cmd_pcmcia.c

		" 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;
	set_vppd(0, 1); set_vppd(1, 1);

	switch(vcc) {
	case  0:
		break;	/* Switch off		*/

	case 33:
		set_vccd(0, 1); set_vccd(1, 0);
		break;

	case 50:
		set_vccd(0, 0); set_vccd(1, 1);
		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");

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);
}

static void cfg_ports (void)
{
	volatile immap_t	*immap;
	volatile cpm8xx_t	*cp;

	immap = (immap_t *)CFG_IMMR;
	cp    = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));


	cfg_vppd(0); cfg_vppd(1);	/* VPPD0,VPPD1 VAVPP => Hi-Z */
	cfg_vccd(0); cfg_vccd(1);	/* 3V and 5V off */
	cfg_shdn();
	cfg_oc();

	/*
	 * Configure Port A for TPS2211 PC-Card Power-Interface Switch
	 *
	 * Switch off all voltages, assert shutdown
	 */
	set_vppd(0, 1); set_vppd(1, 1);
	set_vccd(0, 0); set_vccd(1, 0);
	set_shdn(1);

	udelay(100000);
}

#endif	/* NETTA */


/* -------------------------------------------------------------------- */
/* UC100 Boards                                          		*/
/* -------------------------------------------------------------------- */

#if defined(CONFIG_UC100)

#define PCMCIA_BOARD_MSG "UC100"

/*
 * Remark: don't turn off OE "__MY_PCMCIA_GCRX_CXOE" on UC100 board.
 *         This leads to board-hangup! (sr, 8 Dez. 2004)
 */

static void cfg_ports (void);

static int hardware_enable(int slot)
{
	volatile immap_t	*immap;
	volatile cpm8xx_t	*cp;
	volatile pcmconf8xx_t	*pcmp;
	volatile sysconf8xx_t	*sysp;
	uint reg, mask;

	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 */
	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.
	 */
	mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
	reg  = pcmp->pcmc_pipr;
	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
		reg,
		(reg&PCMCIA_VS1(slot))?"n":"ff",
		(reg&PCMCIA_VS2(slot))?"n":"ff");
	if ((reg & mask) == mask) {
		puts (" 5.0V card found: ");
	} else {
		puts (" 3.3V card found: ");
	}

	/*  switch VCC on */
	immap->im_ioport.iop_padat |= 0x8000; /* power enable 3.3V */

	udelay(10000);

	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)
static int 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));

	/* switch VCC off */
	immap->im_ioport.iop_padat &= ~0x8000; /* power disable 3.3V */

	/* Configure PCMCIA General Control Register */
	debug ("Disable PCMCIA buffers and assert RESET\n");
	reg  = 0;
	reg |= __MY_PCMCIA_GCRX_CXRESET;	/* active high */
	PCMCIA_PGCRX(_slot_) = reg;

	udelay(10000);

	return (0);
}
#endif	/* CFG_CMD_PCMCIA */


static int voltage_set(int slot, int vcc, int vpp)
{
	volatile immap_t	*immap;
	volatile pcmconf8xx_t	*pcmp;
	u_long reg;

	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;
	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 */
	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 */

	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);
}

static void cfg_ports (void)
{
	volatile immap_t	*immap;

	immap = (immap_t *)CFG_IMMR;

	/*
	 * Configure Port A for MAX1602 PC-Card Power-Interface Switch
	 */
	immap->im_ioport.iop_padat &= ~0x8000;	/* set port x output to low */
	immap->im_ioport.iop_padir |= 0x8000;	/* enable port x as output */

	debug ("Set Port A: PAR: %08x DIR: %08x DAT: %08x\n",
	       immap->im_ioport.iop_papar, immap->im_ioport.iop_padir,
	       immap->im_ioport.iop_padat);
}

#endif	/* UC100 */


/* -------------------------------------------------------------------- */

#endif /* CFG_CMD_PCMCIA || (CFG_CMD_IDE && CONFIG_IDE_8xx_PCCARD) */

/**************************************************/

#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
U_BOOT_CMD(
	pinit,	2,	1,	do_pinit,
	"pinit   - PCMCIA sub-system\n",
	"on  - power on PCMCIA socket\n"
	"pinit off - power off PCMCIA socket\n"
);
#endif