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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
/* some sane bit macros */
#define _BD(_b) (1U << (31-(_b)))
#define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))
#define _BW(_b) (1U << (15-(_b)))
#define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))
#define _BB(_b) (1U << (7-(_b)))
#define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))
#define _B(_b) _BD(_b)
#define _BR(_l, _h) _BDR(_l, _h)
#define PCMCIA_BOARD_MSG "NETTA"
static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) };
static void cfg_vppd(int no)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
return;
mask = vppd_masks[no];
immap->im_ioport.iop_papar &= ~mask;
immap->im_ioport.iop_paodr &= ~mask;
immap->im_ioport.iop_padir |= mask;
}
static void set_vppd(int no, int what)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
return;
mask = vppd_masks[no];
if (what)
immap->im_ioport.iop_padat |= mask;
else
immap->im_ioport.iop_padat &= ~mask;
}
static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) };
static void cfg_vccd(int no)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
return;
mask = vccd_masks[no];
immap->im_ioport.iop_papar &= ~mask;
immap->im_ioport.iop_paodr &= ~mask;
immap->im_ioport.iop_padir |= mask;
}
static void set_vccd(int no, int what)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
return;
mask = vccd_masks[no];
if (what)
immap->im_ioport.iop_padat |= mask;
else
immap->im_ioport.iop_padat &= ~mask;
}
static const unsigned short oc_mask = _BW(8);
static void cfg_oc(void)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask = oc_mask;
immap->im_ioport.iop_pcdir &= ~mask;
immap->im_ioport.iop_pcso &= ~mask;
immap->im_ioport.iop_pcint &= ~mask;
immap->im_ioport.iop_pcpar &= ~mask;
}
static int get_oc(void)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask = oc_mask;
int what;
what = !!(immap->im_ioport.iop_pcdat & mask);;
return what;
}
static const unsigned short shdn_mask = _BW(12);
static void cfg_shdn(void)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
mask = shdn_mask;
immap->im_ioport.iop_papar &= ~mask;
immap->im_ioport.iop_paodr &= ~mask;
immap->im_ioport.iop_padir |= mask;
}
static void set_shdn(int what)
{
volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
unsigned short mask;
mask = shdn_mask;
if (what)
immap->im_ioport.iop_padat |= mask;
else
immap->im_ioport.iop_padat &= ~mask;
}
static void cfg_ports (void)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
immap = (immap_t *)CONFIG_SYS_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_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);
}
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;
int i;
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 Ports for TPS2211A PC-Card Power-Interface Switch */
cfg_ports ();
/* 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");
if ((pipr & mask) == mask) {
set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
set_vccd(0, 0); set_vccd(1, 1); /* 5V on, 3V off */
puts (" 5.0V card found: ");
} else {
set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
set_vccd(0, 1); set_vccd(1, 0); /* 5V off, 3V on */
puts (" 3.3V card found: ");
}
/* Wait 500 ms; use this to check for over-current */
for (i=0; i<5000; ++i) {
if (!get_oc()) {
printf (" *** Overcurrent - Safety shutdown ***\n");
set_vccd(0, 0); set_vccd(1, 0); /* VAVPP => Hi-Z */
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 defined(CONFIG_CMD_PCMCIA)
int pcmcia_hardware_disable(int slot)
{
volatile immap_t *immap;
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));
/* 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 */
set_vppd(0, 1); set_vppd(1, 1);
set_vccd(0, 1); set_vccd(1, 1);
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;
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 *)CONFIG_SYS_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_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);
}
#endif /* CONFIG_PCMCIA */
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