[people/ms/u-boot.git] / board / kup / common / pcmcia.c

#include <common.h>
#include <mpc8xx.h>
#include <pcmcia.h>

#undef	CONFIG_PCMCIA

#if defined(CONFIG_CMD_PCMCIA)
#define	CONFIG_PCMCIA
#endif

#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
#define	CONFIG_PCMCIA
#endif

#ifdef	CONFIG_PCMCIA

#define PCMCIA_BOARD_MSG "KUP"

#define KUP4K_PCMCIA_B_3V3 (0x00020000)

int pcmcia_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 *)CONFIG_SYS_IMMR;
	sysp  = (sysconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_siu_conf));
	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));

	/*
	* 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(2500);

	/*
	* Configure Port B pins for
	* 3 Volts enable
	*/
	if (slot) { /* Slot A is built-in */
		cp->cp_pbdir |=  KUP4K_PCMCIA_B_3V3;
		cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
		/* remove all power */
		cp->cp_pbdat |=  KUP4K_PCMCIA_B_3V3; /* active low */
	}
	/*
	* 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.
	*/
	printf("%s  Slot %c:", slot ? "" : "\n", 'A' + slot);
	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: NOT SUPPORTED !!!\n");
	} else {
		if(slot)
			cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
		puts (" 3.3V card found: ");
	}
#if 0
	/*  VCC switch error flag, PCMCIA slot INPACK_ pin */
	cp->cp_pbdir &= ~(0x0020 | 0x0010);
	cp->cp_pbpar &= ~(0x0020 | 0x0010);
	udelay(500000);
#endif
	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 defined(CONFIG_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 *)CONFIG_SYS_IMMR;
	pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));

	/* remove all power */
	if (slot)
		cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3;

	/* 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;

	udelay(10000);

	return (0);
}
#endif


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;

	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);

	if (!slot) /* Slot A is not configurable */
		return 0;

	immap = (immap_t *)CONFIG_SYS_IMMR;
	pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));

	/*
	* 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);

	debug ("PCMCIA power OFF\n");
	/*
	* Configure Port B pins for
	* 3 Volts enable
	*/
	cp->cp_pbdir |=  KUP4K_PCMCIA_B_3V3;
	cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
	/* remove all power */
	cp->cp_pbdat |=  KUP4K_PCMCIA_B_3V3; /* active low */

	switch(vcc) {
		case  0:		break;
		case 33:
			cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
			debug ("PCMCIA powered at 3.3V\n");
			break;
		case 50:
			debug ("PCMCIA: 5Volt vcc not supported\n");
			break;
		default:
			puts("PCMCIA: vcc not supported");
			break;
	}
	udelay(10000);
	/* Checking supported voltages */

	debug ("PIPR: 0x%x --> %s\n",
	       pcmp->pcmc_pipr,
	       (pcmp->pcmc_pipr & (0x80000000 >> (slot << 4)))
			       ? "only 5 V --> NOT SUPPORTED"
	: "can do 3.3V");


