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>
39 #include <asm/machdep.h>
40 #include <asm/mvme16xhw.h>
42 extern t_bdid mvme_bdid;
44 static MK48T08ptr_t volatile rtc = (MK48T08ptr_t)MVME_RTC_BASE;
46 static void mvme16x_get_model(char *model);
47 extern void mvme16x_sched_init(irq_handler_t handler);
48 extern u32 mvme16x_gettimeoffset(void);
49 extern int mvme16x_hwclk (int, struct rtc_time *);
50 extern int mvme16x_set_clock_mmss (unsigned long);
51 extern void mvme16x_reset (void);
53 int bcd2int (unsigned char b);
55 /* Save tick handler routine pointer, will point to xtime_update() in
56 * kernel/time/timekeeping.c, called via mvme16x_process_int() */
58 static irq_handler_t tick_handler;
61 unsigned short mvme16x_config;
62 EXPORT_SYMBOL(mvme16x_config);
65 int __init mvme16x_parse_bootinfo(const struct bi_record *bi)
67 uint16_t tag = be16_to_cpu(bi->tag);
68 if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
74 void mvme16x_reset(void)
76 printk ("\r\n\nCalled mvme16x_reset\r\n"
77 "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
78 /* The string of returns is to delay the reset until the whole
79 * message is output. Assert reset bit in GCSR */
80 *(volatile char *)0xfff40107 = 0x80;
83 static void mvme16x_get_model(char *model)
85 p_bdid p = &mvme_bdid;
88 suf[1] = p->brdsuffix[0];
89 suf[2] = p->brdsuffix[1];
91 suf[0] = suf[1] ? '-' : '\0';
93 sprintf(model, "Motorola MVME%x%s", be16_to_cpu(p->brdno), suf);
97 static void mvme16x_get_hardware_list(struct seq_file *m)
99 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
101 if (brdno == 0x0162 || brdno == 0x0172)
103 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
105 seq_printf (m, "VMEchip2 %spresent\n",
106 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
107 seq_printf (m, "SCSI interface %spresent\n",
108 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
109 seq_printf (m, "Ethernet i/f %spresent\n",
110 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
115 * This function is called during kernel startup to initialize
116 * the mvme16x IRQ handling routines. Should probably ensure
117 * that the base vectors for the VMEChip2 and PCCChip2 are valid.
120 static void __init mvme16x_init_IRQ (void)
122 m68k_setup_user_interrupt(VEC_USER, 192);
125 #define pcc2chip ((volatile u_char *)0xfff42000)
126 #define PccSCCMICR 0x1d
127 #define PccSCCTICR 0x1e
128 #define PccSCCRICR 0x1f
129 #define PccTPIACKR 0x25
131 #ifdef CONFIG_EARLY_PRINTK
133 /**** cd2401 registers ****/
134 #define CD2401_ADDR (0xfff45000)
136 #define CyGFRCR (0x81)
138 #define CyCLR_CHAN (0x40)
139 #define CyINIT_CHAN (0x20)
140 #define CyCHIP_RESET (0x10)
141 #define CyENB_XMTR (0x08)
142 #define CyDIS_XMTR (0x04)
143 #define CyENB_RCVR (0x02)
144 #define CyDIS_RCVR (0x01)
147 #define CyMdmCh (0x80)
148 #define CyRxExc (0x20)
149 #define CyRxData (0x08)
150 #define CyTxMpty (0x02)
151 #define CyTxRdy (0x01)
152 #define CyLICR (0x26)
153 #define CyRISR (0x89)
154 #define CyTIMEOUT (0x80)
155 #define CySPECHAR (0x70)
156 #define CyOVERRUN (0x08)
157 #define CyPARITY (0x04)
158 #define CyFRAME (0x02)
159 #define CyBREAK (0x01)
160 #define CyREOIR (0x84)
