-/* cpuctrl.c for GP2X (CPU/LCD/RAM-Tuner Version 2.0)
- Copyright (C) 2006 god_at_hell
- original CPU-Overclocker (c) by Hermes/PS2Reality
- the gamma-routine was provided by theoddbot
- parts (c) Rlyehs Work
-
- 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-*/
-
-
-/****************************************************************************************************************************************/
-// CPU CONTROL
-/****************************************************************************************************************************************/
-
-//#include <sys/mman.h>
-#include <math.h>
-#include <stdio.h>
-//#include "gp2xminilib.h"
-
-#define SYS_CLK_FREQ 7372800
-
-//from minimal library rlyeh
-
-//extern unsigned long gp2x_dev[4];
-extern unsigned short *gp2x_memregs;
-
-// system registers
-static struct
-{
- unsigned short SYSCLKENREG,SYSCSETREG,FPLLVSETREG,DUALINT920,DUALINT940,DUALCTRL940,DISPCSETREG,MEMTIMEX0;
- unsigned short MEMTIMEX1,MEMREFX,MLC_GAMM_BYPATH,MLC_GAMMA_A,MLC_GAMMA_D,YBNKLVL;
-}
-system_reg;
-
-volatile unsigned short *MEM_REG;
-unsigned MDIV,PDIV,SCALE;
-volatile unsigned *arm940code;
-
-void cpuctrl_init()
-{
- MEM_REG=&gp2x_memregs[0];
-}
-
-void save_system_regs()
-{
- system_reg.SYSCSETREG=MEM_REG[0x91c>>1];
- system_reg.FPLLVSETREG=MEM_REG[0x912>>1];
- system_reg.SYSCLKENREG=MEM_REG[0x904>>1];
- system_reg.DUALINT920=MEM_REG[0x3B40>>1];
- system_reg.DUALINT940=MEM_REG[0x3B42>>1];
- system_reg.DUALCTRL940=MEM_REG[0x3B48>>1];
- system_reg.DISPCSETREG=MEM_REG[0x924>>1];
- system_reg.MEMTIMEX0=MEM_REG[0x3802>>1];
- system_reg.MEMTIMEX1=MEM_REG[0x3804>>1];
- system_reg.MEMREFX=MEM_REG[0x3808>>1];
- system_reg.MLC_GAMM_BYPATH=MEM_REG[0x2880>>1];
- system_reg.MLC_GAMMA_A=MEM_REG[0x295C>>1];
- system_reg.MLC_GAMMA_D=MEM_REG[0x295E>>1];
- system_reg.YBNKLVL=MEM_REG[0x283A>>1];
-}
-
-void load_system_regs()
-{
- MEM_REG[0x91c>>1]=system_reg.SYSCSETREG;
- MEM_REG[0x910>>1]=system_reg.FPLLVSETREG;
- MEM_REG[0x3B40>>1]=system_reg.DUALINT920;
- MEM_REG[0x3B42>>1]=system_reg.DUALINT940;
- MEM_REG[0x3B48>>1]=system_reg.DUALCTRL940;
- MEM_REG[0x904>>1]=system_reg.SYSCLKENREG;
- /* Set UPLLSETVREG to 0x4F02, which gives 80MHz */
- MEM_REG[0x0914>>1] = 0x4F02;
- /* Wait for clock change to start */
- while (MEM_REG[0x0902>>1] & 2);
- /* Wait for clock change to be verified */
- while (MEM_REG[0x0916>>1] != 0x4F02);
- MEM_REG[0x3802>>1]=system_reg.MEMTIMEX0;
- MEM_REG[0x3804>>1]=system_reg.MEMTIMEX1;
- MEM_REG[0x3808>>1]=system_reg.MEMREFX;
- MEM_REG[0x2880>>1]=system_reg.MLC_GAMM_BYPATH;
- MEM_REG[0x295C>>1]=system_reg.MLC_GAMMA_A;
- MEM_REG[0x295E>>1]=system_reg.MLC_GAMMA_D;
