skyeye_mach_pxa270.c

SkyEye是一个可以运行嵌入式操作系统的硬件仿真工具

		/*OS timer */
	case OSCR:
		data = pxa270_io.oscr;
		break;
	case OSMR0:
		data = pxa270_io.osmr0;
		break;
	case OSMR1:
		data = pxa270_io.osmr1;
		break;
	case OSMR2:
		data = pxa270_io.osmr2;
		break;
	case OSMR3:
		data = pxa270_io.osmr3;
		break;
	case OWER:
		data = pxa270_io.ower;
		break;
	case OSSR:
		data = pxa270_io.ossr;
		break;
	case OIER:
		data = pxa270_io.oier;
		break;

		/*interrupt controler */
	case ICPR:
		data = pxa270_io.icpr;
		break;
	case ICIP:
		data = (pxa270_io.icmr & pxa270_io.icpr) & ~pxa270_io.iclr;
		break;
	case ICFP:
		data = (pxa270_io.icmr & pxa270_io.icpr) & pxa270_io.iclr;
		break;
	case ICMR:
		data = pxa270_io.icmr;
		break;
	case ICLR:
		data = pxa270_io.iclr;
		break;

		/* ffuart control */
	case FFRBR:		//chy: 2003-08-24 have some question, maybe skyeye will be locked here ????
		{
			//unsigned char c;
			//read(skyeye_config.uart.fd_in, &c, 1);
			//data = c;
			data = pxa270_io.ffrbr & 0xff;
			pxa270_io.icpr &= ~FFUART_IRQ;
			pxa270_io.icip &= ~FFUART_IRQ;
			pxa270_io.ffiir &= ~0x4;
			/*chy 2004-07-21 from lzt, afte read char, should set this bit */
			pxa270_io.ffiir |= 0x1;

			//printf("SKYEYE: read FFRBR, but set ffiir  and ~04, now %x\n",pxa270_io.ffiir);
			pxa270_io.fflsr &= ~0x1;

		};
		break;
	case FFIER:
		data = pxa270_io.ffier;
		break;
	case FFIIR:		//read only
		data = pxa270_io.ffiir & 0xcf;
		pxa270_io.icpr &= ~FFUART_IRQ;
		pxa270_io.icip &= ~FFUART_IRQ;
		//printf("SKYEYE: read FFIIR  %x\n",data);
		break;
	case FFLCR:
		data = pxa270_io.fflcr;
		break;
	case FFLSR:		//read only 
		//chy 2003-08-24  NOTICE!
		//fixed by ksh 2004-05-09,for FFUART can input char,I am not sure?
		//pxa270_io.fflsr=1<<5; // LSR's TDRQ =1 , then the cpu can write char again
		pxa270_io.fflsr |= 0x60;	// chy 2003-09-02 for LSR_TEMT|LSR_THRE 0x40|0x20
		data = pxa270_io.fflsr & 0xff;
		break;

		// core clock 
	case CCCR:
		data = pxa270_io.cccr;
		break;
	case CKEN:
		data = pxa270_io.cken;
		break;
	case OSCC:
		data = pxa270_io.oscc;
		break;
		//ywc,2004-11-30,add for pxa's LCD simulation
#if 0
	case LCCR0:
		data = pxa270_io.lccr0;
		break;
	case LCCR1:
		data = pxa270_io.lccr1;
		break;
	case LCCR2:
		data = pxa270_io.lccr2;
		break;
	case LCCR3:
		data = pxa270_io.lccr3;
		break;
	case FDADR0:
		data = pxa270_io.fdadr0;
		break;
	case FDADR1:
		data = pxa270_io.fdadr1;
		break;
	case FSADR0:
		data = pxa270_io.fsadr0;
		break;
	case FSADR1:
		data = pxa270_io.fsadr1;
		break;
#endif
		//ywc,2004-11-30,add for pxa's LCD simulation,end
#if 0
	case FFFCR:		//write only
	case FFMCR:		//no use                   
	case FFMSR:		//read only no use
	case FFSPR:		// no use
	case FFISR:		// no use
#endif

	default:
		data = 0;
		//chy 2003-09-03 if debug, uncommit it
		//printf("SKYEYE: pxa270_io_read_word: unknown addr 0x%x, reg15 0x%x \n", addr,state->Reg[15]);
	};