161 #define CyTEOIR (0x85)
162 #define CyMEOIR (0x86)
163 #define CyNOTRANS (0x08)
164 #define CyRFOC (0x30)
167 #define CyMISR (0x8b)
168 #define CyRISR (0x89)
169 #define CyTISR (0x8a)
170 #define CyMSVR1 (0xde)
171 #define CyMSVR2 (0xdf)
177 #define CyRTPRL (0x25)
178 #define CyRTPRH (0x24)
179 #define CyCOR1 (0x10)
180 #define CyPARITY_NONE (0x00)
181 #define CyPARITY_E (0x40)
182 #define CyPARITY_O (0xC0)
183 #define Cy_5_BITS (0x04)
184 #define Cy_6_BITS (0x05)
185 #define Cy_7_BITS (0x06)
186 #define Cy_8_BITS (0x07)
187 #define CyCOR2 (0x17)
189 #define CyCtsAE (0x02)
190 #define CyCOR3 (0x16)
191 #define Cy_1_STOP (0x02)
192 #define Cy_2_STOP (0x04)
193 #define CyCOR4 (0x15)
194 #define CyREC_FIFO (0x0F) /* Receive FIFO threshold */
195 #define CyCOR5 (0x14)
196 #define CyCOR6 (0x18)
197 #define CyCOR7 (0x07)
198 #define CyRBPR (0xcb)
199 #define CyRCOR (0xc8)
200 #define CyTBPR (0xc3)
201 #define CyTCOR (0xc0)
202 #define CySCHR1 (0x1f)
203 #define CySCHR2 (0x1e)
205 #define CyPILR1 (0xe3)
206 #define CyPILR2 (0xe0)
207 #define CyPILR3 (0xe1)
209 #define CyASYNC (0x02)
210 #define CyLICR (0x26)
211 #define CyLIVR (0x09)
212 #define CySCRL (0x23)
213 #define CySCRH (0x22)
214 #define CyTFTC (0x80)
216 static void cons_write(struct console *co, const char *str, unsigned count)
218 volatile unsigned char *base_addr = (u_char *)CD2401_ADDR;
219 volatile u_char sink;
225 /* Ensure transmitter is enabled! */
228 base_addr[CyCAR] = (u_char)port;
229 while (base_addr[CyCCR])
231 base_addr[CyCCR] = CyENB_XMTR;
233 ier = base_addr[CyIER];
234 base_addr[CyIER] = CyTxMpty;
237 if (pcc2chip[PccSCCTICR] & 0x20)
239 /* We have a Tx int. Acknowledge it */
240 sink = pcc2chip[PccTPIACKR];
241 if ((base_addr[CyLICR] >> 2) == port) {
243 /* Last char of string is now output */
244 base_addr[CyTEOIR] = CyNOTRANS;
248 base_addr[CyTDR] = '\n';
253 else if (*str == '\n') {
254 base_addr[CyTDR] = '\r';
258 base_addr[CyTDR] = *str++;
261 base_addr[CyTEOIR] = 0;
264 base_addr[CyTEOIR] = CyNOTRANS;
268 base_addr[CyIER] = ier;
271 static struct console cons_info =
275 .flags = CON_PRINTBUFFER | CON_BOOT,
279 static void __init mvme16x_early_console(void)
281 register_console(&cons_info);
283 printk(KERN_INFO "MVME16x: early console registered\n");
287 void __init config_mvme16x(void)
289 p_bdid p = &mvme_bdid;
291 uint16_t brdno = be16_to_cpu(p->brdno);
293 mach_max_dma_address = 0xffffffff;
294 mach_sched_init = mvme16x_sched_init;
295 mach_init_IRQ = mvme16x_init_IRQ;
296 arch_gettimeoffset = mvme16x_gettimeoffset;
297 mach_hwclk = mvme16x_hwclk;
298 mach_set_clock_mmss = mvme16x_set_clock_mmss;
299 mach_reset = mvme16x_reset;
300 mach_get_model = mvme16x_get_model;
301 mach_get_hardware_list = mvme16x_get_hardware_list;
303 /* Report board revision */
305 if (strncmp("BDID", p->bdid, 4))
307 printk ("\n\nBug call .BRD_ID returned garbage - giving up\n\n");
311 /* Board type is only set by newer versions of vmelilo/tftplilo */
312 if (vme_brdtype == 0)
315 mvme16x_get_model(id);
316 printk ("\nBRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev>>4,
317 p->rev&0xf, p->yr, p->mth, p->day);
318 if (brdno == 0x0162 || brdno == 0x172)