	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 */
Commit	Line	Data
9d407995 WD	1	#include <common.h>
	2	#include <mpc8xx.h>
	3	#include <pcmcia.h>
	4
	5	#undef CONFIG_PCMCIA
	6
c508a4ce	7	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	8	#define CONFIG_PCMCIA
	9	#endif
	10
c508a4ce	11	#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
9d407995 WD	12	#define CONFIG_PCMCIA
	13	#endif
	14
	15	#ifdef CONFIG_PCMCIA
	16
	17	#define PCMCIA_BOARD_MSG "KUP"
	18
	19	#define KUP4K_PCMCIA_B_3V3 (0x00020000)
	20
	21	int pcmcia_hardware_enable(int slot)
	22	{
	23	volatile immap_t *immap;
	24	volatile cpm8xx_t *cp;
	25	volatile pcmconf8xx_t *pcmp;
	26	volatile sysconf8xx_t *sysp;
	27	uint reg, mask;
	28
	29	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	30
	31	udelay(10000);
	32
6d0f6bcf JCPV	33	immap = (immap_t *)CONFIG_SYS_IMMR;
	34	sysp = (sysconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_siu_conf));
	35	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
	36	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	37
	38	/*
	39	* Configure SIUMCR to enable PCMCIA port B
	40	* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
	41	*/
	42	sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
	43
	44	/* clear interrupt state, and disable interrupts */
	45	pcmp->pcmc_pscr = PCMCIA_MASK(slot);
	46	pcmp->pcmc_per &= ~PCMCIA_MASK(slot);
	47
	48	/*
	49	* Disable interrupts, DMA, and PCMCIA buffers
	50	* (isolate the interface) and assert RESET signal
	51	*/
	52	debug ("Disable PCMCIA buffers and assert RESET\n");
	53	reg = 0;
	54	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	55	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	56	PCMCIA_PGCRX(slot) = reg;
	57	udelay(2500);
	58
	59	/*
	60	* Configure Port B pins for
	61	* 3 Volts enable
	62	*/
	63	if (slot) { /* Slot A is built-in */
	64	cp->cp_pbdir \|= KUP4K_PCMCIA_B_3V3;
	65	cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
	66	/* remove all power */
	67	cp->cp_pbdat \|= KUP4K_PCMCIA_B_3V3; /* active low */
	68	}
	69	/*
	70	* Make sure there is a card in the slot, then configure the interface.
	71	*/
	72	udelay(10000);
	73	debug ("[%d] %s: PIPR(%p)=0x%x\n",
	74	__LINE__,__FUNCTION__,
	75	&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
	76	if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
	77	printf (" No Card found\n");
	78	return (1);
	79	}
	80
	81	/*
	82	* Power On.
	83	*/
	84	printf("%s Slot %c:", slot ? "" : "\n", 'A' + slot);
	85	mask = PCMCIA_VS1(slot) \| PCMCIA_VS2(slot);
	86	reg = pcmp->pcmc_pipr;
	87	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
	88	reg,
	89	(reg&PCMCIA_VS1(slot))?"n":"ff",
	90	(reg&PCMCIA_VS2(slot))?"n":"ff");
	91	if ((reg & mask) == mask) {
	92	puts (" 5.0V card found: NOT SUPPORTED !!!\n");
	93	} else {
	94	if(slot)
	95	cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
	96	puts (" 3.3V card found: ");
	97	}
	98	#if 0
	99	/* VCC switch error flag, PCMCIA slot INPACK_ pin */
	100	cp->cp_pbdir &= ~(0x0020 \| 0x0010);
101	cp->cp_pbpar &= ~(0x0020 \| 0x0010);
102	udelay(500000);
103	#endif
104	debug ("Enable PCMCIA buffers and stop RESET\n");
105	reg = PCMCIA_PGCRX(slot);
106	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
107	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
108	PCMCIA_PGCRX(slot) = reg;
109
110	udelay(250000); /* some cards need >150 ms to come up :-( */
111
112	debug ("# hardware_enable done\n");
113
114	return (0);
115	}
116
117
c508a4ce	118	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	119	int pcmcia_hardware_disable(int slot)
	120	{
	121	volatile immap_t *immap;
	122	volatile cpm8xx_t *cp;
	123	volatile pcmconf8xx_t *pcmp;
	124	u_long reg;
	125
	126	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	127
6d0f6bcf JCPV	128	immap = (immap_t *)CONFIG_SYS_IMMR;
	129	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
	130	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	131
	132	/* remove all power */
	133	if (slot)
	134	cp->cp_pbdat \|= KUP4K_PCMCIA_B_3V3;
	135
	136	/* Configure PCMCIA General Control Register */
	137	debug ("Disable PCMCIA buffers and assert RESET\n");
	138	reg = 0;
	139	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	140	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	141	PCMCIA_PGCRX(slot) = reg;
	142
	143	udelay(10000);
	144
	145	return (0);
	146	}
d39b5741	147	#endif
9d407995 WD	148
	149
	150	int pcmcia_voltage_set(int slot, int vcc, int vpp)
	151	{
	152	volatile immap_t *immap;
	153	volatile cpm8xx_t *cp;
	154	volatile pcmconf8xx_t *pcmp;
	155	u_long reg;
	156
	157	debug ("voltage_set: " \
	158	PCMCIA_BOARD_MSG \
	159	" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
	160	'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
	161
	162	if (!slot) /* Slot A is not configurable */
	163	return 0;
	164
6d0f6bcf JCPV	165	immap = (immap_t *)CONFIG_SYS_IMMR;
	166	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
	167	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	168
	169	/*
	170	* Disable PCMCIA buffers (isolate the interface)
	171	* and assert RESET signal
	172	*/
	173	debug ("Disable PCMCIA buffers and assert RESET\n");
	174	reg = PCMCIA_PGCRX(slot);
	175	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	176	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	177	PCMCIA_PGCRX(slot) = reg;
	178	udelay(500);
	179
	180	debug ("PCMCIA power OFF\n");
	181	/*
	182	* Configure Port B pins for
	183	* 3 Volts enable
	184	*/
	185	cp->cp_pbdir \|= KUP4K_PCMCIA_B_3V3;
	186	cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
	187	/* remove all power */
	188	cp->cp_pbdat \|= KUP4K_PCMCIA_B_3V3; /* active low */
	189
	190	switch(vcc) {
53677ef1	191	case 0: break;
9d407995 WD	192	case 33:
	193	cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
	194	debug ("PCMCIA powered at 3.3V\n");
	195	break;
	196	case 50:
	197	debug ("PCMCIA: 5Volt vcc not supported\n");
	198	break;
	199	default:
	200	puts("PCMCIA: vcc not supported");
	201	break;
	202	}
	203	udelay(10000);
	204	/* Checking supported voltages */
	205
	206	debug ("PIPR: 0x%x --> %s\n",
	207	pcmp->pcmc_pipr,
	208	(pcmp->pcmc_pipr & (0x80000000 >> (slot << 4)))
	209	? "only 5 V --> NOT SUPPORTED"
	210	: "can do 3.3V");
	211
	212
	213	debug ("Enable PCMCIA buffers and stop RESET\n");
	214	reg = PCMCIA_PGCRX(slot);
	215	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
	216	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
	217	PCMCIA_PGCRX(slot) = reg;
	218	udelay(500);
	219
	220	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
	221	slot+'A');
	222	return (0);
	223	}
	224
	225	#endif /* CONFIG_PCMCIA */