	//printf("SKYEYE:pxa270_io_read_word: end io addr 0x%x  data 0x%x\n",ioregaddr,data);
	return data;
};


static void
pxa270_io_do_cycle (ARMul_State * state)
{
	
	 /*RTC*/ 
	if (++pxa270_io.rt_scale >= RT_SCALE) {
		pxa270_io.rt_scale = 0;
		if (pxa270_io.rt_count++ == (pxa270_io.rttr & 0xffff)) {
			pxa270_io.rt_count = 0;

			if (pxa270_io.rcnr++ == pxa270_io.rtar) {
				if (pxa270_io.rtsr & 0x4) {
					pxa270_io.rtsr |= 0x1;
				};
			}
			if (pxa270_io.rtsr & 0x8) {
				pxa270_io.rtsr |= 0x2;
			}
		}
		if ((pxa270_io.rtsr & 0x1) && (pxa270_io.rtsr & 0x4))
			pxa270_io.icpr |= RTC_ALARM_IRQ;
		if ((pxa270_io.rtsr & 0x2) && (pxa270_io.rtsr & 0x8))
			pxa270_io.icpr |= RTC_HZ_IRQ;
	}

	/* OS timer */
	if (++pxa270_io.os_scale >= OS_SCALE) {
		u32 mask = 0;
		u32 count;

		pxa270_io.os_scale = 0;
		count = pxa270_io.oscr;

		if (count == pxa270_io.osmr0){
			mask = 1;
		}
		if (count == pxa270_io.osmr1)
			mask |= 0x2;
		if (count == pxa270_io.osmr2)
			mask |= 0x4;
		if (count == pxa270_io.osmr3) {
			mask |= 0x8;
			if (pxa270_io.ower & 1) {
				state->NresetSig = LOW;
				printf ("************SKYEYE: WatchDog reset!!!!!!!**************\n");
			}
		}
		pxa270_io.oscr++;
		pxa270_io.ossr |= mask;
		mask = pxa270_io.oier & pxa270_io.ossr;
		pxa270_io.icpr |= (mask << OS_IRQ_SHF);
	}

	/*FF UART */
	//pxa270_io.utsr0 = 1; /*always TFS, no others*/
	//pxa270_io.utsr1 = 0x4; /*TNF*/
	if (++pxa270_io.ff_scale >= FF_SCALE) {
		pxa270_io.ff_scale = 0;
		if (!(FFUART_IRQ & pxa270_io.icpr)) {
			/* 2007-01-18 modified by Anthony Lee : for new uart device frame */
			struct timeval tv;
			unsigned char c;

			tv.tv_sec = 0;
			tv.tv_usec = 0;

			//pxa270_io.utsr1 |= 0x2;  //RNE
			//pxa270_io.utsr0 |= 0x4; //Rx idle
			//added by ksh,2004-4-25,get uart data and  set the interrupt
			if(skyeye_uart_read(-1, &c, 1, &tv, NULL) > 0)
			{
				pxa270_io.ffrbr = (int) c;
				pxa270_io.ffiir |= 0x4;	//Rx idle
				//printf("SKYEYE: io_do_cycle  set ffiir  or 04, now %x\n",pxa270_io.ffiir);
				pxa270_io.fflsr |= 0x01;	//Data ready
			}

			if ((pxa270_io.ffier & 0x1)
			    && (pxa270_io.ffiir & 0x4)) {
				pxa270_io.icpr |= FFUART_IRQ;
				pxa270_io.ffiir &= ~0x1;
			}
			/*chy 2004-07-21 from luzhetao: produce a IRQ and ox2 should clean by OS driver */
			if (pxa270_io.ffier & 0x2) {
				pxa270_io.icpr |= FFUART_IRQ;
				pxa270_io.ffiir |= 0x2;
				pxa270_io.ffiir &= ~0x1;
				pxa270_io.fflsr |= 0x60;
			}
		}
		//ywc,2004-11-30,check and get the mouse event
#ifndef NO_LCD
		if (!(pxa270_io.icpr & pxa270_io.ts_int)) {	//if now has no ts interrupt,then query 
			if (Pen_buffer[6] == 1) {	//should trigger a interrupt
				*(pxa270_io.ts_buffer + 0) = Pen_buffer[0];
				*(pxa270_io.ts_buffer + 1) = Pen_buffer[1];
				*(pxa270_io.ts_buffer + 4) = Pen_buffer[4];
				*(pxa270_io.ts_buffer + 6) = Pen_buffer[6];
				//set EINT2 bit to trigger a interrupt,ts driver will clear it
				pxa270_io.icpr |= pxa270_io.ts_int;
				Pen_buffer[6] = 0;
			}
		}
#endif
		//ywc,2004-11-30,check and get the mouse event,end
	}

	pxa270_update_int (state);

