2 * arch/m68k/mvme16x/config.c
4 * Copyright (C) 1995 Richard Hirst [richard@sleepie.demon.co.uk]
10 * Copyright (C) 1993 Hamish Macdonald
12 * This file is subject to the terms and conditions of the GNU General Public
13 * License. See the file README.legal in the main directory of this archive
17 #include <linux/types.h>
18 #include <linux/kernel.h>
20 #include <linux/seq_file.h>
21 #include <linux/tty.h>
22 #include <linux/console.h>
23 #include <linux/linkage.h>
24 #include <linux/init.h>
25 #include <linux/major.h>
26 #include <linux/genhd.h>
27 #include <linux/rtc.h>
28 #include <linux/interrupt.h>
29 #include <linux/module.h>
31 #include <asm/bootinfo.h>
32 #include <asm/bootinfo-vme.h>
33 #include <asm/byteorder.h>
34 #include <asm/pgtable.h>
35 #include <asm/setup.h>
37 #include <asm/traps.h>
38 #include <asm/machdep.h>
39 #include <asm/mvme16xhw.h>
41 extern t_bdid mvme_bdid
;
43 static MK48T08ptr_t
volatile rtc
= (MK48T08ptr_t
)MVME_RTC_BASE
;
45 static void mvme16x_get_model(char *model
);
46 extern void mvme16x_sched_init(irq_handler_t handler
);
47 extern u32
mvme16x_gettimeoffset(void);
48 extern int mvme16x_hwclk (int, struct rtc_time
*);
49 extern int mvme16x_set_clock_mmss (unsigned long);
50 extern void mvme16x_reset (void);
52 int bcd2int (unsigned char b
);
54 /* Save tick handler routine pointer, will point to xtime_update() in
55 * kernel/time/timekeeping.c, called via mvme16x_process_int() */
57 static irq_handler_t tick_handler
;
60 unsigned short mvme16x_config
;
61 EXPORT_SYMBOL(mvme16x_config
);
64 int __init
mvme16x_parse_bootinfo(const struct bi_record
*bi
)
66 uint16_t tag
= be16_to_cpu(bi
->tag
);
67 if (tag
== BI_VME_TYPE
|| tag
== BI_VME_BRDINFO
)
73 void mvme16x_reset(void)
75 pr_info("\r\n\nCalled mvme16x_reset\r\n"
76 "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
77 /* The string of returns is to delay the reset until the whole
78 * message is output. Assert reset bit in GCSR */
79 *(volatile char *)0xfff40107 = 0x80;
82 static void mvme16x_get_model(char *model
)
84 p_bdid p
= &mvme_bdid
;
87 suf
[1] = p
->brdsuffix
[0];
88 suf
[2] = p
->brdsuffix
[1];
90 suf
[0] = suf
[1] ? '-' : '\0';
92 sprintf(model
, "Motorola MVME%x%s", be16_to_cpu(p
->brdno
), suf
);
96 static void mvme16x_get_hardware_list(struct seq_file
*m
)
98 uint16_t brdno
= be16_to_cpu(mvme_bdid
.brdno
);
100 if (brdno
== 0x0162 || brdno
== 0x0172)
102 unsigned char rev
= *(unsigned char *)MVME162_VERSION_REG
;
104 seq_printf (m
, "VMEchip2 %spresent\n",
105 rev
& MVME16x_CONFIG_NO_VMECHIP2
? "NOT " : "");
106 seq_printf (m
, "SCSI interface %spresent\n",
107 rev
& MVME16x_CONFIG_NO_SCSICHIP
? "NOT " : "");
108 seq_printf (m
, "Ethernet i/f %spresent\n",
109 rev
& MVME16x_CONFIG_NO_ETHERNET
? "NOT " : "");
114 * This function is called during kernel startup to initialize
115 * the mvme16x IRQ handling routines. Should probably ensure
116 * that the base vectors for the VMEChip2 and PCCChip2 are valid.
