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 void mvme16x_reset (void);
51 int bcd2int (unsigned char b);
54 unsigned short mvme16x_config;
55 EXPORT_SYMBOL(mvme16x_config);
58 int __init mvme16x_parse_bootinfo(const struct bi_record *bi)
60 uint16_t tag = be16_to_cpu(bi->tag);
61 if (tag == BI_VME_TYPE || tag == BI_VME_BRDINFO)
67 void mvme16x_reset(void)
69 pr_info("\r\n\nCalled mvme16x_reset\r\n"
70 "\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r\r");
71 /* The string of returns is to delay the reset until the whole
72 * message is output. Assert reset bit in GCSR */
73 *(volatile char *)0xfff40107 = 0x80;
76 static void mvme16x_get_model(char *model)
78 p_bdid p = &mvme_bdid;
81 suf[1] = p->brdsuffix[0];
82 suf[2] = p->brdsuffix[1];
84 suf[0] = suf[1] ? '-' : '\0';
86 sprintf(model, "Motorola MVME%x%s", be16_to_cpu(p->brdno), suf);
90 static void mvme16x_get_hardware_list(struct seq_file *m)
92 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
94 if (brdno == 0x0162 || brdno == 0x0172)
96 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
98 seq_printf (m, "VMEchip2 %spresent\n",
99 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
100 seq_printf (m, "SCSI interface %spresent\n",
101 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
102 seq_printf (m, "Ethernet i/f %spresent\n",
103 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
108 * This function is called during kernel startup to initialize
109 * the mvme16x IRQ handling routines. Should probably ensure
110 * that the base vectors for the VMEChip2 and PCCChip2 are valid.
113 static void __init mvme16x_init_IRQ (void)
115 m68k_setup_user_interrupt(VEC_USER, 192);
118 #define pcc2chip ((volatile u_char *)0xfff42000)
119 #define PccSCCMICR 0x1d
120 #define PccSCCTICR 0x1e
121 #define PccSCCRICR 0x1f
122 #define PccTPIACKR 0x25
124 #ifdef CONFIG_EARLY_PRINTK
126 /**** cd2401 registers ****/
127 #define CD2401_ADDR (0xfff45000)
129 #define CyGFRCR (0x81)
131 #define CyCLR_CHAN (0x40)
132 #define CyINIT_CHAN (0x20)
133 #define CyCHIP_RESET (0x10)
134 #define CyENB_XMTR (0x08)
135 #define CyDIS_XMTR (0x04)
136 #define CyENB_RCVR (0x02)
137 #define CyDIS_RCVR (0x01)
140 #define CyMdmCh (0x80)
141 #define CyRxExc (0x20)
142 #define CyRxData (0x08)
143 #define CyTxMpty (0x02)
144 #define CyTxRdy (0x01)
145 #define CyLICR (0x26)
146 #define CyRISR (0x89)
147 #define CyTIMEOUT (0x80)
148 #define CySPECHAR (0x70)
149 #define CyOVERRUN (0x08)
150 #define CyPARITY (0x04)
151 #define CyFRAME (0x02)
152 #define CyBREAK (0x01)
153 #define CyREOIR (0x84)
154 #define CyTEOIR (0x85)
155 #define CyMEOIR (0x86)
156 #define CyNOTRANS (0x08)
157 #define CyRFOC (0x30)
160 #define CyMISR (0x8b)
161 #define CyRISR (0x89)
162 #define CyTISR (0x8a)
163 #define CyMSVR1 (0xde)
164 #define CyMSVR2 (0xdf)
170 #define CyRTPRL (0x25)
171 #define CyRTPRH (0x24)
172 #define CyCOR1 (0x10)
173 #define CyPARITY_NONE (0x00)
174 #define CyPARITY_E (0x40)
175 #define CyPARITY_O (0xC0)
176 #define Cy_5_BITS (0x04)
177 #define Cy_6_BITS (0x05)
178 #define Cy_7_BITS (0x06)
179 #define Cy_8_BITS (0x07)
180 #define CyCOR2 (0x17)
182 #define CyCtsAE (0x02)
183 #define CyCOR3 (0x16)
184 #define Cy_1_STOP (0x02)
185 #define Cy_2_STOP (0x04)
186 #define CyCOR4 (0x15)
187 #define CyREC_FIFO (0x0F) /* Receive FIFO threshold */
188 #define CyCOR5 (0x14)
189 #define CyCOR6 (0x18)
190 #define CyCOR7 (0x07)
191 #define CyRBPR (0xcb)
192 #define CyRCOR (0xc8)
193 #define CyTBPR (0xc3)
194 #define CyTCOR (0xc0)
195 #define CySCHR1 (0x1f)
196 #define CySCHR2 (0x1e)
198 #define CyPILR1 (0xe3)
199 #define CyPILR2 (0xe0)
200 #define CyPILR3 (0xe1)
202 #define CyASYNC (0x02)
203 #define CyLICR (0x26)
204 #define CyLIVR (0x09)
205 #define CySCRL (0x23)
206 #define CySCRH (0x22)
207 #define CyTFTC (0x80)
209 void mvme16x_cons_write(struct console *co, const char *str, unsigned count)
211 volatile unsigned char *base_addr = (u_char *)CD2401_ADDR;
212 volatile u_char sink;
218 /* Ensure transmitter is enabled! */
221 base_addr[CyCAR] = (u_char)port;
222 while (base_addr[CyCCR])
224 base_addr[CyCCR] = CyENB_XMTR;
226 ier = base_addr[CyIER];