- MEM_REG[0x283A>>1]=system_reg.YBNKLVL;
-}
-
-
-void set_FCLK(unsigned MHZ)
-{
- printf ("set CPU-Frequency = %uMHz\r\n",MHZ);
- unsigned v;
- unsigned mdiv,pdiv=3,scale=0;
- MHZ*=1000000;
- mdiv=(MHZ*pdiv)/SYS_CLK_FREQ;
- //printf ("Old value = %04X\r",MEM_REG[0x924>>1]," ");
- //printf ("APLL = %04X\r",MEM_REG[0x91A>>1]," ");
- mdiv=((mdiv-8)<<8) & 0xff00;
- pdiv=((pdiv-2)<<2) & 0xfc;
- scale&=3;
- v=mdiv | pdiv | scale;
- MEM_REG[0x910>>1]=v;
-}
-
-unsigned get_FCLK()
-{
- return MEM_REG[0x910>>1];
-}
-
-#if 0
-void set_add_FLCDCLK(int addclock)
-{
- //Set LCD controller to use FPLL
- printf ("...set to FPLL-Clockgen...\r\n");
- printf ("set Timing-Prescaler = %i\r\n",addclock);
- MEM_REG[0x924>>1]= 0x5A00 + ((addclock)<<8);
- //If you change the initial timing, don't forget to shift your intervall-borders in "cpu_speed.c"
-}
-
-void set_add_ULCDCLK(int addclock)
-{
- //Set LCD controller to use UPLL
- printf ("...set to UPLL-Clockgen...\r\n");
- printf ("set Timing-Prescaler = %i\r\n",addclock);
- MEM_REG[0x0924>>1] = 0x8900 + ((addclock)<<8);
- //If you change the initial timing, don't forget to shift your intervall-borders in "cpu_speed.c"
-}
-
-unsigned get_LCDClk()
-{
- if (MEM_REG[0x0924>>1] < 0x7A01) return((MEM_REG[0x0924>>1] - 0x5A00)>>8);
- else return((MEM_REG[0x0924>>1] - 0x8900)>>8);
-}
-
-char get_Clkgen()
-{
- if (MEM_REG[0x0924>>1] < 0x7A01) return(0);
- else return(1);
-}
-
-unsigned get_freq_UCLK()
-{
- unsigned i;
- unsigned reg,mdiv,pdiv,scale;
- i = MEM_REG[0x900>>1];
- i = ((i >> 7) & 1) ;
- if(i) return 0;
- reg=MEM_REG[0x916>>1];
- mdiv = ((reg & 0xff00) >> 8) + 8;
- pdiv = ((reg & 0xfc) >> 2) + 2;
- scale = reg & 3;
- return ((SYS_CLK_FREQ * mdiv) / (pdiv << scale));
-}
-
-unsigned get_freq_ACLK()
-{
- unsigned i;
- unsigned reg,mdiv,pdiv,scale;
- i = MEM_REG[0x900>>1];
- i = ((i >> 8) & 1) ;
- if(i) return 0;
- reg=MEM_REG[0x918>>1];
- mdiv = ((reg & 0xff00) >> 8) + 8;
- pdiv = ((reg & 0xfc) >> 2) + 2;
- scale = reg & 3;
- return ((SYS_CLK_FREQ * mdiv)/(pdiv << scale));
-}
-
-unsigned get_freq_920_CLK()
-{
- unsigned i;
- unsigned reg,mdiv,pdiv,scale;
- reg=MEM_REG[0x912>>1];
- mdiv = ((reg & 0xff00) >> 8) + 8;
- pdiv = ((reg & 0xfc) >> 2) + 2;
- scale = reg & 3;
- MDIV=mdiv;
- PDIV=pdiv;
- SCALE=scale;
- i = (MEM_REG[0x91c>>1] & 7)+1;
- return ((SYS_CLK_FREQ * mdiv)/(pdiv << scale))/i;
-}
-
-unsigned get_freq_940_CLK()
-{
- unsigned i;
- unsigned reg,mdiv,pdiv,scale;
- reg=MEM_REG[0x912>>1];
- mdiv = ((reg & 0xff00) >> 8) + 8;
- pdiv = ((reg & 0xfc) >> 2) + 2;
- scale = reg & 3;
- i = ((MEM_REG[0x91c>>1]>>3) & 7)+1;
- return ((SYS_CLK_FREQ * mdiv) / (pdiv << scale))/i;
-}
-
-unsigned get_freq_DCLK()
-{
- unsigned i;
