Merge branch 'wd'

1 files changed, 284 insertions, 0 deletions

diff --git a/board/c2mon/pcmcia.c b/board/c2mon/pcmcia.c
new file mode 100644
index 0000000..5e50c4d
--- /dev/null
+++ b/board/c2mon/pcmcia.c
@@ -0,0 +1,284 @@
+#include <common.h>
+#include <mpc8xx.h>
+#include <pcmcia.h>
+
+#undef	CONFIG_PCMCIA
+
+#if	(CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+#define	CONFIG_PCMCIA
+#endif
+
+#if	(CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
+#define	CONFIG_PCMCIA
+#endif
+
+#ifdef	CONFIG_PCMCIA
+
+#define PCMCIA_BOARD_MSG "C2MON"
+
+static void cfg_ports (void)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	ushort sreg;
+
+	immap = (immap_t *)CFG_IMMR;
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+	/*
+	* Configure Port C for TPS2211 PC-Card Power-Interface Switch
+	*
+	* Switch off all voltages, assert shutdown
+	*/
+	sreg = immap->im_ioport.iop_pcdat;
+	sreg |=  (TPS2211_VPPD0 | TPS2211_VPPD1);	/* VAVPP => Hi-Z */
+	sreg &= ~(TPS2211_VCCD0 | TPS2211_VCCD1);	/* 3V and 5V off */
+	immap->im_ioport.iop_pcdat = sreg;
+
+	immap->im_ioport.iop_pcpar &= ~(TPS2211_OUTPUTS);
+	immap->im_ioport.iop_pcdir |=   TPS2211_OUTPUTS;
+
+	debug ("Set Port C: PAR:     %04x DIR:     %04x DAT:     %04x\n",
+	       immap->im_ioport.iop_pcpar,
+	       immap->im_ioport.iop_pcdir,
+	       immap->im_ioport.iop_pcdat);
+
+	/*
+	* Configure Port B for TPS2211 PC-Card Power-Interface Switch
+	*
+	* Over-Current Input only
+	*/
+	cp->cp_pbpar &= ~(TPS2211_INPUTS);
+	cp->cp_pbdir &= ~(TPS2211_INPUTS);
+
+	debug ("Set Port B: PAR: %08x DIR: %08x DAT: %08x\n",
+	       cp->cp_pbpar, cp->cp_pbdir, cp->cp_pbdat);
+}
+
+int pcmcia_hardware_enable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	volatile sysconf8xx_t	*sysp;
+	uint reg, pipr, mask;
+	ushort sreg;
+	int i;
+
+	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	udelay(10000);
+
+	immap = (immap_t *)CFG_IMMR;
+	sysp  = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+
+	/* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
+	cfg_ports ();
+
+	/*
+	* Configure SIUMCR to enable PCMCIA port B
+	* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
+	*/
+	sysp->sc_siumcr &= ~SIUMCR_DBGC11;	/* set DBGC to 00 */
+
+	/* clear interrupt state, and disable interrupts */
+	pcmp->pcmc_pscr =  PCMCIA_MASK(_slot_);
+	pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
+
+	/*
+	* Disable interrupts, DMA, and PCMCIA buffers
+	* (isolate the interface) and assert RESET signal
+	*/
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = 0;
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	/*
+	* Make sure there is a card in the slot, then configure the interface.