119 static void __init
mvme16x_init_IRQ (void)
121 m68k_setup_user_interrupt(VEC_USER
, 192);
124 #define pcc2chip ((volatile u_char *)0xfff42000)
125 #define PccSCCMICR 0x1d
126 #define PccSCCTICR 0x1e
127 #define PccSCCRICR 0x1f
128 #define PccTPIACKR 0x25
130 #ifdef CONFIG_EARLY_PRINTK
132 /**** cd2401 registers ****/
133 #define CD2401_ADDR (0xfff45000)
135 #define CyGFRCR (0x81)
137 #define CyCLR_CHAN (0x40)
138 #define CyINIT_CHAN (0x20)
139 #define CyCHIP_RESET (0x10)
140 #define CyENB_XMTR (0x08)
141 #define CyDIS_XMTR (0x04)
142 #define CyENB_RCVR (0x02)
143 #define CyDIS_RCVR (0x01)
146 #define CyMdmCh (0x80)
147 #define CyRxExc (0x20)
148 #define CyRxData (0x08)
149 #define CyTxMpty (0x02)
150 #define CyTxRdy (0x01)
151 #define CyLICR (0x26)
152 #define CyRISR (0x89)
153 #define CyTIMEOUT (0x80)
154 #define CySPECHAR (0x70)
155 #define CyOVERRUN (0x08)
156 #define CyPARITY (0x04)
157 #define CyFRAME (0x02)
158 #define CyBREAK (0x01)
159 #define CyREOIR (0x84)
160 #define CyTEOIR (0x85)
161 #define CyMEOIR (0x86)
162 #define CyNOTRANS (0x08)
163 #define CyRFOC (0x30)
166 #define CyMISR (0x8b)
167 #define CyRISR (0x89)
168 #define CyTISR (0x8a)
169 #define CyMSVR1 (0xde)
170 #define CyMSVR2 (0xdf)
176 #define CyRTPRL (0x25)
177 #define CyRTPRH (0x24)
178 #define CyCOR1 (0x10)
179 #define CyPARITY_NONE (0x00)
180 #define CyPARITY_E (0x40)
181 #define CyPARITY_O (0xC0)
182 #define Cy_5_BITS (0x04)
183 #define Cy_6_BITS (0x05)
184 #define Cy_7_BITS (0x06)
185 #define Cy_8_BITS (0x07)
186 #define CyCOR2 (0x17)
188 #define CyCtsAE (0x02)
189 #define CyCOR3 (0x16)
190 #define Cy_1_STOP (0x02)
191 #define Cy_2_STOP (0x04)
192 #define CyCOR4 (0x15)
193 #define CyREC_FIFO (0x0F) /* Receive FIFO threshold */
194 #define CyCOR5 (0x14)
195 #define CyCOR6 (0x18)
196 #define CyCOR7 (0x07)
197 #define CyRBPR (0xcb)
198 #define CyRCOR (0xc8)
199 #define CyTBPR (0xc3)
200 #define CyTCOR (0xc0)
201 #define CySCHR1 (0x1f)
202 #define CySCHR2 (0x1e)
204 #define CyPILR1 (0xe3)
205 #define CyPILR2 (0xe0)
206 #define CyPILR3 (0xe1)
208 #define CyASYNC (0x02)
209 #define CyLICR (0x26)
210 #define CyLIVR (0x09)
211 #define CySCRL (0x23)
212 #define CySCRH (0x22)
213 #define CyTFTC (0x80)
215 void mvme16x_cons_write(struct console
*co
, const char *str
, unsigned count
)
217 volatile unsigned char *base_addr
= (u_char
*)CD2401_ADDR
;
218 volatile u_char sink
;
224 /* Ensure transmitter is enabled! */
227 base_addr
[CyCAR
] = (u_char
)port
;
228 while (base_addr
[CyCCR
])
230 base_addr
[CyCCR
] = CyENB_XMTR
;
232 ier
= base_addr
[CyIER
];
233 base_addr
[CyIER
] = CyTxMpty
;
236 if (pcc2chip
[PccSCCTICR
] & 0x20)
238 /* We have a Tx int. Acknowledge it */
239 sink
= pcc2chip
[PccTPIACKR
];
240 if ((base_addr
[CyLICR
] >> 2) == port
) {
242 /* Last char of string is now output */
243 base_addr
[CyTEOIR
] = CyNOTRANS
;
247 base_addr
[CyTDR
] = '\n';
252 else if (*str
== '\n') {
253 base_addr
[CyTDR
] = '\r';
257 base_addr
[CyTDR
] = *str
++;
260 base_addr
[CyTEOIR
] = 0;
263 base_addr
[CyTEOIR
] = CyNOTRANS
;
267 base_addr
[CyIER
] = ier
;
272 void __init
config_mvme16x(void)
274 p_bdid p
= &mvme_bdid
;
276 uint16_t brdno
= be16_to_cpu(p
->brdno
);
278 mach_max_dma_address
= 0xffffffff;
279 mach_sched_init
= mvme16x_sched_init
;
280 mach_init_IRQ
= mvme16x_init_IRQ
;
281 arch_gettimeoffset
= mvme16x_gettimeoffset
;
282 mach_hwclk
= mvme16x_hwclk
;
283 mach_set_clock_mmss
= mvme16x_set_clock_mmss
;
284 mach_reset
