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);
55 unsigned short mvme16x_config;
56 EXPORT_SYMBOL(mvme16x_config);
59 int __init mvme16x_parse_bootinfo(const struct bi_record *bi)
61 uint16_t tag = be16_to_cpu(bi->tag);
62 if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
68 void mvme16x_reset(void)
70 pr_info("\r\n\nCalled mvme16x_reset\r\n"
71 "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
72 /* The string of returns is to delay the reset until the whole
73 * message is output. Assert reset bit in GCSR */
74 *(volatile char *)0xfff40107 = 0x80;
77 static void mvme16x_get_model(char *model)
79 p_bdid p = &mvme_bdid;
82 suf[1] = p->brdsuffix[0];
83 suf[2] = p->brdsuffix[1];
85 suf[0] = suf[1] ? '-' : '\0';
87 sprintf(model, "Motorola MVME%x%s", be16_to_cpu(p->brdno), suf);
91 static void mvme16x_get_hardware_list(struct seq_file *m)
93 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
95 if (brdno == 0x0162 || brdno == 0x0172)
97 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
99 seq_printf (m, "VMEchip2 %spresent\n",
100 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
101 seq_printf (m, "SCSI interface %spresent\n",
102 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
103 seq_printf (m, "Ethernet i/f %spresent\n",
104 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
109 * This function is called during kernel startup to initialize
110 * the mvme16x IRQ handling routines. Should probably ensure
111 * that the base vectors for the VMEChip2 and PCCChip2 are valid.
114 static void __init mvme16x_init_IRQ (void)
116 m68k_setup_user_interrupt(VEC_USER, 192);
119 #define pcc2chip ((volatile u_char *)0xfff42000)
120 #define PccSCCMICR 0x1d
121 #define PccSCCTICR 0x1e
122 #define PccSCCRICR 0x1f
123 #define PccTPIACKR 0x25
125 #ifdef CONFIG_EARLY_PRINTK
127 /**** cd2401 registers ****/
128 #define CD2401_ADDR (0xfff45000)
130 #define CyGFRCR (0x81)
132 #define CyCLR_CHAN (0x40)
133 #define CyINIT_CHAN (0x20)
134 #define CyCHIP_RESET (0x10)
135 #define CyENB_XMTR (0x08)
136 #define CyDIS_XMTR (0x04)
137 #define CyENB_RCVR (0x02)
138 #define CyDIS_RCVR (0x01)
141 #define CyMdmCh (0x80)
142 #define CyRxExc (0x20)
143 #define CyRxData (0x08)
144 #define CyTxMpty (0x02)
145 #define CyTxRdy (0x01)
146 #define CyLICR (0x26)
147 #define CyRISR (0x89)
148 #define CyTIMEOUT (0x80)
149 #define CySPECHAR (0x70)
150 #define CyOVERRUN (0x08)
151 #define CyPARITY (0x04)
152 #define CyFRAME (0x02)
153 #define CyBREAK (0x01)
154 #define CyREOIR (0x84)
155 #define CyTEOIR (0x85)
156 #define CyMEOIR (0x86)
157 #define CyNOTRANS (0x08)
158 #define CyRFOC (0x30)
161 #define CyMISR (0x8b)
162 #define CyRISR (0x89)
163 #define CyTISR (0x8a)
164 #define CyMSVR1 (0xde)
165 #define CyMSVR2 (0xdf)
171 #define CyRTPRL (0x25)
172 #define CyRTPRH (0x24)
173 #define CyCOR1 (0x10)
174 #define CyPARITY_NONE (0x00)
175 #define CyPARITY_E (0x40)
176 #define CyPARITY_O (0xC0)
177 #define Cy_5_BITS (0x04)
178 #define Cy_6_BITS (0x05)
179 #define Cy_7_BITS (0x06)
180 #define Cy_8_BITS (0x07)
181 #define CyCOR2 (0x17)
183 #define CyCtsAE (0x02)
184 #define CyCOR3 (0x16)
185 #define Cy_1_STOP (0x02)
186 #define Cy_2_STOP (0x04)
187 #define CyCOR4 (0x15)
188 #define CyREC_FIFO (0x0F) /* Receive FIFO threshold */
189 #define CyCOR5 (0x14)
190 #define CyCOR6 (0x18)
191 #define CyCOR7 (0x07)
192 #define CyRBPR (0xcb)
193 #define CyRCOR (0xc8)
194 #define CyTBPR (0xc3)
195 #define CyTCOR (0xc0)
196 #define CySCHR1 (0x1f)
197 #define CySCHR2 (0x1e)
199 #define CyPILR1 (0xe3)
200 #define CyPILR2 (0xe0)
201 #define CyPILR3 (0xe1)
203 #define CyASYNC (0x02)
204 #define CyLICR (0x26)
205 #define CyLIVR (0x09)
206 #define CySCRL (0x23)
207 #define CySCRH (0x22)
208 #define CyTFTC (0x80)
210 void mvme16x_cons_write(struct console *co, const char *str, unsigned count)
212 volatile unsigned char *base_addr = (u_char *)CD2401_ADDR;
213 volatile u_char sink;
219 /* Ensure transmitter is enabled! */
222 base_addr[CyCAR] = (u_char)port;
223 while (base_addr[CyCCR])
225 base_addr[CyCCR] = CyENB_XMTR;
227 ier = base_addr[CyIER];
228 base_addr[CyIER] = CyTxMpty;
231 if (pcc2chip[PccSCCTICR] & 0x20)
233 /* We have a Tx int. Acknowledge it */
