + case 212: { CLKDIV = 0x2d010; MCLK = 212000000; CLKMODE = 3; break; } + case 216: { CLKDIV = 0x2e010; MCLK = 216000000; CLKMODE = 3; break; } + case 220: { CLKDIV = 0x2f010; MCLK = 220000000; CLKMODE = 3; break; } + case 224: { CLKDIV = 0x30010; MCLK = 224000000; CLKMODE = 3; break; } + case 228: { CLKDIV = 0x1e000; MCLK = 228000000; CLKMODE = 3; break; } + case 232: { CLKDIV = 0x32010; MCLK = 232000000; CLKMODE = 3; break; } + case 236: { CLKDIV = 0x33010; MCLK = 236000000; CLKMODE = 3; break; } + case 240: { CLKDIV = 0x20000; MCLK = 240000000; CLKMODE = 3; break; } + case 244: { CLKDIV = 0x35010; MCLK = 244000000; CLKMODE = 3; break; } + case 248: { CLKDIV = 0x36010; MCLK = 248000000; CLKMODE = 3; break; } + case 252: { CLKDIV = 0x22000; MCLK = 252000000; CLKMODE = 3; break; } + case 256: { CLKDIV = 0x38010; MCLK = 256000000; CLKMODE = 3; break; } + + // normal +// case 166: { CLKDIV = 0x4B011; MCLK = 166000000; CLKMODE = 3; break; } + case 166: { CLKDIV = 0x2f001; MCLK = 165000000; CLKMODE = 3; break; } + case 164: { CLKDIV = 0x4a011; MCLK = 164000000; CLKMODE = 3; break; } + case 160: { CLKDIV = 0x48011; MCLK = 160000000; CLKMODE = 3; break; } +// case 156: { CLKDIV = 0x2c001; MCLK = 156000000; CLKMODE = 3; break; } + case 156: { CLKDIV = 0x2c001; MCLK = 156000000; CLKMODE = 3; break; } + case 144: { CLKDIV = 0x28001; MCLK = 144000000; CLKMODE = 3; break; } +// case 133: { CLKDIV = 0x3a011; MCLK = 132000000; CLKMODE = 3; break; } + case 133: { CLKDIV = (81 << 12) | (2 << 4) | 1; MCLK = 133500000; CLKMODE = 2; break; } + case 132: { CLKDIV = 0x3a011; MCLK = 132000000; CLKMODE = 3; break; } + case 120: { CLKDIV = 0x24001; MCLK = 120000000; CLKMODE = 2; break; } +// case 100: { CLKDIV = 0x2b011; MCLK = 102000000; CLKMODE=2; break; } + case 100: { CLKDIV =( 43 << 12) | (1 << 4) | 1; MCLK = 102000000; CLKMODE = 2; break; } +// case 66: { CLKDIV = 0x25002; MCLK= 67500000; CLKMODE=2; break; } + case 66: { CLKDIV = (37 << 12) | (0 << 4) | 2; MCLK= 67500000; CLKMODE = 2; break; } + case 50: { CLKDIV = 0x2a012; MCLK= 50000000; CLKMODE = 0; break; } +// case 40: { CLKDIV = 0x48013; MCLK= 40000000; CLKMODE = 0; break; } + case 40: { CLKDIV = 0x48013; MCLK= 40000000; CLKMODE = 1; break; } +// case 33: { CLKDIV = 0x25003; MCLK= 33750000; CLKMODE = 0; break; } + case 33: { CLKDIV = (37 << 12) | (0 << 4) | 3; MCLK = 33750000; CLKMODE = 2; break; } + case 22: { CLKDIV = 0x33023; MCLK = 22125000; CLKMODE = 0; break; } + } + if (CLKMODE==0) { HCLK = MCLK; PCLK = MCLK; } + if (CLKMODE==1) { HCLK = MCLK; PCLK = MCLK / 2; } + if (CLKMODE==2) { HCLK = MCLK / 2; PCLK = MCLK / 2; } + if (CLKMODE==3) { HCLK = MCLK / 2; PCLK = MCLK / 4; } + //cpu_speed(MCLK, CLKDIV, CLKMODE); + gp_clockSpeedChange(MCLK, CLKDIV, CLKMODE); +} + +void gp_Reset() { + gp_setCpuSpeed(66); + asm volatile("swi #4\n"); +} + +void init() { + gp_setCpuSpeed(66); // Default CPU Speed + + GpGraphicModeSet(16, NULL); + + //if (type == NLU || type == FLU || type == BLU) + // gp_initFramebuffer(frameBuffer, 16, 85); + //else if (type == BLUPLUS) + // gp_initFramebufferBP(frameBuffer, 16, 85); + // else + // error("Invalid Console"); + gp_initFrameBuffer(); + + + GpFatInit(); + GpRelativePathSet("gp:\\gpmm"); + //ERR_CODE err_code; + //err_code = GpDirCreate("temp", 0); + // if (err_code != SM_OK) return; + g_cpuSpeed = 120; +} + +void GpMain(void *arg) { + init(); + + splashScreen(); + + //doConfig + gp_setCpuSpeed(g_cpuSpeed); + GPDEBUG("Set CPU Speed: %d", g_cpuSpeed); + + // FOR DEBUG PURPOSE! + int argc = 2; + //char *argv[] = { "scummvm", "playfate" }; + //char *argv[] = { "scummvm", "-enull", "-pgp:\\game\\loomcd\\", "loomcd" }; + //char *argv[] = { "scummvm", "-enull", "-pgp:\\game\\dott\\", "tentacle" }; + char *argv[] = { "scummvm", "-enull", "-d3" }; + + //scummvm_main(argc, argv); + + scummvm_main(1, NULL); +} |