mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-30 08:03:32 +08:00
d39b574158
Fixed some broken instances of "#ifdef CMD_CFG_IDE" too. Those always evaluated TRUE, and thus were always compiled even when IDE really wasn't defined/wanted. Signed-off-by: Jon Loeliger <jdl@freescale.com>
241 lines
5.9 KiB
C
241 lines
5.9 KiB
C
#include <common.h>
|
|
#include <mpc8xx.h>
|
|
#include <pcmcia.h>
|
|
#include <i2c.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 "LWMON"
|
|
|
|
/* #define's for MAX1604 Power Switch */
|
|
#define MAX1604_OP_SUS 0x80
|
|
#define MAX1604_VCCBON 0x40
|
|
#define MAX1604_VCC_35 0x20
|
|
#define MAX1604_VCCBHIZ 0x10
|
|
#define MAX1604_VPPBON 0x08
|
|
#define MAX1604_VPPBPBPGM 0x04
|
|
#define MAX1604_VPPBHIZ 0x02
|
|
/* reserved 0x01 */
|
|
|
|
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;
|
|
uchar val;
|
|
|
|
|
|
debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
|
|
|
|
/* Switch on PCMCIA port in PIC register 0x60 */
|
|
reg = pic_read (0x60);
|
|
debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
|
|
reg &= ~0x10;
|
|
/* reg |= 0x08; Vpp not needed */
|
|
pic_write (0x60, reg);
|
|
#ifdef DEBUG
|
|
reg = pic_read (0x60);
|
|
printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
|
|
#endif
|
|
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 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.
|
|
*/
|
|
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) {
|
|
val = 0; /* VCCB3/5 = 0 ==> use Vx = 5.0 V */
|
|
puts (" 5.0V card found: ");
|
|
} else {
|
|
val = MAX1604_VCC_35; /* VCCB3/5 = 1 ==> use Vy = 3.3 V */
|
|
puts (" 3.3V card found: ");
|
|
}
|
|
|
|
/* switch VCC on */
|
|
val |= MAX1604_OP_SUS | MAX1604_VCCBON;
|
|
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
|
|
i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1);
|
|
|
|
udelay(500000);
|
|
|
|
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;
|
|
uchar val;
|
|
|
|
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));
|
|
|
|
/* remove all power, put output in high impedance state */
|
|
val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ;
|
|
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
|
|
i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1);
|
|
|
|
/* 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;
|
|
|
|
/* Switch off PCMCIA port in PIC register 0x60 */
|
|
reg = pic_read (0x60);
|
|
debug ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
|
|
reg |= 0x10;
|
|
reg &= ~0x08;
|
|
pic_write (0x60, reg);
|
|
#ifdef DEBUG
|
|
reg = pic_read (0x60);
|
|
printf ("[%d] PIC read: reg_60 = 0x%02x\n", __LINE__, reg);
|
|
#endif
|
|
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;
|
|
uchar val;
|
|
|
|
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 */
|
|
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
|
|
PCMCIA_PGCRX(_slot_) = reg;
|
|
udelay(500);
|
|
|
|
/*
|
|
* Turn off all power (switch to high impedance)
|
|
*/
|
|
debug ("PCMCIA power OFF\n");
|
|
val = MAX1604_VCCBHIZ | MAX1604_VPPBHIZ;
|
|
i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
|
|
i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1);
|
|
|
|
val = 0;
|
|
switch(vcc) {
|
|
case 0: break;
|
|
case 33: val = MAX1604_VCC_35; break;
|
|
case 50: 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");
|
|
|
|
i2c_write (CFG_I2C_POWER_A_ADDR, 0, 0, &val, 1);
|
|
if (val) {
|
|
debug ("PCMCIA powered at %sV\n",
|
|
(val & MAX1604_VCC_35) ? "3.3" : "5.0");
|
|
} else {
|
|
debug ("PCMCIA powered down\n");
|
|
}
|
|
|
|
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 */
|