+	*/
+	udelay(10000);
+	debug ("[%d] %s: PIPR(%p)=0x%x\n",
+	       __LINE__,__FUNCTION__,
+	       &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
+	if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
+		printf ("   No Card found\n");
+		return (1);
+	}
+
+	/*
+	* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
+	*/
+	mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
+	pipr = pcmp->pcmc_pipr;
+	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
+	       pipr,
+	       (reg&PCMCIA_VS1(slot))?"n":"ff",
+	       (reg&PCMCIA_VS2(slot))?"n":"ff");
+
+	sreg = immap->im_ioport.iop_pcdat;
+	if ((pipr & mask) == mask) {
+		sreg |=  (TPS2211_VPPD0 | TPS2211_VPPD1 |	/* VAVPP => Hi-Z */
+				TPS2211_VCCD1);			/* 5V on	*/
+		sreg &= ~(TPS2211_VCCD0);			/* 3V off	*/
+		puts (" 5.0V card found: ");
+	} else {
+		sreg |=  (TPS2211_VPPD0 | TPS2211_VPPD1 |	/* VAVPP => Hi-Z */
+				TPS2211_VCCD0);			/* 3V on	*/
+		sreg &= ~(TPS2211_VCCD1);			/* 5V off	*/
+		puts (" 3.3V card found: ");
+	}
+
+	debug ("\nPC DAT: %04x -> 3.3V %s 5.0V %s\n",
+	       sreg,
+	       ( (sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) ? "on" : "off",
+	       (!(sreg & TPS2211_VCCD0) &&  (sreg & TPS2211_VCCD1)) ? "on" : "off"
+	      );
+
+	immap->im_ioport.iop_pcdat = sreg;
+
+	/*  Wait 500 ms; use this to check for over-current */
+	for (i=0; i<5000; ++i) {
+		if ((cp->cp_pbdat & TPS2211_OC) == 0) {
+			printf ("   *** Overcurrent - Safety shutdown ***\n");
+			immap->im_ioport.iop_pcdat &= ~(TPS2211_VCCD0|TPS2211_VCCD1);
+			return (1);
+		}
+		udelay (100);
+	}
+
+	debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	udelay(250000);	/* some cards need >150 ms to come up :-( */
+
+	debug ("# hardware_enable done\n");
+
+	return (0);
+}
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
+int pcmcia_hardware_disable(int slot)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+
+	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
+
+	immap = (immap_t *)CFG_IMMR;
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+
+	/* Configure PCMCIA General Control Register */
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = 0;
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+
+	/* ALl voltages off / Hi-Z */
+	immap->im_ioport.iop_pcdat |= (TPS2211_VPPD0 | TPS2211_VPPD1 |
+			TPS2211_VCCD0 | TPS2211_VCCD1 );
+
+	udelay(10000);
+
+	return (0);
+}
+#endif	/* CFG_CMD_PCMCIA */
+
+
+int pcmcia_voltage_set(int slot, int vcc, int vpp)
+{
+	volatile immap_t	*immap;
+	volatile cpm8xx_t	*cp;
+	volatile pcmconf8xx_t	*pcmp;
+	u_long reg;
+	ushort sreg;
+
+	debug ("voltage_set: "
+			PCMCIA_BOARD_MSG
+			" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
+	'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
+
+	immap = (immap_t *)CFG_IMMR;
+	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
+	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
+	/*
+	* Disable PCMCIA buffers (isolate the interface)
+	* and assert RESET signal
+	*/
+	debug ("Disable PCMCIA buffers and assert RESET\n");
+	reg  = PCMCIA_PGCRX(_slot_);
+	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg |= __MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	/*
+	* Configure Port C pins for
+	* 5 Volts Enable and 3 Volts enable,
+	* Turn all power pins to Hi-Z
+	*/
+	debug ("PCMCIA power OFF\n");
+	cfg_ports ();	/* Enables switch, but all in Hi-Z */
+
+	sreg  = immap->im_ioport.iop_pcdat;
+	sreg |= TPS2211_VPPD0 | TPS2211_VPPD1;		/* VAVPP always Hi-Z */
+
+	switch(vcc) {
+		case  0: 			break;	/* Switch off		*/
+		case 33: sreg |=  TPS2211_VCCD0;	/* Switch on 3.3V	*/
+		sreg &= ~TPS2211_VCCD1;
+		break;
+		case 50: sreg &= ~TPS2211_VCCD0;	/* Switch on 5.0V	*/
+		sreg |=  TPS2211_VCCD1;
+		break;
+		default: 			goto done;
+	}
+
+	/* Checking supported voltages */
+
+	debug ("PIPR: 0x%x --> %s\n",
+	       pcmp->pcmc_pipr,
+	       (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
+
+	immap->im_ioport.iop_pcdat = sreg;
+
+#ifdef DEBUG
+{
+	char *s;
+
+	if ((sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) {
+		s = "at 3.3V";
+	} else if (!(sreg & TPS2211_VCCD0) &&  (sreg & TPS2211_VCCD1)) {
+		s = "at 5.0V";
+	} else {
+		s = "down";
+	}
+	printf ("PCMCIA powered %s\n", s);
+}
+#endif
+
+done:
+	debug ("Enable PCMCIA buffers and stop RESET\n");
+	reg  =  PCMCIA_PGCRX(_slot_);
+	reg &= ~__MY_PCMCIA_GCRX_CXRESET;	/* active high */
+	reg &= ~__MY_PCMCIA_GCRX_CXOE;		/* active low  */
+	PCMCIA_PGCRX(_slot_) = reg;
+	udelay(500);
+
+	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
+	       slot+'A');
+	return (0);
+}
+
+#endif	/* CONFIG_PCMCIA */