- unsigned reg,mdiv,pdiv,scale;
- reg=MEM_REG[0x912>>1];
- mdiv = ((reg & 0xff00) >> 8) + 8;
- pdiv = ((reg & 0xfc) >> 2) + 2;
- scale = reg & 3;
- i = ((MEM_REG[0x91c>>1]>>6) & 7)+1;
- return ((SYS_CLK_FREQ * mdiv) / (pdiv << scale))/i;
-}
-
-void set_920_Div(unsigned short div)
-{
- printf ("set divider for CPU-Clock = %u\r\n",div+1);
- unsigned short v;
- v = MEM_REG[0x91c>>1] & (~0x3);
- MEM_REG[0x91c>>1] = (div & 0x7) | v;
-}
-
-unsigned short get_920_Div()
-{
- return (MEM_REG[0x91c>>1] & 0x7);
-}
-
-void set_940_Div(unsigned short div)
-{
- unsigned short v;
- v = (unsigned short)( MEM_REG[0x91c>>1] & (~(0x7 << 3)));
- MEM_REG[0x91c>>1] = ((div & 0x7) << 3) | v;
-}
-
-unsigned short get_940_Div()
-{
- return ((MEM_REG[0x91c>>1] >> 3) & 0x7);
-}
-
-void set_DCLK_Div( unsigned short div )
-{
- printf ("set divider for RAM-Clock = %u\r\n",div+1);
- unsigned short v;
- v = (unsigned short)( MEM_REG[0x91c>>1] & (~(0x7 << 6)));
- MEM_REG[0x91c>>1] = ((div & 0x7) << 6) | v;
-}
-
-unsigned short get_DCLK_Div()
-{
- return ((MEM_REG[0x91c>>1] >> 6) & 0x7);
-}
-
-unsigned short Disable_Int_920()
-{
- unsigned short ret;
- ret=MEM_REG[0x3B40>>1];
- MEM_REG[0x3B40>>1]=0;
- MEM_REG[0x3B44>>1]=0xffff;
- return ret;
-}
-
-unsigned short Disable_Int_940()
-{
- unsigned short ret;
- ret=MEM_REG[0x3B42>>1];
- MEM_REG[0x3B42>>1]=0;
- MEM_REG[0x3B46>>1]=0xffff;
- return ret;
-}
-
-unsigned get_state940()
-{
- return MEM_REG[0x904>>1];
-}
-
-
-void Enable_Int_920(unsigned short flag)
-{
- MEM_REG[0x3B40>>1]=flag;
-}
-
-void Enable_Int_940(unsigned short flag)
-{
- MEM_REG[0x3B42>>1]=flag;
-}
-
-void Disable_940()
-{
- Disable_Int_940();
- MEM_REG[0x3B48>>1]|= (1 << 7);
- MEM_REG[0x904>>1]&=0xfffe;
-}
-
-void Load_940_code(unsigned *code,int size)
-{
- unsigned *cp;
- int i;
- arm940code=(unsigned short *)mmap(0, 0x100000, PROT_READ|PROT_WRITE, MAP_SHARED, gp2x_dev[2], 0x03000000);
- Disable_940();
- cp=(unsigned *) code;
- for (i = 0; i < size/4; i ++)
- {
- arm940code[i] = cp[i];
- }
- for (i = 0; i < 64; i ++)
- {
- arm940code[0x3FC0+i] = 0;
- }
- MEM_REG[0x3B48>>1]=(MEM_REG[0x3B48>>1] & 0xFF00) | 0x03; // allow 940
-}
-
-void clock_940_off()
-{
- MEM_REG[0x904>>1]&=0xfffe;
-}
-
-void clock_940_on()
-{
- MEM_REG[0x904>>1]|=1;
-}
-#endif
-
-
-//--------------
-//Memory Timings
-//--------------
-
-//get
-
-unsigned get_CAS()
-{
- return ((MEM_REG[0x3804>>1] >> 12) & 0x1);
-}
-
-unsigned get_tRC()
-{
- return ((MEM_REG[0x3804>>1] >> 8) & 0xF);
-}
-
-unsigned get_tRAS()
-{
- return ((MEM_REG[0x3804>>1] >> 4) & 0xF);
-}
-
-unsigned get_tWR()
-{
- return (MEM_REG[0x3804>>1] & 0xF);
-}
-
-unsigned get_tMRD()
-{
- return ((MEM_REG[0x3802>>1] >> 12) & 0xF);
