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#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 "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)
{
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);
}
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 *)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 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 *)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
int pcmcia_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);
}
#endif /* CONFIG_PCMCIA */
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