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git.ipfire.org Git - people/ms/u-boot.git/blob - board/netta/pcmcia.c
7 #if defined(CONFIG_CMD_PCMCIA)
11 #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
17 /* some sane bit macros */
18 #define _BD(_b) (1U << (31-(_b)))
19 #define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))
21 #define _BW(_b) (1U << (15-(_b)))
22 #define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))
24 #define _BB(_b) (1U << (7-(_b)))
25 #define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))
27 #define _B(_b) _BD(_b)
28 #define _BR(_l, _h) _BDR(_l, _h)
30 #define PCMCIA_BOARD_MSG "NETTA"
32 static const unsigned short vppd_masks
[2] = { _BW(14), _BW(15) };
34 static void cfg_vppd(int no
)
36 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
39 if ((unsigned int)no
>= sizeof(vppd_masks
)/sizeof(vppd_masks
[0]))
42 mask
= vppd_masks
[no
];
44 immap
->im_ioport
.iop_papar
&= ~mask
;
45 immap
->im_ioport
.iop_paodr
&= ~mask
;
46 immap
->im_ioport
.iop_padir
|= mask
;
49 static void set_vppd(int no
, int what
)
51 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
54 if ((unsigned int)no
>= sizeof(vppd_masks
)/sizeof(vppd_masks
[0]))
57 mask
= vppd_masks
[no
];
60 immap
->im_ioport
.iop_padat
|= mask
;
62 immap
->im_ioport
.iop_padat
&= ~mask
;
65 static const unsigned short vccd_masks
[2] = { _BW(10), _BW(6) };
67 static void cfg_vccd(int no
)
69 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
72 if ((unsigned int)no
>= sizeof(vccd_masks
)/sizeof(vccd_masks
[0]))
75 mask
= vccd_masks
[no
];
77 immap
->im_ioport
.iop_papar
&= ~mask
;
78 immap
->im_ioport
.iop_paodr
&= ~mask
;
79 immap
->im_ioport
.iop_padir
|= mask
;
82 static void set_vccd(int no
, int what
)
84 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
87 if ((unsigned int)no
>= sizeof(vccd_masks
)/sizeof(vccd_masks
[0]))
90 mask
= vccd_masks
[no
];
93 immap
->im_ioport
.iop_padat
|= mask
;
95 immap
->im_ioport
.iop_padat
&= ~mask
;
98 static const unsigned short oc_mask
= _BW(8);
100 static void cfg_oc(void)
102 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
103 unsigned short mask
= oc_mask
;
105 immap
->im_ioport
.iop_pcdir
&= ~mask
;
106 immap
->im_ioport
.iop_pcso
&= ~mask
;
107 immap
->im_ioport
.iop_pcint
&= ~mask
;
108 immap
->im_ioport
.iop_pcpar
&= ~mask
;
111 static int get_oc(void)
113 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
114 unsigned short mask
= oc_mask
;
117 what
= !!(immap
->im_ioport
.iop_pcdat
& mask
);;
121 static const unsigned short shdn_mask
= _BW(12);
123 static void cfg_shdn(void)
125 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
130 immap
->im_ioport
.iop_papar
&= ~mask
;
131 immap
->im_ioport
.iop_paodr
&= ~mask
;
132 immap
->im_ioport
.iop_padir
|= mask
;
135 static void set_shdn(int what
)
137 volatile immap_t
*immap
= (immap_t
*)CONFIG_SYS_IMMR
;
143 immap
->im_ioport
.iop_padat
|= mask
;
145 immap
->im_ioport
.iop_padat
&= ~mask
;
148 static void cfg_ports (void)
150 volatile immap_t
*immap
;
151 volatile cpm8xx_t
*cp
;
153 immap
= (immap_t
*)CONFIG_SYS_IMMR
;
154 cp
= (cpm8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_cpm
));
157 cfg_vppd(0); cfg_vppd(1); /* VPPD0,VPPD1 VAVPP => Hi-Z */
158 cfg_vccd(0); cfg_vccd(1); /* 3V and 5V off */
163 * Configure Port A for TPS2211 PC-Card Power-Interface Switch
165 * Switch off all voltages, assert shutdown
167 set_vppd(0, 1); set_vppd(1, 1);
168 set_vccd(0, 0); set_vccd(1, 0);
174 int pcmcia_hardware_enable(int slot
)
176 volatile immap_t
*immap
;
177 volatile cpm8xx_t
*cp
;
178 volatile pcmconf8xx_t
*pcmp
;
179 volatile sysconf8xx_t
*sysp
;
180 uint reg
, pipr
, mask
;
183 debug ("hardware_enable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
187 immap
= (immap_t
*)CONFIG_SYS_IMMR
;
188 sysp
= (sysconf8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_siu_conf
));
189 pcmp
= (pcmconf8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_pcmcia
));
190 cp
= (cpm8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_cpm
));
192 /* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
195 /* clear interrupt state, and disable interrupts */
196 pcmp
->pcmc_pscr
= PCMCIA_MASK(_slot_
);
197 pcmp
->pcmc_per
&= ~PCMCIA_MASK(_slot_
);
200 * Disable interrupts, DMA, and PCMCIA buffers
201 * (isolate the interface) and assert RESET signal
203 debug ("Disable PCMCIA buffers and assert RESET\n");
205 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
206 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
207 PCMCIA_PGCRX(_slot_
) = reg
;
212 * Make sure there is a card in the slot, then configure the interface.