-}
-
-unsigned get_tRFC()
-{
- return ((MEM_REG[0x3802>>1] >> 8) & 0xF);
-}
-
-unsigned get_tRP()
-{
- return ((MEM_REG[0x3802>>1] >> 4) & 0xF);
-}
-
-unsigned get_tRCD()
-{
- return (MEM_REG[0x3802>>1] & 0xF);
-}
-
-unsigned get_REFPERD()
-{
- return MEM_REG[0x3808>>1];
-}
-
-
-//set
-
-void set_CAS(unsigned short timing)
-{
- printf ("set CAS = %u\r\n",timing+2);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3804>>1] & (~(0x1 << 12)));
- MEM_REG[0x3804>>1] = ((timing & 0x1) << 12) | v;
-}
-
-void set_tRC(unsigned short timing)
-{
- printf ("set tRC = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3804>>1] & (~(0xF << 8)));
- MEM_REG[0x3804>>1] = ((timing & 0xF) << 8) | v;
-}
-
-void set_tRAS(unsigned short timing)
-{
- printf ("set tRAS = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3804>>1] & (~(0xF << 4)));
- MEM_REG[0x3804>>1] = ((timing & 0xF) << 4) | v;
-}
-
-void set_tWR(unsigned short timing)
-{
- printf ("set tWR = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3804>>1] & (~(0xF)));
- MEM_REG[0x3804>>1] = (timing & 0xF) | v;
-}
-
-void set_tMRD(unsigned short timing)
-{
- printf ("set tMRD = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3802>>1] & (~(0xF << 12)));
- MEM_REG[0x3802>>1] = ((timing & 0xF) << 12) | v;
-}
-
-void set_tRFC(unsigned short timing)
-{
- printf ("set tRFC = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3802>>1] & (~(0xF << 8)));
- MEM_REG[0x3802>>1] = ((timing & 0xF) << 8) | v;
-}
-
-void set_tRP(unsigned short timing)
-{
- printf ("set tRP = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3802>>1] & (~(0xF << 4)));
- MEM_REG[0x3802>>1] = ((timing & 0xF) << 4) | v;
-}
-
-void set_tRCD(unsigned short timing)
-{
- printf ("set tRCD = %u\r\n",timing+1);
- unsigned short v;
- v = (unsigned short)(MEM_REG[0x3802>>1] & (~(0xF)));
- MEM_REG[0x3802>>1] = (timing & 0xF) | v;
-}
-
-void set_REFPERD(unsigned short timing)
-{
- printf ("set Refresh Period = %u\r\n",timing+1);
- MEM_REG[0x3808>>1] = timing;
-}
-
-
-//-----
-//Gamma
-//-----
-
-void set_gamma(float gamma)
-{
- printf ("set gamma = %f\r\n",gamma);
- int i;
- gamma = 1/gamma;
-
- //enable gamma
- MEM_REG[0x2880>>1]&=~(1<<12);
-
- MEM_REG[0x295C>>1]=0;
- for(i=0; i<256; i++)
- {
- unsigned char g;
- unsigned short s;
- g =(unsigned char)(255.0*pow(i/255.0,gamma));
- s = (g<<8) | g;
- MEM_REG[0x295E>>1]= s;
- MEM_REG[0x295E>>1]= g;
- }
-}
-
-unsigned get_YBNKLVL()
-{
- return (MEM_REG[0x283A>>1] & 0x3FF);
-}
-
-void set_YBNKLVL(unsigned short val)
-{
- unsigned short temp = (unsigned short)(MEM_REG[0x3808>>1] & (~(0x3FF)));
- MEM_REG[0x3808>>1] = (val & 0x3FF) | temp;
-}
notaz.gp2x.de / gpsp.git / commitdiff