320 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
322 mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
324 printk ("MVME%x Hardware status:\n", brdno);
325 printk (" CPU Type 68%s040\n",
326 rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
327 printk (" CPU clock %dMHz\n",
328 rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
329 printk (" VMEchip2 %spresent\n",
330 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
331 printk (" SCSI interface %spresent\n",
332 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
333 printk (" Ethernet interface %spresent\n",
334 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
338 mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
340 /* Dont allow any interrupts from the CD2401 until the interrupt */
341 /* handlers are installed */
343 pcc2chip[PccSCCMICR] = 0x10;
344 pcc2chip[PccSCCTICR] = 0x10;
345 pcc2chip[PccSCCRICR] = 0x10;
346 #ifdef CONFIG_EARLY_PRINTK
347 mvme16x_early_console();
352 static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
354 unsigned long *new = (unsigned long *)vectors;
355 unsigned long *old = (unsigned long *)0xffe00000;
356 volatile unsigned char uc, *ucp;
357 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
359 if (brdno == 0x0162 || brdno == 0x172)
361 ucp = (volatile unsigned char *)0xfff42043;
367 *(volatile unsigned long *)0xfff40074 = 0x40000000;
369 *(new+4) = *(old+4); /* Illegal instruction */
370 *(new+9) = *(old+9); /* Trace */
371 *(new+47) = *(old+47); /* Trap #15 */
373 if (brdno == 0x0162 || brdno == 0x172)
374 *(new+0x5e) = *(old+0x5e); /* ABORT switch */
376 *(new+0x6e) = *(old+0x6e); /* ABORT switch */
380 static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
382 *(volatile unsigned char *)0xfff4201b |= 8;
383 return tick_handler(irq, dev_id);
386 void mvme16x_sched_init (irq_handler_t timer_routine)
388 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
391 tick_handler = timer_routine;
392 /* Using PCCchip2 or MC2 chip tick timer 1 */
393 *(volatile unsigned long *)0xfff42008 = 0;
394 *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
395 *(volatile unsigned char *)0xfff42017 |= 3;
396 *(volatile unsigned char *)0xfff4201b = 0x16;
397 if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0,
398 "timer", mvme16x_timer_int))
399 panic ("Couldn't register timer int");
401 if (brdno == 0x0162 || brdno == 0x172)
402 irq = MVME162_IRQ_ABORT;
404 irq = MVME167_IRQ_ABORT;
405 if (request_irq(irq, mvme16x_abort_int, 0,
406 "abort", mvme16x_abort_int))
407 panic ("Couldn't register abort int");
411 /* This is always executed with interrupts disabled. */
412 u32 mvme16x_gettimeoffset(void)
414 return (*(volatile u32 *)0xfff42008) * 1000;
417 int bcd2int (unsigned char b)
419 return ((b>>4)*10 + (b&15));
422 int mvme16x_hwclk(int op, struct rtc_time *t)
426 rtc->ctrl = RTC_READ;
427 t->tm_year = bcd2int (rtc->bcd_year);
428 t->tm_mon = bcd2int (rtc->bcd_mth);
429 t->tm_mday = bcd2int (rtc->bcd_dom);
430 t->tm_hour = bcd2int (rtc->bcd_hr);
431 t->tm_min = bcd2int (rtc->bcd_min);
432 t->tm_sec = bcd2int (rtc->bcd_sec);
438 int mvme16x_set_clock_mmss (unsigned long nowtime)