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git.ipfire.org Git - people/ms/u-boot.git/blob - board/mbx8xx/pcmcia.c
9 #if defined(CONFIG_CMD_PCMCIA)
13 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
19 /* A lot of this has been taken from the RPX code in this file it works from me.
20 I have added the voltage selection for the MBX board. */
22 /* MBX voltage bit in control register #2 */
23 #define CR2_VPP12 ((uchar)0x10)
24 #define CR2_VPPVDD ((uchar)0x20)
25 #define CR2_VDD5 ((uchar)0x40)
26 #define CR2_VDD3 ((uchar)0x80)
28 #define PCMCIA_BOARD_MSG "MBX860"
30 int pcmcia_voltage_set (int slot
, int vcc
, int vpp
)
34 debug ("voltage_set: PCMCIA_BOARD_MSG Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
35 'A' + slot
, vcc
/ 10, vcc
% 10, vpp
/ 10, vcc
% 10);
68 /* first, turn off all power */
69 MBX_CSR2
&= ~(CR2_VDDSEL
| CR2_VPPSEL
);
71 /* enable new powersettings */
73 debug ("MBX_CSR2 read = 0x%02x\n", MBX_CSR2
);
78 int pcmcia_hardware_enable (int slot
)
80 volatile immap_t
*immap
;
81 volatile cpm8xx_t
*cp
;
82 volatile pcmconf8xx_t
*pcmp
;
83 volatile sysconf8xx_t
*sysp
;
86 debug ("hardware_enable: " PCMCIA_BOARD_MSG
" Slot %c\n",
91 immap
= (immap_t
*) CONFIG_SYS_IMMR
;
92 sysp
= (sysconf8xx_t
*) (&(((immap_t
*) CONFIG_SYS_IMMR
)->im_siu_conf
));
93 pcmp
= (pcmconf8xx_t
*) (&(((immap_t
*) CONFIG_SYS_IMMR
)->im_pcmcia
));
94 cp
= (cpm8xx_t
*) (&(((immap_t
*) CONFIG_SYS_IMMR
)->im_cpm
));
96 /* clear interrupt state, and disable interrupts */
97 pcmp
->pcmc_pscr
= PCMCIA_MASK (_slot_
);
98 pcmp
->pcmc_per
&= ~PCMCIA_MASK (_slot_
);
101 * Disable interrupts, DMA, and PCMCIA buffers
102 * (isolate the interface) and assert RESET signal
104 debug ("Disable PCMCIA buffers and assert RESET\n");
106 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
107 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
108 PCMCIA_PGCRX (_slot_
) = reg
;
111 /* remove all power */
112 pcmcia_voltage_set (slot
, 0, 0);
114 * Make sure there is a card in the slot, then configure the interface.
117 debug ("[%d] %s: PIPR(%p)=0x%x\n",
118 __LINE__
,__FUNCTION__
,
119 &(pcmp
->pcmc_pipr
),pcmp
->pcmc_pipr
);
121 if (pcmp
->pcmc_pipr
& (0x18000000 >> (slot
<< 4))) {
123 if (pcmp
->pcmc_pipr
& (0x10000000 >> (slot
<< 4))) {
124 #endif /* CONFIG_HMI10 */
125 printf (" No Card found\n");
132 mask
= PCMCIA_VS1 (_slot_
) | PCMCIA_VS2 (_slot_
);
133 reg
= pcmp
->pcmc_pipr
;
134 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", reg
,
135 (reg
& PCMCIA_VS1 (slot
)) ? "n" : "ff",
136 (reg
& PCMCIA_VS2 (slot
)) ? "n" : "ff");
138 if ((reg
& mask
) == mask
) {
139 pcmcia_voltage_set (_slot_
, 50, 0);
140 printf (" 5.0V card found: ");
142 pcmcia_voltage_set (_slot_
, 33, 0);
143 printf (" 3.3V card found: ");
146 debug ("Enable PCMCIA buffers and stop RESET\n");
147 reg
= PCMCIA_PGCRX (_slot_
);
148 reg
&= ~__MY_PCMCIA_GCRX_CXRESET
; /* active high */
149 reg
&= ~__MY_PCMCIA_GCRX_CXOE
; /* active low */
150 PCMCIA_PGCRX (_slot_
) = reg
;
152 udelay (250000); /* some cards need >150 ms to come up :-( */
154 debug ("# hardware_enable done\n");
159 #if defined(CONFIG_CMD_PCMCIA)
160 int pcmcia_hardware_disable (int slot
)
162 return 0; /* No hardware to disable */
166 #endif /* CONFIG_PCMCIA */