215 debug ("[%d] %s: PIPR(%p)=0x%x\n",
216 __LINE__
,__FUNCTION__
,
217 &(pcmp
->pcmc_pipr
),pcmp
->pcmc_pipr
);
218 if (pcmp
->pcmc_pipr
& (0x18000000 >> (slot
<< 4))) {
219 printf (" No Card found\n");
224 * Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
226 mask
= PCMCIA_VS1(slot
) | PCMCIA_VS2(slot
);
227 pipr
= pcmp
->pcmc_pipr
;
228 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
230 (reg
&PCMCIA_VS1(slot
))?"n":"ff",
231 (reg
&PCMCIA_VS2(slot
))?"n":"ff");
233 if ((pipr
& mask
) == mask
) {
234 set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
235 set_vccd(0, 0); set_vccd(1, 1); /* 5V on, 3V off */
236 puts (" 5.0V card found: ");
238 set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
239 set_vccd(0, 1); set_vccd(1, 0); /* 5V off, 3V on */
240 puts (" 3.3V card found: ");
243 /* Wait 500 ms; use this to check for over-current */
244 for (i
=0; i
<5000; ++i
) {
246 printf (" *** Overcurrent - Safety shutdown ***\n");
247 set_vccd(0, 0); set_vccd(1, 0); /* VAVPP => Hi-Z */
253 debug ("Enable PCMCIA buffers and stop RESET\n");
254 reg
= PCMCIA_PGCRX(_slot_
);
255 reg
&= ~__MY_PCMCIA_GCRX_CXRESET
; /* active high */
256 reg
&= ~__MY_PCMCIA_GCRX_CXOE
; /* active low */
257 PCMCIA_PGCRX(_slot_
) = reg
;
259 udelay(250000); /* some cards need >150 ms to come up :-( */
261 debug ("# hardware_enable done\n");
267 #if defined(CONFIG_CMD_PCMCIA)
268 int pcmcia_hardware_disable(int slot
)
270 volatile immap_t
*immap
;
271 volatile pcmconf8xx_t
*pcmp
;
274 debug ("hardware_disable: " PCMCIA_BOARD_MSG
" Slot %c\n", 'A'+slot
);
276 immap
= (immap_t
*)CONFIG_SYS_IMMR
;
277 pcmp
= (pcmconf8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_pcmcia
));
279 /* Configure PCMCIA General Control Register */
280 debug ("Disable PCMCIA buffers and assert RESET\n");
282 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
283 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
284 PCMCIA_PGCRX(_slot_
) = reg
;
286 /* All voltages off / Hi-Z */
287 set_vppd(0, 1); set_vppd(1, 1);
288 set_vccd(0, 1); set_vccd(1, 1);
297 int pcmcia_voltage_set(int slot
, int vcc
, int vpp
)
299 volatile immap_t
*immap
;
300 volatile cpm8xx_t
*cp
;
301 volatile pcmconf8xx_t
*pcmp
;
305 debug ("voltage_set: "
307 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
308 'A'+slot
, vcc
/10, vcc
%10, vpp
/10, vcc
%10);
310 immap
= (immap_t
*)CONFIG_SYS_IMMR
;
311 cp
= (cpm8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_cpm
));
312 pcmp
= (pcmconf8xx_t
*)(&(((immap_t
*)CONFIG_SYS_IMMR
)->im_pcmcia
));
314 * Disable PCMCIA buffers (isolate the interface)
315 * and assert RESET signal
317 debug ("Disable PCMCIA buffers and assert RESET\n");
318 reg
= PCMCIA_PGCRX(_slot_
);
319 reg
|= __MY_PCMCIA_GCRX_CXRESET
; /* active high */
320 reg
|= __MY_PCMCIA_GCRX_CXOE
; /* active low */
321 PCMCIA_PGCRX(_slot_
) = reg
;
325 * Configure Port C pins for
326 * 5 Volts Enable and 3 Volts enable,
327 * Turn all power pins to Hi-Z
329 debug ("PCMCIA power OFF\n");
330 cfg_ports (); /* Enables switch, but all in Hi-Z */
332 sreg
= immap
->im_ioport
.iop_pcdat
;
333 set_vppd(0, 1); set_vppd(1, 1);
337 break; /* Switch off */
340 set_vccd(0, 1); set_vccd(1, 0);
344 set_vccd(0, 0); set_vccd(1, 1);
351 /* Checking supported voltages */
353 debug ("PIPR: 0x%x --> %s\n",
355 (pcmp
->pcmc_pipr
& 0x00008000) ? "only 5 V" : "can do 3.3V");
358 debug ("Enable PCMCIA buffers and stop RESET\n");
359 reg
= PCMCIA_PGCRX(_slot_
);
360 reg
&= ~__MY_PCMCIA_GCRX_CXRESET
; /* active high */
361 reg
&= ~__MY_PCMCIA_GCRX_CXOE
; /* active low */
362 PCMCIA_PGCRX(_slot_
) = reg
;
365 debug ("voltage_set: " PCMCIA_BOARD_MSG
" Slot %c, DONE\n",
370 #endif /* CONFIG_PCMCIA */