= mvme16x_reset
;
285 mach_get_model
= mvme16x_get_model
;
286 mach_get_hardware_list
= mvme16x_get_hardware_list
;
288 /* Report board revision */
290 if (strncmp("BDID", p
->bdid
, 4))
292 pr_crit("Bug call .BRD_ID returned garbage - giving up\n");
296 /* Board type is only set by newer versions of vmelilo/tftplilo */
297 if (vme_brdtype
== 0)
300 mvme16x_get_model(id
);
301 pr_info("BRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id
, p
->rev
>> 4,
302 p
->rev
& 0xf, p
->yr
, p
->mth
, p
->day
);
303 if (brdno
== 0x0162 || brdno
== 0x172)
305 unsigned char rev
= *(unsigned char *)MVME162_VERSION_REG
;
307 mvme16x_config
= rev
| MVME16x_CONFIG_GOT_SCCA
;
309 pr_info("MVME%x Hardware status:\n", brdno
);
310 pr_info(" CPU Type 68%s040\n",
311 rev
& MVME16x_CONFIG_GOT_FPU
? "" : "LC");
312 pr_info(" CPU clock %dMHz\n",
313 rev
& MVME16x_CONFIG_SPEED_32
? 32 : 25);
314 pr_info(" VMEchip2 %spresent\n",
315 rev
& MVME16x_CONFIG_NO_VMECHIP2
? "NOT " : "");
316 pr_info(" SCSI interface %spresent\n",
317 rev
& MVME16x_CONFIG_NO_SCSICHIP
? "NOT " : "");
318 pr_info(" Ethernet interface %spresent\n",
319 rev
& MVME16x_CONFIG_NO_ETHERNET
? "NOT " : "");
323 mvme16x_config
= MVME16x_CONFIG_GOT_LP
| MVME16x_CONFIG_GOT_CD2401
;
327 static irqreturn_t
mvme16x_abort_int (int irq
, void *dev_id
)
329 unsigned long *new = (unsigned long *)vectors
;
330 unsigned long *old
= (unsigned long *)0xffe00000;
331 volatile unsigned char uc
, *ucp
;
332 uint16_t brdno
= be16_to_cpu(mvme_bdid
.brdno
);
334 if (brdno
== 0x0162 || brdno
== 0x172)
336 ucp
= (volatile unsigned char *)0xfff42043;
342 *(volatile unsigned long *)0xfff40074 = 0x40000000;
344 *(new+4) = *(old
+4); /* Illegal instruction */
345 *(new+9) = *(old
+9); /* Trace */
346 *(new+47) = *(old
+47); /* Trap #15 */
348 if (brdno
== 0x0162 || brdno
== 0x172)
349 *(new+0x5e) = *(old
+0x5e); /* ABORT switch */
351 *(new+0x6e) = *(old
+0x6e); /* ABORT switch */
355 static irqreturn_t
mvme16x_timer_int (int irq
, void *dev_id
)
357 *(volatile unsigned char *)0xfff4201b |= 8;
358 return tick_handler(irq
, dev_id
);
361 void mvme16x_sched_init (irq_handler_t timer_routine
)
363 uint16_t brdno
= be16_to_cpu(mvme_bdid
.brdno
);
366 tick_handler
= timer_routine
;
367 /* Using PCCchip2 or MC2 chip tick timer 1 */
368 *(volatile unsigned long *)0xfff42008 = 0;
369 *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
370 *(volatile unsigned char *)0xfff42017 |= 3;
371 *(volatile unsigned char *)0xfff4201b = 0x16;
372 if (request_irq(MVME16x_IRQ_TIMER
, mvme16x_timer_int
, 0,
373 "timer", mvme16x_timer_int
))
374 panic ("Couldn't register timer int");
376 if (brdno
== 0x0162 || brdno
== 0x172)
377 irq
= MVME162_IRQ_ABORT
;
379 irq
= MVME167_IRQ_ABORT
;
380 if (request_irq(irq
, mvme16x_abort_int
, 0,
381 "abort", mvme16x_abort_int
))
382 panic ("Couldn't register abort int");
386 /* This is always executed with interrupts disabled. */
387 u32
mvme16x_gettimeoffset(void)
389 return (*(volatile u32
*)0xfff42008) * 1000;
392 int bcd2int (unsigned char b
)
394 return ((b
>>4)*10 + (b
&15));
397 int mvme16x_hwclk(int op
, struct rtc_time
*t
)
401 rtc
->ctrl
= RTC_READ
;
402 t
->tm_year
= bcd2int (rtc
->bcd_year
);
403 t
->tm_mon
= bcd2int (rtc
->bcd_mth
);
404 t
->tm_mday
= bcd2int (rtc
->bcd_dom
);
405 t
->tm_hour
= bcd2int (rtc
->bcd_hr
);
406 t
->tm_min
= bcd2int (rtc
->bcd_min
);
407 t
->tm_sec
= bcd2int (rtc
->bcd_sec
);
413 int mvme16x_set_clock_mmss (unsigned long nowtime
)