	/*reset interrupt pin status */
	//refresh_irq (state);
};


static void
refresh_irq (ARMul_State * state)
{
	u32 irq = 0;
	u32 mask;

	 /*RTC*/ if ((pxa270_io.rtsr & 0x1) && (pxa270_io.rtsr & 0x4))
		irq |= RTC_ALARM_IRQ;
	if ((pxa270_io.rtsr & 0x2) && (pxa270_io.rtsr & 0x8))
		irq |= RTC_HZ_IRQ;
	/*OS time */
	mask = pxa270_io.oier & pxa270_io.ossr;
	irq |= (mask << OS_IRQ_SHF);
#if 0
	/*UART3 */
	if ((pxa270_io.utcr3 & 0x8) && (pxa270_io.utsr0 & 0x6))
		irq |= UART3_IRQ;
	if (pxa270_io.utsr0 & 0x38)
		irq |= UART3_IRQ;

	if ((pxa270_io.utcr3 & 0x10) && (pxa270_io.utsr0 & 0x1))
		irq |= UART3_IRQ;
#endif
	 /*FFUART*/
		//chy 2004-07-19 luzetao find a solution: if (pxa270_io.ffier&0x2){ irq |= FFUART_IRQ; }
		//chy 2004-07-19 then linux-2.6.x can run correctly!
		//chy 2004-06-23  FFIER    TIE or RAVIE, so shoud be 3, FFIIR 0x4 or 0x2=0x6   
		/* chy 2004-07-21 from luzhetao
		   if((pxa270_io.ffier&0x02)||((pxa270_io.ffier&0x3) && (pxa270_io.ffiir&0x6))){
		   irq |= FFUART_IRQ;
		   }
		 */
		/*chy 2004-07-21 from luzhetao: produce a IRQ */
		if ((pxa270_io.ffier & 0x1) && (pxa270_io.ffiir & 0x4)) {
		irq |= FFUART_IRQ;
		pxa270_io.ffiir &= ~0x1;
	}
	/*chy 2004-07-21 from luzhetao: produce a IRQ and ox2 should clean by OS driver */
	if (pxa270_io.ffier & 0x2) {
		irq |= FFUART_IRQ;
		pxa270_io.ffiir |= 0x2;
		pxa270_io.ffiir &= ~0x1;
		pxa270_io.fflsr |= 0x60;
	}

	//ywc,2004-11-30,produce a touchsreen IRQ
	if (pxa270_io.icpr & pxa270_io.ts_int) {
		irq |= pxa270_io.ts_int;
	}
	//ywc,2004-11-30,produce a touchsreen IRQ,end

	pxa270_io.icpr = irq;
	pxa270_io.icip = (pxa270_io.icmr & pxa270_io.icpr) & ~pxa270_io.iclr;
	pxa270_io.icfp = (pxa270_io.icmr & pxa270_io.icpr) & pxa270_io.iclr;
	state->NirqSig = pxa270_io.icip ? LOW : HIGH;
	state->NfiqSig = pxa270_io.icfp ? LOW : HIGH;
}

void
pxa270_mach_init (ARMul_State * state, machine_config_t * mc)
{
	//chy 2003-08-19, setprocessor
	//chy 2005-09-19 add PXA27X_Prop
	ARMul_SelectProcessor (state,
			       ARM_XScale_Prop | ARM_v5_Prop | ARM_v5e_Prop |
			       ARM_PXA27X_Prop);
	//chy 2004-05-09, set lateabtSig
	state->lateabtSig = LOW;

	state->Reg[1] = 406;	/*mainstone machine id. */
	pxa270_io_reset ();
	/*added by ksh for energy estimation in 2004-11-26 */
	state->energy.cccr = pxa270_io.cccr;

	mc->mach_io_do_cycle = pxa270_io_do_cycle;
	mc->mach_io_reset = pxa270_io_reset;
	mc->mach_io_read_byte = pxa270_io_read_byte;
	mc->mach_io_write_byte = pxa270_io_write_byte;
	mc->mach_io_read_halfword = pxa270_io_read_halfword;
	mc->mach_io_write_halfword = pxa270_io_write_halfword;
	mc->mach_io_read_word = pxa270_io_read_word;
	mc->mach_io_write_word = pxa270_io_write_word;

	mc->mach_set_intr = pxa_set_intr;
	mc->mach_pending_intr = pxa_pending_intr;
	mc->mach_update_intr = pxa_update_intr;

	mc->state = (void *) state;
}