227 base_addr[CyIER] = CyTxMpty;
230 if (pcc2chip[PccSCCTICR] & 0x20)
232 /* We have a Tx int. Acknowledge it */
233 sink = pcc2chip[PccTPIACKR];
234 if ((base_addr[CyLICR] >> 2) == port) {
236 /* Last char of string is now output */
237 base_addr[CyTEOIR] = CyNOTRANS;
241 base_addr[CyTDR] = '\n';
246 else if (*str == '\n') {
247 base_addr[CyTDR] = '\r';
251 base_addr[CyTDR] = *str++;
254 base_addr[CyTEOIR] = 0;
257 base_addr[CyTEOIR] = CyNOTRANS;
261 base_addr[CyIER] = ier;
266 void __init config_mvme16x(void)
268 p_bdid p = &mvme_bdid;
270 uint16_t brdno = be16_to_cpu(p->brdno);
272 mach_max_dma_address = 0xffffffff;
273 mach_sched_init = mvme16x_sched_init;
274 mach_init_IRQ = mvme16x_init_IRQ;
275 arch_gettimeoffset = mvme16x_gettimeoffset;
276 mach_hwclk = mvme16x_hwclk;
277 mach_reset = mvme16x_reset;
278 mach_get_model = mvme16x_get_model;
279 mach_get_hardware_list = mvme16x_get_hardware_list;
281 /* Report board revision */
283 if (strncmp("BDID", p->bdid, 4))
285 pr_crit("Bug call .BRD_ID returned garbage - giving up\n");
289 /* Board type is only set by newer versions of vmelilo/tftplilo */
290 if (vme_brdtype == 0)
293 mvme16x_get_model(id);
294 pr_info("BRD_ID: %s BUG %x.%x %02x/%02x/%02x\n", id, p->rev >> 4,
295 p->rev & 0xf, p->yr, p->mth, p->day);
296 if (brdno == 0x0162 || brdno == 0x172)
298 unsigned char rev = *(unsigned char *)MVME162_VERSION_REG;
300 mvme16x_config = rev | MVME16x_CONFIG_GOT_SCCA;
302 pr_info("MVME%x Hardware status:\n", brdno);
303 pr_info(" CPU Type 68%s040\n",
304 rev & MVME16x_CONFIG_GOT_FPU ? "" : "LC");
305 pr_info(" CPU clock %dMHz\n",
306 rev & MVME16x_CONFIG_SPEED_32 ? 32 : 25);
307 pr_info(" VMEchip2 %spresent\n",
308 rev & MVME16x_CONFIG_NO_VMECHIP2 ? "NOT " : "");
309 pr_info(" SCSI interface %spresent\n",
310 rev & MVME16x_CONFIG_NO_SCSICHIP ? "NOT " : "");
311 pr_info(" Ethernet interface %spresent\n",
312 rev & MVME16x_CONFIG_NO_ETHERNET ? "NOT " : "");
316 mvme16x_config = MVME16x_CONFIG_GOT_LP | MVME16x_CONFIG_GOT_CD2401;
320 static irqreturn_t mvme16x_abort_int (int irq, void *dev_id)
322 unsigned long *new = (unsigned long *)vectors;
323 unsigned long *old = (unsigned long *)0xffe00000;
324 volatile unsigned char uc, *ucp;
325 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
327 if (brdno == 0x0162 || brdno == 0x172)
329 ucp = (volatile unsigned char *)0xfff42043;
335 *(volatile unsigned long *)0xfff40074 = 0x40000000;
337 *(new+4) = *(old+4); /* Illegal instruction */
338 *(new+9) = *(old+9); /* Trace */
339 *(new+47) = *(old+47); /* Trap #15 */
341 if (brdno == 0x0162 || brdno == 0x172)
342 *(new+0x5e) = *(old+0x5e); /* ABORT switch */
344 *(new+0x6e) = *(old+0x6e); /* ABORT switch */
348 static irqreturn_t mvme16x_timer_int (int irq, void *dev_id)
350 irq_handler_t timer_routine = dev_id;
353 local_irq_save(flags);
354 *(volatile unsigned char *)0xfff4201b |= 8;
355 timer_routine(0, NULL);
356 local_irq_restore(flags);
361 void mvme16x_sched_init (irq_handler_t timer_routine)
363 uint16_t brdno = be16_to_cpu(mvme_bdid.brdno);
366 /* Using PCCchip2 or MC2 chip tick timer 1 */
367 *(volatile unsigned long *)0xfff42008 = 0;
368 *(volatile unsigned long *)0xfff42004 = 10000; /* 10ms */
369 *(volatile unsigned char *)0xfff42017 |= 3;
370 *(volatile unsigned char *)0xfff4201b = 0x16;
371 if (request_irq(MVME16x_IRQ_TIMER, mvme16x_timer_int, 0, "timer",
373 panic ("Couldn't register timer int");
375 if (brdno == 0x0162 || brdno == 0x172)
376 irq = MVME162_IRQ_ABORT;
378 irq = MVME167_IRQ_ABORT;
379 if (request_irq(irq, mvme16x_abort_int, 0,
380 "abort", mvme16x_abort_int))
381 panic ("Couldn't register abort int");
385 /* This is always executed with interrupts disabled. */
386 u32 mvme16x_gettimeoffset(void)
388 return (*(volatile u32 *)0xfff42008) * 1000;
391 int bcd2int (unsigned char b)
393 return ((b>>4)*10 + (b&15));
396 int mvme16x_hwclk(int op, struct rtc_time *t)
400 rtc->ctrl = RTC_READ;
401 t->tm_year = bcd2int (rtc->bcd_year);
402 t->tm_mon = bcd2int(rtc->bcd_mth) - 1;
403 t->tm_mday = bcd2int (rtc->bcd_dom);
404 t->tm_hour = bcd2int (rtc->bcd_hr);
405 t->tm_min = bcd2int (rtc->bcd_min);
406 t->tm_sec = bcd2int (rtc->bcd_sec);