234 sink = pcc2chip[PccTPIACKR];
235 if ((base_addr[CyLICR] >> 2) == port) {
237 /* Last char of string is now output */
238 base_addr[CyTEOIR] = CyNOTRANS;
242 base_addr[CyTDR] = '\n';
247 else if (*str == '\n') {
248 base_addr[CyTDR] = '\r';
252 base_addr[CyTDR] = *str++;
255 base_addr[CyTEOIR] = 0;
258 base_addr[CyTEOIR] = CyNOTRANS;
262 base_addr[CyIER] = ier;
267 void __init config_mvme16x(void)
269 p_bdid p = &mvme_bdid;
271 uint16_t brdno = be16_to_cpu(p->brdno);
273 mach_max_dma_address = 0xffffffff;
274 mach_sched_init = mvme16x_sched_init;
275 mach_init_IRQ = mvme16x_init_IRQ;
276 arch_gettimeoffset = mvme16x_gettimeoffset;
277 mach_hwclk = mvme16x_hwclk;
278 mach_set_clock_mmss = mvme16x_set_clock_mmss;
279 mach_reset = mvme16x_reset;
280 mach_get_model = mvme16x_get_model;
281 mach_get_hardware_list = mvme16x_get_hardware_list;
283 /* Report board revision */
285 if (strncmp("BDID", p->bdid, 4))
287 pr_crit("Bug call .BRD_ID returned garbage - giving up\n");
291 /* Board type is only set by newer versions of vmelilo/tftplilo */
292 if (vme_brdtype == 0)
295 mvme16x_get_model(id);
296 pr_info("BRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev >> 4,
297 p->rev & 0xf, p->yr, p->mth, p->day);
298 if (brdno == 0x0162 || brdno == 0x172)
300 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
302 mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
304 pr_info("MVME%x Hardware status:\n", brdno);
305 pr_info(" CPU Type 68%s040\n",
306 rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
307 pr_info(" CPU clock %dMHz\n",
308 rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
309 pr_info(" VMEchip2 %spresent\n",
310 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
311 pr_info(" SCSI interface %spresent\n",
312 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
313 pr_info(" Ethernet interface %spresent\n",
314 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
318 mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
322 static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
324 unsigned long *new = (unsigned long *)vectors;
325 unsigned long *old = (unsigned long *)0xffe00000;
326 volatile unsigned char uc, *ucp;
327 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
329 if (brdno == 0x0162 || brdno == 0x172)
331 ucp = (volatile unsigned char *)0xfff42043;
337 *(volatile unsigned long *)0xfff40074 = 0x40000000;
339 *(new+4) = *(old+4); /* Illegal instruction */
340 *(new+9) = *(old+9); /* Trace */
341 *(new+47) = *(old+47); /* Trap #15 */
343 if (brdno == 0x0162 || brdno == 0x172)
344 *(new+0x5e) = *(old+0x5e); /* ABORT switch */
346 *(new+0x6e) = *(old+0x6e); /* ABORT switch */
350 static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
352 irq_handler_t timer_routine = dev_id;
355 local_irq_save(flags);
356 *(volatile unsigned char *)0xfff4201b |= 8;
357 timer_routine(0, NULL);
358 local_irq_restore(flags);
363 void mvme16x_sched_init (irq_handler_t timer_routine)
365 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
368 /* Using PCCchip2 or MC2 chip tick timer 1 */
369 *(volatile unsigned long *)0xfff42008 = 0;
370 *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
371 *(volatile unsigned char *)0xfff42017 |= 3;
372 *(volatile unsigned char *)0xfff4201b = 0x16;
373 if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0, "timer",
375 panic ("Couldn't register timer int");
377 if (brdno == 0x0162 || brdno == 0x172)
378 irq = MVME162_IRQ_ABORT;
380 irq = MVME167_IRQ_ABORT;
381 if (request_irq(irq, mvme16x_abort_int, 0,
382 "abort", mvme16x_abort_int))
383 panic ("Couldn't register abort int");
387 /* This is always executed with interrupts disabled. */
388 u32 mvme16x_gettimeoffset(void)
390 return (*(volatile u32 *)0xfff42008) * 1000;
393 int bcd2int (unsigned char b)
395 return ((b>>4)*10 + (b&15));
398 int mvme16x_hwclk(int op, struct rtc_time *t)
402 rtc->ctrl = RTC_READ;
403 t->tm_year = bcd2int (rtc->bcd_year);
404 t->tm_mon = bcd2int (rtc->bcd_mth);
405 t->tm_mday = bcd2int (rtc->bcd_dom);
406 t->tm_hour = bcd2int (rtc->bcd_hr);
407 t->tm_min = bcd2int (rtc->bcd_min);
408 t->tm_sec = bcd2int (rtc->bcd_sec);
414 int mvme16x_set_clock_mmss (unsigned long nowtime)